50
8.5
TO REMOVE/ REPLACE THE
ELECTRODES (Fig.37)
Remove the front panel (fig. 39).
Remove the ignition and/or sensing lead
plug.
Unscrew the securing screws with a
TORX T15 screwdriver and put them into
a suitable container so that they don’t get
lost.
Withdraw the Spark electrode and/or
Sensing electrode carefully from the burner
cover being careful not to damage the
seal.
Replace with a new
Replace with a new electrode in reverse
order. Ensure the gap is correct and there
is a good seal when replaced (always
fitting a new gasket).
8.6 TO REMOVE/REPLACE THE BURNER
(FIG.42)
Remove the front panel (fig. 39).
Unscrew the gas pipe nut and remove
the retaining clip. Detach the connectors
the retaining clip. Detach the connectors
from the fan.
from the fan.
Unscrew the four screws that fits the burner
door to the heat exchanger and remove it.
Remove the electrodes (sect. 8.5), and
remove the insulation pad, is helpful to use
a screwdriver to move the fastening clips.
To remove the burner, unscrew the screws
with a TORX T15 srewdriver.
Replace in reverse order.
Fig.42
8.7
TO REMOVE/REPLACE THE MAIN HEAT
EXCHANGER
Remove the front and bottom panels
(fig. 39-40).
Drain the boiler CH circuit and drain the
DHW circuit. Follow the instructions to
Follow the instructions to
remove the burner (sect. 8.6). Pull down to
remove the burner (sect. 8.6). Pull down to
remove the condens
remove the condense pipe on the bottom
of the heat exchanger.
Disconnect the flow
and return pipes at the heat exchanger.
Loosen the four heat exchanger securing
screws and clamps then carefully ease the
heat exchanger out.
CAUTION :
There will be water in the heat
exchanger.
Replace in reverse order, always use new
O-ring sea
O-ring seals.
Summary of Contents for HE 25 C COMPACT
Page 2: ...2...
Page 28: ...5 5 FLUE TERMINAL POSITION 28...
Page 57: ...11 TEMPLATE DRAWING 57...
Page 58: ...12 SPARE PARTS Fig 56 58...
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