Bryant TSTATBBP250 LA Thermostat User Manual

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installation, start-up

and service instructions

TEMPSURE COMMERCIAL THERMOSTAT

(P/N TSTATBBP250-LA)

Cancels: New

II TSTAT-9

1/1/98

CONTENTS

GENERAL

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . 1

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

I. Select Thermostat Location . . . . . . . . . . . . . . . . . . 1

II. Install Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . 2

III. Set Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

IV. Heat Pump Conﬁguration . . . . . . . . . . . . . . . . . . . . 2

V. Conﬁgure Advanced Setup . . . . . . . . . . . . . . . . . . . 2

VI. Install Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 5

VII. Program Thermostat Schedules . . . . . . . . . . . . . . . 5

VIII. Calibrate Temperature Sensor . . . . . . . . . . . . . . . . 6

IX. Light Sensor Adjustment . . . . . . . . . . . . . . . . . . . . 6

X. Check Thermostat Operation . . . . . . . . . . . . . . . . . 6

XI. Final Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

The 7-day, commercial, programmable thermostats are wall-

mounted, low-voltage thermostats which maintain room tem-

perature by controlling the operation of an HVAC (heating,

cooling and ventilation) system. Separate heating and cool-

ing set points and auto-changeover capability allow occupied

and unoccupied programming for energy savings.

All thermostats allow up to 4 time/temperature settings to

be programmed per 24-hour period. Each thermostat stores

programs for 7 independent days. Batteries are not required.

During power interruption the internal NEVERLOST™

memory stores programmed schedules for an unlimited time

while the clock continues to run for at least 48 hours.

The thermostat can be conﬁgured to accept several different

equipment conﬁgurations, including heat pump operation.

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,8

I. Auto-Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

II. Light-Activated Operation . . . . . . . . . . . . . . . . . . . . 7

III. Two-Stage Operation . . . . . . . . . . . . . . . . . . . . . . . . 7

IV. Clock Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

V. Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

VI. Emergency Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

VII. Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

VIII. Holiday Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

IX. Remote Temperature Sensor . . . . . . . . . . . . . . . . . 8

X. Keypad Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

NOTE: The thermostat is not factory-conﬁgured for use in

heat pump applications. The advanced setup must be per-

formed to conﬁgure the thermostat for use with heat pump

units.

A light sensor is provided on the thermostat for light activa-

tion. When the sensor detects light (the space is occupied),

the thermostat will enter Occupied 1 mode. If the room is

dark, the thermostat will follow its programmed schedule.

INSTALLATION

I. SELECT THERMOSTAT LOCATION

The thermostat should be mounted:

• approximately 5 ft from the ﬂoor

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

IMPORTANT: Read entire instructions before starting the

installation.

•

close to or in a frequently used room, preferably on an in-

side partitioning wall

SAFETY CONSIDERATIONS

Read and follow manufacturer instructions carefully. Follow

all local electrical codes during installation. All wiring must

conform to local and national electrical codes. Improper wir-

ing or installation may damage thermostat.

• on a section of wall without pipes or ductwork

• where temperature operating limits are within 41 to 104 F

(5 to 40 C)

•

where humidity operating range is within 0 to 95% rela-

tive humidity, non-condensing

Recognize safety information. This is the safety alert symbol

When the safety alert symbol is present on equipment or

The thermostat should NOT be mounted:

in the instruction manual, be alert to the potential for per-

sonal injury.

•

close to a window, on an outside wall, or next to a door

leading to the outside

Understand the signal words DANGER, WARNING, and CAU-

TION. These words are used with the safety alert symbol.

DANGER identiﬁes the most serious hazards which will re-

sult in severe personal injury or death. WARNING signiﬁes

a hazard which could result in personal injury or death. CAU-

TION is used to identify unsafe practices which would result

in minor personal injury or property damage.

•

where exposed to direct light and heat from a lamp, the

sun, a ﬁreplace, or any other temperature-radiating object

which may cause a false reading

•

close to or in direct airﬂow from supply registers or return

air grilles

• in areas with poor air circulation (such as behind a door or

in an alcove)

II. INSTALL THERMOSTAT

. Secure mounting base to wall with 2 screws and an-

chors provided. Ensure all wires exit through hole in

mounting base.

