Bryant T6 NHP Thermostat User Manual

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T6−PAC, T6−PHP,  
T6−NAC, T6−NHP  
PREFERREDt SERIES  
AC / HP THERMOSTAT  
Installation Instructions  
A07045  
A07044  
Programmable Control  
Non-Programmable Control  
Designed and Assembled in the U.S.A.  
NOTE: Read the entire instruction manual before starting the installation.  
US patents: US7287709 B2, US20080147242 A1, USD582800 SI, US20060165149 A1, US6956463 B2.  
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TABLE OF CONTENTS  
PAGE  
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
INSTALLATION CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
SYSTEM START−UP AND CHECKOUT . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
OPERATIONAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41  
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45  
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49  
THERMOSTAT CONFIGURATION RECORD . . . . . . . . . . . . . . . . . . . . . . 58  
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 wiring or installation may damage AC/HP Control.  
Recognize safety information. This is the safety−alert symbol  
. When you see  
this symbol on the equipment and in the instruction manual, be alert to the  
potential for personal injury.  
Understand the signal words DANGER, WARNING, and CAUTION. These  
words are used with the safety−alert symbol. DANGER identifies the most  
serious hazards which will result in severe personal injury or death. WARNING  
signifies a hazard which could result in personal injury or death. CAUTION is  
used to identify unsafe practices which may result in minor personal injury or  
product and property damage. NOTE is used to highlight suggestions which will  
result in enhanced installation, reliability, or operation.  
1
INTRODUCTION  
Bryant’s 7−day, 5/2−day, 1−day programmable and non−programmable  
Preferredꢀ Series Thermostat Control is a wall−mounted, low−voltage  
temperature control in either a single unit or a two−piece unit. In two−piece  
configuration, the relays are located near the equipment and a two−wire  
connection is used between the Display Module and the Equipment Control  
Module. Single−piece installation requires more wiring and results in a higher  
profile. The Preferred Series Thermostat has no need for batteries to store  
user−configured settings in memory. During power loss its internal memory  
saves settings for unlimited time, and the clock continues to run for at least 24  
hours. An extension of Bryant’s proven line of thermostats; it provides separate  
setpoints for heating and cooling.  
In the control’s programmable configuration, different heating and cooling  
setpoints and times are programmable for 4 periods per day or 2 periods per day.  
Programming can be done for 7 days per week, 5/2 days per week, or 1 day. The  
programmable Thermostat Control can also be user configured as a  
non−programmableThermostat Control.  
The non−programmable Thermostat Control features Touch ’N’ Goꢀ settings  
for quick and easy temperature change without complicated programming  
schedules. And, its Touch ’N’ Go technology enables the user to switch between  
three different user−configurable settings through intuitive buttons located just  
below the display.  
2
INSTALLATION CONSIDERATIONS  
Power  
This control is powered by 24VAC only. It requires 24VAC (Rh and/or Rc and C  
terminals) of the low−voltage transformer to be connected to it for proper  
operation. It will not operate without these 2 connections. Rh and Rc are  
connected via PCB breakout jumper. See Fig. 1. For applications using two  
2
4VAC transformers, one in the indoor unit and one in the outdoor unit, connect  
the common from each to the C terminal. Connect R from the indoor unit to the  
Rh terminal. Connect R from the outdoor unit to the Rc terminal. Then, break  
jumper on the circuit board. The W signal is taken from the Rh power and the G  
signal is taken from the Rc power. If thermostat has been installed in a  
two−transformer application that is later changed to a single−transformer  
installation, installer must install a field supplied jumper between Rc and Rh.  
Depending on the installation, up to 14 wires may be required. Installation as  
two−piece unit is recommended. Only 2 wires are required for connection  
between Display Module and Equipment Control Module. These two wires (V+  
and Vg) do not provide ordinary 24VAC. They carry a combination of power  
and communications data that is unique to these products.  
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A07052  
Fig. 1 − PCB Breakout Jumper  
Models  
There are programmable and non−programmable models for all applications.  
They can be configured for AC or HP installations, allowing it to be used in  
place of all Bryant thermostats. Programmable thermostats may be configured as  
non−programmable if user desires.  
Outdoor Temperature Sensor  
The outdoor air temperature sensor is not included with the AC/HP Control. It is  
available as an accessory, part number TSTATBBSEN01−B. Optimum  
performance is obtained when an outdoor temperature sensor is used with the  
AC/HP Control. Plan installation so that 2 wires can be run from Equipment  
Control Module to an outdoor location, preferably on the north side of the house  
or refer to Installation Instructions included with the outdoor temperature sensor  
for simplified connection. Sensor can be mounted to outdoor unit and existing  
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dedicated sensor wires may be used for its connection. Details are provided in  
sensor instructions.  
Remote Indoor Temperature Sensor  
A remote temperature sensor may be used with the programmable heat pump  
and programmable air conditioner thermostats where it is desirable to install the  
thermostat in a limited access location while measuring the temperature in the  
living space. The remote room sensor may be used as a stand alone or average  
with local sensor.  
Two−Piece Thermostat Configuration  
The Preferred Series AC/HP Control can be installed in one of two  
configurations. The control may be installed as a single−piece thermostat or it  
may be split into two pieces and mounted in separate locations. As a single−piece  
unit, all required wiring must be brought to the Equipment Control Module for  
connection to the terminal strip. In two−piece configuration, the Display Module  
can be mounted in the living space while the Equipment Control Module may be  
mounted near the indoor furnace or fan coil. Connection from the display to the  
Equipment Control Module requires only two wires. All other control wires are  
connected to the Equipment Control Module from the HVAC equipment. This  
configuration results in a slimmer display and locates the Equipment Control  
Module containing the switching relays away from the main living space where  
relay clicking will not be heard.  
The model numbers on the Display Module and the Equipment Control Module  
(ECM) must match or unpredictable results may occur.  
Two−wire pigtail replacement part number is TX−2WR−05.  
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Wiring  
Wire length should be no more than 250 ft (76m). Use 22 AWG for normal  
wiring applications. Continuous wire lengths over 100 ft (30.5m) should use 20  
AWG or larger.  
INSTALLATION  
Carton contains the following components. See Fig. 2 for programmable models  
or Fig. 3 for non−programmable models.  
A07756  
Fig. 2 − T6−PAC / T6−PHP Carton Contents  
1
2
3
4
. Display Module  
. Stand−off for Equipment Control Module  
. Screws and pig tail  
. Equipment Control Module  
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A07757  
Fig. 3 − T6−NAC / T6−NHP Carton Contents  
. Display Module  
. Stand−off for Equipment Control Module  
. Screws and pig tail  
1
2
3
4
. Equipment Control Module  
AC/HP Control Location  
AC/HP Control should be mounted:  
ꢁ
Approximately 5 ft (1.5m) from floor.  
ꢁ
Close to or in a frequently used room, preferably on an inside parti-  
tioning wall.  
ꢁ
On a section of wall without pipes or duct work.  
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AC/HP Control should NOT be mounted:  
ꢁ
ꢁ
ꢁ
ꢁ
Close to a window, on an outside wall, or next to a door leading to the  
outside.  
Exposed to direct light or heat from a lamp, sun, fireplace, or other  
temperature−radiating objects which could cause a false reading.  
Close to or in direct airflow from supply registers and return−air regis-  
ters.  
In areas with poor air circulation, such as behind a door or in an al-  
cove.  
Installer should determine whether control will be installed as single−piece or  
two−piece. In single−piece configuration, as many as 14 wires may need to run  
to wall mounting location for connection to the control. In two−piece  
configuration, the Display Module and Equipment Control Module are  
connected by two wires.  
Install AC/HP Control  
!
WARNING  
ELECTRICAL OPERATION HAZARD  
Failure to follow this warning could result in personal injury or  
death.  
Before installing AC/HP Control, turn off all power to  
equipment. There may be more than 1 power disconnect.  
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!
