L.B. White I-40 Infraconic Spark Ignition - Manual (Page 12)

11
The building’s environmental temperature control system
will shut the heater down after proper temperature has been
achieved.
If heater is to be shut down for cleaning, maintenance or
service:
1. Shut off all gas supply valves to the heaters.
2. Allow heaters to burn off fuel gas remaining in the
gas supply line.
3. Position the ON/OFF switch to OFF.
4. Disconnect the heater from its electrical supply.
Shut-Down Instructions
Follow steps 1-5 on initial start up after heater installation
by a qualified gas heater service person. For normal
startup, simply turn the building thermostat above room
temperature.
1. Connect the heater to an approved electrical supply
and building’s temperature control system.
2. Open all gas supply valves to the heater and check
for gas leaks at all connections using approved leak
detectors.
3. Energize the building’s temperature control system to
provide power to the heater.
4. Position the ON/OFF switch on the heater’s control
box to ON. See Fig. 7. The igniter will spark and
ignition will occur.
5. Set the building’s temperature control to desired
temperature.
■
It is normal for air to be trapped in the gas line on new
installations.
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The heater may attempt more than one ignition trial
before air is purged from the line and ignition occurs.
This heater includes a spark ignition control module for
purposes of controlling the timing of the ignition process of
the heater as well as monitoring the safety functions. The
control module is located in a control box at the gas inlet
end of the heater. On a call for heat, the igniter will spark
and the gas control valve will open shortly afterward. The
igniter will continue to spark for approximately 10 seconds.
Flame sense, as monitored by the ignition control, will keep
the gas valve open and main burner in operation until
proper temperature is achieved.
The ignition control module will make up to 3 trials for
ignition. There will be a 15 second time span between each
ignition trial. If ignition is not achieved after the third trial, a
15 minute wait period will occur. After the 15 minute time
span has elapsed, the heater will make three more trials for
ignition. This process will continue as long as there is a call
for heat from the building’s temperature control system.
FIG. 7
Start-Up Instructions
SWITCH