508433-01 Issue 2345 Page 15 of 70
Figure 4. Integrated Control
Flame Sense
S4 DIP Switches
24VAC Indoor
Blower Terminals
HUM
ACC
Ignitor and Combustion
Air Inducer
Neutrals
On Board Links
LED
Diagnostic Push
Button
3/16” QUICK CONNECT TERMINALS
FLAME SENSE SIGNAL
HI COOL 24VAC
LO COOL 24VAC
LO HEAT 24VAC
PARK
PARK
COMMON 24VAC
1/4” QUICK CONNECT TERMINALS
NEUTRALS = 120 VAC NEUTRAL
HUM = UNPOWERED NORMALLY OPEN (DRY) CONTACTS
LI = 120VAC INPUT TO CONTROL
CC = 120VAC OUTPUT TO OPTIONAL ACCESSORY
THERMOSTAT CONNECTIONS (TB1)
DS = DEHUMIDIFICATION SIGNAL
W2 = HEAT DEMAND FROM 2ND STAGE TSTAT
W1 = HEAT DEMAND FROM 1ST STAGE TSTAT
R = CLASS 2 VOLTAGE TO TSTAT
G = MANUAL FAN FROM TSTAT
C = TSTAT SIGNAL GROUND CONNECTED TO
TRANSFORMER GRD (TR) & CHASSIS GROUND (GRD)
Y1 = TSTAT 1ST STAGE COOL SIGNAL
Y2 = TSTAT 2ND STAGE COOL SIGNAL
O = TSTAT SIGNAL TO HEAT PUMP REVERSING VALVE
DH = NOT USED
L = NOT USED
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