D2CND0 D2CND0 D2CND0
D2CND0 D2TND0 D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
15
4.5 Heat Exchanger and Burner Removal
•
Isolate the appliance from power supply and closedown
the gas valve.
•
Drain the water from the boiler. (refer to Section 4.1)
•
Open the appliance (refer to Section 4.2).
•
Disconnect the electrical leads of electrodes (refer to
Section 4.3).
•
Disconnect the electrical leads of the flow,return and flue
NTC sensors and high limit thermostat (refer to Section
4.3).
•
Take out the syphon parts by turning manually (1).
•
Unscrew the screws that connect hermetic cabinet and
right cover (2).
•
Remove the flow and return pipe’s fastening clips (3).
•
Remove the safety pin flow pipe and flow hydroblock (4).
•
Remove the flow pipe from flow hydroblock by pulling(5).
•
Remove the return pipe from the return group (6).
•
Remove the fan group from the burner hood (refer to
Section 4.4).
•
Unscrew the flue gas pipe screws (7).
•
Take out the flue gas pipe from the condensate sump
manually by pulling (8).
Note:
Ensure the flue gas pipe’s gaskets (a) mounted cor
-
rectly during the re-assemble.
4 Part replacement
(1)
(5)
(3)
(4)
(6)
(7)
(7)
(7)
a
(8)
(2)
Summary of Contents for D2CND028A1AA
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