CAUTION  
UNIT DAMAGE HAZARD  
Failure to follow this caution may result in equipment damage  
or improper operation.  
Improper wiring or installation may damage AC/HP Control.  
Check to make sure wiring is correct before proceeding with  
installation or turning on power.  
1. Turn off all power to equipment.  
2. If an existing thermostat is being replaced  
a. Remove existing thermostat from wall.  
b. Disconnect wires from existing thermostat, 1 at a time.  
c. As each wire is disconnected, record wire color and terminal marking.  
d. Discard or recycle old thermostat.  
!
CAUTION  
ENVIRONMENTAL HAZARD  
Failure to follow this caution may result in environmental  
damage.  
Mercury is a hazardous waste. Federal regulations require that  
Mercury be disposed of properly.  
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Two−Piece Installation  
The following steps should be followed for the installation of the two−piece  
configuration.  
NOTE: The 2−wire pigtail is not intended to support the weight of the User  
Interface. Do not hang the User Interface from the equipment Control Module  
screw terminals.  
1
. Remove mounting plate from back of Display Module by pressing the  
two tabs on the bottom edge and pulling away. See Fig. 4 and 5.  
A07225  
Fig. 4 − Press Tabs to Remove Backplate  
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A07226  
Fig. 5 − Take Apart  
2
. Route wires through large hole in mounting base. Level mounting base  
against wall (for aesthetic value only—Display Module need not be lev-  
eled for proper operation) and mark wall through 4 mounting holes. To  
avoid unintended bending of wall plate plastic, use all 4 screws and an-  
chors. See Fig. 6.  
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A07165  
Fig. 6 − Backplate Mounting  
3
. Drill two 3/16−in. mounting holes in wall where marked. Thermostat may  
be mounted to a standard junction box, if desired. Hole pattern on ther-  
mostat mounting base matches junction box mounting holes.  
4
. Secure rear plastic mounting base to wall with 4 screws and anchors pro-  
vided. To avoid unintended bending of wall plate plastic, use all 4 screws  
and anchors Make sure all wires extend through hole in mounting base.  
5
. Adjust length and routing of each wire to reach proper connector block  
and terminal on mounting base with 1/4−in. (6mm) extra wire.  
6
. Match and connect equipment wires to proper terminals of each connector  
block being careful not to over tighten the screws. Correct polarity must  
be observed when connecting the two wires from the Equipment Control  
Module to the thermostat mounting base. If wires are connected incorrect-  
ly, the Display Module will not operate. See Fig. 7, 8 and 9.  
1
2
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Control Module Wiring Guide  
Relays  
OAT  
RRS  
Rc  
OAT /  
RRS  
Rh  
return  
{
SRTN  
HUM  
D1  
W / W1  
G
Y/Y2  
C
Y used for  
single stage  
cooling  
dry  
contact  
D2  
V+  
connect  
to user  
O/W2/B  
Y1  
interface Vg  
Y1 used for  
multi-speed  
cooling  
Y1 = stage 1  
Y2 = stage 2  
A07687  
Fig. 7 − Control Module Wiring Guide  
HUM terminal is not used on this model.  
ꢁ
Red is V+  
ꢁ
Black is Vg  
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A07166  
Fig. 8 − Secure Wires to Terminal Strip  
A07167  
Fig. 9 − Connect Pigtail Wires to Display Module  
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NOTE: The 2−wire pigtail is not intended to support the weight of the User  
Interface. Do not hang the User Interface from the equipment Control Module  
screw terminals.  
ꢁ
Red is V+  
ꢁ
Black is Vg  
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8
9
. Push any excess wire into wall and against mounting base. Seal hole in  
wall to prevent air leaks. Leaks can affect operation and cause incorrect  
temperatureand/or humidity measurement.  
. Make sure to attach 2−wire pigtail to Display Module mounting base. It is  
packed loose in the box from the factory. Then attach 2−wire pigtail to the  
back of the Display Module via 2 pin, keyed connector.  
. Reattach Display Module body to mounting base by first setting on at top  
of mounting base and then push bottom corners of Display Module to  
snap into place. See Fig. 10.  
A07169  
Fig. 10 − Attach Display to Backplate  
1
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1
0. Find suitable indoor mounting location for Equipment Control Module,  
either near or on equipment. See Fig. 11.  
IMPORTANT NOTE: Equipment Control Module should not be mounted  
to duct work or below any other controls or equipment (i.e. humidistat,  
humidifier, etc.).  
A07217  
Fig. 11 − Equipment Control Module on Equipment  
1
1. Route wires through rear of Equipment Control Module using either a  
clearancehole or supplied standoff. See Fig. 12.  
1
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A07227  
Fig. 12 − Standoff  
NOTE: Standoffs are provided as an aid when installing Equipment Control  
Module on inside equipment or a solid wall.  
1
2. Match and connect equipment wires to proper terminals of each connector  
block being careful not to over tighten the screws. Correct polarity must  
be observed when connecting the two wires from the Equipment Control  
Module to the thermostat mounting base. If wires are connected incorrect-  
ly, the Display Module will not operate. See Fig. 7, 8 and 9.  
1
3. Snap cover over top of Equipment Control Module. See Fig. 13.  
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A07218  
Fig. 13 − Cover on Equipment Control Module  
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4. Turn on power to equipment. On power up, all display segments will  
light for 5 sec. For the next 5 sec a 2−digit code appears on large display  
which identifies AC/HP Control configuration. Refer to Option 33.  
a. AC — 1−stage air conditioner, AC, with furnace or fan coil  
b. HP — 1−stage heat pump, HP only with fan coil  
c. H — heating only system, furnace only or fan coil with electric  
heat only  
d. C — cooling only system, AC with fan coil  
e. H2 — 2−stage heat pump with fan coil  
f. A2 — 2−stage air conditioner with fan coil or furnace  
1
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Single−Piece Installation  
The following steps should be followed for the installation of the single−piece  
configuration.  
1
. Remove cover from Equipment Control Module by pressing the two tabs  
on the bottom edge and pulling away. Route wires through large hole in  
Equipment Control Module. Level Equipment Control Module against  
wall (for aesthetic value only − Equipment Control Module need not be  
leveled for proper operation) and mark wall through 4 mounting holes.  
To avoid unintended bending of wall plate plastic, use all 4 screws and  
anchors.  
2
. Drill four 3/16−in. mounting holes in wall where marked. Thermostat  
may be mounted to a standard junction box if desired. Hole pattern on  
Equipment Control Module matches junction box mounting holes.  
3
. Secure rear plastic Equipment Control Module to wall with 4 screws and  
anchors provided. To avoid unintended bending of wall plate plastic, use  
all 4 screws and anchors. Make sure all wires extend through hole in  
Equipment Control Module.  
4
. Adjust length and routing of each wire to reach proper connector block  
and terminal on Equipment Control Module with 1/4−in. (6mm) extra  
length. See Fig. 14.  
1
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A07219  
Fig. 14 − Equipment Control Module  
5. Match and connect equipment wires to proper terminals of each connector  
block.  
6
. Push any excess wire into wall and against Equipment Control Module.  
Seal hole in wall to prevent air leaks. Leaks can affect operation and cause  
incorrect temperature and/or humidity measurement.  
7
8
. Remove 2−wire pigtail from thermostat mounting base and attach to  
Equipment Control Module terminal block (terminals V+ and Vg). Attach  
2−wire pigtail to the back of the Display Module via 2 pin, keyed connec-  
tor.  
. Reattach Display Module body to Equipment Control Module by first  
setting on at top and then push bottom corners to snap into place. See Fig.  
1
5.  
