Honeywell T7350 Thermostat User Manual

T7350 Commercial Programmable Thermostat

FOR SINGLE- OR MULTI-STAGE CONVENTIONAL/HEAT PUMP SYSTEMS

PRODUCT DATA

FEATURES

•

Typically used in buildings (including: restaurants,

shopping malls, office buildings and banks) under

55,000 square feet.

•

For single zone rooftop units, split systems, heat

pumps or hot/chilled water systems.

•

7-day programming.

Two Occupied and two Not Occupied periods per day.

Advanced configuration using TStatSpec software or

PDA.

•

Individual heat and cool setpoints available for

Occupied and Not Occupied periods.

•

P+I+D control minimizes temperature fluctuations.

Recovery ramp control automatically optimizes

equipment start times based on building load.

•

Convenient overrides allow temporary setpoint

changes.

APPLICATION

•

Keypad multi-level lockout available with all models.

The T7350 Commercial Programmable Thermostat controls

Remote sensor capability for temperature (including

outdoor air and discharge air) and humidity sensors.

4 Vac commercial single zone heating, ventilating and air

conditioning (HVAC) equipment. The T7350 consists of a

thermostat and subbase. The thermostat includes the keypad

and display for 7-day programming. The subbase includes

equipment control connections. The subbase mounts on the

wall and the thermostat mounts to the subbase.

•

Auxiliary subbase contact typically interface with a

Honeywell Economizer System (for total rooftop

control integration) or act as dehumidification output.

•

Universal Versaguard™ Thermostat guards available.

T7350H provides networking capability on LonWorks^®

Bus using a Free Topology Transceiver (FTT).

•

T7350H Conforms to LonMark Space Comfort Profile

for rooftop applications.

continued

Contents

Specifications ...................................................................

Installation ........................................................................

Settings ............................................................................ 11

Installer Setup .................................................................. 12

Programming .................................................................... 16

Operation .......................................................................... 19

Troubleshooting Guide (Table 19) .................................... 25

Wiring Diagrams (Fig. 17-25) ........................................... 27

Appendix - PDA Usage .................................................... 32

Put UPC Code Here

3-2605-06

T7350 Commercial Programmable Thermostat

FEATURES (continued from page 1)

Features Available via TStatSpec or

PDA Configuration

Features via Optional Network

Model-H

•

365 day clock with holiday programming.

Automatic Daylight Saving Time adjustments.

Selectable dehumidification limit control.

Modulating output configuration.

•

Communications on LonTalk network.

•

Network Tools (LonSpec, CARE) have ability to

configure all PDA available features.

•

T7350 Network data inputs including outdoor air

temperature, Occupancy Sensor, Electric Demand

Shed/Restore, room temperature and humidity.

Occupancy input to control standby setpoint.

Additional standby period used in low traffic areas.

Sequential start option.

•

Use T7350H to time-schedule up to 119 network

connected XL10 + XL15c devices.

Time synchronization with a network master clock or

the T7350H configured as the network master clock.

Discharge air high/low limits.

Selectable recovery ramp.

Remote manual occupancy changes to the T7350 via

Command Display (S7760).

Ambient lockout (with outdoor sensor).

System monitoring.

View and modify weekly schedules and holidays via

Command Display (S7760).

Application database with download and storing.

Remote changes to the T7350 occupancy override,

schedules, fan operation (on auto), system mode (off,

auto, heat, cool) and room temperature setpoints via

Workstation.

•

Remote unoccupied bypass controlled from another

device.

Remote T7350 data and alarm monitoring via

Command Display or Workstation.

Network Manual Mode allows a remote user to turn on/

off or modulate each output via a network connection.

LonMark plugin software to facilitate third party

configuration tools and workstations.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the

TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or

phone:

Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

Honeywell Customer Care

885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9.

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,

Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

63-2605—06

T7350 Commercial Programmable Thermostat

SPECIFICATIONS

IMPORTANT

Models: See Table 1.

The specifications given in this publication do not

include normal manufacturing tolerances. Therefore,

this unit might not exactly match listed specifications.

This product is tested and calibrated under closely

controlled conditions; minor performance differences

can be expected if those conditions are changed.

Dimensions: See Fig. 1.

Finish (color): Trident White.

Batteries: No batteries required.

Table 1. T7350 Thermostat Features.

Maximum Stages^a

Heat Cool

Auxiliary LONWORKS®

Relay Capability?

Model

T7350A

Applications

Features

Conventional

₁b

₂b

₃₍₄₎c

Yes No

T7350B

Heat Pump₂b

Outdoor, Discharge Air Capability

Yes

T7350D

T7350H1009

T7350H1017 Modulating

₍₂₎c

Humidity, Occupancy,

Outdoor, Discharge Air Capability

Isolated Yes

Normally

Yes

Humidity, Occupancy,

modulating, 2 relay

Open

Outdoor, Discharge Air Capability,

T7350M

4-20 mA output (2-10 Vdc with 500 ohm resistor) Yes

All models are down-selectable and can be configured to control fewer stages than the maximum allowed.

One extra stage (of either heat or cool) can be configured using the auxiliary relay.

Heat pump applications for these models have a maximum of two heat stages and two cool stages.

Mounting Means:

Humidity Ratings: 5% to 90% RH, noncondensing.

Mounts on subbase.

Subbase Mounts On:

Emergency Heat Indication:

Display indicates when Emergency Heat is activated (Em).

Wall: Using two 5/8 in. long #6-32 screws (included).

Outlet Box: Using sheet metal screws.

Temperature:

Throttling Range for Modulating Outputs:

Automatically adjusts based on heat/cool stages. Manually

adjustable with TStatSpec software or PDA.

Ratings:

Operating Ambient: 30°F to 110°F (-1°C to 43°C).

Shipping: -30°F to +150°F (-34°C to +66°C).

Display Accuracy: ±1°F (±1°C).

Setpoint:

Clock Accuracy (at 77° F [25° C]): ±1 min./month (30 days).

Range:

Minimum Stage Operation Time (fixed):

Minimum On

Heating: 40°F to 90°F (4°C to 32°C).

Cooling: 45°F to 99°F (7°C to 37°C).

Deadband: 2°F (1°C).

Heat: 1 minutes.

Cool: 3 minutes.

Default Settings: See Table 2.

Minimum Off (Cool and Heat Pump): 1 minute.

Loss of Power: The thermostat maintains programmed times

and temperatures for the life of the product. Clock and day

information is retained for a minimum of 48 hours.

Electrical Ratings:

Power: 24 Vac, 50/60 Hz.; 20 to 30 Vac, 50/60 Hz.

Input:

NOTE: To achieve the 48-hour power-loss clock retention,

the T7350 must be powered for at least 5 minutes.

Temperature: 20K ohms.

Humidity: 0-10 Vdc.

Outdoor: 3000 PTC.

Communicating Model T7350H:

Discharge Air: 20K ohms.

Connection Terminals for the LonWorks Bus.

Network jack for quick access by personal computer based

tools.

Occupancy Sensor: Dry contact switching 30 Vdc at 1 mA.

All Relay Outputs (at 30 Vac):

Running: 1.5A maximum.

Communications service-pin pushbutton to simplify startup.

LonMark Functional Profile: 8500_20 Space Comfort

Controller.

Inrush: 7.5A maximum.

Modulating Output: 4 to 20 mA with 510 ohm maximum

terminating resistance.

LonMark SCC Object Type: 8504 Rooftop See Fig. 2.

LonMark Program Identifier: 80:00:0C:55:04:03:04:2E.

LonMark Application Interoperability: version 3.3

Honeywell LonMark Plug-In file downloads:

http://plugin.ge51.honeywell.de/index.htm#

System Current Draw (without load):

VA maximum at 30 Vac, 50/60 Hz.

NOTE: Relays are N.O. Single-Pole, Single-Throw (SPST).

Outdoor Sensor Wiring: Requires 18 gauge wire.

63-2605—06

T7350 Commercial Programmable Thermostat

TStat Spec System Requirements:

Windows XP or Windows 7

Accessories:

Duct Discharge Air Sensors:

C7041B (6 or 12 in. [152 or 305 mm]),

C7041C (18 in. [457 mm]),

PDA System Requirements:

Palm OS : 3.5.x to 5.2.1

C7041J (12 ft. [3.66 m] averaging),

C7770A (8 in. [203 mm] probe).

Outdoor Air Sensors: C7089A, C7170A,

C7031G2014 (weatherproof).

Dynamic Heap: 256K bytes.

Free RAM Space: 1000K bytes.

Serial Communications: RS-232.

Temperature Sensors (Remote): C7772A, TR21, TR22, TR23,

TR24, T7771.

Approvals:

European Community Mark (CE) Listed.

UL 873 Recognized, NEC Class 2.

FCC Part 15 subpart J Class A.

cUL.

Economizer Logic Modules: W6210, W6215, W7210, W7212,

W7215, W7459.

Humidity Sensors: H7625, H7635.

PDA Units: Palm V, M125, and i705 handhelds;

TRGPro handheld; ZIRE™ 71 handheld;

TUNGSTEN™ T handheld.

Others:

Table 2. Default Setpoints.

Not

09541B FTT network termination module.

09651A Vertical Mounting Hardware Wallplate Adapter

(Trident white).

Control

Heating

Cooling

Occupied

Standby

70° F (21° C) 55° F (13° C) 67° F (19° C)

75° F (24° C) 85° F (29° C) 78° F (26° C)

0000083-001 Thermostat Interface Module (TIM).

0014064-001 Infra-Red TIM.

0000452-001 Troubleshooting Cable.

AK3797 Single pair network cable plenum rated,

U.L. Type CMP.

-3/16 (56)

-9/16

40)

-3/4 (171)

(

AK3798 Single pair network cable, U.L. Type CMR.

AK3799 Double pair network cable plenum rated,

U.L. Type CMP.

Q7740A FTT network 2-way repeater.

Q7740B FTT network 4-way repeater.

TG512 Universal Versaguard™ Thermostat guards.

-1/2

114)

(

SUBBASE

(

-1/32

52)

(

-1/16

104)

(

-1/32

52)

(

-5/8

42)

2-3/8 (60)

-1/4 (83)

-9/16 (166)

1-5/8

(42)

M22432

Fig. 1. Thermostat and subbase dimensions in inches (mm).

63-2605—06

T7350 Commercial Programmable Thermostat

Hardware Output

Node

Object

Hardware Output

SCC-Rooftop

Object Number 8504.

nviRequest

SNVT_obj_request

nvoStatus

SNVT_ obj_status

nviSpaceTemp

SNVT_temp_p

nvoSpaceTemp

SNVT_ temp_p

nv1

Mandatory

Network

Variables

nv2

nv6

nv1

Mandatory nv26

Network

nvoUnitStatus

SNVT_hvac_status

Variables

nv27

nviTimeSet

SNVT_ time_stamp

nvoFileStat

SNVT_file_status

nv3

nv5

nv7

nviSetpoint

SNVT_ temp_p

nvoEffectSetpt

SNVT_temp_p

nv2

nv5

nv28

nv29

nv30

nv34

nv37

nv43

nv45

Optional

Network

Variables

nviFileReq

SNVT_file_req

nviOccSchedule

SNVT_tod_event

nvoEffectOccup

SNVT_occupancy

nviFilePos

SNVT_file_pos

Optional

Network

Variables

nviOccManCmd

SNVT_occupancy

nvoHeatCool

SNVT_hvac_mode

nv6

nviOccSensor

SNVT_occupancy

nvoDischAirTemp

SNVT_temp_p

Configuration Properties

UCPTdevName

UCPTapplVer

nv7

nc1 - nciDeviceName

nc2 - nciApplVer

(manf specific)

nroT7350Ver

nv11

UNVT_version

nviApplicMode

SNVT_hvacMode

nvoTerminalLoad

SNVT_lev_percent

nv8

nviOutdoorTemp

SNVT_Temp_p

nvoSpaceRH

SNVT_lev_percent

nv19

nv20

nviInUse

UNVT_inUse

nv9

nviSpaceRH

SNVT_lev_percent

nvoOutdoorTemp

SNVT_temp_p

nviPgm

UNVT_pgmIn

nroPgmVer

nv12

UNVT_pgmId

nv10

Manufacturer nv13ⁿ^v^o^P^g^m

Configuration Properties

UNVT_pgmOut

nc1 - nciSndHrtBt

SNVT_time_sec

SNVT_temp_setpt

SNVT_time_min

UCPTconfig

(mandatory)

(optional)

(mandatory)

(optional)

Defined

Section

nc4 - nciRevHrtBt

nc2 - nciSetpoints

nc6 - nciBypassTime

nciConfig

nvoTime

SNVT_time_stamp

nv14

nv15

nv16

nv17

nv18

(manf specific)

nvoAlarmH

UNVT_alarm

nciConfigPts

nciDayLghtSav

UCPTconfigPts

UCPTdaylightSav

nvoAlarmStatus

UNVT_alarmStatus

nciDaySchedule0 UCPTschedule0

nciDaySchedule1 UCPTschedule1

nciDaySchedule2 UCPTschedule2

nciDaySchedule3 UCPTschedule3

nciDaySchedule4 UCPTschedule4

nciDaySchedule5 UCPTschedule5

nciDaySchedule6 UCPTschedule6

nciDaySchedule7 UCPTschedule7

nvoAlarmLog

UNVT_alarmLog

nvoError

UNVT_error

nciHolSched

UCPTholSched

Hardware Input

nviBypass

SNVT_switch

nvoBypass

nv43

SNVT_switch

nv30

nv31

nv32

nv34

nviFanAuto

SNVT_switch

nvoOccSchedule

SNVT_tod_event

nv44

nv45

nv46

nv47

Manufacturer

Defined

Section

nviManValue

UNVT_manValue

nvoOccSensor

SNVT_occupancy

nviDlcShed

UNVT_dlcShed

nvoData1

UNVT_data1

nvoData2

UNVT_data2

Hardware Input

M22431

Fig. 2. T7350H LonMark Space Comfort Controller Rooftop Object (8504) with Node Object.

