L.B. White AD250(Spark Ignition) - Manual (Page 12)

Follow steps 1 - 6 on initial start-up after heater installation
by a qualified gas heater service person. For normal start-
up, simply turn thermostat above room temperature. The
heater will start.
1. Open all manual fuel supply valves and check for gas
leaks using approved leak detectors. The gas control
valve on the heater has a manual shut-off feature
incorporated into the valve assembly. Make sure the
indicator on the valve is turned to the “on” position.
See Fig. 6.
FIG. 6
2. Connect the electrical cord to an approved electrical
outlet.
3. Set the thermostat (if supplied) to desired room
temperature.
4. This heater includes a direct ignition control module
for purposes of controlling the timing of the ignition
process of the heater as well as monitoring of the
safety functions. The control module is contained
within the control enclosure. On the control module
is a red light emitting diode (LED). This LED indicates
the status of the heater. The LED is visible external
of the control enclosure through the plastic eye. A
constant light from the LED is an indicator that the
heater is functioning correctly. Any flash pattern by
the LED is indicative that there is a problem in the
operation of the heater. Refer to the troubleshooting
decal on the access panel at the fan motor end of the
heater for assistance in troubleshooting. Only
qualified and properly trained personnel shall service
or repair the heater.
5. On a call for heat, the motor will start up and run for
five (5) seconds. This “pre-purge” is a safety feature
and a normal operational characteristic prior to
ignition taking place. After five (5) seconds, the
igniter will begin to start.
NOTE: It is normal for air to be trapped in the gas
hose on new installations. The heater may
attempt more than one trial for ignition before
the air is finally purged from the line and
ignition takes place.
6. The ignition control will make up to three trials for
ignition. Each trial for ignition will take approximately
ten (10) seconds. The first three trials for ignition will
occur within 40 seconds if ignition is not achieved. A
15 minute “wait period” will then begin after the third
trial for ignition has taken place. After the 15 minute
time span has elapsed, three more trials for ignition
will take place. If ignition is not achieved at this final
trial, the system will “lock out”, and a three flash
pattern will be indicated by the LED.
If the heater is to be shut down for cleaning, maintenance or
repair, follow steps 1 - 5. Otherwise, simply turn thermostat
to “off” or “no heat” for standard shut down.
1. Close all manual fuel supply valves.
2. With the heater lit, allow heater to burn off excess
fuel in gas supply hose.
3. Turn the indicator on the gas control to “off”.
4. Turn thermostat to “off” or “no heat” position.
5. Disconnect the heater from the electrical supply.
11
Start-Up Instructions
Shut-Down Instructions
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