joule Thermalstore 1.0, Installation Manual

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Thermalstore
54
Warning: Water drained off may be very hot
GENERAL
Servicing should only be carried out by competent installers and any spare parts
used must be purchased from JOULE.
NEVER bypass any safety devices or operate the unit without them being fully
operational.
DRAINING
Switch the electrical power off (important to avoid damage to element). Isolate
boiler from the unit. Turn off the cold water supply valve. Open hot water tap.
Open the drain valve. The unit will drain.
ANNUAL MAINTENANCE
The water heaters require annual servicing in order to ensure safe working and
optimum performance. It is essential that the following checks are performed by a
competent installer on an annual basis. This is commonly done at the same time as
the annual boiler service.
Twist the cap of the expansion relief valve on the inlet control set and allow water
to fl ow for 5 seconds. Release and make sure it resets correctly.
Repeat with the pressure / temperature relief valve. In both cases check that the
discharge pipework is carrying the water away adequately. If not, check for
blockages etc. and clear. Check that any immersion heaters fitted are working cor-
rectly and that they are controlling the water at a temperature between 55°C and
65°C.
Maintenance