Wiring Diagram
CAUTION
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
MARK
PART NAME
MS
MAIN SWITCH
R.TH
THERMISTOR
TF
THERMAL FUSE
F
FUSE
ER
ELECTRODE
POV
MODULATING SOLENOID
VALVE
TR
TRANSFORMER
FR
FLAME ROD
If any of the original wire as supplied with the
appliance must be replaced, it must be replaced with
type 18 AWG wire or its equivalent.
MARK
PART NAME
OH.TH
OVER HEAT THERMISTOR
OHS1, 2
OVER HEAT SWITCH 1, 2
FM
CONVECTION FAN MOTOR
SP
SPARKER
SV1, 2
MAIN SOLENOID VALVE 1, 2
BL
COMBUSTION FAN MOTOR
PS
PRESSURE SENSOR
W. TH
WALL THERMOSTAT
Rinnai Corporation EX17CT, EX22CT Manual
CODE
COLOR
bk
black
bl
blue
gr
green
gr/y
green/yellow
r
red
w
white
y
yellow
gy
gray
or
orange
br
brown
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