International comfort products N9MSB0401410A Service And Technical Support Manual page 7

SERVICE AND TECHNICAL SUPPORT MANUAL
Figure 4 Example of Single Stage Furnace Control for PSC Blower Motor
J2 JUMPER
24 V THERMOSTAT
TERMINALS
3 AMP FUSE
LED OPERATION &
DIAGNOSTIC LIGHT
115 VAC (L2) NEUTRAL
CONNECTIONS
BLOWER SPEED
SELECTION TERMINALS
440 04 4411 03
HEAT
TWINNING AND/OR
OFF DELAY
COMPONENT TEST
HUM
24VAC
COM/BLUE 24VAC/RED
Ï Ï Ï
Ï Ï Ï
Ï Ï Ï
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SPARE1 SPARE2 SPARE3
115 VAC
SPARE1
(L1) LINE
SPARE2
VOLTAGE
SPARE3
CONNECTION
Specifications subject to change without notice.
TERMINAL
HUMIDIFIER TERMINAL
(24 VAC 0.5 AMP MAX)
TRANSFORMER 24 VAC
CONNECTIONS
P1 LOW VOLTAGE MAIN
HARNESS CONNECTOR
EAC 1 AMP
IND
HUM
XFMR
HUMIDIFIER
TERMINAL
115 VAC
Gas Furnace: N9MSB
P2
HSI
P2 HOT SURFACE IGNITOR (HSI) & INDUCER
MOTOR (IND) CONNECTOR
L11F090
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