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47 PC BOARD NO. 35
1. Remove the lower front panel.
2. Slacken the 2 screws securing the control box front
panel. Carefully lift it up and hinge forward.
3. Release the ribbon cable plug from PCB No. 35.
4. Release PCB No.35 from the 6 plastic mounting pins
and replace the board.
5. Reassemble in reverse order.
49 COMBUSTION CHAMBER INSULATION REPLACEMENT
The insulation boards used in the combustion chambers
of these products contain man-made fibres, refractory
fillers, organic and inorganic binders and as such are
deemed to be harmless to humans.
Caradon Plumbing Limited, however, recommend that
for your own comfort and to comply with good working
practise the procedure described below is followed.
IMPORTANT. Turn OFF the gas and DISCONNECT the
electricity supply.
To replace the insulation boards the major boiler
components (including the heat exchanger and burners)
have to be removed to gain access to the combustion
chamber.
Concord CXC -
Installation
SERVICING
48 PC BOARD NO. RTC/34
1. Remove the lower front panel.
2. Slacken the 2 screws securing the control box front
panel. Carefully lift it up and hinge forward.
3. Remove the real time clock board (PCB No. RTC/34)
from PCB No.34 by squeezing the 4 mounting pins and
pulling forwards.
4. Reassemble in reverse order.
Prior to removal of the boards the
following protective equipment should be
worn:
• Face mask supplied with the spare part.
• Gloves supplied with the spare part.
1 Damp down the combustion chamber area containing
the insulation boards.
2. Remove the insulation boards. The replacement boards
are supplied in a plastic bag. This bag should be
retained and the discarded boards should now be
placed into it.
3. Sweep any dampened particles and place in the plastic
bag.
4. Fit new insulation boards.
5. Remove the gloves and face mask and place them in
the plastic bag.
6. Wash your hands and any areas of skin which may have
come into contact with any of the particles from the
insulation board.
7. Seal the plastic bag and dispose of it and its contents
into a commercial tip.
31
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