Bryant IIT2-WHS-02 User manual

Installation Instructions
T2--WHS01
Legacy™Line Wi--FirThermostat
NOTE: Read the entire instruction manual before starting the installation.

TABLE OF CONTENTS
PAGE
GETTING STARTED 1...........................................
Safety Considerations 1...........................................
Before You Begin 2..............................................
HVAC System Compatibility Information 3...........................
Approvals 4....................................................
FCC Compliance Statement 4......................................
Specifications 6.................................................
Wiring Requirements 7...........................................
INSTALLATION 8...............................................
Step 1. Power Off HVAC Equipment 8...............................
Step 2. Remove Existing Thermostat 8...............................
Step 3. Install the Thermostat 8.....................................
Step 4. Connect the Wiring 10......................................
Step 5. Power On the HVAC Equipment 20...........................
NAVIGATING THE MENUS 21....................................
CONFIGURING THE THERMOSTAT 23............................
Equipment 23..................................................
Thresholds 25..................................................
Test Equipment 28..............................................
Reset HVAC Equipment Settings 29.................................
Performing a Hardware Reset 29...................................
Rebooting the thermostat 29.......................................
Configuring Reminders and Alerts 30................................
Alerts 31......................................................
List of Alerts 32................................................

1
GETTING STARTED
Safety Considerations
Improper installation, adjustment, alteration, service, maintenance, or use
can cause explosion, fire, electrical shock, or other conditions which may
cause death, personal injury or property damage. Consult a qualified
installer, service agency or your distributor or branch for information or
assistance. The qualified installer or agency must use factory--authorized
kits or accessories when modifying this HVAC system. Refer to the
individual instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings and cautions included in literature
and attached to the unit. Consult local building codes and the current
edition of the National Electrical Code (NEC) NFPA 70. In Canada, refer
to the current editions of the Canadian Electrical Code CSA C22.1.
Recognize safety information. When you see this symbol on the unit
and in instructions or manuals, 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 hazards, 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.

2
Before You Begin
This product is intended to be installed by trained service professionals.
This manual explains the procedures for installing the BryantLegacyt
Line Wi--Fi Thermostat. Please read it carefully before beginning the
installation.
For information on how to operate the Legacy Line Wi--Fi Thermostat,
please see the Legacy Line Wi--Fi Thermostat Owner’s Manual.
The Legacy Line Wi--Fi Thermostat is designed to be mounted on the
homeowner’s wall in a convenient location.
A13336
PERSONAL INJURY HAZARD
Disconnect electric power to the HVAC system before
installing this product. Failure to do so could result in electric
shock and/or equipment damage.
All wiring must conform to your local electrical code.
Mercury Notice: This product does not contain mercury. If
you are replacing a product that does contain mercury, contact
your local waste--management authority for disposal
instructions. Do not discard the old product in the regular
trash.
CAUTION
!

3
HVAC System Compatibility Information
The Legacy Line Wi--Fi Thermostat is designed to operate with
low--voltage heating and cooling systems. It is not designed for use with
line--voltage or millivolt heating and cooling systems.
The Legacy Line Wi--Fi Thermostat supports:
dUp to 2 heat and 2 cool stages on a conventional system.
dUp to 3 heat and 2 cool stages on a heat pump system.
The Legacy Line Wi--Fi Thermostat supports the following equipment:
Equipment Supported?
Gas / Oil / Electric heating
(uptotwostages)
YES
Heat pump with auxiliary heat
(up to three stages)
YES
Geothermal Heat Pump YES
Dual fuel systems YES
Standard electric cooling
(uptotwostages)
YES
Boilers YES

4
Approvals
This product was designed and built in accordance to RoHS directive
2002/95/EC and contains no hazardous substances as defined by this
directive.
Federal Communications Commission (FCC)
Compliance Notice:
This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
dReorient or relocate the receiving antenna.
dIncrease the separation between the equipment and receiver.
dConnect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
dConsult the dealer or an experienced radio/TV technician for
help.
This device complies with part 15 of FCC rules. Operation is subject to
the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received, including inter-
ference that may cause undesired operation.
Change or modifications that are not expressly approved by the
manufacturer could void the user’s authority to operate the equipment.

