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COMBAT
®
CABINET HEATERS INSTALLATION, COMMISSIONING, OPERATION AND SERVICE MANUAL
48 of 85
SECTION 11: USER INSTRUCTIONS
11.1 User Instructions
The Cabinet heaters are fully automatic and operate
from the external controls fitted on site.
The only user controls at the heater are the:
Fan Run Button - See Page 49, Figure 22.
Over heat lockout reset button - See Page 49,
Section 11.2.2.
Limit thermostat reset button - See Page 49, Figure
22.
11.1.1 Heater Operation
When the heater has been switched on by the
remote controls installed on site, the main burner will
automatically turn on. The burner control will control
the safe ignition of the flame. When the heat
exchanger is sufficiently heated, the fan thermostat
turns on the main fan(s).
All heaters require a constant gas and electricity
supply, which must not be interrupted during the
normal operation of this heater.
NOTE: The fan will come on during burner firing for
horizontally mounted and high-flow heaters.
Figure 21: Heater Operating Sequence
11.1.2 Heater Operation (high/low)
The heater will operate as described in
Section
11.1.1 with these added features:
High/Low Operation
A second limit thermostat or a two-stage thermostat
will be installed on site so that as the temperature
DANGER
Electrical Shock Hazard
Disconnect electric before service.
Heater must be properly grounded.
Failure to follow these instructions can result
in death or electrical shock.
Fire Hazard
Keep all flammable
objects, liquids and
vapors the minimum
required clearances to
combustibles away
from heater.
Some objects will catch
fire or explode when
placed close to heater.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Edges are sharp.
WARNING
Failure to follow these instructions can result in death, injury or property damage.
Burn Hazard
Allow heater to cool
before service.
Tubing may still be hot
after operation.
Explosion Hazard
Turn off gas supply to
heater before service.
ON
RUN ON
CLOSE
DOWN
THERMOSTAT
CALL FOR
HEAT
BURNER
RUN
FAN
2-3 MINUTES
ON
ON
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