International comfort products F9MXE0401410A Service And Technical Support Manual page 7

SERVICE AND TECHNICAL SUPPORT MANUAL
Figure 4 Example of Single Stage Furnace Control for ECM Blower Motor
24−V THERMOSTAT
TERMINALS
3−AMP FUSE
LED OPERATION &
DIAGNOSTIC LIGHT
HEAT
COOL
BLOWER SPEED
FAN
SELECTION TERMINALS
SPARE2
SPARE1
115−VAC (L2) NEUTRAL
CONNECTIONS
440 04 4311 08
HEAT OFF−DELAY
HUM
24VAC
COM/BLUE 24VAC/RED
COM
HEAT
COOL
FAN
SPARE 2
SPARE 1
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Ï Ï Ï Ï Ï Ï
Ï Ï Ï Ï Ï Ï Ï Ï Ï Ï Ï Ï
Ï Ï Ï Ï Ï Ï Ï Ï
L1
115 VAC (L1)
CONNECTIONS
Specifications subject to change without notice.
TWINNING AND/OR
COMPONENT TEST
TERMINAL
HUMIDIFIER TERMINAL
(24−VAC 0.5 AMP MAX)
TRANSFORMER 24VAC
CONNECTIONS
P1 − LOW VOLTAGE MAIN
HARNESS CONNECTOR
EAC
1 AMP
XFMR
BL−1
IND HSI
EAC TERMINAL
P2−HOT SURFACE IGNITOR (HSI) &
(115 VAC 1.0 AMP MAX.)
INDUCER MOTOR (IND) CONNECTOR
Gas Furnace: (F/G)9MXE
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