45
SERVICING
isar -
Installation and Servicing
18mm.
Diverter valve
housing side
Diverter
valve
housing
side
Pump housing
side
Pump
housing
side
24mm.
DHW plate heat exchanger
DHW Plate heat exchanger
Note. The DHW plate heat exchanger will only fit one way
Ecl 2406
6
Pump head
Electrical
lead
Ecl 2047
6
72 PUMP HEAD REPLACEMENT
1. Refer to Frame 50.
2. Remove the casing front & bottom panel.
Refer to Frames 42 & 43.
3. Drain the boiler. Refer to Frame 69.
4. Swing the control box down into the
servicing position. Refer to Frame 44.
5. Disconnect the electrical lead from the
pump.
6. Remove the 4 Allen screws retaining the
pump head.
7. Remove the pump head.
8. Fit the new pump head.
9. Reassemble in reverse order.
10. Refill the boiler. Refer to Frame 29
11. Check operation of the boiler. Refer to
Frame 50.
71
DHW PLATE HEAT EXCHANGER REPLACEMENT
1. Refer to Frame 50.
2. Remove the casing front & bottom panel.
Refer to Frames 42 & 43.
3. Drain the boiler. Refer to Frame 69.
4. Remove the 4 screws securing the rear
support plate and withdraw the plate. Refer
to Frame 67.
Note.
The M4 screws fit the casing and the
self-tapping screws fit the plastic pump
and valve housings.
5. Remove the 2 Torx screws securing the
plate heat exchanger from the valve and
pump housings.
6. Raise the RH side of the heat exchanger,
lower the LH side through the bottom of the
boiler and remove.
7. Fit the new heat exchanger, using the new
gaskets supplied.
8. Reassemble in reverse order ,ensuring
correct location of screws in the support
plate and that tabs on the pump and valve
housings engage in slots.
9. Refill the boiler. Refer to Frame 29.
10. Check operation of the boiler. Refer to
Frame 50.
SER
VICING
Содержание isar m30100
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