Page 18
INTEGRATED CONTROL
THERMOSTAT CONNECTIONS (TB1)
1/4" QUICK CONNECT TERMINALS
H= 24V HUMIDIFIER OUTPUT
L= LENNOX SYSTEM OPERATION MONITOR
NEUTRALS= 120 VAC NEUTRAL
FIGURE 4
+
FLAME
SENSE
COMBUSTION
AIR INDUCER
CONNECTOR
DIP SWITCHES
OUTDOOR AIR
SENSOR
TERMINALS
(Future Use)
DISCHARGE AIR
SENSOR
TERMINALS
(Future Use)
W915
W951
W914
ON−BOARD
LINKS
INDOOR
BLOWER
CONNECTOR
EAC
HUM
LINE VOLTAGE
TERMINALS
NEUTRAL
TERMINALS
IGNITOR
CONNECTOR
7−SEGMENT
DIAGNOSTIC LED
DIAGNOSTIC
PUSH BUTTON
FACTORY TEST
HEADER PINS.
FACTORY USE ONLY.
TABLE 12
SureLight Board
®
6 Pin Terminal Designation
PIN # Function
1 Data Input From Motor
2 Common
3 Furnace Size Resistor Input
4 Data Output To Motor
5 5 Volt Bias Supply
6 Furnace Size Resistor Input
TABLE 13
SureLight Board 12Pin Terminal Designation
PIN # Function
1 Not used
2 High Fire Pressure Switch
3 Rollout In
4 Ground
5 24V Hot
6 Primary Limit In
7 Gas Valve
8 Gas Valve Common
9 24V Neutral
10 Ground
11 Primary Limit Switch Out
12 Low Fire Pressure Switch
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