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6.4.1 To turn the air heater "ON"
The following checks should be carried out
before attempting to light the air heater.
* Ensure that the gas supply to the air heater
is turned ON;
* Ensure that the electrical supply to the air
heater is switched
ON;
* If fitted ensure that a time switch is set to
an ON period
* Set room thermostat to call for heat e.g. to
above room ambient temperature. The
burner will now light.
The burners can be seen through the
viewing port.
* Adjust the room thermostat to the required
operating comfort temperature. The air
heater will now start automatically when
heat is called for by the room thermostat.
Note:
If the air heater will not start on initial start-up, the
ignition controller may be in lock-out position and
require resetting. This may occur especially if the
appliance has been on stand-by for a prolonged
period.
6.4.2 To turn the air heater "OFF" for short
periods
Adjust the room thermostat to its lowest
setting or 'OFF'. The fan will continue to run
to cool the heater and then switch OFF
automatically.
6.4.3 To turn the air heater "OFF" for long
periods
Adjust the room thermostat to OFF or its
lowest setting. When the fan has stopped,
turn OFF the gas supply and then switch
OFF the electricity supply to the air heater.
6.5 Air heater gas pipe work
The soundness of the air heater pipe work
has been checked prior to leaving the
factory. However during installation,
connections may have been loosened. Check
the soundness of the appliance pipe work
using a soapy solution. If any leaks are found
they must be rectified immediately.
Never use a flame for checking gas
soundness.
6.6 Adjustments
Gas valve
Fig 7a : Types 20- 45
Fig 7b : Types 60-100
1) Shut off solenoid valve EV1
2a)Adjustment low fire
2b)Adjustment high fire
3)Inlet pressure test point (not visible on fig 7b)
4)Outlet pressure test point (not visible on fig 7b)
5)Shut off solenoid valve EV2
6)Pilot outlet
7)Main gas outlet
8)Holes (M5) for fixing flanges
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