WARNING: Before installing thermostat, turn off all

power to the unit. There may be more than one power

disconnect. Electrical shock can cause injury or death.

8. Adjust wire length and routing to allow proper closure

of the thermostat. Strip each wire at the end no more

than ⁄

-in. to prevent adjacent wires from shorting to-

. Turn off all power to unit.

gether. Match and connect wires to terminals on the

thermostat. See Fig. 2-4 and Table 1.

. If an existing thermostat is being replaced:

a. Remove existing thermostat from the wall.

CAUTION: Improper wiring or installation may cause

damage to the thermostat. Check to ensure wiring is

correct before proceeding with installation of unit.

b. Disconnect wires from existing thermostat. Do not

allow wires to fall back into the wall. As each wire

is disconnected, record wire color and terminal

connection.

9. Push excess wiring into wall. Seal hole in wall to pre-

vent drafts.

c. Discard or recycle old thermostat.

0. Re-attach thermostat cover to back plate by aligning

the top two prongs of the back plate in the vertical groove

of the top cover and then snapping the cover onto the

back plate.

NOTE: Mercury is a hazardous waste and must be disposed

of properly.

. Remove the thermostat cover from wall plate (mount-

ing base) to expose mounting holes. See Fig. 1. With

the thermostat facing forward, press the back plate on

the left hand side top corner to release the two prongs

holding on the cover. Pull off the cover when the prongs

have been disengaged.

1. Turn on power to unit. The thermostat will receive power

from the unit. The thermostat will be powered by 24 v,

nominal (18 to 30 vac). Terminals R (+ 24 v), W1/O/B

(ﬁrst stage heat or reversing valve), Y1 (ﬁrst stage cool-

ing), and G (fan relay) will always be connected. Some

applications will use C (common), Y2 (second stage cool-

ing), or W2 (second stage heating).

. Route thermostat wires through large hole in mount-

ing base. Remove outer sheath from wires for added

ﬂexibility. Standard solid or multi-conductor thermo-

stat wire should be used from the thermostat to the

unit. Size a n d len gt h con sid er a t ion s a r e a s fol-

low s: for a m a xim u m d ista n ce fr om u n it of 36 ft,

u se 22 AWG (Am er ican Wir e Gage) wir e; for a m axi-

m u m distan ce fr om u n it of 100 ft, u se 18 AWG wir e.

III. SET CLOCK

The Set Clock button allows the user to change the time and

day displayed on the thermostat. Press the Set Clock button.

The current time will blink on and off. Press the UP ARROW

and DOWN ARROW buttons until the correct time is shown.

Hold down the buttons to quickly move through the time dis-

play. Press and hold the Fan button while pressing the UP or

DOWN ARROW buttons to scroll through by hours. The AM

and PM annunciators will automatically change. To ensure

the schedules are properly followed, make sure that AM or

PM is correct for the time chosen. When the correct time is

shown, press the Mode button to modify the day of the week.

The current day will blink on and off. Press the UP ARROW

and DOWN ARROW buttons until the correct day is shown.

Press the Set Clock button again to exit the Set Time mode.

IV. HEAT PUMP CONFIGURATION

To conﬁgure the thermostat for heat pump operation, Ad-

vanced Setup Steps 3 (Heat Pump Operation) and 4 (Revers-

ing Valve Polarity) must be conﬁgured correctly. See the

Conﬁgure Advanced Setup section for information on conﬁg-

uring these options.

NOTE: Some large commercial rooftop heat pump units (542J )

must be conﬁgured with Advanced Setup Step 3 (Heat Pump

Operation) set to OFF. Refer to the base unit instructions for

more information.

Fig. 1 — Thermostat Mounting

V. CONFIGURE ADVANCED SETUP

To enter into the advanced setup screens of the thermostat,

press the Mode and Program buttons at the same time. The

Advanced Setup Step number is shown in the top right cor-

ner of the thermostat screen. Use the Mode button to ad-

vance through the steps. There are 17 Advanced Setup Steps.

See Table 2. Press the Program button at any time to exit the

Advanced Setup mode.

. Level mounting base against wall and mark wall through

the 2 mounting holes in base.

. Drill two ³⁄16-in. mounting holes in wall where marked.

WARNING: Be careful not to drill into wiring in wall.

Electrical shock could result.

