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3/16" QUICK CONNECT TERMINALS
FLAME SENSE SIGNAL
HI Cool 24VAC
HI HEAT 24VAC
LO COOL 24VAC
LO HEAT 24VAC
PAR
PAR
COMMON 24VAC
1/4" QUICK CONNECT TERMINALS
NEUTRALS = 120 NETURAL
HUM = UNPOWERED NORMALLY OPEN (DRY) CONTACTS
LI = 120 VAC INPUT TO CONTROL
ACC = 120 VAC OUTPUT TO OPTIONAL ACCESSORY
507582-02
THERMOSTAT CONNECTIONS (TB1)
DS = DEHUMIDIFICATION SIGNAL
W2 = HEAT DEMAND FROM 2ND STAGE T/STAT
W1 = HEAT DEMAND FROM 1ST STAGE T/STAT
R = CLASS 2 VOLTAGE TO THERMOG
G = MANUAL FSATNA FTROM
C = THERMOSTT'ASTT ASTIGNAL GROUND CONNECTED TO
TRANSFORMER GRD (TR) & CHASIS GROUND (GRD)
Y1 = THERMOSTAT 1ST STAGE COOL SIGNAL
Y2 = THERMOSTAT 2ND STAGE COOL SIGNAL
O = THERMOSTAT SIGNAL TO HEAT PUMP
REVERSING VALVE
L = NOT USED
DH = NOT USED
Figure 55
Issue 1621
Page 41 of 59
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