63-2605—06

T7350 Commercial Programmable Thermostat

INSTALLATION

NOTE: Allow sufficient clearance below the thermostat to

plug in the TIM cable.

When Installing this Product...

Read these instructions carefully. Failure to follow them

could damage the product or cause a hazardous

condition.

Install the remote-mounted sensor(s) about 5 ft (1.5m) above

the floor in an area with good air circulation at average

temperature. (See Fig. 3.)

Check ratings given in instructions and on the product to

ensure the product is suitable for your application.

Installer must be a trained, experienced service

technician.

If multiple remote sensors are required, they must be arranged

in a temperature averaging network consisting of four or nine

sensors. (See Fig. 4 and 6.)

After installation is complete, check out product

operation as provided in these instructions.

NOTE: Only TR20 models with neither setpoint adjustment

nor bypass can be used for temperature averaging.

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment

circuitry.

Disconnect power supply before installation.

YES

IMPORTANT

5 FEET

1.5 METERS)

All wiring must agree with applicable codes,

(

ordinances and regulations.

MERCURY NOTICE

If this control is replacing a control that contains

mercury in a sealed tube, do not place your old

control in the trash. Dispose of properly.

M4823A

Fig. 3. Typical location of thermostat

or remote-mounted sensor.

Contact your local waste management authority for

instructions regarding recycling and the proper disposal

of an old control. If you have questions, call Honeywell

Customer Care Center at 1-800-468-1502.

IMPORTANT

To avoid electrical interference, which can cause

erratic performances, keep wiring runs as short as

possible and do not run thermostat wires adjacent to

the line voltage electrical distribution systems. Use

shielded cable (Belden type 8762 or equivalent for

Location

Do not install the thermostat where it can be affected by:

-wire). The cable shield must be grounded only at

—

drafts, or dead spots behind doors and in corners.

hot or cold air from ducts.

the controlled equipment case.

radiant heat from sun or appliances.

concealed pipes and chimneys.

Mounting Subbase

unheated (uncooled) areas such as an outside wall behind

the thermostat.

The subbase mounts horizontally or vertically.

IMPORTANT

Subbase

•

When using the internal temperature sensor, the

device must be mounted horizontally (with the LCD

facing upwards). Precise leveling is not needed.

When using remote sensors, thermostat mounting ori-

entation does not matter.

WHEN USED TO SENSE ROOM TEMPERATURE

Install the thermostat about 5 ft (1.5m) above the floor in an

area with good air circulation at average temperature. (See

Fig. 3.)

•

Wall mounting (using standard drywall screws) is standard.

Mounting to a 2 in.(50.8 mm) by 4 in. (101.6 mm) wiring box

can be accomplished:

WHEN NOT USED TO SENSE ROOM TEMPERATURE

When using the remote-mounted temperature (and humidity)

sensor(s) to sense ambient conditions, install the thermostat in

an area that is accessible for setting and adjusting the

temperature and settings.

—

for a horizontal box, no extra hardware is required.

for a vertical box, part 209651A is required.

Mount to European standard wall box (having 60.3 mm

[

2.4 in.] between mounting screws in a horizontal line) with

or without adaptive hardware.

CAUTION

Position and level the subbase.

Equipment Damage Hazard.

Can damage the TIM connection beyond repair.

Disconnect the TIM cable prior to opening or closing

the thermostat cover.

NOTE: A level wallplate is only for appearance. The

thermostat functions properly when not level.

63-2605—06

T7350 Commercial Programmable Thermostat

Use a pencil to mark the mounting holes. (See Fig. 7.)

Remove the subbase from the wall and drill two 3/16 in.

SUBBASE

(

4.76 mm) holes in the wall (if drywall) as marked. For

firmer material such as plaster or wood, drill two 7/32 in.

(

5.56 mm) holes.

TR21

Gently tap anchors (provided) into the drilled holes until

flush with the wall.

Position the subbase over the holes, pulling wires

through the wiring opening.

Loosely insert the mounting screws into the holes.

Tighten mounting screws.

TR21

SUBBASE

TR21

M29257

Fig. 6. Nine TR21 Sensors providing a temperature

averaging network for T7350 Thermostat.

M29184

Fig. 4. Four TR21 Sensors providing a temperature

averaging network for T7350 Thermostat.

WIRES THROUGH WALL

T7350 SUBBASE

MOUNTING

HOLES

WALL

ANCHORS

(2)

TR21-A

THE TR21-A IS A 10K OHM SENSOR.

M29256

MOUNTING

SCREWS

Fig. 5. Two TR-21A Sensors providing a temperature

averaging network for T7350 Thermostat.

M19608

Fig. 7. Mounting the subbase.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 4. T7350B Subbase for Two-stage Heat,

Two-stage Cool Systems.

Wiring

Terminal

CAUTION

Electrical Shock or Equipment Damage Hazard.

Can shock individuals or short equipment

circuitry.

Disconnect power supply before installation.

Description

RC^aRC

a 24 VAC Cooling transformer.

IMPORTANT

All wiring must comply with local electrical codes

_R_Ha RHa 24 VAC Heating transformer.

and ordinances.

X Common.

NOTE: Maximum (and recommended) wire size is

aux aux Conventional: Auxiliary relay or 3rd stage of

8-gauge (ø 1.02 mm). Do not use wire smaller than

2-gauge (ø 0.644 mm).

heating or cooling.

Heat Pump: Auxiliary relay or 2nd stage auxiliary.

Follow equipment manufacturer wiring instructions when

available. Refer to the Wiring Diagram section for typical

hookups. A letter code is located near each terminal for

identification. Refer to Tables 3 through 8 for terminal

designations.

W1 O/B Conventional: Stage 1 heating relay.

Heat Pump: Changeover relay for heating (B) or

cooling (O) .

W2 W1 Conventional: Stage 2 heating relay.

Heat Pump: 1st Stage auxiliary heat relay.

Loosen subbase terminal screws and connect system

wires.

Y1 Y1 Conventional: Stage 1 cooling relay.

Heat Pump: Stage 1 compressor relay.

Securely tighten each terminal screw.

Push excess wire back into the hole in the wall.

Plug the hole with nonflammable insulation to prevent

drafts from affecting the thermostat.

Y2 Y2 Conventional: Stage 2 cooling relay.

Heat Pump: Stage 2 compressor relay.

AS AS Discharge Air Sensor connection (1).

AS AS Discharge Air Sensor connection (2).

OS OS Outdoor Air Sensor connection (1).

OS OS Outdoor Air Sensor connection (2).

Table 3. T7350A Subbase for Single-stage Heat,

Single-stage Cool Systems.

Terminal

Fan relay.

T3 T3 TR20 Series remote sensor connection (GND).

T4 T4 TR20 Series remote sensor connection (Sensor).

T5 T5 TR20 Series remote sensor connection (Set Pt).

T6 T6 TR20 Series remote sensor connection (Bypass).

T7 T7 TR20 Series remote sensor connection (LED).

Description

_R_Ca RC

_R_Ha RH

a 24 VAC Cooling transformer.

a 24 VAC Heating transformer.

Factory jumper between RC and RH for systems with one

transformer.

Common.

Fan relay.

For changeover functional details, see Operation section.

aux aux Conventional: Auxiliary relay or 2nd Stage of

heating or cooling relay.

Heat Pump: Auxiliary relay or 1st Stage auxiliary

heat relay.

W1 O/B Conventional: Stage 1 heating relay.

Heat Pump: Changeover relay for heating (B) or

cooling (O) .

Y1 Y1 Conventional: Stage 1 cooling relay.

Heat Pump: Stage 1 compressor relay.

Factory jumper between RC and RH for systems with one

transformer.

For changeover functional details, see Operation section.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 5. T7350D Subbase for Three-stage Heat,

Three-stage Cool Systems.

Table 6. T7350H Subbase for Three-stage Heat, Three-

stage Cool Systems with Network Communications

Terminal

Description

_R_Ca RC

a 24 VAC Cooling transformer.

_R_Ca _R_Ca

_R_Ha _R_Ha

24 VAC Cooling transformer.

24 VAC Heating transformer.

_R_Ha RHa 24 VAC Heating transformer.

Common.

aux aux Auxiliary relay.

W1 O/B Conventional: Stage 1 heating relay.

_a_u_xb aux

_a_u_xb _a_u_xb

b Auxiliary relay connection (normally open).

Auxiliary relay connection (common).

Heat Pump: Changeover relay for heating (B) or

cooling (O) .

W1 O/B Conventional: Stage 1 heating relay.

Heat Pump: Changeover relay for heating (B) or

cooling (O) .

W2 W1 Conventional: Stage 2 heating relay.

Heat Pump: 1st Stage auxiliary heat relay.

W2 W1 Conventional: Stage 2 heating relay.

Y1 Y1 Conventional: Stage 1 cooling relay.

Heat Pump: Stage 1 compressor relay.

Y2 Y2 Conventional: Stage 2 cooling relay.

Heat Pump: 1st Stage auxiliary heat relay.

Y1 Y1 Conventional: Stage 1 cooling relay.

Heat Pump: Stage 1 compressor relay.

Y2 Y2 Conventional: Stage 2 cooling relay.

Heat Pump: Stage 2 compressor relay.

AS AS Discharge Air Sensor connection (1).

AS AS Discharge Air Sensor connection (2).

OS OS Outdoor Air Sensor connection (1).

OS OS Outdoor Air Sensor connection (2).

Heat Pump: Stage 2 compressor relay.

AS AS Discharge Air Sensor connection (1).

AS AS Discharge Air Sensor connection (2).

OS OS Outdoor Air Sensor connection (1).

OS OS Outdoor Air Sensor connection (2).

Fan relay.

T3 T3 TR20 Series remote sensor connection (GND).

T4 T4 TR20 Series remote sensor connection (Sensor).

T5 T5 TR20 Series remote sensor connection (Set Pt).

T6 T6 TR20 Series remote sensor connection (Bypass).

T7 T7 TR20 Series remote sensor connection (LED).

Fan relay.

TR20 Series remote sensor connection (GND).

TR20 Series remote sensor connection (Sensor).

TR20 Series remote sensor connection (Set Pt).

TR20 Series remote sensor connection (Bypass).

TR20 Series remote sensor connection (LED).

W3 W2 Conventional: Stage 3 heat or stage 4 cool relay.

Heat Pump: 2nd Stage auxiliary heat relay.

Conventional: Stage 3 cooling relay.

W3 W2 Conventional: Stage 3 heat or stage 4 cool relay.

—

Heat Pump: 2nd Stage auxiliary heat relay.

Conventional: Stage 3 cooling relay.

HS HS Humidity Sensor connection (signal: 0-10 Vdc).

HC HC Humidity Sensor connection (common).

HP HP Humidity Sensor connection (power).

—

HS HS Humidity Sensor connection (signal: 0-10 Vdc).

HC HC Humidity Sensor connection (common).

HP HP Humidity Sensor connection (power).

Motion Sensor connection (1).

Motion Sensor connection (2).

Motion Sensor connection (1).

Motion Sensor connection (2).

Factory jumper between RC and RH for systems with one

transformer.

For changeover functional details, see Operation section.

ebus ebus LonWorks Bus (1).

ebus ebus LonWorks Bus (2).

Factory jumper between RC and RH for systems with one

transformer.

Floating auxiliary contact (not connected to transformer hot or

common).

For changeover functional details, see Operation section.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 7. T7350H Subbase for Modulating Systems with

Network Communications.

Table 8. T7350M Subbase for Modulating Systems.

Terminal

Description

_R_Ca

_R_Ha

—

24 VAC Cooling transformer.

_R_Ca

_R_Ha

—

24 VAC Cooling transformer.

24 VAC Heating transformer.

—

Common.

aux

Auxiliary relay or 2nd stage of heating or cooling.

