Installation Sheet

Rinnai Corporation EX17CT, EX22CT Manual 35
Wiring Diagram
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.
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
CAUTION
CODE COLOR
bk black
bl blue
gr green
gr/y green/yellow
r red
w white
y yellow
gy gray
or orange
br brown
MARK PART NAME MARK PART NAME
MS MAIN SWITCH OH.TH OVER HEAT THERMISTOR
R.TH THERMISTOR OHS1, 2 OVER HEAT SWITCH 1, 2
TF THERMAL FUSE FM CONVECTION FAN MOTOR
F FUSE SP SPARKER
ER ELECTRODE SV1, 2 MAIN SOLENOID VALVE 1, 2
POV MODULATING SOLENOID
VALVE
BL COMBUSTION FAN MOTOR
TR TRANSFORMER PS PRESSURE SENSOR
FR FLAME ROD W. TH WALL THERMOSTAT