56
SERVICING
ESPRIT 2 -
Installation and Servicing
Refer also to Frame 8 - '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 Frame 57.
2.
Remove the boiler front, bottom and sealing panels. Refer
to Frames 49 & 50.
3.
Drain the boiler. Refer to Frame 77.
4.
Remove the control box and place on one side. Refer to
Frame 71.
5.
Remove the fan / venturi assembly and place on one side.
Refer to Frame 52.
6.
Remove the burner and place on one side. Refer to Frame
53.
7.
Remove the ignition and detection electrodes. Refer to
Frames 63 & 64.
8.
Remove the spark generator. Refer to Frame 65.
9.
Release the flue from the turret. Refer to Frame 26.
10.
Remove the turret from the boiler. Refer to Frame 26.
11.
Release the silicone tubing from the sampling point.
12.
Release the electrical connection to the dry fire thermistor.
13.
Remove the M5 x 10 screw retaining the top flue manifold
casting.
14.
Remove the top casting of the flue manifold from the
appliance.
15.
Remove the automatic air vent. Refer to Frame 76.
16.
Undo the 4 M x 10 screws securing the bottom flue
manifold casting and remove.
81
HEAT ENGINE RENEWAL
17.
Remove the edge clip securing the dry fire thermistor
wiring.
18.
Remove the clip securing the return pipe.
19.
Remove the overheat thermostat and the control
thermistor. Refer to Frame 62.
20.
Remove the clip to release the flow pipe.
21.
Remove the condensate ‘S’ trap. Refer to Frame 69.
22.
Remove the 2 M5 screws securing the interpanel to the
back panel.
23.
Slide the heat exchanger and interpanel assembly upward
to disengage and remove from the casing, complete with
the flow pipe.
24.
Remove the 2 M6 countersunk screws, remove the
interpanel and transfer to the new heat exchanger.
25.
Remove the M5 screw and remove the flow pipe securing
bracket.
26.
Remove the flow pipe and transfer to the new heat
exchanger.
27.
Reassemble in reverse order, replacing gaskets or seals if
any sign of damage is evident. When replacing the spring
clips located on both the flow and return pipe connections,
ensure clip is oriented to correctly match connecting pipe
diameters.
Note.
The heat exchanger is supplied with new combustion
chamber insulation boards. These should be fitted (refer
to Frame 68 before the burner and fan / venturi assembly
and before the ignition and detection electrodes are
replaced).
28.
Refill the boiler. Refer to Frame 36.
29.
Check operation of the boiler. Refer to Frames 45 & 46.
SER
VICING
206091-1.pmd
26/05/2010, 16:09
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