5
RF Exposure Information
This equipment complies with FCC radiation exposure limits set forth for
an uncontrolled environment. In order to avoid the possibility of
exceeding the FCC radio frequency exposure limits, human proximity to
the antenna shall not be less than 20cm during normal operation.
Industry Canada (IC)
Compliance Notice:
This device complies with Industry Canada license--exempt RSS
standard(s).
Operation is subject to the following two conditions:
1. This device may not cause interference, and
2. This device must accept any interference, including interference
that may cause undesired operation of the device.
This Class B digital apparatus complies with Canadian ICES--003.
RF Exposure Statement:
This equipment complies with IC RSS--102 radiation exposure limits set
forth for an uncontrolled environment. This transmitter must be installed
to provide a separation distance of at least 20 cm from all persons and
must not be collocated or operating in conjunction with any other
antenna or transmitter.

6
Specifications
Temperature Ranges
Heat: 50to88°F (10 to 31°C) by default,
adjustable from 50 to 90°F (10 to 32°C)
Cool: 52to90°F(11to32°C) by default,
adjustable from 50 to 90°F (10 to 32°C)
Display: 40 to 100°F(5to37°C)
Sensitivity: +/-- 1°F(0.5°C)
Operating 32 to 130°F(0to55°C)
Humidity Range
Display: 20 to 90% R.H.
Sensitivity: +/-- 5% R.H.
Operating: 5 to 95% R.H. (non--condensing)
Dimensions
Thermostat: 5.5” W x 3.25” H x 1” D
(139.5mm W x 82.5mm H x 25mm D)
Power Consumption
24VAC (3VA maximum)

7
Wiring Requirements
The following table shows the maximum wire lengths allowed:
Thermostat to HVAC Equipment
18 AWG 20 AWG 22 AWG
128 ft (380m) 80 ft (240m) 50 ft (150m)
Terminal Description and Electrical Ratings
Terminal Description Voltage Current (Max)
N/C Unused N/A N/A
Y 1st Stage Compressor 24V AC 2A
W(O/B) 1st Stage Heating or
Reversing Valve
Changeover
24V AC 2A
GFan 24V AC 2A
CCommon 24V AC 2A
Y2 2nd Stage Compressor 24V AC 2A
W2 (AUX) 2nd Stage Heating or
1st Stage Aux Heat
24V AC 2A
NOTE: Factory jumper installed between RC and RH. Remove jumper for
2--transformer applications. See wiring diagrams for additional information.

8
INSTALLATION
There are 5 steps to install the thermostat:
Step 1 — Power Off HVAC Equipment
Step 2 — Remove Existing Thermostat
Step 3 — Install the Wi--Fi Thermostat
Step 4 — Connect the Wiring
Step 5 — Power On HVAC Equipment
Step 1. Power Off HVAC Equipment
Before disconnecting the existing thermostat, or installing the Legacy
Line Wi--Fi Thermostat, disconnect the power to the heating and air
conditioning equipment.
Step 2. Remove Existing Thermostat
Disconnect the wires to the existing thermostat and remove it from the
wall.
Step 3. Install the Legacy Line Wi--Fi Thermostat
The ideal location for the thermostat is approximately 5 ft (1.5 m) above
floor level in the main living area.
Do not install the thermostat:
dClose to sources of heat such as incandescent lights
dNear supply heating/cooling sources
dIn direct sunlight
dOn exterior, non--insulated or poorly insulated walls
dIn the kitchen or other areas of potentially high heat and/or hu-
midity
dIn an area that could restrict air flow