NOTE: Advanced Setup Steps 1 and 2 are conﬁgured with

the Set Clock button, and are not accessed through the ad-

vanced setup screens.

—

2—

LEGEND

—

Second-Stage Heat

W1/O/B

—

First-Stage Heat or Reversing Valve

First-Stage Compressor

Fan

Second-Stage Compressor

Second Remote Sensor (Not Used)

+5 vdc for 2 Sensors

RS2

RS+5

RS1

W3/ECO

CK1

CK2

Third-Stage Heat or Economizer (Not Used)

Dry Contact

Remote Sensor

Ground for 2 Sensors

RS GND

Dry Contact Ground

24 vac Transformer

24 vac Transformer Common

Fig. 2 — Thermostat Wiring

THERMOSTAT

TYPICAL

UNIT

Table 1 — Thermostat Wiring Terminations

EXISTING

WIRE

W2 Y2 R W1 Y1 G

TERMINAL

CONNECTION

FUNCTION

DESIGNATION

G or F

Fan

4 VAC COMMON

Y1, Y, or C

Cooling

FAN RELAY

W1, W, or H

Heating

W1/O/B

COMPRESSOR RELAY

st STAGE HEAT CIRCUIT

Rh, R, M, Vr, or A

Power (24 v)

Common

O/B

Reversing Valve

Second Stage Cooling

Second Stage Heating

Remote Sensor (5 vdc)

Remote Sensor Signal

Remote Sensor Ground

Dry Contact Switch

Dry Contact Ground

W1/O/B†

Y2*

4 VAC RETURN

W2*

RS+5

RS1

nd STAGE HEAT CIRCUIT

RS G

CK1

CK2

RS GND

CK1

Fig. 3 — Typical Wiring (Single-Stage Cooling Units)

CK2

THERMOSTAT

TYPICAL

UNIT

*Terminals C, Y2, and W2 may not be used in all applications.

†Used on Heat Pump applications only.

W2 Y2 R W1 Y1 G

4 VAC COMMON

FAN RELAY

COMPRESSOR RELAY

st STAGE HEAT CIRCUIT

4 VAC RETURN

nd STAGE COMPRESSOR RELAY

nd STAGE HEAT CIRCUIT

Fig. 4 — Typical Wiring (Two-Stage Cooling Units)

—

3—

A. Heat Pump Conﬁguration (Steps 3 and 4)

I. Soft Start (Step 13)

To set the thermostat for heat pump operation, Advanced Setup

Step 3 must be conﬁgured to ON. Use the UP and DOWN

ARROW buttons to conﬁgure the step. The default is OFF.

Press the mode button to continue to Step 4. Step 4 is used to

set the reversing valve polarity for the heat pump. The vari-

able can be set to either ‘‘B’’or ‘‘O.’’ Set the reversing valve

polarity to the correct value depending on the application. The

default is ‘‘O.’’

The soft start is used when multiple units are used in an ap-

plication. The soft start staggers the start up times of the

units in the event of power loss and restart. Each unit should

be assigned a unit ID number. The 30-second delay time is

multiplied by the unit ID number to get the total soft start

delay time for each unit. For example, if the unit ID number

is 10, set the Soft Start function to 10, the start-up delay time

is 30 seconds x 10 = 300 seconds (5 minutes). The range is 0

to 99 (ID numbers). A value of 0 disables the function. The

default is 0 (ID number).

NOTE: Step 4 will appear only if Step 3 is set to ON. Step 5

will appear only if Step 3 is set to OFF.

J. Farenheit/Celsius Operation (Step 14)

B. Electric Heat Conﬁguration (Step 5)

The thermostat can be set to operate in Fahrenheit or Cel-

sius degrees. Set the variable to ‘‘F’’ for Fahrenheit opera-

tion. Set the variable to ‘‘C’’ for Celsius operation. The default

is ‘‘F.’’

Step 5 is used to conﬁgure the thermostat for electric heat.

The variable can be conﬁgured ON or OFF. The default is

OFF.

NOTE: Step 5 will appear only if Step 3 is set to OFF.

