Test Mode; Maintenance - Westinghouse WGR050NG076 Installation, Start-Up, Maintenance, Parts, Warranty

4. Adjust the temperature set point of the heater to the desired level.
The factory default setting is 120
"Basic Control Functions" in this manual.
5. If the water heater fails to start, refer to the Troubleshooting
section in the back of this manual.
B. Test Mode
Test Mode is enabled by pressing
In this mode the water heater operates without modulation, and the
combustion system initially runs at the maximum fan speed. The
SERVICE symbol is displayed on the LCD when Test Mode is active.
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
It is very important that the combustion system be set within the
recommended CO measurements listed below. Visually looking
at the burner does not determine combustion quality. Failure to
measure combustion with a calibrated Combustion Analyzer and
set the throttle within the recommended CO measurements could
result in property damage, severe personal injury, or death.
Combustion Settings on All Models
Natural Gas (NG)
Fan Speed
Low Ignition High Low Ignition High
Carbon Monoxide
1-10 2-15
(CO) PPM
Carbon Dioxide
8-10
(CO 2 ) %
Table 18 - Combustion Settings - All Models
Fan Speeds
Fuel Ignition
Natural Gas 5000
Propane 3800
Table 19 - Fan Speeds
o
F. If changes are necessary, follow
or together for 5 seconds.
- 1/3 flame symbol
- 2/3 flame symbol
- full flame symbol
o
C
o
C
.
Propane (LP)
2-20 1-10 2-15 2-20
8 1/2- 10 1/2 9-11
Min Max
2150
6300
2100
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.
Resistance Table for Supply Temperature Sensor
High / Low Temp Sensor Temp. (
32
41
50
59
68
77
86
95
104
113
122
131
140
149
158
167
176
185
194
202
212
Table 17 - Supply Temperature Resistance Sensor
In unusually dirty or dusty conditions care must be taken to keep
water heater burner door in place. Failure to do so VOIDS warranty.
WHL-001 Rev. 001 Rel. 008 Date 8.23.18
o
F) Resistance (Ohms)
32550
25340
19870
15700
12490
10000
8059
6535
5330
4372
3605
2989
2490
2084
1753
1481
1256
1070
915
786
667
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