2
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A07221  
Fig. 15 − Reattach Display Module  
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. Turn on power to equipment. On power up, all display segments will  
light for 5 sec. For the next 5 sec a 2−digit code appears on large display  
which identifies AC/HP Control configuration. Refer to Option 33.  
a. AC — 1−stage air conditioner, AC, with furnace or fan coil  
b. HP — 1−stage heat pump, HP only with fan coil  
c. H — heating only system, furnace only or fan coil with electric  
heat only  
d. C — cooling only system, AC with fan coil  
e. H2 — 2−stage heat pump with fan coil  
f. A2 — 2−stage air conditioner with fan coil or furnace  
Set AC/HP Control Configuration  
Configuration options enable the installer to configure the thermostat for a  
particular installation. Most are not presented to the homeowner and therefore  
2
1
must be properly set by the installer. (Only those marked with an asterisk *  
below are available to the homeowner.) The homeowner configurations are  
described in the owner’s manual. A special procedure allows entry into the  
configuration mode. Description of each selection and how to use the  
configuration mode follows.  
CONFIGURATION OPTIONS − SUMMARY  
Option 01 — Equipment Type  
Option 02 — Clean Filter Timer Adjustment  
Option 03* — Fahrenheit/Centigrade Selection  
Option 04 — Fan (G) on with W/W1 Selection  
Option 05 — Room Air Temperature Sensing (programmable  
models only)  
Option 06 — Cooling Lockout Below 55ꢂF/13ꢂC Selection (only  
available if outdoor air sensor is present)  
Option 07 — Zoning  
Option 08 — Auxiliary Heat Lockout Temperature Setting (only  
available when heat pump is used and when  
outdoor air temperature sensor is present)  
Option 10 — Reversing Valve  
Option 11 — Adjustable Setpoint Deadband  
Option 12 — Smart Recovery (programmable models only)  
Option 13 — Room Temperature Offset Adjustment  
Option 15 — Enable Auto Mode  
Option 16 — Cycles Per Hour  
Option 17 — Time Between Stages  
2
2
Option 18* — Backlight Configuration  
Option 19 — Dry Contact (programmable models only)  
Option 20 — Outdoor Air Temperature Offset Adjustment  
Option 21* — Keypad Lockout  
Option 24* — Programmable/Non−Programmable  
(
programmable models only)  
Option 25* — Number of Programmable Periods per Day  
programmable models only)  
(
Option 26 — Minimum Cooling Setpoint  
Option 27 — Maximum heating Setpoint  
Option 28 — UV Light Reminder  
Option 29 — Humidifier Pad Reminder  
Option 30* — Programmable Fan (programmable models only)  
Option 31* — Daylight Savings Time Configuration  
(programmable models only)  
Option 32 — Furnace Heat Staging  
Option 33 — Single or Two−Piece Installation  
Option 41 — Variable Speed Blower  
Option 44 — Super Comfort Heat  
Option 99 — Reset to Factory Defaults  
TO ENTER CONFIGURATION MODE  
Press and hold FAN button for approximately 10 sec. The Display Module is  
now in configuration mode. It will automatically exit this mode if no button is  
pressed for 3 minutes. Pressing either FAN or DONE button will exit  
configuration mode immediately.  
2
3
WHILE IN CONFIGURATION MODE  
The option number is displayed in the heat setpoint location and the  
configuration setting is displayed in the cool setpoint location. On the  
T6−PAC/PHP (programmable) models, a box will surround the option number.  
The mode button is used to move the box between the two displayed values. The  
soft keys below the listed values may also be used to move the box between  
selected values. The value inside the box is changed by using the UP/DOWN  
buttons. On the T6−NAC/NHP (non−programmable) models, one of the values  
will be flashing. The mode button is used to change which value is flashing or  
the Home and Sleep buttons may also be used to select which value to flash. The  
value that is flashing is changed by using the UP/Down buttons. All changes  
made are saved at the time of selection and will be saved in the event of the 3  
minute time−out or when installer exits from configuration menu.  
Configuration Options —Selection  
Option 01 — Equipment Type  
HP model — Range: HP, AC, H, C, H2, A2.  
AC model — Range: AC, H, C.  
HP — operates a single−speed heat pump with a fan coil.  
AC — operates a single−speed AC.  
H
— operates a heat−only system. Furnace or fan coil only;  
no outdoor unit.  
C
— operates a cool only−system. Outdoor AC unit with an  
indoor fan coil with no strip heaters.  
A2 — 2−stage air conditioner with a furnace or fan coil.  
H2 — 2−stage heat pump with a fan coil.  
2
4
Defaults  
HP model defaults to HP.  
AC model defaults to AC.  
Option 02 — Clean Filter Timer  
Select hours of blower operation (heating, cooling, or fan) before CHECK  
FILTER icon is displayed. With OF selected, icon will never come on, disabling  
this feature. Time selection can range from 800 to 7200 hr by selecting numbers  
1
through 9. (Time is 800 X number selected.) Default is 4 (3200 hr).  
Recommended selections are disposable filter−800 to 2400 hr, media filter−2400  
to 3200 hr, or electronic air cleaner−1600 to 2400 hr of blower operation. For  
higher efficiency filter, please consult filter’s Installation Instruction for details.  
Option 03 — Fahrenheit/Centigrade  
Select between Fahrenheit (F) and Centigrade (C) operation. Factory default is  
Fahrenheit (F).  
Option 04 — Fan (G) On With W/W1  
This selection determines whether fan (G) output is to be On or OFF when any  
W/W1 (furnace or strip heat) output is On. Most furnaces and fan coils manage  
their own blowers and do not require separate G signal. For these applications,  
select OFF. Some auxiliary heaters require separate G signal to turn on blower. In  
this case, select On.  
Default is OF (off).  
Option 05 — Room Air Temperature Sensing (programmable models only)  
The remote room sensor may be installed as a single sensor or multiple sensors  
may be installed for further averaging functionality. See Fig. 16  
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RRS  
SRTN  
Sensor 1  
Sensor 2  
Sensor 3  
Sensor 4  
A09130  
Fig. 16 − Remote Room Sensor − Parallel Wiring  
This selection determines which sensor the control will use for measuring room  
air temperature. Room air temperature can be sensed in one of three ways; the  
local sensor (L) located on the Display Module, the remote room air sensor (r),  
or the average of local and remote sensors (Lr). Settings are L, r, Lr.  
Default is L.  
Option 06 — Cooling Lockout Below 55_F  
This selection disables cooling when outdoor temperature is below 55ꢂF/13ꢂC.  
It requires an outdoor temperature sensor. Setting is not available if valid outdoor  
sensor is not connected. Set to OF (off) to allow cooling below 55ꢂF/13ꢂC. Set  
to On to prevent cooling below 55ꢂF/13ꢂC.  
Factory default is OF (off).  
2
6
Option 07 — Zoning  
This selection should be set to On when the thermostat is to be used as part of a  
zoning system. It is assumed that the zoning equipment will take care of time  
guard and cycle timers. The minimum on time is still controlled by the  
thermostat.  
Default is OF (off).  
Option 08 — Auxiliary Heat Lockout Temperature  
This selection is available on heat pump systems with a valid outdoor  
temperature sensor connected. Available settings are: Off, 5, 10, 15, 20, 25, 30,  
3
5, 40, 45, 50, 55.  
OF (off) − function is disabled. Auxiliary heat is allowed to operate whenever  
sufficient demand for heat is available.  
5
to 55ꢂF (−15 to 13ꢂC) − Outdoor temperature above which the auxiliary heat  
is not allowed to operate (unless MODE is set to Emergency Heat). If room  
temperaturefalls below 45ꢂF (7ꢂC), the auxiliary heat will be allowed to turn on  
and will continue to run until demand is satisfied.  
Default is OF (off).  
Option 10 — Reversing Valve  
This selection is only available on heat pump systems. “O” terminal can be  
configured to be energized in either heating mode or in cooling mode, depending  
on heat pump operation. “O” is used to describe a heat pump system that  
energizes its reversing valve in cooling. “B” is used to describe a heat pump  
system that energized its reversing valve in heating.  
H — Reversing valve output (O/W2/B) is energized when HEAT mode is  
selected.  
2
7
C — Reversing valve output (O/W2/B) is energized when COOL mode is  
selected.  