Stage 1 heating relay.

Stage 1 cooling relay.

_a_u_xb aux

aux^baux

b Auxiliary relay connection (normally open).

b Auxiliary relay connection (common).

—

Stage 1 heating relay.

Stage 1 cooling relay.

Modulating common.

Modulating heating signal (4-20 mA).

Modulating cooling signal (4-20 mA).

Discharge Air Sensor connection (1).

Discharge Air Sensor connection (2).

Outdoor Air Sensor connection (1).

Outdoor Air Sensor connection (2).

Fan relay.

TR20 Series remote sensor connection (GND).

TR20 Series remote sensor connection (Sensor).

TR20 Series remote sensor connection (Set Pt).

TR20 Series remote sensor connection (Bypass).

TR20 Series remote sensor connection (LED).

Humidity Sensor connection (signal: 0-10 Vdc).

Humidity Sensor connection (common).

Humidity Sensor connection (power).

Motion Sensor connection (1).

Modulating heating signal (4-20 mA).

Modulating cooling signal (4-20 mA).

Discharge Air Sensor connection (1).

Discharge Air Sensor connection (2).

Outdoor Air Sensor connection (1).

Outdoor Air Sensor connection (2).

Fan relay.

TR20 Series remote sensor connection (GND).

TR20 Series remote sensor connection (Sensor).

TR20 Series remote sensor connection (Set Pt).

TR20 Series remote sensor connection (Bypass).

TR20 Series remote sensor connection (LED).

Humidity Sensor connection (signal: 0-10 Vdc).

Humidity Sensor connection (common).

Humidity Sensor connection (power).

Motion Sensor connection (1).

Motion Sensor connection (2).

Factory jumper between RC and RH for systems with one

transformer.

Motion Sensor connection (2).

ebus ebus LonWorks Bus (1).

ebus ebus LonWorks Bus (2).

Mounting Thermostat on Subbase

(Fig. 8)

Factory jumper between RC and RH for systems with one

transformer.

Floating auxiliary contact (not connected to transformer hot or

With the subbase installed, mount the thermostat:

1. Engage the tabs at the top of the thermostat and

subbase.

common).

Swing the thermostat down.

Press the lower edge of the case to latch.

NOTE: To remove the thermostat from the wall, first

pull out at the bottom of the thermostat; then

remove the top.

63-2605—06

T7350 Commercial Programmable Thermostat

A. ENGAGE TABS AT TOP OF THERMOSTAT AND SUBBASE OR WALLPLATE.

Setting System and Fan

System default setting is Auto. Fan default setting is On.

NOTE: Use System and Fan keys to change settings.

System Settings

—

Auto: Thermostat automatically changes between heating

and cooling based on indoor temperature.

Cool: Thermostat controls only cooling.

Off: Heating, cooling, and fan are all off.

Heat: Thermostat controls only heating.

Em Heat: Auxiliary heat serves as first stage. Compressor

stages are locked off.

—

Fan Settings

—

On: See Table .

—

Auto: Fan always cycles with call for heating or cooling.

—

Conventional: The equipment (i.e. plenum switch) con-

trols fan operation in heat mode. The thermostat con-

trols fan operation in cool mode.

B. PRESS LOWER EDGE OF CASE TO LATCH.

Electric Heat: The thermostat controls fan operation

in both heat and cool modes.

NOTE: Fan operation can extend (delay Off) after the

heating/cooling turns off:

—

Heating choices are 0 or 90 seconds.

Cooling choices are 0 or 40 seconds.

Table 9. Intelligent™ Fan ON control logic

Occupancy

Motion

Call for Heat/Cool

Yes No

M19609

Scheduled

Effective

Period Sensor Signal Occupancy

Fig. 8. Mounting thermostat on subbase.

No Sensor

Occupied

Standby

Occupied Fan On Fan On

Wired

SETTINGS

Motion

Sensed

No Motion

Sensed

No Sensor

Wired

Using Thermostat Keys

Standby

Fan On

_F_a_n_O_f_fa

The thermostat keys are used to:

•

set current time and day,

Fan On_F_a_n_O_f_fa

program times and setpoints for heating and cooling,

override the program temperatures,

display present setting,

Motion

Fan On Fan Off^a

Fan On_F_a_n_O_f_fa

Sensed

set system and fan operation,

perform simple configuration.

No Motion

Sensed

No Sensor

Wired

NOTE: See Fig. 9 for keypad information.

Not

Not Occupied Fan On Fan Off^a

Occupied

Setting Temperature

Not

Motion

Refer to Table 2 for the default temperature setpoints. See

Programming section for complete instructions on changing

the setpoints.

Occupied

Sensed

Not

No Motion

Sensed

Occupied

In heat mode, when set for conventional heat, the equipment

i.e plenum switch) could power the fan despite the T7350.

(

63-2605—06

T7350 Commercial Programmable Thermostat

Temperature

Set Day/Time

Override

Temporary Temporary

Occupied Not Occupied

Occupied

Not Occupied

HEAT

Day

Time

HEAT

COOL

Schedule

System

Fan

Run

Clear

Day

Occupied Not Occupied Start Time

Copy

HEAT COOL

ON AUTO

Schedule

M19610

Fig. 9. Thermostat key locations.

INSTALLER SETUP

For most applications, the thermostat factory settings do not

need to be changed. Review the factory settings in Table 10.

NOTE: When power is first applied to the thermostat, the dis-

play will show all segments (see Fig. 10).

Table 10. Keypad Configurable Installer Setup Options^a.

Configuration Option

Degree temperature display

Factory Default

DEG F

Description

Temperature display: °F or °C

Remote room temperature sensor

LOC SEN

LOC: Use Local temperature sensor.

REM: Use Remote temperature sensor.

Clock format

12HRCLK

KYLCK 0

12HR: 12-hour clock format

24HR: 24-hour clock format

Keypad lockout level

Keypad lockout enable/disable through special keypad sequence.

: No lockout.

: Lockout all keys except Temporary Occupied, Temporary Not Occupied, ꢀ, ꢁ and

: Lockout all keys except

^b.

Conventional / heat pump selection

CONV

RVON HT

CONV: Conventional equipment.

HT PUMP: Heat Pump.

_H_e_a_t_P_u_m_p_R_e_v_e_r_s_i_n_g_V_a_l_v_ec

RVON HT: Heat pump, energize O/B on call for heat.

RVON CL: Heat pump, energize O/B on call for cool.

Configuration Variables

Hexadecimal configuration code values.

(C1,C2,C3,C4,C5,C6,C7,C8)

The code defines only Installer Configuration.

It sets neither Parameters (gains and setpoints) nor Schedules.

With the exception of Temporary Not Occupied, functions not keypad configurable require a Palm OS Configuration Tool.

Lockouts do not allow adjustments on dehumidification high limit. Special keypresses are never locked out.

Displays only when heat pump is selected.

Values vary depending on the model.

NOTE: The T7350 has serial communications to facilitate use

of an installer configuration tool. More advanced fea-

tures are available using this tool. (See the Appendix

for details.)

TemporaryStandby Set Set Schedule Room

Not Occupied12 StartTime

MonTueWedThuFriSatSunHol MinsDays

Fan

OnAuto

A combination of key presses are required to use the Installer

Setup feature:

System

EmHeat

OffCoolAuto Dehumid

To enter the Installer Setup, press and hold both the Run

Schedule and the Copy keys until DEG F (or DEG C)

displays.

M19611

Fig. 10. LCD display of all segments.

2. To advance to the next Setup item, press

NOTE: Pressing Run/Copy again while in this mode

displays the T7350 firmware version number.

Setup Using Keypad

The installer uses the Installer Setup to customize the

thermostat to specific systems. (See Table 10.) The table

includes all the configuration options available. For basic setup

functions, the thermostat can be configured using the keypad.

To return to a Setup item, cycle through the options.

To change a setting, use the up

ꢀor down ꢁ key.

5. To exit the Installer Setup, press Run Schedule.

The display prompts SAV CFG (save configuration).

63-2605—06

T7350 Commercial Programmable Thermostat

a. If you want to save the new configuration, use the

up ꢀ or down ꢁkey to change NO to YES before

pressing Run Schedule.

8. Adjust each variable to match the PDA indication:

a. Hold down the up ꢀ or down ꢁ key to adjust the

value quickly.

b. If you want the configuration to remain as it was

before starting this change, ensure the display

indicates SAV CFG NO and press Run Schedule.

b. Tap the up ꢀ or down ꢁ key for fine control.

9. Press

to switch to another variable.

10. Return to step 8 and repeat the process until all digits are

set properly.

NOTE: Installer Setup is automatically exited after five

minutes with no key pressed. Upon this auto-

matic exit, all changes are lost.

11. To exit the Installer Setup, press Run Schedule.

12. The display prompts SAV CFG (save configuration).

a. If you want to save the new configuration, use the

up ꢀ or down ꢁ key to change NO to YES before

pressing Run Schedule.

Setting Keypad Lockout

b. If you want the configuration to remain as it was

before starting this change, ensure the display

indicates SAV CFG NO and press Run Schedule.

Proper keypad sequences activate the lockout features. To

change the keypad lockout state:

Enter the Installer Setup: press and hold both the Run

Schedule and the Copy keys until DEG F (or DEG C)

displays.

IMPORTANT

1. Review the settings to confirm that they are correct

Press

until KYLCK displays.

for the system.

Use the up ꢀ or down ꢁ key to change the setting.

2. Press Run Schedule to exit the Installer Setup.

3. The thermostat prompts you to save configuration

changes. Default is NO.

Options are:

•

0: No lockout.

1: Lockout all keys except Temporary Occupied,

Temporary Not Occupied, up ꢀ, down ꢁ and

4. Be sure to set the current day and time immediately.

•

2: Lockout all keys except

Special Functions

NOTES:

—

Options 1 and 2 do not allow adjustments on

dehumidification high limit.

Restore Factory Configuration (Run/Clear)

—

No options lockout special keypresses. See the

Special Functions section for details.

IMPORTANT

This operation erases the current configuration and

restores the factory defaults for all configuration,

parameters, setpoints and schedules. To regain the

old requires device reconfiguration.

Once the proper option is chosen, exit Installer Setup by

pressing Run Schedule.

The display prompts SAV CFG (save configuration). If

you want to save it, use the up ꢀ or down ꢁ key to

change NO to YES before pressing Run Schedule again.

Press both Run Schedule and Clear Start Time.

Configuration

2. The display gives the option to restore the FAC CFG.

a. To restore the factory defaults, press up ꢀ or

down ꢁ until the display indicates YES.

b. To cancel this option, ensure display indicates NO.

Press Run Schedule.

CAUTION

Possible Equipment Damage.

Fan must be running when system is operating.

Heat pump and electric heat systems must be

configured correctly to prevent equipment damage

caused by the system running without the fan.

Get Factory Schedule (Info/Clear)

Performing this operation reverts the schedules to the factory

defaults:

Press both Info and Clear Start Time.

Limited configuration can be done with the keypad using the

Configuration ID. In order to determine the proper codes to use

for the Configuration Variables (CnfgID), spreadsheets of the

CnfgID values are available online at http://

2. The display gives the option to restore the FAC SCH.

a. To restore the factory schedule, press up ꢀ or

down ꢁ until the display indicates YES.

b. To cancel this option, ensure display indicates NO.

3. Press Run Schedule.

customer.honeywell.com/t7350.

A PDA or Honeywell's TStatSpec(TM) software can be used,

as well.

Test Mode (Occupied/Not Occupied/

Schedule Day)

Follow these instructions for identifying the CnfgID values

using TStatSpec:

Open the TStatSpec software on your PC.

Create a new configuration or open an existing configu-

ration.

CAUTION

Possible Equipment Damage.

Select the “Configuration Screen” button and configure

the settings, as desired.

Equipment damage can result if compressor is

cycled too quickly.

The minimum off time for compressors is bypassed

during Test Mode. Equipment damage can occur if the

compressor is cycled too quickly.

Click on the “Configuration ID” button on the bottom left

of the configuration screen.

Make note of the values.

Press both Copy and Run Schedule on the thermostat.

Tap

until C1 appears on the right end of the display.

63-2605—06

T7350 Commercial Programmable Thermostat

Use the Test Mode to check the thermostat configurations and

operation. To start the system test:

Save User Schedule (Info/Copy)

Performing this operation saves the current schedule

Press Schedule Day, Occupied and Not Occupied simul-

taneously.

(

including holidays) to memory, overwriting the old saved

schedule:

The display gives the option to TEST.

a. To enter test mode, press up ꢀ or down ꢁ until

the display indicates IN TEST.

Press both Info and Copy.

The display gives the option to SAV SHD.

a. To save the current schedule, press up ꢀ or down

b. To cancel this option, ensure the display indicates

NO TEST.

