0501UCA
23/25
manual intervention to reset the electronic
burner control either on the appliance or a
remote control device is necessary on those
fitted with hot surface ignition systems. When
the main burner fires and warms the heat
exchanger, the heat is sensed by a thermally
actuated fan control which switches on the fan
when the temperature has reached
approximately 45°C. At the end of a heating
cycle when the burner is switched off, the air
circulation fan will continue to run on until the
air heater has cooled to a safe condition.
Thereafter the fan will remain off until the next
cycle is initiated.
Fig. 18 :User lighting access panel
14.7
To light the air heater:
Thermoelectric;
Models UCA
25
→
45 see fig. 19
- Carry out the following procedure (which is
also displayed on the air heater casing)
- Ensure that the air discharge louvres are set
to an open position;
- Turn
ON
the gas supply to the air heater;
- Switch
ON
the electricity supply to the air
heater;
- Set room thermostat or remote control to an
OFF
setting;
- If fitted ensure that a time control is at an
ON
setting;
- Observe gas control details from figures 6
set control to star position:
Using a lighted taper or match depress and
hold the control valve start knob and apply
light to the ignition burner. When the ignition
burner has lit, hold control for 30 seconds.
Ignition burner should remain alight when
released. Turn knob to
"Flame"
position
NOTE:
- If ignition burner has not lit wait five minutes
and repeat the lighting procedure
- Having established the ignition burner set
control to
"Flame"
position, appliance
operation is now fully automatic;
- Set room thermostat to call for heat and/or
adjust to the desired comfort level. The pilot
burner will now light the
main burner.
- In the event that the pilot flame goes out for
any reason it is important to wait five minutes
before attempting to relight the gas due to
the possibility of main gas flowing from the
main burner if the thermocouple has been
energised.
- To stop the burner, put the control knob to
the
OFF
position as indicated figure 19. It
must be noted there is a security interlock
which prevents relighting for one minute.
14.8
To light the air heater:
Thermoelectric burner control
Models UCA
55
→
95 see fig. 20
- Carry out the following procedure (which is
also displayed on the air heater casing)
a Switch OFF electricity supply to the air
heater;
b Ensure that the gas supply to the air
heater is on;
c Set room thermostat to OFF or its lowest
setting. If fitted, ensure time switch is set
to an ON cycle;
d
Depress and hold control valve start button
fig. 18;
e Using a lighted taper or match light the
ignition burner located as shown;
f
Keep start button depressed 20 seconds
after ignition burner has lit;
g Close burner compartment access door;
h Switch ON electricity supply to the air
heater;
i
Adjust room thermostat to desired
temperature and any other external
controls to on;
Important
:
If ignition burner pilot flame fails to light or
goes out for any reason allow 3 minutes
before re-lighting. This time must also be
allowed before a re-ignition attempt if there
is a flame failure of the main burner for any
reason.
