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COMMISSIONING AND MAINTENANCE
14 COMMISSIONING
It is essential to perform the following checks before starting up or
testing the functioning of the storage cylinder. In particular, check
that:
− The supply cocks in the domestic water circuit are all open
− The plumbing connections are connected properly
− All the pipes in the water circuit have been insulated in
conformity to relevant standards
Shut down the water heating system connected to the storage cyl-
inder as instructed in its own manual.
Once the system has been started up, perform the following
checks.
− Make sure that all pumps are free and rotate in the right
direction
− The complete venting of all circuits
− Turn the main power switch OFF and make sure that the
water heating system shuts down completely.
Provided the above checks have been completed satisfactorily, re-
start the system and verify its performance.
15 TEMPORARY SHUTDOWN
If you are going away for a short period of time like a weekend or a
short holiday, etc., and outdoor temperatures are going to remain
above ZERO, proceed as follows.
− Adjust the storage cylinder thermostat to its minimum set-
ting.
9
If the temperature to which the heater is exposed can fall be-
low 0°C (frost hazard), perform the operations described in
paragraph "Shutdown for extended periods".
16 PREPARING FOR EXTENDED PERIODS OF DISUSE
If the storage cylinder is not going to be used for an extended pe-
riod of time, perform the following operations:
− Disconnect the electrical power supply by moving the gen-
eral switch of the system and the switch on the main com-
mand panel (if present) to "off"
− Close the shut-off cocks for the domestic hot water circuit.
9
Drain the central heating circuit and domestic hot water circuit
if there is any risk of freezing.
15
COMMISSIONING AND MAINTENANCE
Commissioning and maintenance
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