lp-441 Rev. 004 Rel. 000 Date 7.2.21
31
D. Internal Wiring Diagram
INTERNAL CONNECTION DIAGRAM
X5-2
X5-1
X5-7
X5-8
X4-2
X4-1
X4-5
X4-4
X4-6
X4-7
GREEN/WHITE
GREEN
UPPER TEMP SENSOR 1
GREY
HIGH FLUE TEMPERATURE SWITCH
PINK
ORANGE
RED
PINK
WHITE
BLACK
GREY/WHITE
X4-3
GROUND
BLOWER TACH
BLOWER 24VDC
BLOWER PWM
BLACK
GREEN
COMBUSTION
BLOWER
GAS VALVE
X5-4
X5-3
UPPER TEMP SENSOR 2
YELLOW
YELLOW/WHITE
BLOCKED VENT PRESSURE SWITCH
X3-2
X3-1
GREY/WHITE
GREY
BLACK/WHITE
BLACK
OUTDOOR SENSOR (OPT)
X3-7
X3-8
X
11-4
X
11-3
WHITE
FAN NEUTRAL
FAN HOT
X
12-2
X
12-1
120V LINE
120V NEUTRAL
BLACK
WHITE
Figure 21 - Internal Wiring Diagram