49
Red LED-Status
C08452
Fig. 61 -- Integrated Gas Control (IGC) Board
Table 13 – IGC Connections
TERMINAL LABEL
POINT DESCRIPTION
SENSOR LOCATION
TYPE OF I/O
CONNECTION
PIN NUMBER
INPUTS
RT, C
Input power from TRAN 1
control box
24 VAC
—
SS
Speed sensor
gas section
analog input
J1, 1-3
FS, T1
Flame sensor
gas section
switch input
—
W
Heat stage 1
LCTB
24 VAC
J2, 2
RS
Rollout switch
gas section
switch input
J2, 5-6
LS
Limit switch
fan section
switch input
J2, 7-8
CS
Centrifugal switch (not used)
—
switch input
J2, 9-10
OUTPUTS
L1, CM
Induced draft combustion motor
gas section
line VAC
IFO
Indoor fan
control box
relay
J2, 1
GV
Gas valve (heat stage 1)
gas section
relay
J2, 11-12
48H
C
Summary of Contents for 48HC D17 Series
Page 77: ...77 APPENDIX IV WIRING DIAGRAMS C12616 Fig 77 48HC D17 D28 Power Diagram 208 230 3 60 48HC...
Page 78: ...78 APPENDIX IV WIRING DIAGRAMS C12617 Fig 78 48HC D17 D28 Power Diagram 460 3 60 48HC...
Page 79: ...79 APPENDIX IV WIRING DIAGRAMS C12618 Fig 79 48HC D17 D28 Power Diagram 575 3 60 48HC...
Page 86: ...86 APPENDIX IV WIRING DIAGRAMS C13767 Fig 86 RTU OPEN Wiring Diagram 48HC...
Page 87: ...87 APPENDIX IV WIRING DIAGRAMS C13768 Fig 87 RTU OPEN Wiring Diagram with Humidi MiZer 48HC...
