Maintenance and checks
8.
Maintenance and checks
Normally, the work described in the following will be carried out by your maintenance engineer at the annual
servicing. Nevertheless, you should carry out the following checks regularly throughout the year, and do
the work described if necessary.
Check the water level
When the water pressure is too low (readable from the manometer), notify your installation engineer and/or
refill with water as required.
Filler- and drain-tap
Refilling the heating
• Turn the main switch to "O".
• The shut-off valves in both heating feed and heating
return circuit must be open.
• Connection between the filler tap and the water tap is
made with a hosepipe:
- fill the hosepipe with water before making the connec-
tion, so that no air will get into the heating system.
- unscrew the hosepipe again after filling in order to
break the connection reliably.
• Make sure that the water is of a sufficient quality: it must
be drinking water with a pH value not over 9.5.
• Refill with water slowly, keeping a check on the water
level at the hydrometer or manometer.
• Keep the vents on the radiators open until nothing but
water escapes.
• No chemical additives (inhibitors) or antifreeze may be
used in the heating system.
Check the neutralisation installation
The neutralisation installation must be checked once a
year - or once the granules have been used up (dissolved).
Normally the service engineer will carry this out.
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4 204 075 / 02