ꢁ

until the display indicates YES.

b. To cancel this option, ensure display indicates NO.

Press Run Schedule.

NOTES:

—

Get User Schedule (Info/Run)

Getting the user schedule restores the schedule (including

holidays) from saved memory, overwriting the schedule

currently in use:

To verify whether or not the system test is still

active, repeat the above process.

The system test times out after ten minutes with no

key pressed.

—

Press both Run Schedule and Info.

The display gives the option to GET SHD.

a. To retrieve the saved schedule, press up ꢀ or

down ꢁ until the display indicates YES.

b. To cancel this option, ensure display indicates NO.

Press Run Schedule.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 11. T7350 Key Function Summary.

Definition

Grouping

Button

Information Down Arrow

Lowers setpoint, day, or time. When setting times or temperatures, hold key down to

continuously decrease value. Also can make temporary change in temperature setpoint.

Obtains information (where humidity “high-limit” can be set), cycles through setup options.

ꢁ

ꢀ

Information

Up Arrow

Raises setpoint, day, or time. When setting times or temperatures, hold key down to

continuously increase value. Also can make temporary change in temperature setpoint.

Temperature Occupied

Heat

Sets Occupied Heat setpoint.

Sets Occupied Cool setpoint.

Sets Not Occupied Heat setpoint.

Occupied

Cool

Not

Occupied

Heat

Not

Sets Not Occupied Cool setpoint.

Occupied

Cool

Set

Day

Sets day of week. Tapping key with 'Set Value' segment on increases current day (same

effect as Up Arrow key).

Time

Sets time.

Tapping key with “Set Value” segment on increases time in one hour increments.

Override

Schedule

Temporary

Occupied

Temporary occupied setting for length of time defined by installer.

User can modify setpoints.

Temporary Not

Sets holiday length.

Occupied

User selects number of days (“0”-”99”), or “---” for continuous override.

Day

Selects day schedule to modify. (Used also with copy key.)

Occupied

Selects occupied event start times for specified day.

Repeatedly press this key to toggle between two occupied events.

Not Occupied

Selects not occupied event start times for specified day.

Repeatedly press this key to toggle between two not occupied events.

Clear

Clears start time for specified period and day.

Start Time

Copy

Copies schedule from one day to another.

System

Fan

Selects System Mode. Toggles through Em Heat, Heat, Off, Cool, and Auto modes.

_S_e_l_e_c_t_s_f_a_n_o_p_e_r_a_t_i_o_n_m_o_d_e_._T_o_g_g_l_e_s_b_e_t_w_e_e_n_O_n_a_n_d_A_u_t_o_.a

Run Schedule

Resumes running schedule.

Cancels Temporary (Not) Occupied action, and/or Temporary setpoint changes.

Fan On: Continuous fan operation during occupied periods. During not occupied and standby periods, fan cycles with call for heat

or cool.

Fan Auto: Fan cycles with call for heat or cool during all periods. (See Fan Settings section for more details.)

NOTE: The display returns to the default screen after pressing Run Schedule (or after a period of time without keypress):

—

ten seconds: when returning from temporary setpoint changes, info screen, temp occ, and temp not occ.

one minute: when returning from setting clock/day.

ten minutes: when returning from System Checkout.

five minutes: when returning from all other modes.

63-2605—06

T7350 Commercial Programmable Thermostat

PROGRAMMING

The thermostat operates at the Occupied temperature setting

until the thermostat is programmed. Table 12 shows the default

temperature settings. (The program has four):

Setting Current Day/Time

This can be done using the keypad, a PDA interface or through

TStatSpec software.

—

Occupied heat.

Occupied cool.

IMPORTANT

Not Occupied heat.

Not Occupied cool.

•

Once you set the day/time once, you should not need

to set it again. As a result, once a PDA or TStatSpec

software sets the day using calendar mode (MM/DD/

YYYY), keypad changes to the day are not allowed.

Table 12. Occupied and Not Occupied

Default Temperature Settings.

Control

Occupied

70° F (21° C)

75° F (24° C)

Not Occupied

NOTES: To allow keypad day changes, use a PDA or

TStatSpec as follows:

Heating

Cooling

55° F (13° C)

85° F (29° C)

Go to the “Set Clock” function.

Change the “Date Mode” from “MM/DD/YYYY” to

“Day of Week”.

Press Set.

The thermostat can be set for two Occupied and two Not

Occupied times for each day of the week (28 independent time

settings). Programming Holidays provides a total of 32

independent time settings.

When using the keypad to change the day/time:

1. Press Set Day until the current day is displayed.

The Temporary Occupied key provides quick temporary

temperature changes for increased occupant comfort. The

Temporary Not Occupied key provides energy efficient

operation for extended periods of time.

NOTE: Sun = Sunday, Mon = Monday, Tue = Tuesday,

Wed = Wednesday, Thu = Thursday,

Fri = Friday, Sat = Saturday.

Press Set Time.

IMPORTANT

Press up ꢀ or down ꢁ until the current time is

•

Programming the thermostat with the keypad requires

4 Vac (turn on system power).

Keyboard lockout must be disabled.

displayed.

•

NOTE: Tapping Set Time changes the time in one hour

increments.

NOTE: Before starting the program procedure, use

Table 13 to organize the program schedule.

Press Run Schedule.

Table 13. Occupied and Not Occupied Period Start Times.

Setting Schedule Times

Not

Occupied

Period 1

Not

Occupied

Period 2

Use the PDA, TStatSpec software, or the keys in the

Occupied

Period 1

Occupied

Period 2

“Schedule” area of the keypad for this procedure.

Day

Monday

Press Occupied.

NOTE: Anytime a start time is not required, press Clear

Start Time.

Tuesday

Wednesday

Thursday

Friday

Press Day until the desired day is displayed.

Press Occupied or Not Occupied until the proper period

is displayed.

Press up ꢀ or down ꢁ until the desired start time is

displayed.

Repeat steps 3 and 4 for a given day.

Repeat steps 2 through 5 until finished.

Saturday

Sunday

Program Holidays

IMPORTANT

_H_o_l_i_d_a_ya

— Holidays must be first programmed with a PDA or

through TStatSpec software.

—

Day-of-Week mode forces the T7350 to ignore

holidays.

Only applies to holidays programmed with 365-day calendar

NOTE: 12:00 PM is Noon, and 12:00 AM is Midnight.

With holidays set, holiday schedule times can be changed

using the keypad:

Use the Schedule Day key to select “Hol” for Holiday

schedule times.

Press Occupied or Not Occupied to switch to the proper

time period within the holiday.

63-2605—06

T7350 Commercial Programmable Thermostat

Press up ꢀ or down ꢁ until the desired time is

displayed.

The Maximum Occupied Heat Setpoint is limited

by Occupied Cool Setpoint – 2° F (1° C).

Press Run Schedule.

The Minimum Occupied Cool Setpoint is limited by

the Occupied Heat Setpoint + 2° F (1° C).

IMPORTANT

—

Invalid holidays are ignored.

Programming Temperature Setpoints

Valid holidays require valid: month, day and duration.

Holidays such as the fifth Tuesday of a month with

only four Tuesdays are also invalid.

Press Occupied Heat.

Press up ꢀ or down ꢁ until the desired

temperature is displayed.

Press Occupied Cool.

Copying a Day

4. Press up ꢀ or down ꢁ until the desired

temperature is displayed.

Use the PDA, TStatSpec, or keys in the “Schedule” area of the

Press Not Occupied Heat.

keypad for this procedure:

Press up ꢀ or down ꢁ until the desired

temperature is displayed.

Press Occupied.

Press Day to select the day to be copied.

Press Copy.

Press Not Occupied Cool.

Press up ꢀ or down ꢁ until the desired

temperature is displayed.

Press Copy again. The following day is automatically

selected. (For example: If the day to be copied is Mon-

day, Tuesday will automatically be selected.)

If necessary, press Day until the day to receive the copy

is displayed.

Press Run Schedule.

Temperature Setpoint Overrides

NOTE: To cancel the copy press Run Schedule before

IMPORTANT

step 6.

—

The setup determines the duration of Occupied

overrides.

Press Copy.

—

Default duration is three hours.

NOTE: DONE displays for two seconds then the

program display reappears.

NOTE: To cancel the Override and immediately return to the

program, press Run Schedule.

Repeat steps 2 through 6 for all the days desired.

TR23 Setpoint Knob

Press Run Schedule.

A TR23 setpoint knob can remotely adjust the T7350 setpoint.

Adjustment can be made with the sensor in override.

Clearing Program Start Times

Press Occupied or Not Occupied until the start period to

be cleared is displayed.

NOTES:

—

During override, only occupied and standby heat

setpoints, and cool setpoints are adjusted.

The maximum adjustment is ±5° F (3° C).

With a disconnected or failed TR23, or a T7350

not set for remote+setpoint, offset is zero.

Press Day until desired day is displayed.

Press Clear Start Time.

—

Repeat steps 1 through 3 for all the start times to be

cleared.

Press Run Schedule.

T7771 Setpoint Button

Temperature Setpoints

A T7771 setpoint button can remotely adjust the T7350

setpoint. Adjustment can be made with the sensor in override.

Setpoint Limits

NOTES:

The setpoint temperature range is 40°F to 90°F (4°C to 32°C)

—

During override, only occupied and standby heat

setpoints, and cool setpoints are adjusted.

The maximum adjustment is ±3° F (2° C).

With a disconnected or failed T7771, or a T7350

not set for remote+setpoint, offset is zero.

for heating and 45°F to 99°F (7°C to 37°C) for cooling.

—

NOTES: The ranges mentioned can be limited based upon set-

points and stops:

The greater of the Minimum Heat Stop and the Not

Occupied Heat setpoints determines the

lowest setting to which the occupied heat setpoint

can be adjusted:

Changing Temperature Setpoint Until Next

Program Period

This is a simple change to perform even with the door closed:

1. Press up ꢀ or down ꢁ until the desired

temperature is displayed.

F: Stop/NotOcc ≤ OccHeat ≤ (OccCool - 2).

C: Stop/NotOcc ≤ OccHeat ≤ (OccCool - 1).

The lesser of the Maximum Cool Stop and Not

Occupied Cool setpoints determines the highest

setting to which the occupied cool setpoint can be

adjusted:

NOTE: If done while in Standby or Not Occupied mode,

Temporary Occupied override engages

°F: Stop/NotOcc ≥ OccCool ≥ (OccHeat + 2).

C: Stop/NotOcc ≥ OccCool ≥ (OccHeat + 1).

2. The temporary temperature appears for approximately

ten seconds, then the room temperature is displayed.

63-2605—06

T7350 Commercial Programmable Thermostat

NOTES:

—

Using Temporary Occupied Override

The Temporary Occupied Override can be used when the

T7350 is in Not Occupied or Standby mode. It switches to the

Occupied mode for a fixed number of hours.

If the number of days is set to zero, no temporary

change takes effect.

—

If the number of days is set just below zero, the

display for days is “---” (an indefinite override).

To turn off this override, you must press Run

Schedule.

To use the default occupied override, press Temporary

Occupied.

Press Temporary Not Occupied.

NOTE: The default temperature setting is the

Occupied setpoint.

Press up ꢀ or down ꢁ to change the duration of the

Not Occupied period (in days).

To select a temperature setting other than the default,

press up ꢀ or down ꢁ until the desired temperature

offset is displayed (range is 0° F to 3° F [0° TO 2° C]).

NOTE: The default temperature setting is the

Not Occupied setpoint.

Press

to display the default setpoint.

NOTE: This offset can be restricted by the limits

detailed in the Setpoint Limits section.

NOTE: The only way to change this setpoint is to

change the Not Occupied setpoint.

Using Temporary Not Occupied Override

The Temporary Not Occupied Override fixes the device to

operate in Not Occupied mode for a number of days (between

and 99) without changing programming saved in memory.

63-2605—06

T7350 Commercial Programmable Thermostat

OPERATION

NOTE: The O/B terminal can be configured to operate as a

typical B terminal (powered on call for cool).

Startup Operation

Upon initial thermostat powerup, a startup and initialization

program begins. This startup occurs only on initial powerup.

After total loss of power for an extended period, the current

time and day can be lost (requiring reset). However, the

thermostat retains the user program.

Emergency Heat

(

select T7350 Thermostats only)

With the system set for Em Heat, auxiliary heat serves as

stage one; compressor stages are locked off. The fan cycles

with the auxiliary heat.

NOTE: With no program set, the thermostat controls to the

Occupied default setpoints of 70°F (21°C) for heat

and 75°F (24°C) for cool.

Equipment Protection

T7350 Relay Logic

As part of the operational sequence, the T7350

All T7350 model thermostats contain four switching relays. In

conventional applications, the relays control first stage cooling,

first stage heating, fan, and auxiliary. In heat pump

applications, the relays control the heat pump compressor,

changeover, fan, and emergency heat.

microprocessor incorporates cycle rate, and minimum on and

off times for all heating and cooling stages. This extends

equipment life as it prevents rapid cycling of equipment.

