Oval Radiant Tube Heaters
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Owner’s Manual • Oval Radiant Tube Heaters
16
Heater Controls
The tube heater is operated by the building’s
environmental control system. To accomplish this, the
heater must be connected to an electrical outlet controlled
by a relay or set of contacts that is closed and opened by
the building controller.
A series tap thermostat may be used to operate the tube
heater.
Connecting a Series Tap
Thermostat
-- Connect the power cord of the heater to the female side
of the thermostat cord set.
-- Plug the male side of the thermostat cord to an
approved extension cord or to a wall outlet.
Start-Up Instructions
Follow steps 1 - 6 on initial start-up after heater
installation. For normal start-up, set building control
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. 13.
WARNING
Electrical Shock Hazard
■ Disconnect the heater’s electrical supply before
interconnecting the temperature control.
■ Failure to disconnect the electrical supply will
result in electrical shock.
■ Electrical shock will cause severe injury or
death.
2. Connect the electrical cord to an approved
electrical outlet.
3. 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 FAULT LED (light
emitting diode) is on the burner box.
A flashing red light 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.
4. On a call for heat, the ON green light will be lit and
the motor will start up and run for five (5) seconds.
See Fig. 14.
FIG. 14
GREEN
RED
ON
FAULT
5. 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.
6. 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.
Shut-Down Instructions
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.
FIG. 13