K. Security Level (Steps 15 to 17)

C. Deadband (Step 6)

The Security Level limits the actions that the user can per-

form at the thermostat. There are 4 security levels. When the

security level is set to ‘‘0,’’ no security will be in effect. When

the security level is set to ‘‘1,’’ the set point range is limited

by the settings of Steps 16 and 17. When the security level is

set to ‘‘2,’’ the set point range is limited by the settings of

Steps 16 and 17 and the Program On mode is always in ef-

fect. When the security level is set to ‘‘3,’’ the set point range

is limited by the settings of Steps 16 and 17, the Program On

mode is always in effect, and set point changes are prohib-

ited. The default is 0.

The deadband is the difference in temperature above the cool-

ing set point or below the heating set point that the thermo-

stat will wait before turning on the ﬁrst stage of heating or

cooling. For example, if the cooling set point is 82 F (28 C)

and the deadband is 2 degrees, the ﬁrst stage of cooling will

not be energized until the temperature reaches 84 F (30 C).

The range of values is 1 to 6 degrees. The default is 2 degrees.

D. Set Point Minimum Difference (Step 7)

The minimum difference between heating and cooling set points

can be user-conﬁgured. The range is from 0 to 6 degrees. The

default is 2 degrees. The minimum difference is enforced dur-

ing Autochangeover and Program On operation.

Security Maximum Heat Set Point (Step 16)

If the Security Level is not set to 0, the maximum heating

set point will be in effect. The user will not be allowed to set

the heating set point over the speciﬁed value. The range of

values is 35 to 99 F (1 to 37 C). The default is 80 F (27 C).

E. Cycles Per Hour Limit (Step 8)

The number of times that heating or cooling can be ener-

gized per hour can be conﬁgured. Set the variable to ‘‘d’’ for

no limit. Set the variable to ‘‘d1’’ to disable the 5-minute com-

pressor lockout. The variable can also be set from 2 to 6 cycles

per hour. The default is 6 cycles per hour.

Table 2 — Advanced Setup Conﬁguration

STEP

DESCRIPTION

RANGE

DEFAULT

2:00 AM -

Time of Day

12:00 AM

CAUTION: Damage to compressor could result if

11:59 PM

-minute compressor lockout is disabled or compressor

Sunday through

Saturday

Day of the Week

Heat Pump

Monday

Off

is allowed unlimited cycles. Do not set thermostat Ad-

vanced Setup Step 8 to ‘‘d’’ or ‘‘dl’’ unless speciﬁcally rec-

ommended for the application.

Off/On

Reversing Valve

Polarity

O/B

Electric Heat

Deadband

Off/On

Off

F. Pre-Occupancy Purge Timer (Step 9)

1 - 6 degrees

The pre-occupancy purge allows fresh outside air to be brought

into the space before the Occupied 1 time period. The timer

limits the amount of time that the purge can operate. The

timer can be set from 0 to 3 hours with 15-minute intervals.

The default is 0 hours (disabled).

Forced Minimum

0 - 6 degrees

Temperature Difference

Cycles per Hour

Fan Purge Timer

d, d1, 2 - 6

0:00 - 3:00

Off/On

0:00

Thermoglow™ Backlight

Reset Service

Filter Icon

—

G. Backlight Display (Step 10)

The display backlight can be set to ON (always on) or OFF

Service Filter

Run Time

0-1950 hrs

500 hrs

(turn off 8 seconds after usage). The default is ON.

Soft Start

0 - 99

F/C

H. Service Filter (Steps 11 and 12)

Temperature Units

Security Level

Step 11 allows the user to reset the Service Filter counter to

zero and remove the ‘‘SERVICE FILTER’’ icon (if displayed

on the thermostat screen). Press the FAN button while in Setup

Step 11 and the counter is reset to zero. Press the Mode but-

ton to adjust the number of hours the blower will run before

the ‘‘SERVICE FILTER’’ icon is displayed. The range is 0 to

0 - 3

Maximum Allowable

Heat Set Point

35 - 99 F

(1 to 37 C)

80 F (27 C)

65 F (18 C)

Minimum Allowable

Cooling Set Point

35 - 99 F

(1 to 37 C)

*Accessed and conﬁgured through the Set Clock button.

950 hours. Set the variable to 0 to disable this function. The

default is 500 hours.

—

4—

Security Minimum Cool Set Point (Step 17)

If the Security Level is not set to 0, the minimum cooling set

point will be in effect. The user will not be allowed to set the

cooling set point below the speciﬁed value. The range of val-

ues is 35 to 99 F (1 to 37 C). The default is 65 F (18 C).

