21
heater wiring
All electrical work must be installed in accordance with the latest version of the national electrical Code AnSI/nFPA no. 70 and
must conform to all local code authority having jurisdiction. An eleCTrICAl GrOUnD IS reqUIreD TO reDUCe rISK OF
eleCTrICAl SHOCK Or POSSIble eleCTrOCUTIOn.
The controls of this water heater are polarity sensitive. be certain to properly wire the hot and neutral connections.
24
V
24
V
(GND
)
GND
PV
MV/P
V
MV
SPARK
4
2
BK
BK
R
R
R
R
LOWER
PROBE
UPPER
PROBE
THERMOSTAT
BLOWER
PRESSURE
SWITCH
1a
1b
1
120 VAC HOT
120 VAC NUETRAL
EARTH GROUND
PILOT
IGNITION MODULE
GAS VALVE
BLOWER
FACTORY INSTALLED
BY INSTALLER
POWER RELAY
IF ANY OF THE ORIGINAL WIRE AS SUPPLIED MUST BE REPLACED US ONLY 18 AWG
105
C 600V UL AWM STYLE #1015 WIRE EXCEPT GAS VALVE CABLE WHICH MUST USE
2 CONDUCTOR 18 AWG 80
C 300V UL CATEGORY QPTZ POWER LIMITED CIRCUIT CABLE
327382-000 REV. 00
R
R
R
BLK
W
W
BL
K
W
LEGEND:
R= RED
W= WHITE
BLK= BLACK
Y= YELLOW
Y
M
P
BLUE
BLK
LOW GAS
PRESSURE
SWITCH
(SELECT MODELS)
figure 20.
wiring diagram
