Internal Wiring Diagram; Part 7 - Gas Connections - Westinghouse WGR-076 Series Installation, Start-Up, Maintenance, Parts, Warranty

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D. Internal Wiring Diagram
120V NEUTRAL WHITE
120V LINE BLACK
Figure 19 - Internal Wiring Diagram

Part 7 - Gas Connections

Failure to follow all precautions could result in fire, explosion,
severe injury, or death.
Ensure the gas on which the water heater will operate is the
same type specified on the rating plate. Failure to do so could
result in water heater malfunction, property damage, personal
injury, or death.
The gas supply shall have a maximum inlet pressure of less than
14" water column (350 mm), ½ pound pressure (3.5 kPa), and a
minimum of 3.5" water column. The entire piping system, gas
meter and regulator must be sized properly to prevent pressure
drop greater than 0.5" WC as stated in the National Fuel Gas
Code. This information is listed on the rating plate.
It is very important that you are connected to the type of gas as
noted on the rating plate: "LP" for liquefied petroleum, propane
gas, or "Nat" for natural or city gas. All gas connections must be
WHL-001 Rev. 3.16.15
INTERNAL CONNECTION DIAGRAM
FAN HOT
FAN NEUTRAL
X4-1
WHITE
X4-2
PINK
X4-3 RED
ORANGE
X4-4
X4-5
X4-6 PINK
X4-7
BLACK
X5-1 GREY
X5-2 GREY/WHITE
X5-3 YELLOW
X5-4 YELLOW/WHITE
X5-7
GREEN
X5-8
GREEN/WHITE
X3-1 GREY
X3-2
GREY/WHITE
X3-7
BLACK
X3-8 BLACK/WHITE
approved by the local gas supplier or utility, in addition to the
governing authority, prior to turning the gas supply on.
Do not remove the adaptor in Figure 19! It is mandatory that
this fitting is used for connection to a field fabricated drip leg
per the National Fuel Gas Code. You must ensure that the
entire gas line to the connection at the water heater is no
smaller than ½".
Once all inspections have been performed, the piping must
be leak tested. If the leak test requirement is a higher test
pressure than the maximum gas inlet pressure, you must
isolate the heater from the gas line to continue leak testing.
To do this, you must turn off the factory and field-installed gas
cocks. This will minimize the possibility of damaging the gas
valve. Failure to do so may damage the gas valve. In the event
the gas valve is exposed to a pressure greater than ½ PSI, 14"
water column, the gas valve must be replaced. Never use an
open flame (match, lighter, etc.) to check gas connections.
GROUND
BLOWER TACH
BLOWER 24VDC
BLOWER PWM
GAS VALVE
BLACK WHITE
GREEN
COMBUSTION
BLOWER
UPPER TEMP SENSOR 1
UPPER TEMP SENSOR 2
HIGH FLUE TEMPERATURE SWITCH
BLOCKED VENT PRESSURE SWITCH
OUTDOOR SENSOR (OPT)