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Service Manual
Fig.: Non-return valve
- If DHW output is too low descale the non-return valve.
CGW
CGS
- If the DHW output is too low, descale the DHW heat ex-
changer and the non-return valve.
- Reopen the cold water tap.
Check sacrificial anode (CGS only)
- Shut off cold water valve.
- Take off cover and unscrew sacrificial anode.
- In case of considerable wear replace anode.
sacrifical anode
Remove access trap cover (CGW only)
- Disassemble pipework
- Unscrew nut from clamp of access trap cover, remove
clamp
- Take of access trap cover
- Reassemble in reverse order
NB
- Replace sealing of access trap cover prior to reassembly
- Tightening torque of nut for the clamp of the access trap
cover is 55-60 Nm.
Summary of Contents for CGB-11
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