9
To install the thermostat:
3. Gently separate the backplate from the thermostat.
4. Place the thermostat backplate on the wall. Make sure that any ex-
isting wires can be inserted through the opening on the backplate.
5. Using the backplate as a template, mark the location of the mount-
ing holes on the wall as shown below.
YN/C
W
O/B
GRCRHCY2
W2
AUX
A13338
Fig. 1 -- The solid color indicates mounting holes
6. Move the backplate out of the way and make holes where indicat-
ed in Step 3. The mounting holes can accommodate a #6 pan--
head screw. It is recommended to use the included fasteners to en-
sure proper fitting of the front housing.
7. Use the included drywall plugs (or other suitable anchors) to en-
sure the thermostat can be mounted securely to the wall.
8. Fasten the backplate to the wall using the screws provided (or oth-
er suitable screws).

10
Step 4. Connect the Wiring
You need to use low--voltage cable to connect the thermostat to the
HVAC equipment. Check the wiring diagrams on the proceeding pages
for the number of wires required.
NOTE: There is a factory installed jumper between R/H and R/C.
Ensure any unused wires do not have exposed bare copper conductors.
To connect the thermostat to the equipment:
1. Connect the wires as shown in the wiring diagrams.
2. Attach the The Legacy Line Wi--Fi Thermostat to the backplate.
Ensure that the pins on the thermostat align with the terminal
block on the backplate.
Wiring Diagrams
The following diagrams show how to connect the thermostat terminals to
various HVAC equipment.

11
YN/C
W
O/B
GRCRHCY2
W2
AUX
1-stage AC
C
24V
Y
G
R
W
C
HUM
1-stage Furnace
A13339
Fig. 2 -- Single Stage Heat / Cool

12
2-stage AC
Y2
R
C
Y1
Y
G
R
W
C
HUM
1-stage Furnace
YN/C
W
O/B
GRCRHCY2
W2
AUX
Y2
*
*Y2, HUM connections on furnace may not be available
*
A13340
Fig. 3 -- Single Stage Heat, Dual Stage Cool

13
YN/C
W
O/B
GRCRHCY2
W2
AUX
Y1
G
W2
W1
HUM
C
R
Y2
2-stage Furnace
1-stage AC
C
24V
A13341
Fig. 4 -- Dual Stage Heat, Single Stage Cool

14
YN/C
W
O/B
GRCRHCY2
W2
AUX
Y1
G
W2
W1
HUM
C
R
Y2
2-stage Furnace
2-stage AC
Y2
R
C
Y1
A13342
Fig. 5 -- Dual Stage Heat, Dual Stage Cool

15
YN/C
W
O/B
GRCRHCY2
W2
AUX
O
W
Y/Y2
C
G
R
Fan Coil
1-stage Heat Pump
W2
R
Y
C
O
A13343
Fig. 6 -- Single Stage Heat Pump with Auxiliary Heat

16
YN/C
W
O/B
GRCRHCY2
W2
AUX
O
W
Y1
C
G
R
Fan Coil
2-stage Heat Pump
W2
Y1
R
Y2
C
O
Y2
*
*Y2 connection on fan coil may not be available
A13344
Fig. 7 -- Dual Stage Heat Pump with Auxiliary Heat

17
YN/C
W
O/B
GRCRHCY2
W2
AUX
1-stage AC
C
24V
Boiler
C
R
W
Y1
R
C
Y2
G
Fan Coil
* Remove RH/RC factory jumper
C terminal to be connected to heating
transformer common
A13345
Fig. 8 -- Boiler with Fan Coil and Single Stage Cool

18
YN/C
W
O/B
GRCRHCY2
W2
AUX
1-stage AC
C
24V
2-stage Boiler
C
W2
R
W1
Y1
R
C
Y2
G
Fan Coil
* Remove RH/RC factory jumper
C terminal to be connected to heating
transformer common
A13346
Fig. 9 -- Dual Stage Boiler with Fan Coil and Single Stage Cool