Default is C.  
Option 11 — Deadband Setting Between Heat & Cool  
This option is not available on Heat Only and Cool Only systems. This selection  
is to allow the installer to choose how much differential exists between the  
heating and cooling setpoints. Allowable selections are 1−6.  
Default is 2.  
Option 12 — Smart Recovery  
Smart Recovery OF (off) means setpoints change precisely at setback recovery  
time. Thirty, 60, or 90 selects the number of minutes recovery starts before  
programmed recovery time. Recovery takes place smoothly during the selected  
recovery time, ending at the recovery time and temperature which is  
programmed. Not available with non−programmable thermostats or when  
thermostat is configured as non−programmable.  
Default is 90.  
Option 13 — Room Air Temperature Offset Adjust  
The number of degrees to be added to the displayed temperature to calibrate or  
deliberatelymiscalibrate the measured room temperature ( −5 to +5ꢂ).  
Default is 0.  
Option 15 — Enable Auto Mode  
This selection is not available if the thermostat is configured as Heat Only or  
Cool Only in Option 1. This allows the homeowner to select auto changeover  
mode in addition to heat and cool. This allows the thermostat to automatically  
change between heating mode and cooling mode when sufficient demand for  
heating or cooling exists.  
2
8
On — Auto mode is available.  
OF — Auto mode is not available.  
Default is On.  
Option 16 — Maximum Cycles Per Hour  
This selection limits the number of cycles per hour that the thermostat allows the  
system to operate. Selections are 2, 4, 6.  
2
— The heating and cooling outputs will be energized no more than 2 times per  
hour. When an output is energized, it will not be energized again for 30 minutes.  
— The heating and cooling outputs will be energized no more than 4 times per  
hour. When an output is energized, it will not be energized again for 15 minutes.  
— The heating and cooling outputs will be energized no more than 6 times per  
4
6
hour. When an output is energized, it will not be energized again for 10 minutes.  
Default is 4.  
Option 17 — Time Between Equipment Stages  
This selection is only available for heat pump systems. This determines the  
minimum number of minutes of equipment operation on the highest compressor  
stage before allowing the transition to auxiliary heat. Available selections are 10,  
1
5, 20, and 25. The time between stages of any individual piece of equipment,  
such as low speed and high speed compressor or fan coil stages, will be fixed at  
0 minutes.  
1
Default is 15.  
Option 18 — Backlight Configuration  
When OF (off), the backlight will be lit for 10 seconds after a button is pressed.  
After 10 seconds of no button presses, the backlight turns off. When On, the  
backlight will normally be on and dim in appearance. The backlight brightness  
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9
becomes brighter when a button is pressed. After 10 seconds of no button  
presses, the backlight will return to the dimmer level until another button press  
occurs. The range of brightness is 1 through 5 with 5 being full brightness.  
Default is 3.  
Option 19 — Dry Contact Configuration (programmable models only)  
There are 2 available selections, OF and 1.  
OF — The dry contact is always de−energized.  
1
— The dry contact will be energized for the specified number of minutes per  
hour. This selection is programmable by period. When this selection is changed  
from OF to 1, the period icons are shown and the minute segments of the clock  
display are shown. The triangle icon next to the WAKE period will be on and a  
value between 0 and 60 will be shown in the minutes display. See Operational  
Information and Wiring Diagrams for further explanation of dry contact  
configuration and use. To change the period or minutes, press the soft key below  
the period or minutes and then use the UP/DOWN buttons to change to the  
desired value.  
Default is OF (off).  
Option 20 — Outdoor Air Temperature Offset Adjustment  
This selection allows the calibration, or deliberate miscalibration of the outdoor  
air temperature sensor reading. The selection ranges from −5 to +5ꢂ.  
Default is 0.  
Option 21 — Keypad Lockout (programmable models only)  
This selection allows the installer to limit access to the keypad. Selections are OF  
(off), 1, 2, 3.  
OF (off) — The user has full access to the keypad.  
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0
1
2
3
— The user has access to modify setpoints, time of day.  
— The user has access to change the setpoints only.  
— The entire keypad is locked. When a button is pressed, the backlight will  
turn on but none of the operating parameters will be changed.  
When the keypad lock selection is turned on, the padlock icon will be displayed.  
To unlock the keypad, press and hold the UP/DOWN buttons simultaneously for  
five seconds. When the keypad is unlocked, the padlock icon will turn off. The  
keypad will remain unlocked for two minutes after the last button press. After  
two minutes with no button presses, the keypad will lock again. The keypad will  
not lock in the software configuration mode or in the installer test mode.  
Default is OF (off).  
Option 21 — Keypad Lockout (non−programmable models only)  
This selection allows the installer to limit access to the keypad. Selections are OF  
(off), 1, 2.  
OF (off) — The user has full access to the keypad.  
1
2
— The user has access to change the setpoints.  
— The entire keypad is locked. When a button is pressed, the backlight will  
turn on but none of the operating parameters will be changed.  
When the keypad lock selection is turned on, the padlock icon will be displayed.  
To unlock the keypad, press and hold the UP/DOWN buttons simultaneously for  
five seconds. When the keypad is unlocked, the padlock icon will turn off. The  
keypad will remain unlocked for two minutes after the last button press. After  
two minutes with no button presses, the keypad will lock again. The keypad will  
not lock in the software configuration mode or in the installer test mode.  
Default is OF (off).  
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1
Option 22 — High Cool Latch Temperature (only available if outdoor  
sensor is present)  
An outdoor sensor is required for high cool latch feature.  
This selection is only available when Option 1 is set to H2, A2, or h2 and when  
Option 7 (zoning) is set to OF (off). Configuration settings are OF (off), 80, 85,  
9
0, 95, 100, 105, 110, On.  
OF (off) — Cooling always starts in low stage (Y1) and stages up to high stage  
Y1 and Y/Y2) when demand is sufficient and staging timer constraints have  
been satisfied.  
0 to 110ꢂF (27 to 43ꢂC) — Outdoor temperature above which both first and  
(
8
second stages of the compressor are energized to satisfy all cooling demands.  
When a cycle starts under a high cool latch, it will finish the cooling cycle on  
high stage.  
On — The Y1 and Y/Y2 outputs are simultaneously energized to satisfy all  
cooling demands.  
Default is OF (off).  
Option 23 — High Heat Latch Temperature (only available if outdoor  
sensor is present)  
This selection is only available when Option 1 is set to H2, or h2 and Option 7  
(
4
zoning) is set to OF (off). Configuration settings are OF (off), 20, 25, 30, 35, 40,  
5, 50, On.  
OF (off) —Heating always starts in low stage (Y1) and stages up to high stage  
Y1 and Y/Y2) when demand is sufficient and staging timer constraints have  
been satisfied.  
0 to 50ꢂF (−7 to 10ꢂC) — Outdoor temperature below which both first and  
second stages of the compressor are energized to satisfy all heating demands.  
(
2
3
2
When a cycle starts under a high heat latch, it will finish the heating cycle on  
high stage.  
On — The Y1 and Y/Y2 outputs are simultaneously energized to satisfy all  
heating demands.  
Default is OF (off).  
Option 24 — Programmable/Non−Programmable  
This selection allows the installer to configure the thermostat as either  
programmable or non−programmable. Selections are P, nP.  
Default is P (programmable models only).  
Option 25 — Number of Programmable Periods  
This selection allows the installer to configure the thermostat for two or four  
periods per day. Two periods is a common commercial application and four  
periods is more common for residential. This selection is not available if Option  
2
4 has been set to nP to configure the thermostat for non−programmable  
operation.  
2
4
— Periods DAY and SLEEP are available  
— Periods WAKE, DAY, EVE, and SLEEP are available.  
Default is 4.  
Option 26 — Minimum Cooling Setpoint  
This selection allows the installer to configure the minimum cooling setpoint that  
the user is allowed to set. The range is based on the value of the adjustable  
deadband Option 11, such that the minimum of the range is 50ꢂF/10ꢂC plus the  
adjustable deadband and the maximum is 90ꢂF/32ꢂC.  
