Safety Considerations; Installation Considerations; Install Thermostat - Bryant TSTAT Homeowner's Manual

Installation, Start-Up, and Operating Instructions
NOTE: Read the entire instruction manual before starting the
installation.

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 installa-
tion may damage thermostat.
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 CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER 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 would result in minor personal
injury or product and property damage.
INTRODUCTION
The Standard Programmable Thermostat is an electronic 24-vac,
manual changeover wall mount thermostat. This thermostat uses
two set points to maintain and control room temperature in both
the heating and air conditioning modes. The thermostat is designed
to maintain +/- 2°F accuracy. No batteries are required; tempera-
ture, fan, mode, and installer configuration settings are preserved
with power off.

INSTALLATION CONSIDERATIONS

A. Air Conditioner Model
The Standard Programmable AC (air conditioner) thermostat may
be wired with or without connecting a common wire between the
indoor equipment and the thermostat. However, it is recommended
to use a common wire whenever possible. Without a common wire
this thermostat becomes "power stealing." This means it will need
to steal a small amount of power from the equipment to which it
is connected. When "power stealing" connection is used, the
supplied 270 ohm resistor must be connected at the indoor unit.
(See Fig. 2, 3, and 5 and notes.)
NOTE: All Bryant equipment, with the exception of the Thermo-
stat Conversion Kit, TSTATXXCNV10, is compatible with this
thermostat in both power stealing and non-power stealing connec-
tions.
B. Heat Pump Model
The Standard Programmable HP (heat pump) thermostat is not
power stealing and MUST have both R and C wires connected to
operate properly. This thermostat uses a green LED to indicate
auxiliary heat and emergency heat operation.
INSTALLATION
I. THERMOSTAT LOCATION
Thermostat should be mounted:
• Approximately 5 ft (1.5m) from floor.
• Close to or in a frequently used room, preferably on an inside
partitioning wall.
• On a section of wall without pipes or duct work.
Thermostat 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 and heat from a lamp, sun, fireplace, or
other heat-radiating object which may cause a false reading.
• Close to or in direct airflow from supply registers and return-air
grilles.
• In areas with poor air circulation, such as behind a door or in
an alcove.
II. INSTALL THERMOSTAT
WARNING: Before installing thermostat, turn off all
power to unit. There may be more than 1 disconnect.
Electrical shock can cause personal injury or death.
.
1. Turn OFF all power to unit.
2. If an existing thermostat is being replaced:
a. Remove existing thermostat from wall.
b. Disconnect wires from existing thermostat, one at a time.
Be careful not to allow wires to fall back into wall.
c. As each wire is disconnected, record wire color and
terminal marking.
d. Discard or recycle old thermostat.
NOTE: Mercury is a hazardous waste and MUST be disposed of
properly.
3. Separate front and back plastic assembly of thermostat.
4. Route thermostat wires through hole in mounting base.
Level mounting base against wall (for aesthetic value only,
thermostat need not be leveled for proper operation) and
mark wall through 2 mounting holes.
5. Drill two 3/16-in. mounting holes in wall where marked.
6. Secure back plate to wall with 2 anchors and screws
provided making sure all wires extend through hole in
plastic.
7. Connect wires to proper terminal location on backplate.
8. Push any excess wire back into wall. Seal hole in wall to
prevent air leaks. Leaks can affect thermostat operation.
Any excess wire left inside thermostat casing may also
affect thermostat operation by interfering with airflow
across the temperature sensor.
9. Snap thermostat together making sure assembly is secure.
10. If "power stealing" connection is used, be sure to attach 270
ohm resistor at indoor unit. (See Fig. 2, 3, and 5 and notes.)
11. Turn ON power to unit.
On power up, depending on the thermostat model being used, the
LCD readout will display either, AC for air conditioner model
(1-stage heat/1-stage cool), or HP for heat pump model (2-stage
heat/1-stage cool).
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