NOTE: Minimum on and off times are fixed.

NOTE: Models T7350B,D, T7350H1009 have subbases with

more relays to accommodate extra stages.

Cycle Rates

The thermostat control algorithm maintains the temperature by

cycling stages of heating or cooling to meet setpoint. Cycle

rates, in cycles per hour (cph) are set using a PDA or

TStatSpec software.

Logic with Modulating Outputs

(

T7350H1017, M, only)

The specific relay logic depends on whether or not staging is

NOTE: Defaults are: heat: 6cph, cool: 3cph.

employed. See Table 14.

NOTE: The modulating outputs always provide a signal.

P+I+D Control

The T7350 microprocessor-based control requires that the

user understands temperature control and thermostat

performance. A conventional electromechanical or electronic

thermostat does not control temperature precisely at setpoint.

Typically, there is an offset (droop) in the control point as the

system load changes. This is a phenomenon that most people

in the industry know and accept.

Table 14. T7350 Modulating Relay Logic Exceptions.

Relay Action

Modulating

Heat/

Output^a

Stages Cool

Fan

Output reaches 10%: On

Output falls below 5%: Off

(

1 to 100

percent)

or 2

Staged On/Off matches equipment

IMPORTANT

Cycling stage operation

•

P+I+D (Loop Tuning) parameters are optimized for

proper operation of a vast majority of HVAC systems.

Only when completely certain of necessary and

proper changes should you alter these values.

Improper changes result in poor system performance

and equipment problems such as compressor short

cycling. Other problems include wide swings in space

temperature and excessive overdriving of modulating

outputs.

Off

0,1, or 2 Off

Off

(

0 percent)

See Table 15 for modulating output signal details.

•

To display the status of the modulating outputs:

Cycle through information displays using the info key.

The device displays a percentage value for each output:

a. MODHEAT on one screen.

b. MODCOOL on another screen.

All adjustments to Loop Tuning parameters should be gradual.

After each change, allow the system to stabilize to accurately

observe the effects of the change. Then, as needed, make

further refinements until the system operates as desired.

Table 15. Modulating Output Signal.

Action

0 percent

4 mA

20 mA

100 percent

20 mA

4 mA

If adjustment of PID parameters is required, use the following:

Direct

Reverse

NOTE: In the items that follow, the term “error” refers to the

difference between the measured space temperature

and the current actual space temperature setpoint:

O/B Terminal for Heat or Cool

Changeover

—

The Throttling Range (TR), also called Proportional Gain,

determines the impact of the error on the output signal.

Decreasing TR amplifies the error effect; that is, for a given

error, smaller TR causes higher output signal.

The O/B terminal controls heat pump changeover. The default

operation is for the terminal to be powered when calling for

heat (or while the most recent call was for heat). This

corresponds to a typical O terminal.

— The Integral Time (IT), also called Integral Gain,

determines the impact of the error-over-time on the output

63-2605—06

T7350 Commercial Programmable Thermostat

signal. Error-over-time has two components making up its

value: amount of time the error exists; and size of the error.

The higher the IT, the slower the control response. In other

words, a decrease in IT causes a more rapid change to the

output signal.

—

Other setpoint changes use a setpoint step

change.

Recovery Ramping for Heat Pump Systems

During recovery with heat pump equipment, the heating

setpoint is split into a heat pump setpoint for compressors, and

two auxiliary heat setpoints for the auxiliary heat stages. (See

Fig. 12 for the various setpoints.)

—

The Derivative Time (DT), also called Derivative Gain,

determines the impact of the error rate on the output signal.

The error rate is how fast the error value changes. It can

also be the direction the space temperature is going, either

toward or away from the setpoint, and its speed—rapid or

slow. A decrease in DT causes, for a given error rate, a

greater effect on output signal.

HEAT PUMP SETPOINT

(FOR COMPRESSORS)

OCCUPIED

SETPOINT

Recovery Ramping Logic

NORMAL

RECOVERY RAMP

The T7350 incorporates a ramping feature that gradually

changes the space setpoints. During recovery operation, the

setpoint changes at a rate in degrees per hour depending on

the outdoor air temperature. If there is no outdoor air

AUX HEAT

STAGE 2 RAMP

NOT OCCUPIED

SETPOINT

AUX HEAT

STAGE 1 RAMP

temperature sensor available, the minimum ramp rate is used.

SPACE

TEMPERATURE

When recovering in heating, the control point raises gradually,

maximizing the use of the more economical first stage heat to

bring the sensed temperature to the desired comfort setpoint.

This minimizes using the typically more expensive later

stage(s) of heat.

RECOVERY TIME

OCCUPIED

TIME

M19877

NOTE: See Fig. 11 for a pictorial representation of the heat

ramp rate determination.

Fig. 12. Heat setpoint ramping for heat pump systems.

Heat pump ramping for heating proceeds as follows:

The heat pump setpoint begins to ramp until the room

temperature and the compressor ramp intersect.

At this point, the heat pump setpoint performs a step

change to the Occupied (or Standby) setpoint and all

auxiliary heat stages are disabled.

Recovery Ramping for Conventional

Systems

HEAT RECOVERY

RAMP RATE

(

DEGREES/HOUR)

NOTE: The heat pump setpoint remains here for the

rest of the Not Occupied period.

MaxHtRamp

The stage one auxiliary heat ramp is calculated based on

a steeper slope starting 1° F (0.5° C) below the not occu-

pied setpoint.

When the room temperature intersects this auxiliary heat

ramp, the first stage of auxiliary heat is enabled.

The stage two auxiliary heat ramp is calculated based on

an even steeper slope starting 2° F (1° C) below the not

occupied setpoint.

MinHtRamp

When the room temperature intersects this auxiliary heat

ramp, the second stage of auxiliary heat is enabled.

OUTDOOR AIR

TEMPERATURE

OaTempMinHtRamp

OaTempMaxHtRamp

During the cool recovery period, the setpoint changes at a rate

in degrees per hour relative to the outdoor air temperature. If

there is no outdoor air temperature sensor available, the

minimum ramp rate is used.

M10109A

Fig. 11. Heat setpoint ramping for conventional systems.

NOTES:

See Fig. 13 for the various setpoints.

—

Recovery ramping applies between scheduled

heat or cool setpoint changes from not occupied to

standby and not occupied to occupied.

NOTE: For cooling, the same method is used in both

conventional and heat pump systems.

63-2605—06

T7350 Commercial Programmable Thermostat

Relay for Time-Of-Day (Table 16)

COOL RECOVERY

RAMP RATE

Time-of-day (TOD) is the Auxiliary Relay default configuration.

TOD logic operates strictly according to programming:

(

DEGREES/HOUR)

—

Occupied: Relay contacts closed.

Not Occupied: Relay contacts open.

Standby (Scheduled): Relay contacts open.

MaxClRamp

Relay for Economizers

Mechanical cooling is often used with outside temperatures in

the 50°F (10°C) to 60°F (16°C) range and humidity below 50

percent. In central and northern climates, hundreds of hours

fall into this temperature category. By permitting 80 to 100

percent outside air into the system, mechanical cooling may

not be needed at all, particularly during Spring and Fall.

MinClRamp

OUTDOOR AIR

TEMPERATURE

Economizers take advantage of outside air. The typical

economizer consists of an outside air damper, motor, outdoor

air changeover control and a minimum position potentiometer.

The motor controls the dampers. Suitability of the outside air

for cooling is determined by the outdoor air changeover

control. The potentiometer adjusts the minimum position of the

economizer dampers, which provide a minimum amount of

fresh air for ventilation.

OaTempMinClRamp

OaTempMaxClRamp

M10111A

Fig. 13. Setpoint ramping parameters with ramp rate

calculation.

NOTE: The setpoint used during the cool recovery period is

similar to the heat mode in Fig. 11, except the slope of

the line reverses for cooling.

The economizer reduces compressor run time, thereby saving

energy and extending compressor life. The drawback to using

the economizer is that during the Not Occupied period, if there

is no call for cool or outdoor air is not suitable for free cooling,

the economizer is controlled to minimum position. This position

allows some percentage of outdoor air to enter the building,

regardless of air suitability. The situation can cause the heating

or cooling to run more often than when only suitable air is

permitted to enter the building.

Advantages:

•

Comfort setting is achieved at the programmed time and

maintained regardless of weather conditions; occupants are

comfortable.

•

Drafts from low-temperature discharge air are minimized

during Occupied periods.

Use of the more economical first stage of heat is maximized

during recovery, minimizing use of the expensive later heat

stage(s).

The T7350 can take advantage of an economizer by closing

the auxiliary relay contacts to control the economizer minimum

position potentiometer. (See Table 16 for details.)

•

Comfort and energy savings can be achieved in both

heating and cooling.

Heat cycling reduced, extending equipment life.

—

Powered: Allows normal economizer operation.

Unpowered: Disables the economizer minimum position.

The lack of power causes the economizer to drive dampers

fully closed instead of staying at minimum open position.

This reduces the possibility of unsuitable outdoor air

entering the building, which lowers the internal load on the

HVAC system and saves additional energy.

Auxiliary Relay

The auxiliary relay can be used with a variety of controls:

•

Time-of-day (TOD).

Economizer minimum position control.

Dehumidification (see Dehumidification section).

63-2605—06

T7350 Commercial Programmable Thermostat

T7350A,B,D,M SUBBASE

AUX

Table 16. Auxiliary Relay Logic (Economizer and TOD)

Occupancy

Auxiliary Contacts

LOAD

Motion

Sensor

Signal

AUXILIARY

RELAY

Scheduled

Period

Effective

Economizer

TOD

Occupancy

Occupied

Standby

CONTACT

Closed^b

Occupied Sensor

Wired

Closed

RELAY REQUIRED (R8222 OR SIMILAR).

M19613

Motion

Closed^b

Occupied

Fig. 14. Using T7350A,B,D,M models with an external relay

with loads greater than 1.5A).

Sensed

(

Occupied Motion

Sensed

Open; Closed

only during calls Open

for cool

T7350H SUBBASE

AUX

Open; Closed

Standby

Sensor

Wired

Standby

only during calls Open

LOAD

for cool

AUX

AUXILIARY

RELAY

CONTACT

Open; Closed

Motion

only during calls Open

Sensed

for cool

Open; Closed

Motion

Sensed

only during calls Open

for cool

RELAY REQUIRED (R8222 OR SIMILAR).

M22487

Open; Closed

Not

Sensor

Wired

only during calls Open

Fig. 15. Using T7350H models with an external relay

powered from thermostat transformer.

Occupied

for cool

Open; Closed

Not

Motion

Not

only during calls Open

T7350H SUBBASE

Occupied Sensed

Occupied

for cool

AUX

Not

Open; Closed

Not

Motion

only during calls Open

LOAD

Occupied

Sensed

Occupied

AUX

for cool

AUXILIARY

RELAY

CONTACT

Unless otherwise, noted, Economizer logic ignores calls for

heat. The Economizer relay will be energized during calls for

cooling.

With fan set to AUTO and call for neither heat nor cool, the

relay is open in order to disable damper minimum position.

(

HOT)

RELAY REQUIRED (R8222 OR SIMILAR).

AUXILIARY

POWER SUPPLY. PROVIDE DISCONNECT MEANS TRANSFORMER

AND OVERLOAD PROTECTION AS REQUIRED.

M22488

Fig. 16. Using T7350H models with an external relay

powered from an auxiliary transformer.

Other Uses for the Auxiliary Relay

Examples of other uses of the auxiliary relay are hot water

heaters, lighting, or baseboard heat. The additional loads are

connected to the auxiliary relay contacts on the subbase. The

contacts are rated for 1.5A at 30 Vac, but can be adapted to

higher current applications using an external relay.

Default Auxiliary Relay Operations

(

T7350D, T7350H1009 only)

Unless configured as a stage of heating or cooling, terminals

W2, W3, and Y3 operate for specific auxiliary functions. Each

output takes on different auxiliary functions depending on

configuration for Conventional or Heat Pump operation. See

Table 17 for details.

(See Fig. 14 through 16.)

NOTE: The default functions cannot be modified. They are

limited to firmware version 1.3.0 or higher.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 17. Default Auxiliary Relay Operations.

Contact Not Used

Heat Pump or

Conventional as Heat or Cool Stage

Contact Configuration of Contact Not Used as Stage

Heat Pump

Y3 not

Simple

Time of Day

Dehumidification

W2 not aux heat

W3 not

Economizer

Simple

Time of Day

Simple

Dehumidification

Time of Day

Simple

Dehumidification

Economizer

Simple

Dehumidification

Time of Day

Simple

Dehumidification

Economizer

Time of Day

Conventional

Dehumidification^a

Economizer

Simple

Y3 not (W3 not)

Y3 not (W3 used)

Economizer

Time of Day

Dehumidification

Hot Gas Bypass

Simple

Auxiliary Contact Configuration^b:

Time of Day

Economizer

Dehumidification Dehumidification

Simple dehumidification uses a normally closed contact. The relay is closed when humidity is below the high limit. When the

humidity is above the high limit, the contact is open.