Default is 52ꢂF/11ꢂC (based on the adjustable deadband default = 2).  
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3
Option 27 — Maximum Heating Setpoint  
This selection allows the installer to configure the maximum heating setpoint.  
The range is based on the adjustable deadband value Option 11, such that the  
minimum of the range is 50ꢂF/10ꢂC and the maximum is 90ꢂF/32ꢂC minus the  
deadband.  
Default is 88ꢂF/31ꢂC (based on the adjustable deadband default = 2).  
Option 28 — UV Light Reminder  
This selection allows the installer to select the number of months after which the  
UV Light icon will be displayed to indicate to the homeowner that it is time to  
call the dealer to have the UV Lights replaced. Selections available are OF (off),  
6
, 12, 18, 24, 30, 36, 42, 48.  
OF (off) — The UV Light reminder is turned off and will never be displayed.  
−48 — The number of months after which the UV Light reminder will be  
6
displayed, “CHECK UV LIGHT”.  
Default is OF (off).  
Option 30 — Programmable Fan (programmable models only)  
This selection allows the homeowner to program the fan selection to “Auto” or  
“
On” fan operation for each of the program schedule periods. This selection is  
only available on programmable models.  
OF (off) — Programmable fan is disabled and the homeowner must manually  
select “Auto” or “On” for fan operation.  
On — Programmable fan is enabled. The homeowner can program “Auto” or  
“
On” fan operation along with the heat and cool setpoints for each programmed  
period. When the program schedule is running, the programmed heat setpoint,  
cool setpoint, and fan selection for that period will be used. If the homeowner  
3
4
“
overrides” the programmed fan setting by pressing the fan button, the override  
selection will remain in effect until the next programmed period time.  
Default is OF (off).  
Option 31 — Daylight Savings Time Configuration (programmable models  
only)  
This selection allows the installer to set the thermostat to automatically change  
by one hour on the specified day, month, and week specified.  
OF (off) — Daylight Savings Time Function disabled.  
1
,2 On — The first time the UP/DOWN button is pressed, the value of this  
selection changes from OF (off) to 1. When 1 is displayed, the days of the week  
and clock digits will be turned on. The installer will set the start date (Spring) for  
Daylight Savings Time by setting the day of the week by selecting the  
appropriate triangle icon next to the days of the week, the month of the year will  
be set in the clock hours location (range 1−12) and the week of the month will be  
set in the clock minutes location. The week of the month selections will be F, 2,  
3
, 4, and L for First, 2nd, 3rd, 4th, and Last. So for the first Sunday in April, the  
display would show SUN, 4, F. When 2 is displayed, the installer will then  
choose the end date for daylight savings time (Fall). To activate the function, the  
installer changes the “2” by pressing the up button and “On” is displayed. The  
setting shall be left “On” to enable the Daylight Savings Time function.  
Default is OF (off).  
Option 32 — Furnace Heat Staging Control (available only when the HP  
thermostat is configured to operate AC equipment).  
1
— Thermostat controls W1 output only and furnace controls the turn on and  
turn off of higher stages of heat.  
3
5
2
— Thermostat will control the W1 and O/W2/B outputs.  
Default is 1.  
Option 33 — Single or Two−Piece Installation  
This configuration allows the thermostat to compensate for the amount of heat  
generated by the thermostat electronics to allow more accurate sensing of the  
temperature sensor. The amount of heat compensation will be different between  
single installation and two−piece installation.  
Range: 1P or 2P  
1P — The installation is single piece.  
2P — The installation is two separate pieces.  
Default is 2P.  
Option 41 — Variable Speed Blower  
This selection allows the installer to select between a single speed or variable  
motor.  
Off − The system has a single speed (PSC) blower.  
On − The system has a variable speed blower.  
Factory default is OF (Off)  
Option 44 — Super Comfort Heat  
This option is only available on heat pump units HP (HP, H2) when Option 41  
(Variable Speed Blower) is set to On and the system has a valid OAT sensor.  
OF (Off) − Comfort Heat is off  
On − Comfort Heat feature is on.  
If the outdoor air temperature is between 12 to 40ꢂF (−11 to 4ꢂC) and the  
compressor is running in heating, then the fan output is turned off. This will  
signal the variable speed blower to reduce the air speed. The fan output is turned  
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6
off even if the user has the fan selection set to continuous fan. The fan output  
will be turned back on in this temperature range if the maximum capacity of  
auxiliary heat is on due to system demand (auxiliary heat on in response to a  
defrost signal shouldn’t cause the fan to turn back on).  
If the outdoor air temperature is below 12ꢂF/−11ꢂC and there is sufficient  
demand for the equipment to be on, then the fan output is turned back on and the  
W/W1 output is energized. In a two speed unit the Y/Y2 output should be  
energized in addition to the W/W1 output.  
NOTE: All temperature boundaries have a +/− 2ꢂ hysteresis.  
Factory default is OF (Off).  
Option 99 — Reset to Factory Defaults  
Use this capability to reset the stat to “out of the box” conditions. BEWARE! All  
configuration settings, program settings, clock, and calendar which have been  
manually entered will be lost!  
When this option is selected, the configuration number (99), will appear on the  
left and 10 will appear on the right. To perform the reset, first use the MODE key  
to move the box from the 99 to the 10 (programmable model) or to flash the 10  
(non−programmable model). Then press and hold the DOWN key. The 10 will  
start counting down toward zero. If the DOWN key is kept pressed until the  
count reaches zero, the reset will be performed. When the value reaches zero, the  
heat setpoint shall display −−. The cool setpoint shall display − and the room air  
temperature shall display Fd. When the factory defaults have been restored, the  
thermostat will act as if power was cycled and return to normal operation. If the  
DOWN key is released early, the number will return to 10 and the reset will not  
occur.  
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7
SYSTEM START−UP AND CHECKOUT  
The AC/HP Control is designed with a built−in installer test capability. It allows  
easy operation of equipment without delays or setpoint adjustments to force  
heating or cooling. To enable installer test mode, press and hold the fan button  
for 15 seconds. After 10 seconds, the thermostat will enter Configuration Mode.  
Continuing to hold the Fan button through 15 seconds will cause the thermostat  
to enter Installer Test Mode. Pressing the Mode button will change the system  
operating mode to test the heating and cooling equipment. Auto Mode is not  
available during Installer Test Mode. If no buttons are pressed for 15 minutes, the  
installer test mode will be terminated. Pressing DONE at any time will exit  
installertest mode.  
Heat − The first stage of heating will be energized for three minutes, then the first  
and second stages (if a second stage exists) will turn on for an additional three  
minutes. During the first stage of heating, the HEAT ON icon will be displayed.  
The “auxiliary heat on” icon will be displayed if the second stage is electric heat  
(
HP unit type). For heat pump installation, only 1 stage of auxiliary heat is  
available. Any staging of auxiliary heat must be managed by the furnace or fan  
coil. At the end of the equipment cycle the MODE will return to OFF. The  
display will count down from 180 seconds to 0 for each stage when the  
equipment is energized. The test of a heating or cooling cycle can be terminated  
before the timer expires by pressing the MODE button and changing the system  
mode to OFF.  
Installer test for cooling is the same as described for heating above. COOL ON  
will be displayed during cooling in Installer Test Mode. In a heat pump  
application, when the mode is set to “em heat” the auxiliary heat will turn on for  
3
minutes. The clock display will count down from 180 to 0 during this test.  
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TO TEST FAN  
Fan button switches FAN icon between AUTO and On. While On is displayed,  
G output will be energized, turning fan on. On some fan coils, fan continues to  
operate for 90 sec after G signal is removed.  
Final Settings  
Be sure to press DONE to exit installer setup mode. If the system is to be left in  
operation after installation is complete, use MODE button to select between  
HEAT, COOL, or AUTO to provide desired operation of heating, cooling, or  
auto.  