VI. INSTALL ACCESSORIES

The following accessories can be used with this thermostat:

•

remote temperature sensor (TSTATBBPACC-WB)

outdoor temperature sensor (TSTATBBPACC-01)

Add-a-Wire™ accessory (TSTATBBPACC-AW)

Refer to the accessory installation instructions for each ac-

cessory for more information.

Fig. 5 — Setting Occupied 1 Set Points

. The heating set point for Occupied 1 will be displayed.

Use the UP ARROW and DOWN ARROW buttons to

raise or lower the heating set point until the desired

temperature is shown. The range of acceptable values

is 35 to 99 F (1 to 37 C). Press the Mode button to con-

tinue. See Fig. 5.

A. Remote Temperature Sensor

A remote temperature sensor may be provided to read the

temperature from a space. If a remote temperature sensor is

connected, the thermostat will ignore the reading of its in-

ternal sensor. When the thermostat is using a reading from a

remote sensor, the degree symbol above the temperature read-

ing will blink.

. The cooling set point for Unoccupied will be displayed.

Use the UP ARROW and DOWN ARROW buttons to

raise or lower the cooling set point until the desired

temperature is shown. The range of acceptable values

is 35 to 99 F (1 to 37 C) or ‘‘OF’’ (no unoccupied cool-

ing). Press the Mode button to continue.

VII. PROGRAM THERMOSTAT SCHEDULES

Before programming the thermostat, plan the thermostat daily

schedule. The schedule is divided into 7 days (Monday

through Sunday). Each day has from 2 to 4 time periods

. The heating set point for Unoccupied will be dis-

played. Use the UP ARROW and DOWN ARROW but-

tons to raise or lower the heating set point until the

desired temperature is shown. The range of acceptable

values is 35 to 99 F (1 to 37 C) or ‘‘OF’’ (no unoccupied

heating). Press the Mode button to continue.

(Occupied 1, Occupied 2, Occupied 3, Unoccupied) depending

on the conﬁguration of the thermostat. Each occupied time

period has a start time, stop time, heating set point, and cool-

ing set point. The unoccupied time period has a heating set

point and a cooling set point. The unoccupied time period is

active when ever an occupied time period is not active. Fill in

Table 3 as an aid to programming the daily schedules.

. The day of the week will be shown. Use the UP AR-

ROW and DOWN ARROW buttons to change the day

of the week until the desired starting day is shown.

Possible choices are M (Monday) through S (Sunday).

Press the Mode button when the desired day is shown.

NOTE: When the sensor detects light (the space is occupied),

the thermostat will enter Occupied 1 mode. If the room is

dark, the thermostat will follow its programmed schedule. The

Occupied 1 schedule should be turned OFF to keep the ther-

mostat from entering Occupied 1 while the room is unoccu-

pied. If the Occupied 1 schedule is turned ON, the thermo-

stat will enter Occupied 1 per the schedule regardless of light

activation. The Occupied 1 set points are used as the heating

and cooling set points during light activation. The Unoccu-

pied set points should be used as non-work hour set points

. The Start Time for Occupied 1 will be displayed. Use

the UP ARROW and DOWN ARROW buttons to raise

or lower the time until the desired Start Time is shown.

Press the Mode button to continue. See Fig. 6.

8. The Stop Time for Occupied 1 will be displayed. Use

the UP ARROW and DOWN ARROW buttons to raise

or lower the time until the desired Stop Time is shown.

Press the Mode button to continue.

(before 8:00 AM and after 5:00 PM) when using light activa-

tion. For times when the building is unoccupied during work

hours (Monday through Friday, 8:00 AM to 5:00 PM), the Oc-

cupied 2 schedule should be turned ON, and can be used for

moderate energy savings with set points of 80 F for cooling

and 65 F for heating.

. The On/Off icon will be displayed. Use the UP ARROW

to turn the Occupied 1 period ON for this day. Use the

DOWN ARROW to turn the Occupied 1 period OFF for

this day.

A. Programming Mode

10. Repeat Steps 2 through 9 to program the remaining

schedule for Occupied periods 2 and 3.