The PDA configuration tool output screen displays available Auxiliary Relay functions based on this configuration.

63-2605—06

T7350 Commercial Programmable Thermostat

—

The T7350H1017, T7350M do not support the

Reheat method.

Dehumidification (T7350D,M,H only)

There are five methods through which the T7350 can control

for dehumidification. Three of them modify the control

algorithm, thus providing limited dehumidification through

cooling. The other two use the auxiliary output to control

another device.

RESET TEMP SETPT

The room temperature set point resets to a specified number of

degrees below the actual set point when room relative humidity

(

RH) rises above humidity high limit.

IMPORTANT

Though this may not technically reduce RH, it reduces the dew

point to provide the customer with a sense of comfort due to a

lower temperature setting in the room.

Configurable only with a PDA, TStatSpec software, or

a network tool such as LonSpec or CARE.

NOTE: The dehumidification high limit can be set within the

range of 10 to 90 percent relative humidity.

As long as RH stays above humidity high limit, this set point is

maintained.

NOTE: Hysteresis and a minimum timer prevent the set point

from short interval alternation (between standard and

reset set points).

Control Through Cooling

Configure using some combination of the following:

—

Minimum On.

Reheat.

Options Utilizing Auxiliary Output

Reset.

There are two dehumidification options that utilize the auxiliary

output. They are:

NOTES:

—

Simple Dehumidification.

—

These methods operate only during cooling.

Selecting both Reheat and Reset can cause

frequent setpoint adjustments. This selection

is not recommended.

Hot Gas Bypass Dehumidification.

SIMPLE DEHUMID(IFICATION)

The auxiliary output:

MIN ON TIME

— Energizes when RH rises above humidity high limit.

—

De-energizes when RH drops below humidity high limit.

Dehumidifies by increasing the compressor minimum on time

(

normally 3 minutes) by a programmable amount. This is useful

NOTES:

—

with oversized systems in that it forces the coils to cool to a

point where dehumidification can occur.

Hysteresis and a minimum timer prevent short

cycling of this output.

—

Unlike Dehumid Hot Gas BP the relay remains

energized during calls for multiple cooling stages.

NOTES:

—

Can force wider temperature swings by cooling

when setpoint control does not require it.

The minimum on time can be set within the range

of 5 to 15 minutes.

DEHUMID HOT GAS BP

The auxiliary output operates as shown in Table 18.

Hysteresis and a minimum timer are used to

ensure this behavior does not change with every

equipment cycle.

Table 18. Hot Gas Bypass Dehumidification Logic.

Humidity

High

Cooling Stages Active

more than one

one or less

Auxiliary Output

De-energized

Energized

REHEAT

Dehumidifies by operating cooling during typical off time. The

T7350 maintains the proper setpoint by running the heat at the

same time.

Low

more than one

one or less

De-energized

IMPORTANT

At times during Reheat dehumidification, the T7350

operates heating and the cooling simultaneously. This

is normal.

Auxiliary output during call for multiple cooling stages for two

reasons:

This method assumes that the cooling provides dehu-

midification.

NOTES:

Multiple cooling stages probably provide necessary

dehumidification.

—

The heat stage never energizes during Reheat if

more than one cool stage is on.

—

Reheat mode cannot occur during heating.

NOTE: Hysteresis and a minimum timer prevent short cycling

of this output.

63-2605—06

T7350 Commercial Programmable Thermostat

TROUBLESHOOTING GUIDE (TABLE 19)

Table 19. Troubleshooting Information.

Possible Cause

Display will not come on. Thermostat is not being powered.

Symptom

Action

Check that X terminal is connected to the system

transformer.

Check for 24 Vac between X and RH or RC terminals.

If missing 24 Vac:

•

Check if circuit breaker is tripped; if so, reset circuit

breaker.

•

Check if system fuse is blown; if so, replace fuse.

Check if the HVAC equipment power switch is in the Off

position; if so, set to the On position.

Check wiring between thermostat and HVAC

equipment. Replace broken wires and tighten loose

connections.

•

If 24 Vac is present, proceed with troubleshooting.

Temperature display is

incorrect.

Room temperature display has been

recalibrated.

Use PDA configuration software or TStatSpec software to

recalibrate as desired.

Thermostat is configured for °F or °C

Press both Run Schedule and Copy, then reconfigure the

display.

Bad thermostat location.

Relocate the thermostat.

Display shows three dashes and a degree T7350 is set for remote sensing and sensor is missing or

sign (all systems shut down).

circuit is either open or shorted.

Check the temperature setpoints:

Temperature settings will Upper or lower temperature limits were

not change.

reached.

•

Heating limits are 40° to 90° F (7° to 31° C)

Cooling limits are 45° to 99° F (9° to 37° C)

(

Example: Cannot set

heating higher or cooling

lower.)

Occupied setpoint temperature range

stops were configured.

Using a PDA or TStatSpec software, check setpoint stops.

If necessary, reconfigure the stop(s).

Keypad is locked. When a locked key is

pressed, LOCKED appears momentarily

on the LCD.

•

Use PDA (Set, Display) or TStatSpec software to

unlock keypad.

Press both Run Schedule and Copy, then change

keypad lock level.

Room temperature is out Remote temperature sensing is not

Check all remote sensors.

of control.

working.

Heat will not come on.

No power to the thermostat.

Check that X terminal is connected to the system

transformer.

Check for 24 Vac between X and RH terminals.

If missing 24 Vac:

•

Check if circuit breaker is tripped; if so, reset circuit

breaker.

•

Check if system fuse is blown; if so, replace fuse.

Check if the HVAC equipment power switch is in the Off

position; if so, set to the On position.

Check wiring between thermostat and HVAC

equipment. Replace broken wires and tighten loose

connections.

•

If 24 Vac is present, proceed with troubleshooting.

Thermostat minimum off time is activated. • Wait up to five minutes for the system to respond.

•

Use PDA or TStatSpec software to configure heating

response.

System selection is set to Off or Cool.

Set system selection to Heat or Auto.

DAT high limit has been reached, or

•

If the setpoints are correct, do nothing.

OAT lockout is engaged.

Use PDA (Heating Config) or TStatSpec software to

adjust or disable DAT high limit and/or OAT lockout.

Check HVAC equipment to ensure proper operation.

•

63-2605—06

T7350 Commercial Programmable Thermostat

Table 19. Troubleshooting Information. (Continued)

Possible Cause

Cooling will not come on. No power to the thermostat.

Symptom

Action

Check that X terminal is connected to the system

transformer.

Check for 24 Vac between X and RC terminals.

If missing 24 Vac:

•

Check if circuit breaker is tripped; if so, reset circuit

breaker.

•

Check if system fuse is blown; if so, replace fuse.

Check if the HVAC equipment power switch is in the Off

position; if so, set to the On position.

Check wiring between thermostat and HVAC

equipment. Replace broken wires and tighten loose

connections.

•

If 24 Vac is present, proceed with troubleshooting.

Thermostat minimum off time is activated. • Wait up to five minutes for the system to respond.

•

Use PDA or TStatSpec software to configure cooling

response.

System selection is set to Off or Heat.

Set system selection to Cool or Auto.

DAT low limit has been reached, or

•

If the setpoints are correct, do nothing.

OAT lockout is engaged.

Use PDA (Cooling Config) or TStatSpec software to

adjust or disable DAT low limit and/or OAT lockout.

Check HVAC equipment to ensure proper operation.

•

System indicator (flame: The call for heat or cool is not yet given.

heat, snowflake: cool) is

Check if any stage indicators (dots next to the system

indicator) are displayed. With no display of stage

indicators, no call for cool/heat via relay is yet given.

For T7350M models only: Check the information screens.

MODHEAT or MODCOOL percentages of zero and 100

indicate an extreme signal from the given terminal. See

Table 15 for details.

displayed, but no warm or

cool air is coming from

the registers.

Conventional heating equipment turns the Wait one minute after seeing the on indicator and then

fan on only after the furnace has warmed check the registers.

to a setpoint.

Heating or cooling equipment is not

Verify operation of heating or cooling equipment in Test

operating.

Mode.

63-2605—06

T7350 Commercial Programmable Thermostat

WIRING DIAGRAMS (FIG. 17-25)

SUBBASE

RH RC AUX W1

HEAT

FAN

RELAY 1

RELAY

COMPRESSOR

CONTACTOR 1

HEAT

RELAY 2

(

HOT)

(HOT)

HEATING

TRANSFORMER

COOLING

TRANSFORMER

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

M19764A

Fig. 17. Typical hookup of T7350A in two-stage heat and one-stage cool conventional system

with two transformers.

TR23 REMOTE SENSOR

OUTDOOR

AIR

SENSOR

COMPRESSOR

CONTACTOR 2

10 11 12

DISCHARGE

AIR

SENSOR

HEAT

RELAY 2

SUBBASE

T3 OS

RH RC AUX W1

HEAT

RELAY 1

FAN

RELAY

COMPRESSOR

CONTACTOR 1

ECONOMIZER

(

HOT)

(HOT)

HEATING

TRANSFORMER

COOLING

TRANSFORMER

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M32140

Fig. 18. Typical hookup of T7350B in two-stage heat and two-stage cool conventional system

with two transformers.

63-2605—06

T7350 Commercial Programmable Thermostat

TR23 REMOTE SENSOR

OUTDOOR

AIR

SENSOR

AUX HEAT

STAGE 1

10 11 12

DISCHARGE

AIR

SENSOR

COMPRESSOR

CONTACTOR 2

SUBBASE

RH RC AUX O/B Y1

CHANGE

OVER

FAN

RELAY

COMPRESSOR

CONTACTOR 1

ECONOMIZER

HOT)

(

(HOT)

HEATING

TRANSFORMER

COOLING

TRANSFORMER

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M32142

Fig. 19. Typical hookup of T7350B in three-stage heat and two-stage cool heat pump system

with two transformers.

TR23-H REMOTE SENSOR

OUTDOOR

AIR

SENSOR

COMPRESSOR

CONTACTOR 2

ECONOMIZER

10 11 12

DISCHARGE

AIR

SENSOR

HEAT

RELAY 3

HEAT

RELAY 2

SUBBASE

AS AUX W3/Y4 Y3

RH RC AUX W1

COMPRESSOR

CONTACTOR 3

HEAT

RELAY 1

FAN

RELAY

HUMIDITY

SENSOR

MOTION

SENSOR

COMPRESSOR

CONTACTOR 1

(

HOT)

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

NO NEED TO WIRE HC TERMINAL BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED

TO TERMINAL 1 COMMON AT THE SENSOR.

M29255

Fig. 20. Typical hookup of T7350D in three-stage heat and three-stage cool conventional system with one transformer.

63-2605—06

T7350 Commercial Programmable Thermostat

TR23-H REMOTE SENSOR

OUTDOOR

AIR

SENSOR

HEAT

RELAY 2

10 11 12

DISCHARGE

AIR

SENSOR

COMPRESSOR

CONTACTOR 2

CONTACTOR 4

W3/Y4 Y3

SUBBASE

RH RC AUX W1

COMPRESSOR

CONTACTOR 3

HEAT

RELAY 1

FAN

RELAY

HUMIDITY

SENSOR

MOTION

SENSOR

COMPRESSOR

CONTACTOR 1

ECONOMIZER

(

HOT)

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL

BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1

COMMON AT THE SENSOR.

M29254

Fig. 21. Typical hookup of T7350D in two-stage heat and four-stage cool conventional system.

TR23-H REMOTE SENSOR

OUTDOOR

AIR

SENSOR

COMPRESSOR

CONTACTOR 2

ECONOMIZER

10 11 12

DISCHARGE

AIR

SENSOR

HEAT

RELAY 3

HEAT

RELAY 2

SUBBASE

T3 OS

AS AUX W3/Y4 Y3

RH RC AUX W1

COMPRESSOR

CONTACTOR 3

LONWORKS®

HEAT

RELAY 1

HUMIDITY

SENSOR

MOTION

SENSOR

FAN

RELAY

BUS

LONWORKS®

BUS

COMPRESSOR

CONTACTOR 1

(

HOT)

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL

BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1

COMMON AT THE SENSOR

M32145

Fig. 22. Typical hookup of T7350H1009 in three-stage heat and three-stage cool conventional system with one

transformer.

