Lennox G60UH Service Manual page 14

CONTROL BOARD 18M34
FACTORY−
INSTALLED
JUMPER
THERMOSTAT CONNECTIONS (TB1)
DIP SWITCH(ES)
1 and 2 Blower Off Delay (Heating Mode)
3 Second Stage ON Delay (Single−stage t'stat)
4 Blower Off Delay (Cooling Mode)
FIGURE 4
LEDs
DIP
SWITCHES
1 − 4
FUNCTION
Integrated Control Board Terminals
120VAC Neutral
LINE
XFMR
EAC
CIRC
HUM
HUM
XMFR
LINE
PARK
COOL
EAC
HI HEAT
LO HEAT
Integrated Control Board 5 Pin Terminal
PIN #
1
2
3
4
5
Integrated Control Board 12Pin Terminal
PIN #
1
2
3
4
5
6
7
8
9
10
11
12
Page 14
TABLE 3
Line
Transformer
Electronic Air Cleaner
Indoor Blower
Humidifier
120VAC Line
Humidifier
Transformer
Line
For Unused Leads
Cooling Speed
Electronic Air Cleaner
HIigh Heat Speed
Low Heat, Low Cool and Continuous Fan
Speed
TABLE 4
Function
Ignitor
Combustion Air Inducer High Speed
Combustion Air Inducer Low Speed
Combustion Air Inducer Neutral
Ignitor Neutral
TABLE 5
Function
Gas Valve 2nd Stage (High Fire)
Second Stage Prove Switch
Not Used
Ground
24V Hot
Primary Limit In
Gas Valve 1st stage (Low Fire)
Gas Valve Common
24V Neutral
Ground
Primary Limit Out
1st Stage Prove Switch