To program the daily schedules, perform the following

procedure:

. Enter programming mode by pressing the Program but-

ton. The Occupied 1 annunciator will appear on the ther-

mostat display. Use the UP ARROW and DOWN AR-

ROW buttons to set the maximum number of Occupied

periods for each day. The thermostat can be set to 1, 2,

or 3. After the number of Occupied periods has been

selected, press the Mode button. See Fig. 5.

. The cooling set point for Occupied 1 will be displayed.

Use the UP ARROW and DOWN ARROW buttons to

raise or lower the cooling set point until the desired

temperature is shown. The range of acceptable values

is 35 to 99 F (1 to 37 C). Press the Mode button to con-

tinue. See Fig. 5.

Fig. 6 — Start Time Display

—

5—

1. The Copy command can be used to copy the previous

day’s schedule if the schedules are the same. The copy

command becomes available after all the occupied pe-

riods are programmed in a day. Use the UP ARROW to

change the copy command to YES. Use the DOWN AR-

ROW to change the copy command to NO. Press the

Mode button when the choice has been made. See

Fig. 7.

3. Use an accurate thermometer to measure room tem-

perature. Press the UP or DOWN ARROW buttons un-

til the ﬂashing number equals room temperature.

. Press the Mode button to return to normal operation.

IX. LIGHT SENSOR ADJUSTMENT

The light sensor is used for light-activated operation. The sen-

sor can be adjusted for a variable degree of sensitivity. The

sensitivity adjustment screw is located on the inner cover of

the thermostat, near the DOWN ARROW button. Turning the

screw clockwise increases the sensitivity of the sensor to light.

Turning the screw counterclockwise decreases the sensitivity

of the sensor to light.

If NO was selected, the schedule will automatically

change to the next day and the user must enter the oc-

cupied and unoccupied schedules for that day.

NOTE: Occupied 1 schedule heating and cooling set points

are the same for each day. Occupied 2 and 3 set points may

be set to different values for each day of the week.

To check for correct sensitivity, place the thermostat in Pro-

gram On mode. The thermostat should be in Occupied 1 when

the lights are on. If the sensor does not enter Occupied 1 while

the lights are on, turn the screw clockwise until the Occu-

pied 1 icon appears on the display. The thermostat should

enter Unoccupied mode when the lights are off. If the sensor

does not enter Unoccupied when the lights are turned off, turn

the screw counterclockwise until the Unoccupied icon ap-

pears on the display.

If YES was selected, the schedule will be copied to the

next day. The schedule copy may be repeated until Sun-

day is reached. The Sunday schedule cannot be copied

to Monday.

2. After all the times and set points for each day have

been entered, press the Program button to exit pro-

gramming mode.

IMPORTANT: An external device should not be used with the

dry contact switch with light activated operation. The light

sensor is wired to the dry contact switch. Another device will

cause conﬂicting signals to the thermostat. The RED wire of

the sensor is wired to CK1. The BLACK wire of the sensor is

wired to CK2.

X. CHECK THERMOSTAT OPERATION

To check thermostat operation, perform the following

procedure:

Fig. 7 — Copy Command Display

NOTE: The thermostat will continue to follow the schedule

until a new one is entered.

. Press the Mode button repeatedly until the Heat icon

appears on the display. The thermostat is now in Heat-

ing mode.

If only one occupied schedule is selected, the Occupied 2 and

schedules are skipped. If the start time is set later in the

. Press the Fan button. The Fan Auto icon will appear on

the display screen. Press the UP ARROW button until

the heating set point is 10 F (6 C) higher than the cur-

rent room temperature. Heating and fan should be

energized.

day than the stop time, the program will run from midnight

of that day to the stop time and then from the start time to

midnight. If the same start and stop times are programmed

for an occupancy schedule, the thermostat will be in Occu-

pied mode for 24 hours. If one occupied period starts or stops

within another occupied period, the lower numbered sched-

ule has priority. For example, if schedule Occupied 3 is run-

ning for 24 hours and Occupied 2 schedule comes on from 1

to 3 PM, the set points from Occupied 2 are in effect from 1 to

. Press the Mode button repeatedly until the Cool icon ap-

pears on the display. The thermostat is now in Cooling

mode.

4. Press the DOWN ARROW button until the cooling set

point is 10 F lower than the current room temperature.

Cooling and fan should be energized.

PM.

