42
icos system condensing -
Installation and Servicing
SERVICING
Interpanel
Overheat
thermostat
Control
thermistor
Flow pipe
Spring clip
Edge clip
Return pipe
securing bracket
Flow pipe
securing bracket
Ecl 1749
11
12
13
9
16
17
18
25
24
22
26
21
10
14
Refer also to Frame 7 - 'Boiler exploded view'.
IMPORTANT
Before starting the removal procedure, protect the gas and
electrical controls with a waterproof sheet or plastic bag.
1.
Refer to Frames 51 and 43.
2.
Remove the control box and place on one side. Refer to
Frame 63.
3.
Drain the boiler. Refer to Frame 69.
4.
Remove the fan / venturi assembly and place on one
side. Refer to Frame 46.
5.
Remove the burner and place on one side. Refer to
Frame 47.
6.
Remove the ignition and detection electrodes. Refer to
Frames 58 and 59.
7.
Release the flue from the turret. Refer to Frame 19.
8.
Remove the turret from the boiler. Refer to Frame 19.
9.
Unscrew and remove the automatic air vent complete
with adapter.
10.
Release the M5 nut retaining the flue casting spring clip
and remove the spring clip.
11.
Remove the M5 x 10 screw retaining the flue casting.
12.
Release the silicone tubing from the sampling point.
13.
Release the electrical connection to the flue sensor.
14.
Undo the 2 M5 x 10 flue spring clip retaining bracket
screws and remove the bracket.
71 HEAT ENGINE REPLACEMENT
15.
Remove the flue.
16.
Remove the edge clip securing the flue sensor wiring.
17.
Remove the blind grommet to gain access to the return
pipe securing bracket.
18.
Undo the M5 screw and remove the return pipe securing
bracket by sliding forwards.
19.
Remove the overheat thermostat. Refer to Frame 57.
20.
Remove the control thermistor. Refer to Frame 57.
21.
Remove the securing pin to release the flow pipe.
22.
Undo the 2 M5 screws securing the interpanel to the back
panel.
23.
Slide the heat engine and interpanel assembly upwards to
disengage and remove from the casing complete with the
return pipe.
24.
Undo the 2 M6 countersunk screws, remove the interpanel
and transfer to the new heat engine.
25.
Undo the M5 screw and remove the flow pipe securing
bracket.
26.
Remove the flow pipe and transfer to the new heat engine.
27.
Reassemble in reverse order, replacing gaskets or seals
if any sign of damage or deterioration is evident.
Note.
The heat engine is supplied with new combustion chamber
insulation boards. These should be fitted (refer to Frame 60)
before the burner and fan / venturi assembly and before the
ignition and detection electrodes are replaced.
28.
Check operation of the boiler. Refer to Frame 51.
SER
VICING
Содержание icos system m3080
Страница 1: ......
Страница 51: ...51 icos system condensing Installation and Servicing NOTES ...
Страница 53: ......