Maintenance; Part 10 - Shutdown; Shutdown Procedure; Vacation Procedure - Westinghouse WGR-076 Series Installation, Start-Up, Maintenance, Parts, Warranty

Test Mode can be used to incrementally increase and decrease
fan speed to test the combustion system. See the tables below
for Combustion Settings and Fan Speeds.
1. Use the or buttons to decrease or increase the fan
speed in increments of 50 rpm.
2. Press to advance directly to the maximum fan speed.
3. Press to go directly to the minimum fan speed.
4. Range between minimum and maximum fan speed is taken
as an absolute power value (0 - 100%).
5. During Test Mode, the LCD flame symbols are enabled as
follows:
Flame ON and power < 30% -
Flame ON and power > 30% and <75% -
Flame ON and power > 75% -
6. Burner ON and OFF conditions are:
Burner ON: UPPER temperature < 185
Burner OFF: UPPER temperature ≥ 194
7. Test Mode can be enabled for a maximum of 15 minutes.
8. Test Mode can be disabled by pressing
Combustion Settings on All Models
Natural Gas (NG)
Fan Speed
Low Ignition High Low Ignition High
Carbon Monoxide
1-10
(CO) PPM
Carbon Dioxide
(CO 2 ) %
Table 16 - Combustion Settings - All Models
Fan Speeds
Fuel Ignition
Natural Gas 5000
Propane 3800
Table 17 - Fan Speeds
C. Maintenance
The control system requires no periodic maintenance under
normal conditions. However, in unusually dirty or dusty
conditions, periodic vacuuming of the cover to maintain
visibility of the display and indicators is recommended. In dirty
environments, such as construction sites, care must be taken
to keep the water heater burner cover in place and drywall or
saw dust away from water heater.
In unusually dirty or dusty conditions care must be taken
to keep water heater burner door in place. Failure to do so
VOIDS warranty.
- 1/3 flame symbol
- 2/3 flame symbol
- full flame symbol
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Propane (LP)
2-15 2-20 1-10 2-15
8-10 8 1/2- 10 1/2
Min Max
2150
6300
2100
Allowing the heater to operate with a dirty combustion chamber
will hurt operation. Failure to clean the heat exchanger as
needed by the installation location could result in heater failure,
property damage, personal injury, or death. Such product
failures ARE NOT covered under warranty.

Part 10 - Shutdown

A. Shutdown Procedure
If the burner is not operating, lower the set point value to 70
2-20
and wait for the burner to shut off. Continue to wait for the
combustion blower to stop, so all latent combustion gases
9-11
are purged from the system. This should take a maximum of 5
minutes. After combustion gases are purged turn off electrical
power to the water heater.
B. Vacation Procedure
If there is danger of freezing, change the set point to 70
NOT turn off electrical power. If there is no danger of freezing,
follow "Shutdown Procedure".
C. Failure to Operate
Should the burner fail to light, the control will perform two more
ignition trials prior to entering a lockout state. Note that each
subsequent ignition trial will not occur immediately. After a failed
ignition trial, the blower must run for approximately 10 seconds
to purge the system. Therefore, a time period of approximately
40 to 90 seconds will expire between each ignition trial.
If the burner lights during any one of these three ignition trials,
normal operation will resume. If the burner lights, but goes off in
about 4 seconds, check the polarity of the wiring. See electrical
connection section of this manual.
If the burner does not light after the third ignition trial, the
control will enter a lockout state. This lockout state indicates
that a problem exists with the water heater, the controls, or
the gas supply. Under such circumstances, a qualified service
technician should be contacted immediately to properly service
the water heater and correct the problem.
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WHL-001 Rev. 3.16.15