TWO−STAGE INTEGRATED CONTROL BOARD
LEDs
DIP
SWITCHES
1 − 4
W915 FACTORY INSTALLED JUMPER
(MUST CLIP FOR 2 STAGE COOL)
THERMOSTAT CONNECTIONS (TB1)
DIP SWITCH(ES) | FUNCTION |
1 and 2 Blower Off Delay (Heating Mode)
3Second Stage ON Delay (Single−stage t’stat)
4 Blower Off Delay (Cooling Mode)
FIGURE 4
TABLE 3
Integrated Control Board Terminals
120VAC Neutral
LINE | Line |
|
|
XFMR | Transformer |
|
|
EAC | Electronic Air Cleaner |
|
|
CIRC | Indoor Blower |
|
|
HUM | Humidifier |
|
|
| 120VAC Line |
|
|
HUM | Humidifier |
|
|
XMFR | Transformer |
|
|
LINE | Line |
|
|
PARK | For Unused Leads |
|
|
COOL | Cooling Speed |
|
|
EAC | Electronic Air Cleaner |
|
|
HI HEAT | HIigh Heat Speed |
|
|
LO HEAT | Low Heat, Low Cool and Continuous Fan |
| Speed |
|
|
TABLE 4
Integrated Control Board 5 Pin Terminal
PIN # | Function |
|
|
1 | Ignitor |
2Combustion Air Inducer High Speed
3Combustion Air Inducer Low Speed
4 | Combustion Air Inducer Neutral |
|
|
5 | Ignitor Neutral |
|
|
TABLE 5
Integrated Control Board 12Pin Terminal
PIN # | Function |
|
|
1 | Gas Valve 2nd Stage (High Fire) |
|
|
2 | Second Stage Prove Switch |
|
|
3 | Not Used |
|
|
4 | Ground |
|
|
5 | 24V Hot |
|
|
6 | Primary Limit In |
|
|
7 | Gas Valve 1st stage (Low Fire) |
|
|
8 | Gas Valve Common |
|
|
9 | 24V Neutral |
|
|
10 | Ground |
|
|
11 | Primary Limit Out |
|
|
12 | 1st Stage Prove Switch |
|
|
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