78
Table 55 — 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
MBB
24 VAC
J2, 2
RS
Rollout switch
gas section
switch input
J2, 5-6
LS
Limit switch
gas 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
MBB
relay
J2, 1
GV
Gas valve (heat stage 1)
gas section
relay
J2, 11-12
RED LED-STATUS
Fig. 24 — Integrated Gas Control (IGC) Board
a48-7827
Содержание 48PG24
Страница 68: ...68 Fig 14 Low Voltage Control Schematic 48PG20 28 Units without Humidi MiZer System a48 7627...
Страница 69: ...69 Fig 15 Low Voltage Control Schematic 48PG20 28 Units with Humidi MiZer System a48 8227...
Страница 70: ...70 Fig 16 Low Voltage Control Schematic 50PG20 28 Units without Humidi MiZer System a48 7778...
Страница 71: ...71 Fig 17 Low Voltage Control Schematic 50PG20 28 Units with Humidi MiZer System a50 8101...
Страница 72: ...72 Fig 18 Power Schematic Units without Humidi MiZer System a48 7628...
Страница 73: ...73 Fig 19 Power Schematic Units with Humidi MiZer System a48 8228...
Страница 74: ...74 Fig 20 Component Arrangement Units without Humidi MiZer System a48 8229...
Страница 75: ...75 Fig 21 Component Arrangement Units with Humidi MiZer System a48 8230...
Страница 105: ......