24
RMOD TERMINAL DIAGRAM
LEGEND
LEAVING AIR TEMPERATURE DISPLAY, TO DISPLAY RETURN TEMP,
HOLD BOTH HEAT/COOL BUTTONS
SENSOR CALIBRATION:
MAIN CONTROL CHIP
2-PIN SELECTABLE HEAT PUMP/GAS ELECTRIC (JUMPED FOR HEAT PUMP)
O/B MODE SELECT (JUMPED “O” OUTPUT IN COOLING)
FAN JUMPER:
CENTER AND TOP = ON
CENTER AND BOTTOM = AUTO FAN
EMERGENCY HEAT SWITCH, USED IN HP MODE ONLY
TO HVAC UNIT TERMINALS
ON/OFF SWITCH
SENSOR TERMINALS RA AND LV AIR MUST BE INSTALLED.
STATUS LEDs - PWR1, Y1, Y2, W1 and O/B, W2, G
3
4
5
6
7
8
10
9
11
TERMINAL DESIGNATIONS
TX
– Data transmit
RX
– Data receive
RA
– Return air sensor
Gas/Electric
G
– Fan output
W2
– Stage 2 heat output
W1
– Stage 1 heat output
Y2
– Stage 2 cool output
Y1
– Stage 1 cool output
R
– 24vac from HVAC unit transformer
Heat Pump
G
– Fan output
W2
– Aux heat output
O/B
– Reversing valve signal
Y2
– Stage 2 compressor
Y1
– Stage 1 compressor
R
– 24vac from HVAC unit transformer
R52 SUPPLY AIR TEMP
R45 RETURN AIR TEMP
1
2
R45
– RA calibration
R52
– LV AIR calibration
LV AIR
– Supply Air sensor input
R
– 24vac power input
C
– 24vac power common
HEAT (UP) / COOL (DN) / ADDRESS BUTTON
