Carrier 48TC 17 Series Service And Maintenance Instructions page 47

Red LED-Status
TERMINAL LABEL
INPUTS
RT, C
SS
FS, T1
W
RS
LS
CS
OUTPUTS
L1, CM Induced draft combustion motor
IFO
GV
Fig. 59 − Integrated Gas Control (IGC) Board
Table 14 – IGC Connections
POINT DESCRIPTION
Input power from TRAN 1
Speed sensor
Flame sensor
Heat stage 1
Rollout switch
Limit switch
Centrifugal switch (not used)
Indoor fan
Gas valve (heat stage 1)
SENSOR LOCATION
control box
gas section
gas section
LCTB
gas section
fan section
—
gas section
control box
gas section
47
CONNECTION
TYPE OF I/O
PIN NUMBER
24 VAC —
analog input J1, 1‐3
switch input —
24 VAC J2, 2
switch input J2, 5‐6
switch input J2, 7‐8
switch input J2, 9‐10
line VAC
relay J2, 1
relay J2, 11‐12
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