Supplied By www.heating spares.co Tel. 0161 620 6677
Optia FF
-
Installation & Servicing
31
SERVICING
MAIN BURNER
After any servicing, reference should be made to Table 2
which quotes details of the rated output with the related
burner setting pressure and the heat input. Any required
adjustments should be made by using the pressure
adjustment screw.
Refer to 'initial Lighting', Frame 45.
REPLACEMENT OF PARTS
1.
Refer to Frame 56.
2.
Remove the control box fixing screws.
3.
Swing the control box down into the servicing position.
58 OVERHEAT THERMOSTAT REPLACEMENT
56 GENERAL
When replacing any component:
1.
Isolate the electricity supply.
2.
Turn OFF the gas supply.
3.
Remove the boiler casing. Refer to Frame 50.
IMPORTANT.
When work is complete the casing must
be correctly refitted, ensuring that a good seal is made.
4.
Pull off the electrical connections at the thermostat. Remove
the backnut retaining the thermostat to the bracket. Withdraw
the thermostat phial from the heat exchanger pocket.
5.
Fit the new thermostat and reassemble in reverse order.
6.
Check the operation of the boiler.
55 GAS PRESSURE ADJUSTMENT
PILOT
The pilot is factory set to maximum and no further
adjustment is possible. If, after removing and checking the
injector (as detailed in Frame 61) and ensuring that there
is an inlet pressure of 20 mbar available, the pilot does not
light then contact
Optia
Technical Helpline 0870 8498057
.
Relight in accordance with 'Initial Lighting', Frame 45.
Note.
In order to assist fault finding, the control box printed
circuit board is fitted with 2 indicator lights which represent the
following boiler conditions:
Neon
I
3.
Mains electricity ON.
Neon SG1.
Flashes to indicate ignition operation (stops after
detection).
The boiler MUST NOT be operated if the casing is not fitted.
1.
Refer to Frame 56.
2.
Unfasten the 2 nuts and washers holding the
sightglass assembly to the casing front panel.
3.
When fixing the new assembly ensure that the parts
are in the correct order. The frame must have the
return edge at the bottom.
4.
Retighten the 2 nuts to ensure an airtight seal. Do
NOT overtighten.
6.
Replace the boiler casing. Refer to Frame 54.
57 SIGHTGLASS REPLACEMENT
SER
VICING
200776-4.pmd
6/23/2005, 10:12 AM
31