63-2605—06

T7350 Commercial Programmable Thermostat

TR23-H REMOTE SENSOR

OUTDOOR

MODULATING

AIR

–

COOL

SENSOR

(4-20 mA)

10 11 12

DISCHARGE

AIR

SENSOR

MODULATING

–

HEAT

(4-20 mA)

SUBBASE

T3 OS

MX MH MC

AUX

RH RC AUX W1

LONWORKS

HEAT

RELAY 1

FAN

HUMIDITY

SENSOR

MOTION

SENSOR

BUS

RELAY

LONWORKS

BUS

COMPRESSOR

CONTACTOR 1

ECONOMIZER

(HOT)

HEATING

TRANSFORMER

COOLING

TRANSFORMER

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL

BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1

COMMON AT THE SENSOR.

M32144

Fig. 23. Typical hookup of T7350H1017 for system with two independent heat stages (one modulating),

two independent cool stages (one modulating), and two transformers.

TR23-H REMOTE SENSOR

OUTDOOR

AIR

SENSOR

MODULATING

–

COOL

(4-20 mA)

10 11 12

DISCHARGE

AIR

SENSOR

MODULATING

–

HEAT

(4-20 mA)

SUBBASE

AS MX MH MC

RH RC AUX W1

HEAT

RELAY 1

FAN

RELAY

HUMIDITY

SENSOR

MOTION

SENSOR

COMPRESSOR

CONTACTOR 1

ECONOMIZER

(

HOT)

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

ENSURE TRANSFORMER IS SIZED TO HANDLE THE LOAD.

HEAT/COOL SYSTEMS WITH ONE TRANSFORMER REQUIRE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL

BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1

COMMON AT THE SENSOR.

M32364

Fig. 24. Typical hookup of T7350M for system with two independent heat stages (one modulating),

two independent cool stages (one modulating), and one transformer.

63-2605—06

T7350 Commercial Programmable Thermostat

TR23-H REMOTE SENSOR

OUTDOOR

AIR

SENSOR

MODULATING

–

COOL

(4-20 mA)

10 11 12

DISCHARGE

AIR

SENSOR

MODULATING

–

HEAT

(4-20 mA)

SUBBASE

MX MH MC

RH RC AUX W1

HEAT

RELAY 1

FAN

RELAY

HUMIDITY

SENSOR

MOTION

SENSOR

COMPRESSOR

CONTACTOR 1

ECONOMIZER

(

HOT)

(HOT)

HEATING

TRANSFORMER

COOLING

TRANSFORMER

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

WHEN USING THE TR23-H FOR HUMIDITY SENSING THERE IS NO NEED TO WIRE HC TERMINAL

BECAUSE THE T3 TERMINAL IS INTERNALLY TIED TO HC, WHICH IS ALSO TIED TO TERMINAL 1

COMMON AT THE SENSOR.

M32143

Fig. 25. Typical hookup of T7350M for system with two independent heat stages (one modulating),

two independent cool stages (one modulating), and two transformers.

63-2605—06

T7350 Commercial Programmable Thermostat

APPENDIX - PDA USAGE

See Table 20 for the advanced setup options available through

a PDA.

OFFLINE CONFIGURATION

While disconnected from the thermostat, you can arrange and

save named configurations.

NOTE: Upon initial thermostat power-up, wait at least 30 sec-

onds before connecting the TIM.

NOTE: The user can note the Configuration ID and manually

set the code using the T7350 user interface.

Hardware Requirements

CONNECT AND CONFIGURE

The Thermostat Configuration Tool has the following

configuration:

Connect to a thermostat and:

— configure device with existing named parameter

arrangement,

•

PDA hardware platform supporting application software.

Serial Connection Cable with TIM. The interface plug

connects to the thermostat socket.

— configure device by changing all parameters

— read the existing configuration parameter values and

—

change one or more configuration parameters

save new configuration file.

CAUTION

Can damage the TIM connection beyond repair.

Disconnect the TIM cable prior to opening or closing

the thermostat cover.

NOTE: The configuration tool verifies that the subbase

supports the existing arrangement.

Equipment Damage Hazard

CONFIGURATION PROCEDURE

Enter the T7350 PDA application. (See Fig. 27.)

If disconnected, the only usable functions are:

a. New Config:

Setting Clock

It is best to set the clock before downloading anything else to

the thermostat. Connect to the thermostat and set the clock.

See Fig. 26.

(

1) Enter a name for the configuration.

2) Tap New Config.

3) Proceed to Select Existing Config(uration)

section.

b. Select Existing Config: See below.

NOTES:

—

When setting the clock the first time, the PDA

displays an incorrect T7350 Clock time, day, and

date.

Day-of-Week mode forces the T7350 to ignore hol-

idays.

Fig. 27. PDA configuration tool main menu.

Select Existing Config(uration)

This function is used to select a programmed configuration

when setting up/programming a T7350. This can be useful

when you use any given configuration more than once.

Fig. 26. Set Clock menu.

NOTES:

PDA Programming

—

You can modify details of a given configuration

prior to downloading it into any particular T7350.

The PDA tool will notify you when a selected

configuration requires more stages/features than

the T7350 into which you are downloading it.

Configuration screens will vary depending on the

T7350 model selected.

The PDA Configuration Tool can perform a variety of tasks:

•

Configure the thermostat.

Calibrate the thermostat.

Perform diagnostics.

—

NOTE: To install the configuration tool on a second PDA:

Power up both PDAs.

Execute the following command sequence from

the source PDA: Menu, Beam, T7350, Beam.

To configure a T7350:

From the opening screen, tap Select Existing Config.

See Fig. 28.)

2. Select the desired configuration.

(

Configuration

Whether the configuration is performed offline or while

connected, the procedure is the same.

63-2605—06

T7350 Commercial Programmable Thermostat

Fig. 28. Select Existing Config.

Fig. 30. Inputs screen.

This brings up the Summary screen. From here, you can

make changes using the:

Make changes and tap “Next”.

a. Novice navigation screens (that appear), or

b. Advanced navigation screens, using the hidden

menus. (These are designed for expert users.)

NOTE: Novice navigation to the Dehumidification

screen is controlled based on the T7350 model

and configured room humidity sensor status.

So, step 9 and Fig. 31 may not apply.

(

1) Access to the Advanced Navigation mode is

obtained using one of the following methods:

(a)Tap the lower left “Menu” silk screen icon.

b)Tap the Title Tab of any screen.

The Dehumidification screen facilitates changes to:

a. Room humidity high limit.

(

RESULT: The Config Tool replaces the existing Screen

Title Tab with the Advanced Navigation menu

displayed across the top of the screen.

Tap “SaveAs” to save the changes under a new name.

The Summary screen facilitates changes to:

a. Description.

b. Dehumidification options.

b. Model.

c. Control (Standard or Heat Pump).

Fig. 31. Dehumidification screen.

0. Make changes and tap “Next” to proceed to the Cooling

Config(uration) screen.

1. The Cooling Config screen facilitates changes to:

a. Number of Stages.

Fig. 29. Configuration Summary screen.

b. Cooling Response.

c. OAT Lockout and DAT Low Limit Setpoints (for some

models).

Make changes and tap “Next” to proceed to the Inputs

screen.

The Inputs screen facilitates changes to:

a. RoomTemp(erature).

b. Room Rel(ative) Humidity.

c. Occ(upancy) Sensor.

d. Discharge Air Temp(erature).

e. Outdoor Air Temp(erature).

NOTE: Some selections only appear for the models

that support them.

T7350D

T7350M

Fig. 32. Cooling Config(uration) screen.

63-2605—06

T7350 Commercial Programmable Thermostat

2. Make changes and tap “Next” to proceed to the Heating

Config(uration) screen.

13. The Heating Config(uration) screen facilitates changes

to:

a. Number of Stages.

b. Heating Response.

c. OAT Lockout and DAT High Limit Setpoints (for some

models).

Fig. 35. Fan screen.

8. Make changes and tap “Next” to proceed to the Weekly

Schedule screen.

NOTE: The only schedule days/times displayed are

those in the program. It is possible to have as

many as 4 event times per day for each day

T7350D

T7350M

(

including holiday) programmed into each set.

Fig. 33. Heating Config(uration) screen.

9. The Weekly Schedule screen facilitates changes to the

program schedule:

4. Make changes and tap “Next” to proceed to the Outputs

screen.

a. Tap Modify. (See Fig. 37.)

b. Select a day to modify.

5. The Outputs screen facilitates changes to output type(s).

c. Make changes to:

(1) Mode (see Fig. 38).

NOTE: When configured with an extra stage of heat or

cool (using the auxiliary stage) the Outputs

screen shows nothing but this indication.

NOTE: To remove a given event, change Mode

to “None”.

(

2) Time (see Fig. 39).

d. Repeat step c for all events until changes are

complete for the given day.

NOTE: To copy a day schedule, check the appropriate

boxes, and click CopyDayTo. (See Fig. 40.)

e. Tap OK.

f. Type in a name for the new schedule.

g. Tap SaveAs.

Fig. 34. Outputs screen.

6. Make changes and tap “Next” to proceed to the Fan

screen.

17. The Fan screen facilitates changes to:

a. Fan Switch (On or Auto).

b. Fan Operation (Conventional or Electric Heat).

c. Heat and cool extended operation.

Fig. 36. Weekly Schedule screen.

63-2605—06

T7350 Commercial Programmable Thermostat

0. Tap “Next” to proceed to the SetPoints screen.

1. The SetPoints screen facilitates changes to the:

a. Default setpoints.

b. Occupied Setpoint stops.

c. Temporary Override duration.

Fig. 37. Weekly Schedule modification screen.

Fig. 41. SetPoints screen.

2. Make changes and tap “Next” to return to the Summary

screen.

3. Tap “Save” to save changes under the existing name.

4. Tap “DownLd” to download changes to a connected

T7350.

25. Tap “CnfgID” to have the device calculate configuration

number(s).

26. The configuration numbers represent the C numbers

(

C1.C2.C3.C4.C5.C6.C7.C8) that can be input using the

T7350 keypad.

Fig. 38. Weekly Schedule Mode modification.

Fig. 39. Weekly Schedule Time modification.

Fig. 40. Weekly Schedule Mode CopyDayTo.

NOTE: The configuration numbers determine all but

the schedule and setpoints.

7. To return to the Home Screen, tap the Menu icon (lower

left hand corner silk screen) and tap Set / Home.

Fig. 42. Summary screen with configuration numbers.

Deleting Configurations

Make certain you are in a configuration other than the

one you plan to delete.

Tap the Summary tab in the upper left corner.

Select File / Delete.

Select the configuration to delete.

Tap DELETE.

A prompt appears allowing you to cancel the deletion.

To delete more configurations, return to step 4.

When finished with deletions, tap DONE.

63-2605—06

T7350 Commercial Programmable Thermostat

Tap Modify. (See Fig. 44.)

Weekly (Wkly) Schedule

This function is used to upload/modify/download schedule sets

for programming a T7350. This can be useful if you want to

change only schedule settings.

NOTE: The schedule can also be modified from within a

given configuration.

Holidays

This function is used to upload/modify/download holiday sets

for programming a T7350. This can be useful if you want to

change only holiday settings. It is especially useful if you use

any group of holidays more than once.

NOTE: The holidays can be modified from within a given con-

figuration.

Fig. 44. Holiday modification screen.

To create a new holiday group:

3. Select a holiday slot to modify or create.

4. Make changes to:

From the main menu, tap Holidays. (See Fig. 43.)

a. Holiday title.

NOTE: The only holidays displayed are those

contained in a program set. It is possible to

have as many as 10 holidays programmed into

each set.

b. Start Month.

NOTE: To remove a given holiday, change the Start

Month to “None” and tap “OK”. The title will

remain, but the holiday will not operate.

c. Start Day.

d. Duration.

NOTE: To remove all evidence of a given holiday,

change Title to “Hol ##”, Start Month and Start

Day to “None”, Duration to “0” and tap “OK”.

e. Spin Speed.

NOTE: Spin Speed determines the increment change

(

1X or 10X) for Start Day and Duration. The

spin speed setting is local for each screen.

Repeat steps 2 through 4 until changes are complete for

the given holiday set.

Fig. 43. Holiday screen.

Type in a name for the new holiday set.

Tap SaveAs.

Repeat steps 2 through 8 for all desired holiday sets.

To return to the main menu, tap the Holiday screen OK.

Calibration

Connect to a thermostat and calibrate the temperature display.

Online Diagnostics

Connect to a thermostat and, using the “Monitor Data” function,

read diagnostic information including:

•

Thermostat firmware version.

Thermostat hardware version.

Subbase hardware version.

Run time error messages.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 20. Thermostat Setup Options Through PDA.

PDA

Configuration Option

Factory Default^aTool CnfgID

Description

Fan Operation

Conventional

Conventional: Applications where equipment controls fan operation in heat mode.

Electric Heat: Applications where thermostat controls fan operation in heat mode.

The thermostat always controls the fan in cool mode.