On the programmable models, the default setpoints and programmed schedule  
conform to the Energy Starꢃ requirements of the U.S. Department of Energy for  
both heating and cooling. These provide energy saving temperature settings.  
Refer to Table 1.  
Table 1 – Energy Star Default Schedule  
SCHEDULE  
Wake 6:00 AM  
Day 8:00 AM  
HEAT  
COOL  
68ꢂF/20ꢂC  
60ꢂF/16ꢂC  
68ꢂF/20ꢂC  
60ꢂF/16ꢂC  
78ꢂF/26ꢂC  
85ꢂF/29ꢂC  
78ꢂF/26ꢂC  
82ꢂF/28ꢂC  
Evening 5:00 PM  
Sleep 10:00 PM  
If the programmed schedule is to be used, make sure the triangle icon next to the  
FOLLOW SCHEDULE icon is turned on. Pressing the Schedule button will  
cycle the triangle icon through the FOLLOW SCHEDULE, HOLD and  
VACATION selections.  
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9
If fixed temperatures are desired, use SCHEDULE button to turn on arrow icon  
next to HOLD. This will maintain setpoints, not allowing them to change with  
programmed schedule.  
The FAN button may be used to select between AUTO (fan on only with  
equipment) and On (fan on continuously) fan modes. For further information on  
temperature selection and programming, refer to Homeowner’s Guide.  
Setting The Clock, Calendar, Daily Schedule, and Vacation  
Settings (programmable models only)  
To set the clock, press the SET button once. The Clock will be displayed at the  
bottom center of the screen. Use the soft keys to move the box around the digits  
to be set and the UP/DOWN buttons to change the setting. Concurrent presses of  
the set button will cycle through the calendar, daily schedule, and vacation  
settings.  
Calendar may be changed by using the soft keys to select the Month, Day, or  
Year. The UP/DOWN buttons are used to change the Month, Day, or Year setting  
when the box surrounds it. Day of the week (Mon−Sun) is determined by  
calendar settings and is not directly adjustable.  
When changing daily schedule settings, the soft keys are used to set the days,  
period times, heating setpoints, and cooling setpoints. The UP/DOWN buttons  
are used to change the setting with the box around it. ALL PROGRAM  
PERIODS (WAKE, DAY, EVE, SLEEP) MUST OCCUR WITHIN THE SAME  
2
4 HOUR PERIOD.  
When changing Vacation settings, the soft keys are used to choose the selection  
to be adjusted and the UP/DOWN buttons are used to change the setting.  
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Vacation (programmable models only)  
A vacation selection is available specifically for times where the home will not  
be occupied for an extended period. Vacation mode has an automatic hold,  
meaning that setpoints are not affected by the programmed schedule. Vacation  
mode is active for a specified period of time. While in vacation mode, the system  
provides temperature protection for the home in the selected mode, but not  
comfort. When vacation mode is active, an arrow will be displayed beside  
“VACATION” in the upper left corner of the display.  
Vacation Setpoints  
A special set of temperature setpoints exist which are active in vacation mode.  
They are adjustable by the homeowner, are exclusively for vacation mode, and  
are remembered from one vacation selection to the next. See Table 2 for default  
values.  
Table 2 – Vacation Setpoints Default Values  
MODE  
Fan  
AUTO  
Auto  
Heat Setpoint  
Cool Setpoint  
55ꢂF/13ꢂC  
85ꢂF/29ꢂC  
OPERATIONAL INFORMATION  
Timers  
Five−MinuteCompressor Timeguard  
This timer prevents compressor from starting unless it has been off for at least 5  
minutes. It can be overridden for 1 cycle by simultaneously pressing FAN and  
UP buttons.  
4
1
Cycle Timer  
Based on the selection of 2, 4, or 6 cycles per hour, this timer is set to 30, 15, or  
1
0 minutes. This much time must elapse from the start of one cycle before  
another cycle can start. It serves to impose the cycles per hour limits. It can be  
defeated for one cycle by simultaneously pressing the FAN and UP buttons.  
Ten−MinuteStaging Timer  
In multistage heating or cooling, this timer prevents any higher stage from  
turning on until preceding stage has been on for 10 minutes. When staging  
between compressor and electric heat or between compressor and furnace heat,  
the time is configurable. The timer is configurable via Option 17. This timer is  
overridden if temperature error is greater than 5ꢂ (usually due to a large change  
in desired temperature) and equipment stages up in 60 second intervals.  
The ten−minute staging timer does not require the thermostat to change to a  
higher stage after 10 minutes. If the system is able to meet the demand (maintain  
setpoint) it may not change stages after the 10 minute timer has expired. If there  
is sufficient demand for a higher stage at the end of 10 minutes or at any time  
after the 10 minute timer has expired, the thermostat will energize the next higher  
stage.  
Defrost  
Detection of defrost will not work properly if the installer has configured the  
O/W2/B output to function as a B output. During heat pump heating, a defrost  
signal shall be considered valid if the compressor output is energized and the  
defrost signal has been active for less than 15 consecutive minutes. Any defrost  
signal present for longer than 15 minutes shall be considered invalid.  
Heat pump/fan coil systems shall use this input to:  
4
2
ꢁ
ꢁ
Detect that defrost is in progress and energize the auxiliary heat to  
provide homeowner comfort during the defrost cycle  
Allow a defrost cycle to run to completion regardless of the system  
demand  
Three−Minute Minimum on Time  
In normal operation, when a stage turns on, it will not turn off for a minimum of  
3
minutes. If the setpoint is changed, this timer is canceled, allowing the  
equipment to turn off immediately when the demand is removed.  
Heat/Cool Setpoints (Desired Temperature)  
A minimum difference of 1ꢂ and maximum of 6ꢂ is enforced between heating  
and cooling desired temperatures. This is done by allowing 1 setting to “push”  
the other, to maintain this difference. This difference is adjustable via  
Configuration Option 11.  
Equipment On Indicators  
When cooling equipment is on, a COOL ON icon is displayed. While cooling  
equipment operation is delayed by the timeguard or cycle timer, COOL ON will  
flash. The same is true for HEAT ON.  
During second stage compressor operation a “2” will be displayed with the  
HEAT ON or COOL ON icon. This is displayed when the thermostat is  
configured as H2, A2, or h2.  
When the W is energized in a heat pump, the auxiliary heat on icon will be  
displayed.  
Auto Changeover  
When auto changeover mode is selected, a change from heat to cool (or vice  
versa) will not occur until an opposite mode demand has existed for 20 minutes.  
If setpoint is changed, 20−minute requirement is deleted.  
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3
Emergency Heat Mode  
When AC/HP Control is configured as a heat pump and emergency heat is  
selected, all Y signals are locked out, and W becomes energized upon a call for  
heat.  
Programmable Fan (programmable models only)  
The fan output can be programmed based on period of the day. When  
programming for each day and period the fan can be set to On or AUTO. If the  
fan button is pressed to change from On to Auto or vice versa when  
programmable fan has been enabled, the manual change will only remain in  
effect until the next program period, when the programmable fan setting will be  
changed per the scheduled setting.  
Dry Contact  
On the programmable models, the dry contact that can be used for control of an  
auxiliary device. The dry contact may be configured to be closed for a specific  
number of minutes per hour for each period of the program schedule. This can  
be used to operate a ventilator, damper, system blower, or other auxiliary device.  
There are two terminals, D1 and D2.  
If it is desired to operate a ventilator or other device, the D1 and D2 terminals  
can be connected directly to the equipment. This will provide a closed contact  
for the specified number of minutes per hour. See Option 19.  
If timed control of the system blower is required, the dry contact can be used for  
this function. The G terminal can be connected to one of the dry contact  
terminals with the other terminal being connected to Rc and/or Rh for timed  
control of the fan. Note that this is not the same as programmable fan Option 30.  
See Wiring Diagrams for more information.  
