L.B. White Sentinel Radiant Tube AT150 Center Mount - Manual (Page 15)

Follow steps 1 - 6 on initial start-up after heater installation.
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 has a manual shut-off feature incorporated into
the valve assembly. Ensure the indicator on the valve
is turned to the ON position. See Fig. 18.
FIG. 18
2. Connect the electrical cord to an approved electrical
outlet.
3. Set the thermostat 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. A red LED (light emitting diode) is
on the burner box cover . A constant on red indicates
that the heater is functioning correctly. Any flash
pattern identifies a problem in the operation of the
heater. Refer to the troubleshooting decal on the
interior of the access panel for assistance in
troubleshooting.
5. The burner box has either one or two amber LEDs.
One amber light indicates single stage heating
capability. Two lights indicate two stage heating. See
Fig. 19.
FIG. 19
6. On a call for heat, the red status LED will come on.
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 spark.
-- First amber LED comes on, indicating first stage
heat, (for two stage heaters), or full heat output,
(single stage heaters.)
-- Second amber LED (two stage heaters only) comes
on, based on thermostat setting, indicating the
valve has opened to full heat output. See Fig. 3.
7. The ignition control will make up to three trials for
ignition. Each trial for ignition will take approximately
ten seconds. If the main burner does not light, the
system will lock out, and a three flash pattern will be
given by the red LED.
NOTE: It is normal for air to be trapped in the gas
hose on new installations. The heater may
try more than once for ignition before the air
is finally purged from the line and ignition
takes place.
If the heater is to be shut down for cleaning, maintenance or
repair, follow steps 1 - 4. Otherwise, set the 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 thermostat to off or no heat position.
4. Disconnect the heater from the electrical supply.
Start-Up Instructions
Shut-Down Instructions
15
RED
AMBER
BURNER VIEWING
WINDOW