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16
Sentinel v.2
Heater Controls
Refer to the heater's burner box hinged access panel, or
refer to Start-up instructions in this manual to determine if
your heater has a single or two stage gas control.
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.
The tube heater is operated by the building's environmen-
tal 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 ap-
proved extension cord or to a wall outlet.
Start-Up Instructions
Follow steps 1 - 6 on initial start-up after heater installa-
tion. 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. 14.
Owner's Manual • Sentinel v.2
Radiant Tube Heaters
FIG. 14
2. Connect the electrical cord to an approved electri-
cal 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 flash-
ing 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. 15.
FIG. 15
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 approxi-
mately 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.
GREEN
RED
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