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4
Relays  
This thermostat uses latching relays. When the thermostat loses power, the relays  
will remain in their last position until power is restored and all relays are reset to  
their correct position. Out of the box, the outputs may appear to be On when the  
thermostat is not powered. This is normal. Output states should only be checked  
when the thermostat is powered.  
Temperature Offset After Power Cycle  
To compensate for internal heat build−up from the electronics in the thermostat,  
the thermostat will add an offset to the actual temperature that it measures. If the  
thermostat power is cycled quickly, one can witness an immediate increase in the  
actual temperature displayed due to this added offset. The thermostat display will  
return to the actual room temperature after several minutes of operation.  
TROUBLESHOOTING  
If the display module doesn’t power up after power is applied, check the Rc/Rh  
and C terminals for 24VAC. If 24VAC is present, check the voltage between Vg  
and V+. This voltage will be approximately 12−20VDC. If voltage is present,  
check the polarity to make sure it is wired correctly. The display will not power  
up if polarity is reversed.  
If dashes appear for Option 01 in config and during reboot, the problem could be  
the red pigtail being wired to Rc or Rh and the black pigtail being wired to C. If  
so, remove the two−wire pigtail and connect to the V+ and Vg terminals.  
Error Codes  
“−−” − If AC/HP Control cannot properly read room temperature, display will  
indicate “−−” and all outputs (except fan, if on) will turn off. In the case where  
the installer has selected to average the local sensor and the remote room sensor,  
the AC/HP display will alternate between “−−” for the failed sensor and the  
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5
temperature sensed by the working sensor every 10 seconds. The control will  
operate from the temperature sensed by the working sensor.  
E1 − If the Display Module and the Equipment Control Module cannot  
communicate via two−wire connection, an E1 will be displayed.  
E2 − There is no E2 error message.  
E3 − If AC/HP Control cannot properly read outdoor temperature, and it is  
needed for proper operation, display will indicate “−−” in the outdoor  
temperaturelocation.  
E4 − If AC/HP Control’s internal memory fails, E4 will be displayed. Replace  
AC/HP Control.  
Table 3 can be used as a troubleshooting tool for determining which outputs will  
be active for a particular configuration and each operating mode.  
When replacing a failed component such as an equipment control module or a  
display module, the installer should replace both parts as a matched set. It is very  
easy to accidentally mix an A/C or HP display with a PAC equipment control  
module. When this happens, some functions appear in the setup while others do  
not. This can be very confusing to troubleshoot. Verify that both parts have the  
same model and serial number when troubleshooting the thermostat.  
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Table 3 – Equipment Configuration Outputs  
For COOL, HEAT and Emergency Heat modes, the following chart shows the  
state for each output in each stage of operation  
EQUIP  
HARD-  
EM  
EM  
COOL  
STG 1  
COOL  
STG 2  
HEAT  
HEAT  
HEAT  
HEAT  
CONFIG  
WARE  
HEAT  
STG 1  
HEAT  
STG 2  
STG 1  
STG 2  
STG 3  
STG 4  
OPTION 01  
CONFIG  
SS AC  
AC  
Y/Y2  
Y/Y2  
-
-
W/W1  
W/W1  
-
-
-
-
-
-
-
W/W1  
O/W2/B  
(if  
HP  
SS AC  
-
-
2
S
Opt32+2)  
Y/Y2,  
SS HP  
Y/Y2,  
HP  
HP  
-
-
Y/Y2  
-
-
-
-
W/W1  
W/W1  
-
-
RVS + O  
O/W2/B  
W/W1  
Y/Y2,  
W/W1,  
O/W2/B  
SS HP  
Y/Y2,  
Y/Y2  
RVS + B  
O/W2/B  
SS HP  
Y/Y2  
W/W1  
Y1/W2  
Y/Y2,  
Y/Y2,  
Y/Y2  
W/W1  
RVS + O  
2S  
-
-
Y/Y2  
W/W1  
W/W1  
O/W2/B  
W/W1  
Y1/W2  
Y1/W2  
Opt43 = On  
Y/Y2,  
Y1/W2,  
W/W1  
SS HP  
Y/Y2,  
W/W1,  
O/W2/B  
Y/Y2,  
Y1/W2,  
O/W2/B  
Y/Y2,  
W/W1  
RVS + B  
2S  
2S  
Y/Y2  
O/W2/B  
Y1/W2  
Opt43 = On  
O/W2/B  
Y/Y2,  
W/W1  
2
2
SPD AC  
SPD HP  
Y1/W2  
W/W1  
-
-
-
-
-
-
Y1W2  
O/W2/B  
Y1/W2  
Y/Y2  
Y1/W2  
Y/Y2  
Y1/W2  
Y1/W2  
Y/Y2  
2
S
Y1/W2  
W/W1  
RVS + O  
O/W2/B  
O/W2/B  
W/W1  
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Table 3 − Equipment Configuration Outputs (cont.)  
HARD-  
EQUIP  
CONFIG  
EM  
EM  
COOL  
STG 1  
COOL  
STG 2  
HEAT  
HEAT  
HEAT  
HEAT  
WARE  
HEAT  
STG 1  
HEAT  
STG 2  
STG 1  
STG 2  
STG 3  
STG 4  
OPTION 01  
CONFIG  
Y1/W2  
Y/Y2  
Y1/W2  
Y/Y2  
2
SPD HP  
Y1/W2  
Y/Y2  
Y1/W2  
2
S
Y1/W2  
-
-
W/W1  
-
-
RVS + B  
O/W2/B  
O/W2/B  
W/1  
O/W2/B  
If HP or  
2S board  
AND  
AC  
HP  
Heat Only  
Unit  
-
-
W/W1  
-
-
2
S
Opt32 + 2  
Cool Only  
Unit  
Y1/W2  
Y/Y2  
2
S
Y1/W2  
Y/Y2  
-
-
-
-
-
-
-
-
-
-
-
Cool Only  
Unit  
AC  
HP  
-
-
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WIRING DIAGRAMS  
Display module  
Display module wall mount  
Equipment Control Module  
Fan Coil  
Heat Pump  
V+  
Vg  
V+  
Vg  
V+  
Vg  
O
W3  
W2  
Y
O
V+  
Vg  
RVS/Heat Stage 2  
Heat Stage 1  
Compressor  
Not Used  
O/B W2  
W/W1  
Y/Y2  
Y1  
W2  
Y
R
Fan  
G
G
R
24VAC Hot Heating  
Rh  
24VAC Hot Cooling  
Rc  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
2
4VAC Common  
C
COM  
COM  
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
Outdoor Sensor *  
OAT/RRS  
Remote Room  
Sensor *  
*
Indicates connection may not be required/available.  
A09174  
Fig. 17 − Display to Equipment Control Module Connection  
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WIRING DIAGRAMS(cont.)  
Thermostat  
Fan Coil  
Heat Pump  
O
O
RVS/Heat Stage 2  
Heat Stage 1  
Compressor  
Not Used  
O/B W2  
W/W1  
Y/Y2  
Y1  
W3  
W2  
Y
W2**  
Y
R
Fan  
G
G
R
24VAC Hot Heating  
Rh  
24VAC Hot Cooling  
Rc  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
24VAC Common  
C
COM  
COM  
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
Outdoor Sensor *  
OAT/RRS  
Remote Room  
Sensor *  
*
*
Indicates connection may not be required/available.  
* Some heat pumps may designate W1.  
A09154  
Fig. 18 − Fan Coil with Heat Pump (HP Thermostat)  
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WIRING DIAGRAMS(cont.)  
Thermostat  
Fan Coil  
O
RVS/Heat Stage 2  
Heat Stage 1  
Compressor  
Not Used  
O/B W2  
W/W1  
Y/Y2  
Y1  
W3  
W2  
Fan  
G
G
R
2
4VAC Hot Heating  
Rh  
24VAC Hot Cooling  
Rc  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
Aux. Connection  
2
4VAC Common  
C
COM  
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
Outdoor Sensor *  
OAT/RRS  
Remote Room  
Sensor *  
*
Indicates connection may not be required/available.  
