1104UESAGBEN, page 22/31
To turn off gas supply at the appliance :
1) Set thermostat to the lowest possible setting or ‘OFF’ position.
2) Shut off the manual service valve when the fan has stopped.
3) Switch off electric power to the appliance.
• Check gas pressure as described in detail below.
• Turn the unit off and on, pausing 2 minutes between each cycle. Observe
for smooth ignition.
• Set the thermostat to the required room temperature.
• Place this booklet and any control or optional information in an accessible
location near the heater or give this information to the end user.
The material contained in the MAINTENANCE AND SERVICE Section of this man-
ual is designed to aid a quali
fi
ed service technician in maintaining and servicing
this equipment. This heater will operate with a minimum of maintenance. To en-
sure long life and satisfactory performance, a heater that is operated under normal
conditions should be inspected and cleaned at the start of each heating season
(inspection and maintenance at least once a year). If the heater is operating in an
area where an unusual amount of dust or other impurities are present in the air,
more frequent maintenance is recommended.
When any service is completed, be careful to reassemble correctly to ensure that
no unsafe conditions are created. When starting the heater, always follow the light-
ing instructions on the heater.
The following procedures should be carried out at least once each year :
• Clean all dirt, lint, and grease from the fan blade, fan guard, and motor.
• Check the heat exchanger both internally and externally for evidence of physi-
cal damage.
• Check the burner for scale, dust, or lint accumulation. Clean if required.
• Check the
fl
ue combustion air system for soundness. Replace any parts that
do not appear sound.
• Check the wiring for any damage. Replace damaged wiring.
• Clean the condensate traps
10.4 Check insta-
lation after start-
up
11. MAINTENANCE
& SERVICE
Warning :
If you turn off the
power supply,
always turn off the
gas.
11.1 Maintenance
schedule
NOTE: If replacement
parts are required, use
only factory-authorised
parts.
Figure 16a : Location of controls
1) Burner
2) LC3 limit control
3) Burner operating light (H6)
4) Reset switch (S5)
5) Flame sensor (IS)
6) Control panel assy (
fi
g. 11b)
7) Gas valve (V1)
8) Fan motor (M1)
9) Venter motor.
10) Limit control LC1
11) Spark ignitor (ER)
12) Reset LC3 (limit control)
Sensors of LC1/LC3 are located in the air
outlet of the heater.
8
9
1
5
10
2
7
6
11
12
3
4
