TWO−STAGE INTEGRATED CONTROL BOARD
DIAGNOSTIC
LEDs
DIP
SWITCHES
W915
W951
1/4" QUICK CONNECT TERMINALS
SENSE = 120 VAC OUTPUT TO FLAME SENSER
NEUTRALS= 120 VAC NEUTRAL
PARK = DEAD TERMINAL FOR UNUSED BLOWER LEAD
HEAT LOW = 120 VAC OUTPUT TO CIRC BLWR −− LOW HT SPEED AND CONTINUOUS FAN
HEAT HIGH/ COOL LOW = 120 VAC OUTPUT TO CIRC BLWR −− HIGH HEAT AND LOW COOL SPEED
COOL HIGH = 120 VAC OUTPUT TO CIRC BLWR −− HIGH COOL SPEED
THERMOSTAT CONNECTIONS (TB1)
ON−BOARD
JUMPERS
1= ERROR CODE RECALL H= 24V HUMIDIFIER OUTPUT L= DO NOT USE
| DIP SWITCH FUNCTIONS |
|
|
DIP SWITCH(ES) | FUNCTION |
|
|
1 −− 2 Stage T’stat | Selects t/stat type (single or two−stage) |
2 −− 2nd Stage Delay | Second stage ON delay (single−stage t’stat) |
3 & 4 −− Heat Off Delay | Heating fan OFF delay |
5 −− Cool Off Delay | Cooling fan OFF delay |
FIGURE 52
Page 39