A09155  
Fig. 19 − Fan Coil shown with Auxiliary Connection #1  
5
1
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WIRING DIAGRAMS(cont.)  
Thermostat  
Fan Coil  
Air Conditioner  
O
RVS/Heat Stage 2  
Heat Stage 1  
Compressor  
Not Used  
O/B W2  
W/W1  
Y/Y2  
Y1  
W3  
W2  
Y
Y
R
Fan  
G
G
R
24VAC Hot Heating  
Rh  
24VAC Hot Cooling  
Rc  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
2
4VAC Common  
C
COM  
COM  
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
Outdoor Sensor *  
OAT/RRS  
Remote Room  
Sensor *  
*
Indicates connection may not be required/available.  
A09175  
Fig. 20 − Fan Coil with Air Conditioner  
5
2
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WIRING DIAGRAMS(cont.)  
Thermostat  
Fan Coil  
O
RVS/Heat Stage 2  
Heat Stage 1  
Compressor  
Not Used  
O/B W2  
W/W1  
Y/Y2  
Y1  
W3  
W2  
Fan  
G
G
R
2
4VAC Hot Heating  
Rh  
24VAC Hot Cooling  
Rc  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
Aux. Connection  
24VAC Common  
C
COM  
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
Outdoor Sensor *  
OAT/RRS  
Remote Room  
Sensor *  
*
Indicates connection may not be required/available.  
A09156  
Fig. 21 − Fan Coil shown with Auxiliary Connection #2  
Heat pump/air conditioner removed for clarity)  
(
5
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WIRING DIAGRAMS(cont.)  
Thermostat  
Heat Stage 2  
Furnace  
Air Conditioner  
*
O/B W2  
W2*  
Heat Stage 1  
Compressor  
Not Used  
W/W1  
Y/Y2  
Y1  
W/W1  
Y/Y2  
Y
R
Fan  
G
G
R
2
4VAC Hot Heating  
Rh  
24VAC Hot Cooling  
Rc  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
2
4VAC Common  
C
COM  
COM  
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
Outdoor Sensor *  
OAT/RRS  
Remote Room  
Sensor *  
*
Indicates connection may not be required/available.  
A09157  
Fig. 22 − Furnace with Air Conditioner  
5
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WIRING DIAGRAMS(cont.)  
Thermostat  
RVS/Heat Stage 2  
Heat Stage 1  
Compressor  
Not Used  
O/B W2  
W/W1  
Y/Y2  
Y1  
Fan  
G
G
R
2
4VAC Hot Heating  
Rh  
24VAC Hot Cooling  
Rc  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
24VAC Common  
C
C
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
OAT/RRS  
A09158  
Fig. 23 − Thermostat with Dry Contact Control for Run Time  
5
5
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WIRING DIAGRAMS(cont.)  
Thermostat  
Furnace  
Air Conditioner  
W2  
RVS/Heat Stage 2  
Heat Stage 1  
Compressor  
Not Used  
O/B W2  
W/W1  
Y/Y2  
Y1  
W/W1  
Y/Y2  
Y
R
Fan  
G
G
R
24VAC Hot Heating  
Rh  
24VAC Hot Cooling  
Rc  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
24VAC Common  
C
COM  
COM  
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
Outdoor Sensor *  
OAT/RRS  
Remote Room  
Sensor *  
*
Indicates connection may not be required/available.  
A09159  
Fig. 24 − 2−Stage Furnace with Air Conditioner  
HP Thermostat Configured as AC)  
(
5
6
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WIRING DIAGRAMS(cont.)  
Single-Stage  
Furnace  
Single-Stage  
Air Conditioner  
Thermostat  
RVS/Heat Stage 2  
Heat Stage 1  
Compressor Low  
Compressor High  
Fan  
O/B W2  
W/W1  
Y1  
W/W1  
Y/Y2  
G
Y/Y2  
G
Y
24VAC Hot Heating  
Rh  
R
24VAC Hot Cooling  
Rc  
R*  
Dry Contact 1  
D1  
Dry Contact 2  
D2  
24VAC Common  
C
COM  
COM  
Outdoor Air Temp  
Remote Room Sensor  
OAT/RRS Com  
OAT  
RRS  
Outdoor Sensor *  
OAT/RRS  
Remote Room  
Sensor *  
*
Indicates connection may not be required/available.  
NOTE: Rc/Rh jumper is cut on the Equipment Control Module.  
A09160  
Fig. 25 − Single−stageFurnace with Air Conditioner and Split Power  
5
7
THERMOSTAT CONFIGURATION RECORD  
Installer  
_
Model Number  
______________________________  
Date  
_________________________  
________________________  
A. Hardware Configuration  
_________ Seal Hole In Wall  
B. Mode Settings  
_
__________  
__________  
__________  
__________  
Mode (Off, Heat, Cool, Auto, Em Heat)  
Heating Setpoint Value  
Cooling Setpoint Value  
Fan (Auto or On)  
C. Home, Away, Sleep Settings  
Heat Cool  
Home  
____ ____  
____ ____  
____ ____  
Away  
Sleep  
D. Schedule (For Programmable Thermostats)  
Period 1 Period 2  
Period 3  
Period 4  
Time Heat Cool Time Heat Cool Time Heat Cool Time Heat Cool  
All Days  
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____  
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____  
____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____  
Weekdays  
Weekend  
5
8
E Configuration Options  
Equipment Type  
Option 01  
Option 02  
Option 03*  
Option 04  
Option 05  
Option 06  
Option 07  
Option 08  
Option 10  
_
_
_
_
_
_
_
_
_
_
____  
____  
____  
____  
____  
____  
____  
Clean Filter Timer Adjustment  
Fahrenheit/Centigrade Selection  
Fan (G) on with W/W1 Selection  
Room Air Temperature Sensing  
Cooling Lockout Below 55ꢂ F Selection (only available if outdoor air sensor is present)  
Zoning  
Auxiliary Heat Lockout Temperature Setting (only available when heat pump is used and when outdoor air  
____ temperature sensor is present)  
Reversing Valve  
____  
Option 11  
Option 12  
Option 13  
Adjustable Setpoint Deadband  
____  
_____ Smart Recovery (programmable models only)  
Room Air Temperature Offset Adjustment  
_
_
_
_
_
_
_
____  
____  
____  
____  
____  
____  
____  
Option 15  
Option 16  
Option 17  
Option 18*  
Option 19  
Option 20  
Enable Auto Mode  
Cycles Per Hour  
Time Between Stages  
Backlight Configuration  
Dry Contact (programmable models only)  
Outdoor Air Temperature Offset Adjustment  
5
9
E Configuration Options (cont)  
Keypad Lockout  
Option 21*  
Option 24*  
Option 25*  
Option 26  
Option 27  
Option 28  
Option 29  
Option 30*  
Option 31*  
Option 32  
Option 33  
Option 41  
Option 44  
_
_
_
_
_
_
_
_
_
_
_
_
_
____  
____  
____  
____  
____  
____  
____  
____  
____  
____  
____  
____  
____  
Programmable/Non-Programmable (programmable models only)  
Number of Programmable Periods Per Day (programmable models only)  
Minimum Cooling Setpoint  
Maximum Heating Setpoint  
UV Light Reminder  
Humidifier Pad Reminder  
Programmable Fan (programmable models only)  
Daylight Savings Time Configuration (programmable models only)  
Furnace Heat Staging  
Single or Two-Piece Installation  
Variable Speed Blower  
Super Comfort Heat  
*
Options with an asterisk can also be set/changed by the homeowner.  
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ꢄ
Printed in U.S.A.  
2009 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231  
Edition Date: 06/09  
Catalog No: IIT6-PAC-03  
Manufacturer reserves the right to change, at any time, specifications  
and designs without notice and without obligations.  
Replaces: IIT6-PAC-02  
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