B. Overriding the Schedule

. Press the Mode button repeatedly until the Off icon ap-

pears. Press the Fan button until the display reads Fan

On. The fan should energize.

The schedule can be overridden by pressing the UP or DOWN

ARROW buttons to change the desired temperature. The ther-

mostat will use the new set point until the next scheduled

time period starts.

. If heating, cooling, or fan operation do not energize, check

wiring and consult Table 4.

VII. CALIBRATE TEMPERATURE SENSOR

XI. FINAL CHECKLIST

Every thermostat is factory calibrated. Under normal circum-

stances there will never be a need to re-calibrate the ther-

mostat. If re-calibration must be done, perform the following

procedure:

. Put away tools and instruments. Clean up debris and

packaging.

2. Review Owner ’s Guide with occupant or owner.

3. Leave the manuals with owner.

. Hold down the Mode and Fan buttons for 5 seconds. All

of the icons on the display screen will appear. Release

the buttons. Press the UP and DOWN ARROW buttons

simultaneously.

. Press the UP and DOWN ARROW buttons simulta-

neously again. The current temperature will be

displayed.

—

6—

Table 3 — Daily Schedule Planner

SCHEDULE

Occupied 2

DAY

OF THE

WEEK

Occupied 1

Occupied 3

Unoccupied

Start / Stop / Heat / Cool

Heat / Cool

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

NOTE: The cooling temperature set point must be higher than the heating temperature set point. (The temperature difference may be changed in the

advanced setup conﬁguration.)

OPERATION

The fan will be off during unoccupied schedule except during

heating or cooling operation.

The Mode button selects the operating mode of the thermo-

stat. If OFF is selected, the thermostat will not enter Heat-

ing or Cooling mode. If HEAT is selected, the thermostat will

only enter Heating mode (if the room temperature is below

the heating set point). If COOL is selected, the thermostat

will only enter Cooling mode (if the room temperature is above

the cooling set point). If AUTO is selected, the thermostat will

enter Heating or Cooling mode based on the room tempera-

ture and the heating and cooling set points. If PROGRAM

ON is selected, the stored schedule is enabled and the ther-

mostat will follow the Occupied and Unoccupied schedules

stored in its memory.

If Fan On is not selected, the fan will only operate during

heating or cooling operation.

VI. EMERGENCY HEAT

Emergency heat is available for heat pump applications. To

turn on emergency heat, press and hold the Fan button. While

holding the Fan button, press the UP button for 2 seconds.

An ‘‘EH’’ will be displayed. During emergency heat, the fan

will operate and the second stage of heat will be energized

(locking out the ﬁrst stage compressor). To exit emergency

heat, press and hold the Fan button. While holding the Fan

button, press the UP button for 2 seconds. During emergency

heat, only OFF and HEAT modes are available.

I. AUTO-CHANGEOVER

When the thermostat mode is set to AUTO, the thermostat

will provide automatic changeover from Heating to Cooling

mode and Cooling to Heating mode when required. The ther-

mostat will automatically switch to maintain the desired tem-

perature setting. The thermostat does not need to be manu-

ally changed from heating to cooling or cooling to heating

operation.

VII. ELECTRIC HEAT

When the Electric Heat option in the advanced setup is set

to ON (conﬁgured by installer), the thermostat will turn on

the fan immediately any time there is a heat demand. This

feature should only be used on electric heating applications.

Do not use with gas heat.

II. LIGHT-ACTIVATED OPERATION

VIII. HOLIDAY MODE

A light sensor is provided on the thermostat for light activa-

tion. The thermostat must be in Program On mode for light

activation to be initiated. When the sensor detects light (the

space is occupied), the thermostat will enter Occupied 1 mode

and heat or cool according to the Occupied 1 set points. If

the room is dark, the thermostat will follow its programmed

schedule.

When the thermostat is in Holiday mode, the thermostat will

operate under Unoccupied set points. To conﬁgure and acti-

vate the Holiday mode, press the Holiday button. The ‘‘HOL’’

icon will be displayed along with the remaining days of Holi-

day mode operation. Press the UP or DOWN ARROWS to se-

lect the number of days that the holiday schedule will be in

effect. A value of 0 disables Holiday mode. The duration can

be set from 1 to 99 days. The thermostat will enter Holiday

mode on midnight of the next day after the mode has been

activated. Holiday mode will remain in effect until midnight

of the last conﬁgured day.

