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XTS Series - 4" Tube Heater Installation, Operation, Maintenance and Parts Manual
Internal Wiring Diagrams
Standard Wiring
L1
120VAC
BK
BK
L1
120VAC
L2
W
If any of the original wire as supplied with the appliance must be replaced, it must be
replaced with wiring material having a temperature rating of at least 105°C.
LADDER DIAGRAM - MARK17DU-117 NO LIGHTS S-SW
BK
PRESSURE
SWITCH
BK
W
BR
IGNITOR
BLOCK DIAGRAM - MARK17DU-117 NO LIGHTS S-SW
BK
PRESSURE
BK
SWITCH
M
C
P
BK
M
1
C
2
P
3
NO
OFF
GAS VALVE
BLOWER
O
R
W
G
IGNITION MODULE
O
W
BK
W
R
1
W
2
3
G
5
L2
BK
GAS VALVE
W
BURNER
FLAME
IGNITOR
ROD
BK
BR
MARK 17DU-117
PROBE
SIC1
LINE1
TH
NEUT
IGNITION
VALVE
MODULE
NEUT
GND
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