Heater Control; Electrical Shock Hazard; Start-Up Instructions; Shut-Down Instructions - L.B.White Sentry ST60 Manual Del Propietário

16
Sentry Tube Heaters
Heater Controls
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 Sentry heater is operated by the building's environ-
mental 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.
Connecting series tap thermostat kit.
• Connect power cord of heater to female side of
thermostat cord set.
• Plug the male side of cord set into an approved exten-
sion cord or to 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. 12.
FIG. 12
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
Owner's Manual • Sentry
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 side. A
fl ashing red light identifi es 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 5 seconds. See
Fig. 13.
FIG. 13
ON
FAULT
5. This pre-purge is a safety feature and a normal op-
erational characteristic prior to ignition taking place.
After fi ve (5) seconds, the igniter will spark.
6. The ignition control will make up to three trials for
ignition. Each trial for ignition will take approximate-
ly ten seconds. If the main burner does not light,
the system will lock out, and a three fl ash 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 fi nally purged
from the line and ignition takes place.

Shut-Down Instructions

If the heater is to be shut down for cleaning, mainte-
nance or repair, follow steps 1-4. Otherwise, set the
building's thermostat to off or no heat for standard
shut down.
1. Close all manual fuel supply valves.
2. With the heater lit, allow the heater to burn off
excess fuel in gas supply hose.
3. If applicable, turn the thermostat to off or no heat
position.
4. Disconnect the heater from the electrical supply.
GREEN
RED