John Wood Power Direct Vent (Non-ENERGY STAR qualified models) - Manual (Page 23)

Gas Control/Thermostat
Alternatively, this heater may be equipped with the White-
Rodgers Intelli-Vent
TM gas control/thermostat and a hot-sur-
face igniter. This control is a combination gas valve, ther-
mostat and ignition controller for use on this power vented
water heater. The valve contains a microcomputer that
supervises the ignition sequence and monitors the temper-
ature settings and operation of the heater. The computer
also monitors the flammable vapour safety features of this
heater.
This heater is equipped with a White-Rodgers Silicon
Nitride Igniter system that automatically ignites the
burner. Do not attempt to light this heater manually with
a match or flame-producing device.
Putting the Heater into Service
1. Turn the manual gas shut-off valve for the heater to the
“ON” position.
2. Follow the Lighting Instructions (White-Rodgers) given
on the side of the water heater and also depicted in this
manual. See also “Gas Supply”, “Water Heater
Operation” and “Sequence of Operation”.
3. Upon start up all the indicator lights on the front of the
control will come on and then turn off. This indicates
that the control has completed a self-diagnostic test and
is ready for operation.
Note: If any of the indicator lights remain on, this indicates
a system fault that needs correcting. See the “System Error
Codes” and “Troubleshooting Guide (White-Rodgers)” for
corrective action.
Temperature Adjustment
The control is adjusted to its lowest temperature setting
(approximately 21°C (70°F)) when shipped from factory.
The temperature of the water can be selected by using the
temperature adjustment buttons on the front of the gas con-
trol (see Figure 18) as follows:
1. “Wake up” the temperature indicators by holding down
both the “COOLER” and “HOTTER” temperature adjust-
ment buttons at the same time for one second. One or
two of the temperature indicators will light up. After 30
seconds, if no other buttons are pushed, the control will
go back to “Sleep” mode and both buttons will again
have to be pressed to see the water temperature set-
ting.
2. Release both of the temperature adjustment buttons.
3. The current water temperature setting will be indicated.
See Table 3 for an explanation of the temperature indi-
cators.
a. To decrease the temperature press and release the
“COOLER” button once. The temperature indicators
will now display the new temperature setting. Press
and release the “COOLER” button until you have
reached the desired setting.
b. To increase the temperature press and release the
“HOTTER” button once. The temperature indicators
will now display the new temperature setting. Press
and release the “HOTTER” button until you have
reached the desired setting.
Note: Holding down the button will not continue to lower the
setting. The button must be pressed and released for each
temperature change desired.
Note: To avoid scald injury, set the control to the lowest set-
ting that will supply the hot water for your needs. Refer to
Table 3 to determine the approximate temperature setting,
and the approximate time for scald injury at that tempera-
ture.
4. When you have completed setting the control wait 30
seconds for the temperature indicators go off and the
control to enter “Sleep” mode.
– 23 –
TEMPERATURE
INDICATORS
TEMPERATURE
ADJUSTMENT
BUTTONS
Figure 18 Temperature Indicators and Adjustment
CAUTION:
Read before proceeding. If you do not follow
these instructions exactly, a fire or explosion
may result, causing property damage, per-
sonal injury or loss of life.
DISPLAY
APPROXIMATE
TEMPERATURE
°C (°F)
21°C (70°F)
(VACATION)
43°C (110°F)
46°C (115°F)
49°C (120°F)
52°C (125°F)
54°C (130°F)
57°C (135°F)
60°C (140°F)
63°C (145°F)*
65°C (150°F)*
71°C (160°F)*
FLASHING
Table 3 Temperature Settings
* These settings are not available on Hi-input models.