NOTE: Light activation does not work in Holiday mode.

III. TWO-STAGE OPERATION

The second stage of heat or cool is turned on when the ﬁrst

stage has been on for a minimum of 2 minutes and the tem-

perature differential from the set point is equal to or greater

than the set point plus the deadband plus 2 degrees.

If the Holiday mode is in effect, the number of days remain-

ing will blink on and off and the ‘‘Unoccupied’’ icon will be

displayed. The Override button will be active during Holiday

mode. The Dry Contact Switch is ignored.

IV. CLOCK BACKUP

To turn off the Holiday mode before the remaining conﬁg-

ured days have passed, press the Holiday button to enter into

the Conﬁguration mode. Press the DOWN ARROW to set the

number of days to zero. Holiday mode will be

disabled.

In the event of a power loss, the thermostat will keep time

for a minimum of 48 hours without external power or

batteries.

V. FAN OPERATION

If Fan On is selected, the fan will run continuously during

occupied schedule (except when Mode is switched to OFF).

—

7—

IX. REMOTE TEMPERATURE SENSOR

keypad, press and hold the Mode button. While holding

down the Mode button, press the UP and DOWN ARROW

buttons simultaneously. The ‘‘Locked’’ icon will appear on

the display.

A remote temperature sensor is available to read the tem-

perature from a space. If a remote temperature sensor is

connected, the thermostat will ignore the reading of its in-

ternal sensor. When the thermostat is using a reading from

a remote sensor, the degree symbol above the tempera-

ture reading will blink.

The thermostat is unlocked by performing the same pro-

cedure. Press and hold the Mode button. While holding down

the Mode button, press the UP and DOWN ARROW but-

tons simultaneously. The ‘‘Locked’’ icon will be removed from

the display.

X. KEYPAD LOCK

To prevent unauthorized use of the thermostat, the front

panel buttons can be disabled. To disable or lock the

TROUBLESHOOTING

For thermostat troubleshooting see Table 4 below.

Table 4 — Thermostat Troubleshooting

PROBLEM

Display on thermostat not illuminated.

SOLUTION

Check for 24 vac at the R terminal connection. Terminal R must be

connected for proper thermostat operation.

‘‘Service Filter’’ is displayed on thermostat.

After the conﬁgured number of blower operating hours, the Service

Filter message will be displayed. This reminds the owner to re-

place the ﬁlter. Reset the Service Filter feature to reset the blower

operation timer to 0 hours.

Cooling will not energize.

Heating will not energize.

Select COOL mode. Decrease cooling set point to 10 degrees be-

low room temperature. Check for 24 vac at Y1 terminal. If present,

thermostat is operating correctly and problem is with wiring or equip-

ment. If 24 vac is not present, replace the thermostat. Check for

Compressor Cycle per Hour Limit. Cooling may be locked out.

Select HEAT mode. Increase heating set point to 10 degrees above

room temperature. Check for 24 vac at W1/O/B terminal. If present,

thermostat is operating correctly and problem is with wiring or equip-

ment. If 24 vac is not present, replace the thermostat.

When using 4 wires (R,G,W,Y), the cooling equip-

ment tries repeatedly to turn on, but cannot. At

times the display dims or disappears.

There is not enough power available. Connect a 270 ohm, 10 watt

power resistor at the air-conditioning equipment between terminals

W and C (non-heat pump applications only).

When using 4 wires (R,G,W,Y), the heating equip-

ment tries repeatedly to turn on, but cannot. At

times the display dims or disappears.

There is not enough power available. Connect a 270 ohm, 10 watt

power resistor at the air-conditioning equipment between terminals

Y and C (non-heat pump applications only).

When controlling a heat pump, heat comes on

during cooling cycle.

Conﬁgure thermostat for heat pump operation (Table 2, Step 3).

When calling for cooling, both heating and cool-

ing are energized.

The thermostat is conﬁgured for a heat pump. Conﬁgure the ther-

mostat for non-heat pump operation (Table 2, Step 3).

When controlling a commercial heat pump unit,

unit runs in reverse or heating is always on.

Commercial heat pumps require that Heat Pump Option on ther-

mostat is turned OFF.

Printed in U.S.A.

CATALOG NO. 809-684

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