
17
Rev. 1
SCHEMA
TICS
TO AVOID POSSIBLE ELECTRICAL SHOCK, PERSONAL INJURY,
OR DEATH, DISCONNECT THE POWER BEFORE SERVICING.
WARNING
!
GUID
HSI 1-1A INTEGRATED IGNITION CONTROL
This schematic is for reference only. Not all wiring is as shown above, refer
to the appropriate wiring diagram for the unit being serviced.
OPTIONAL
SENSOR
PARK
PARK
ELECTRONIC
AIR CLEANER
HUMIDIFIER
PRESSURE
SWITCH
AUX
LIMIT
PRIMARY
LIMIT
FLAME
TH
TR
RO1
HL1
PS
RO2
MV
MV
HLO
FP
COOL (Y)
HEAT (W)
24V POWER (R)
BLOWER (G)
TH
HLO
FP
ROLLOUT
SWITCH
RO2
RO1
PS
TR
MV
HL1
GND
MV
120V
24V
GAS VALVE
H
EAT
COO
L
TRANSFORMER
F+
F-
TX
LINE
PARK
PARK
HUM
EAC
XFMR
LINE
CIR
N
N
N
COOL
ACB
LOW
ACB
CN
1
N
N
R
G
W
Y
C
HUM
120VAC
HEAT
ACB
EAC
BLWR
CMB IGN
BLOWER
MOTOR
LINE
HOT
120 VAC
LINE
NEUTRAL
IGNITOR
GND
COMBUSTION
AIR BLOWER