48
WHL-001 REV. 9.3.14
Test mode can be used to incrementally increase and decrease fan
speed to test the combustion system. See Tables 15 and 16 for
Combustion Settings and Fan Speeds.
1. Use the
and
push buttons to change the fan speed
(steps of 50 rpm) between the range
maximum fan speed
and
minimum fan speed
2. Use the
to go directly to the
maximum fan speed
3. Use the
to go directly to the
minimum fan speed
Range between
minimum fan speed
and
maximum fan speed
is
taken as absolute
power
value (0 - 100%).
During Test mode, the LCD flame symbols are enabled as follows:
Flame ON and
power
< 30% then one third of the flame symbol will
display
Flame ON and
power
> 30% or < 75% then two thirds of the flame
symbol will display
Flame ON and
power
> 75% then the full flame symbol will display
Burner ON and OFF conditions are:
Burner ON: UPPER temperature < 185°C
Burner OFF: UPPER temperature
≥ 194°C
The function is enabled for a maximum of 15 minutes.
Test mode can be disabled by pressing
button.
COMBUSTION SETTINGS ON ALL MODELS
Natural Gas
Propane LP
Fan Speed
Low
Ignition
High
Low
Ignition
High
Carbon Monoxide PPM
1
– 10
2 - 15
2
– 20
1
– 10
2 - 15
2
– 20
Carbon Dioxide (CO
2
)
8 - 10%
8
– 10%
8 - 10%
8 ½ - 10 ½%
8 ½ - 10 ½%
9 - 11%
Table 15
– Combustion Settings on All Models
FAN SPEEDS
BTU (FUEL)
IGNITION
MIN
MAX
76000 (NATURAL)
5000
2150
6300
76000 (LP)
3800
2100
6300
Table 16
– 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!
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.
Summary of Contents for WGR050LP076
Page 34: ...34 WHL 001 REV 9 3 14 Figure 14...
Page 53: ...53 WHL 001 REV 9 3 14 Figure 25 Replacement Parts...
Page 54: ...54 WHL 001 REV 9 3 14 Figure 26 Replacement Parts...
Page 57: ...57 WHL 001 REV 9 3 14...
Page 58: ...58 WHL 001 REV 9 3 14...