Extended Heat Fan

Extended Cool Fan

Extend 90 sec

No Extended Op: No extended fan operation after call for heat ends.

Extend 90 sec: Fan operation extended 90 seconds after call for heat ends.

No Extended Op

No Extended Op: No extended fan operation after call for cool ends.

Extend 40 sec: Fan operation extended 40 seconds after call for cool ends.

Control

Standard

ActvClg

Standard: Conventional equipment; Heat Pmp: Heat Pump.

HeatPump RevValve

ActvClg: Energize O/B on call for cool.

ActvHtg: Energize O/B on call for heat.

Heat Output Stages

Stages of heat (conventional HVAC equipment). Set to zero for heat pump.

Three heat stages not available if configured for four stages of cooling.

AuxStg

Auxiliary Heat Stages (for heat pump applications): Number of stages (0,1, or 2).

3 cph: Standard response for heating system;

Heating Response

6 cph

cph: Medium response for heating system; 9 cph: Fast response for heating system;

0 cph: Super fast response for heating systems.

Heat Lockout

None

70° F

None: No outdoor air temperature (OAT) lockout for heat.

Enable: Heat locked out when OAT is greater than Heat Lockout Setpoint.

Heat Lockout Setpoint

Heat is locked out when OAT is greater than this setpoint.

Range: -40 to 120° F

Cool Output stages

Cooling Response

Stages of cool (conventional), or number of compressor stages (heat pump).

3 cph: Standard response for cooling system.

3 cph

cph: Fast response for cooling system.

Cooling response applies to compressors in heat pump applications.

Cooling Lockout

None

35° F

None: No OAT lockout for cool.

Enable: Cool locked out when OAT is less than Cool Lockout Setpoint.

Cool Lockout Setpoint

Cooling is locked out if the outdoor temperature is less than this setpoint.

Range: -40 to 120° F

Cooling Valve

Heating Valve

Direct

Htg

Modulating Cooling Valve Action: Direct or Reverse. (T7350M only.)

Modulating Heating Valve Action: Direct or Reverse. (T7350M only.)

Anticipator Authority

Application

Htg: Authority applies to heating only.

Htg&Clg: Authority applies to both heating and cooling. (Found in Loop Tuning.)

Anticipator Authority

Cooling TR

4° F

Thermostat Anticipator Authority. Range: 2 to 15° F.

Cooling Throttling Range. Range: 1 to 30° F. (Found in Loop Tuning.)

Cooling Integral Time. Options: 0, 100 to 5000 sec. (0: disable.)

Cooling Derivative Time. Options: 0, 10 to 3000 sec. (0: disable.)

Heating Throttling Range. Range: 1 to 30° F. (Found in Loop Tuning.)

Heating Integral Time. Options: 0, 100 to 5000 sec. (0: disable.)

Heating Derivative Time. Options: 0, 10 to 3000 sec. (0: disable.)

Temperature Display: °F or °C.

Cooling IT

Cooling DT

0 sec

Heating TR

Heating IT

Heating DT

Display Units

Clock Format

0 sec

°F

AM/PM

No Change

AM/PM: 12-hour clock format. 24 hr: 24-hour clock format.

Temperature Display

Calibration

No Change: Displayed temperature is actual room temperature.

Can adjust to display up to 3° F (1.7° C) higher or down to 4° F (2.2° C) lower than room

temperature.

TempOverride

Temporary Occupied Override duration. Range: 1 to 8 hours.

The Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21.

2:00 Noon is the default start point when time is unknown.

Only Available if user selected one or more of following: Dehumidification Reset, Dehumidification Minimum On, or Dehumidification Reheat.

Config ID cannot handle Standby setpoints. Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship. The T7350

algorithm never allows the effective setpoint outside Not Occupied setpoints.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 20. Thermostat Setup Options Through PDA. (Continued)

PDA

Configuration Option

Factory Default^aTool CnfgID

Description

RoomTemp

Local

Room Temperature Input

Local: Use internal sensor; TR21/TR24: Use remote sensor.

TR22/TR23: Use remote sensor with setpoint adjustment capability (requires PDA or

TStatSpec software and USB-TIM/U cable).

T7771: Use remote sensor with setpoint adjustment capability (requires PDA or TStatSpec

software and USB-TIM/U cable); changes T7771 LED and bypass button operation: LED

on means either occupied or bypass, pushing bypass can cancel bypass.

RoomRelHumidity

Room Relative Humidity Input.

None: No humidity sensor; Local: Use internal humidity sensor;

Remote: Use remote humidity sensor (0-10 Vdc signal).

Discharge AirTemp

Outdoor AirTemp

None

Discharge Air Temperature Input.

None: No discharge air sensor; or Remote: Remote discharge air sensor.

Outdoor Air Temperature Input.

None: No outdoor air sensor; or Remote: Remote outdoor air sensor.

OccSensor

AuxDO

None: No occupancy sensor; or Remote: Remote occupancy sensor.

Time of Day

Auxiliary Contact Operation:

Time of Day, Economizer, Dehumid Hot Gas BP, or Simple Dehumid.

Auxiliary contact not available if heat pump selected with T7350A.

Key Pad (Lockout)

Enable All

Keypad lockout enable/disable through special keypad sequence.

Enable All (0): No lockout.

SetPts & Ovrrd (1): Lockout all keys except: Temporary (Not) Occupied,ꢀ,ꢁand

Info Only (2): Lockout all keys except

The special keypress features are never locked out.

Minimum heating recovery ramp rate. Range: 0 to 20° F/hr.

Maximum heating recovery ramp rate. Range: 0 to 20° F/hr.

Minimum cooling recovery ramp rate. Range: 0 to 20° F/hr.

Maximum heating recovery ramp rate. Range: 0 to 20° F/hr.

Minimum heating outdoor air temperature. Range: -20 to 100° F.

Maximum heating outdoor air temperature. Range: -20 to 100° F.

Minimum cooling outdoor air temperature. Range: -20 to 100° F.

Maximum cooling outdoor air temperature. Range: -20 to 100° F.

Demand limit control set point bump. Range: 0 to 10° F.

Recovery Heat RampMin

5° F/hr

Recovery Heat RampMax 8° F/hr

Recovery Cool RampMin 3° F/hr

Recovery Cool RampMax 6° F/hr

Recovery Heat OAT@Min 0° F

Recovery Heat OAT@Max 40° F

Recovery Cool OAT@Min 90° F

Recovery Cool OAT@Max 70° F

Demand Limit Control Bump 3° F

Power Failure Seq Start

0 (x10 sec)

Delays start of equipment (fan, heat, cool) after power restored to thermostat.

Range: 0 to 150 seconds (in 10-second increments).

Enable DAT High Limit

Enable DAT Low Limit

High Limit DAT Setpoint

Low Limit DAT Setpoint

Dehumidification Min On

None

110° F

45° F

None

None: No Discharge Air Temperature (DAT) high limit; Enable: Use DAT High Limit.

None: No Discharge Air Temperature (DAT) low limit; Enable: Use DAT Low Limit.

Discharge Air Temperature High Limit Setpoint. Range: 65 to 140° F.

Discharge Air Temperature Low Limit Setpoint. Range: 35 to 60° F.

None: No Minimum On Time dehumidification;

Enable: Dehumidification using Minimum On Time.

Dehumidification Min On

Time

Minimum on time used with “Dehumidify Minimum On”. Range: 5 to 15 minutes.

Dehumidification Reset

Temp

None

2° F

None

None: No Reset dehumidification; Enable: Dehumidification using Reset.

Dehumidification Reset

Temp Setpt

Amount of reset used with “Dehumidify Reset”. Range: 1 to 5° F.

Must be smaller than occupied zero energy band (ZEB) or standby ZEB.

Dehumidification Reheat

None: No Reheat dehumidification; Enable: Dehumidification using Reheat.

The Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21.

2:00 Noon is the default start point when time is unknown.

Only Available if user selected one or more of following: Dehumidification Reset, Dehumidification Minimum On, or Dehumidification Reheat.

Config ID cannot handle Standby setpoints. Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship. The T7350

algorithm never allows the effective setpoint outside Not Occupied setpoints.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 20. Thermostat Setup Options Through PDA. (Continued)

PDA

Configuration Option

Factory Default^aTool CnfgID

Description

Dehumidification High Limit. Range: 10 to 90%.

Dehumidification High Limit 65%

_Xc

Clock Year

1999

Range: 2000 to 2035.

Clock Month

Clock Day

1: January… 12: December.

Wed

Day of the Week: Sun, Mon, Tue, Wed, Thu, Fri, Sat

12:00 a.m.: Midnight (first minute of the day); 12:00 p.m.: Noon.

Clock Minutes

₁_:₁₅_p_._m_.b

Holiday Month

Holiday Day

Holiday Duration

Delays

Unprogrammed; January…December.

Unprogrammed; 1; 2…31; LASTDAYOFMONTH…LAST_SAT

Duration of given Holiday (in days). Range: 0 to 99 days.

0 days

On: Delays (on relays, sequential start, etc.) are active.

Off: Delays disabled (also called Test Mode).

System Switch

Fan Switch

Auto

System settings: Auto; Cool; Off; Heat; Emergency Heat (valid if Heat Pump)

Fan setting: On; Auto

Occupied Heat Setpt Stop 55° F

Occupied Cool Setpt Stop 85° F

Not Occupied Heat Setpoint 55° F

Occupied Minimum Heat Setpoint: Lowest the programmed occupied heating setpoint can

be adjusted. Range: 40 to 90° F; Value ≤ OccHt ≤ OccCl - 2° F.

Occupied Maximum Cool Setpoint: Highest the programmed occupied cooling setpoint can

be adjusted. Range: 45 to 99° F. Value ≥ OccCl ≥ OccHt + 2° F.

Not Occupied heating setpoint. Range: 40 to 90° F.

UnoccHt ≤ OccHt ≤ OccCl - 2° F; UnoccHt ≤ StdByHt ≤ StdByCl - 2° F

Standby Heat Setpoint

Occupied Heat Setpoint

Occupied Cool Setpoint

Standby Cool Setpoint

67° F

70° F

75° F

78° F

Standby heating setpoint. Range: 40 to 90° F.

Occupied heating setpoint. Range: 40 to 90° F.

Occupied cooling setpoint. Range: 45 to 99° F.

Standby cooling setpoint. Range: 45 to 99° F.

Not Occupied Cool Setpoint 85° F

Not Occupied cooling setpoint. Range: 45 to 99° F.

UnoccCl ≥ OccCl ≥ OccHt + 2° F; UnoccCl ≥ StdByCl ≥ StdByHt + 2° F.

Event 1 State

Event 2 State

Event 3 State

Event 4 State

Occupied

Day Schedule is a structure of 8 days of 4 events each day. Defaults listed are for Monday

through Friday. Saturday/Sunday/Holiday default to Unprogrammed (None / 12:00 a.m.).

All Events can be set for: Standby or None.

Only Events 1 and 3 can be set for Occupied.

Only Events 2 and 4 can be set for Not Occupied.

Not Occupied

None

Note: The Config ID cannot set an event to Standby, but it can change the time.

Event 1 Time

Event 2 Time

8:00 a.m.

10:00 p.m.

12:00 a.m

Scheduled time for event change.

2:00 p.m.: Noon

2:00 a.m.: Midnight

Event 3 Time

Event 4 Time

(midnight)

The Factory defaults listed here apply to all subbase models with the exceptions of the items listed in Table 21.

2:00 Noon is the default start point when time is unknown.

Only Available if user selected one or more of following: Dehumidification Reset, Dehumidification Minimum On, or Dehumidification Reheat.

Config ID cannot handle Standby setpoints. Keypad users cannot set Occupied setpoints that violate Not Occupied setpoint relationship. The T7350

algorithm never allows the effective setpoint outside Not Occupied setpoints.

63-2605—06

T7350 Commercial Programmable Thermostat

Table 21. Exceptions to Factory Defaults.

T7350D

T7350H1009

T7350M

T7350H1017

Configuration Option

Heat Output Stages

T7350A

T7350B

Cool Output Stages

Room Humidity Sensor

Heat Throttling Range

Cool Throttling Range

Heat Integral Time

None

Local

1650

Local

1250

3100

2500

Cool Integral Time

ZIRE and TUNGSTEN are trademarks of palmOne, Inc.

LonMark , LonTalk , Echelon and LonWorks^®are registered trademarks of Echelon Corporation.

Palm OS^®is a registered trademark of Palm Computing, Inc.

Palm^®is a registered trademark of PalmSource, Inc.

Automation and Control Solutions

Honeywell International Inc.

1985 Douglas Drive North

Golden Valley, MN 55422

Honeywell Limited-Honeywell Limitée

5 Dynamic Drive

U.S. Registered Trademark

Toronto, Ontario M1V 4Z9

customer.honeywell.com

2010 Honeywell International Inc.

3-2605—06 M.S. Rev. 10-10

Printed in U.S.A.