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Equipment Control Module
Furnace
Heat Pump
O
RVS Cooling
O/B W2
W2
Heat Stage 3
(furnace)
W/W1
W/W1
W2**
Heat/Cool Stage 1
Y1 / W2
Y1
Heat/Cool Stage 2
Y/Y2
Y/Y2
Y/Y2
Fan
G
G
24VAC Hot Heating
Rh
R
R
24VAC Hot Cooling
Rc
Dry Contact 1
D1
Dry Contact 2
D2
DHUM
24VAC Common
C
COM
C
Humidify
HUM
Outdoor Air Temp
OAT
Remote Room Sensor
RRS
OAT/RRS Com
SRTN
Outdoor Sensor *
Humidifier Solenoid
Valve *
Remote Room
Sensor *
Y1
***
* Indicates connection may not be required/available.
** Some heat pumps may designate W1.
***Option 19 set to 2.
A09121
Fig. 31 -- Variable Speed, Multi--Stage, Stage Modulating and Single--Stage
Furnace with 2--Stage Heat Pump
Summary of Contents for A07048
Page 2: ......
Page 10: ...8 A13295 Fig 2 Coil Excess Wiring A07685 Fig 3 TP PRH A B Carton Contents ...
Page 15: ...13 A07225 Fig 5 Press Tabs to Remove Backplate A07226 Fig 6 Take Apart ...
Page 89: ...87 NOTES ...
Page 90: ...88 NOTES ...
Page 91: ......