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TABLE 1
4-Pin Terminal Designation
PIN #
FUNCTION
1
Combustion Air Inducer Line
2
Ignitor Line
3
Combustion Air Inducer Neutral
4
Ignitor Neutral
TABLE 2
12-Pin Terminal Designations
PIN #
FUNCTION
1
High Limit Output
2
Not Used
3
24V Line
4
Not Used
5
Rollout Switch Out
6
24V Neutral
7
High Limit Input
8
Ground
9
Gas Valve Common
10
Pressure Switch In
11
Rollout Switch In
12
Gas Valve Out
TABLE 3
1/4” QUICK CONNECT TERMINALS
120HUM
Humidifier 120VAC
LINE
120VAC
XFMR
Transformer 120VAC
CIRC
Indoor blower 120VAC
EAC
Indoor air quality accessory 120VAC
NEUTRALS
Common 120VAC
HUM24
Humidifier 24VAC
3/16” QUICK CONNECT TERMINALS
COOL
Cooling tap 24VAC
HEAT
Heating tap 24VAC
FAN
Continuous blower 24 VAC
PARK (no power)
Park terminal for speed taps
FS
Flame sense
24 COM
Common 24VAC
FIGURE 3
INTEGRATED CONTROL
(Automatic Hot Surface Ignition System)
BLOWER OFF DELAY
RED LED
RECALL BUTTON
