D2CND0 D2CND0 D2TND0
D2TND0 D2TND024A4AA
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)
•
Take out the cable clips from on the right cover (refer to
Section 4.3).
•
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 (refer to Section 4.8).
•
Unscrew the screws that connect hermetic cabinet and
right cover (1).
•
Remove the flow and return pipe’s fastening clips (2).
•
Remove the safety pin flow pipe and flow hydroblock (3).
•
Remove the flow pipe from flow hydroblock by pulling(4).
•
Undo the pipe joint that provides the return pipe- pump
connection by using wrench (5).
•
Take out the pump pipe from the heat exchanger by
manouevring (6).
•
Remove the fan group from the burner hood (refer to
Section 4.4).
•
Unscrew the flue gas pipe screw (7).
•
Take out the flue gas pipe from the condensate sump
manually by pulling (8).
4 Part replacement
(1)
(7)
(8)
(2)
(5)
(6)
(3)
(4)
(2)
