Carrier N4A7 - Frequency of Maintenance; Thermidistat Wiring with 2-Stage R-410 A Refrigerant Air Conditioner

7
Frequency of maintenance may vary depending upon geographic
areas, such as coastal applications. See Owner’ s Manual for
information.
A09276 A09277
RVS/Heat Stage 2 O/W2/B
Heat Stage 1 W/W1
Compressor Low Y1
Compressor High Y/Y2
Fan G
24VAC Hot Heating Rh
24VAC Hot Cooling Rc
Dry Contact 1 D1
Dry Contact 2 D2
24VAC Common C
Humidify HUM
Outdoor Air Temp OAT
Remote Room Sensor RRS
OAT/RRS Return
SRTN
SRTN
Outdoor Sensor
Humidifier Solenoid
Valve
Remote Room
Sensor
O
Y1
W1
G
W2
C
Y2
Y1
Y/Y2
R
C
DH
REMOVE J2
JUMPER FOR
HEAT STAGING
REMOVE J1 FOR
DEHUMIDIFY
MODES
Two-Stage
Air Conditione
r
Thermidistat
Variable Speed
Fan Coil
TWO-STAGE
AIR CONDITIONER
THERMIDISTAT
Thermidistat w/ Va r iable Speed Fan Coil
& 2 - Stage Ai r Conditioner
Thermidistat w/ Variable Speed Furnace
& 2 - Stage Ai r Conditioner
Fig. 6 - Thermidistat Wiring with 2- Stage R- 410A refrigerant Air Conditioner
A09278
Single Stage Furnace with 2- Stage Air Conditioner
A09279
2- Stage Thermostat with Single- Stage Furnace and
2 - Stage Air Conditioner
HUMIDFIER
(24VAC)
Fig. 7 - Generic Wiring Diagrams
(See Thermostat Installation Instruction for specific unit combinations)
LEGEND
24v Factory Wiring
24v Field Wiring
Field Splice Connection
A09306