4 5
REMOTE TEMPERATURE SENSOR (OPTIONAL)
A remote temperature sensor can be used for control if the thermostat is to be mounted in a concealed location
or a remote sensor can be averaged with the thermostat sensor to control a large space. An 8051 flush mount
or 8053 surface mount remote temperature sensor can be attached to the T1 and T2 terminals and mounted in a
recommended area. The remote sensor must be enabled in the installer setup menu, and once enabled will override
or be averaged with the thermostat’s internal temperature sensor, based on the setting.
Remote temperature sensor should
be mounted:
• On an interior wall, in a frequently
occupied space.
• Approximately 5‘ above floor.
• At least 18” from outside wall.
• Using less than 300’ of wire.
Do not mount remote sensor:
• Behind doors, in corners or other dead
air spaces.
• In direct sunlight, near lighting fixtures,
or other appliances that give off heat.
• On an outside or unconditioned area wall.
• In the flow of a supply register, in stairwells,
or near outside doors.
• On a wall with concealed pipes or ductwork.
• Near 120 VAC lines.
INSTALLATION
90-2124
SUPPORT MODULE WIRING (OPTIONAL)
3
T1
T2
B
A
C
RC
T3
T2T1
RSARSB
T4
MODEL 8081 OR 8082
SUPPORT MODULE
2
1
Up to 4 support modules can be wired for remote
sensing of temperature and/or humidity. Each sensor
can be configured for control or monitoring.
Note: Support modules should be wired with CAT-5
wire. The total length of wire for all support modules
should not exceed 1000 feet.
90-2169
INSTALLATION
EQUIPMENT CONTROL MODULE WIRING
Wire specifications:
18-24 gauge thermostat wire
Installation notes:
• Ensure power at the HVAC equipment is off.
• Loosen screw terminals, insert stripped wire
and re-tighten.
• Use zip tie to route wiring through the wiring
channels.
1 – Connection to terminal 1 at thermostat
2 – Connection to terminal 2 at thermostat
3 – Connection to terminal 3 at thermostat
RAT – Return air temperature sensor (optional)
LAT – Leaving air temperature sensor (optional)
ODT – Outdoor temperature sensor (included)
C – 24VAC common
R – 24VAC
RC – 24VAC cooling
RH – 24VAC heating
W – First stage heat (conventional)/auxiliary (heat pump)
W2 – Second stage heat (conventional)/ auxiliary (heat
pump)
W3/B – Third stage heat (conventional)/reversing valve
(heat pump)
Y – First stage cooling (conventional)/first stage compressor
(heat pump)
Y2 – Second stage cooling (conventional)/second stage
compressor (heat pump).
Y3/0 – Third stage cooling (conventional)/reversing valve
(heat pump)
G – Fan
L – System fault indicator (heat pump only) (optional)
C
EQ – 24VAC common from heat pump for system fault
indicator (optional)
HUM – Humidifier
DHno & DHcom – Normally open dehumidifier control
DHnc & DHcom – Normally closed dehumidifier control
VENT – Ventilation
EAC – Electronic Air Cleaner
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