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Commissioning
A Class HP Installation a
nd User Instructions R02583
-6 09/15
Page
25
6 Commissioning
At the time of commissioning, complete all
relevant sections of the Benchmark Checklist
located on the inside back pages of this
document.
The following commissioning procedures only
detail the required steps to be taken for the
potable water loop and not for the heat pump
loop:
1) Before making any water mains connections
to the inlet control group, flush the mains
pipework out to ensure all debris has been
removed so as not to damage the strainer
within the combination valve.
2) Make final mains connection on combination
valve and check all connections and joints to
ensure they have been tightened and
secured correctly.
3) Before turning on the mains supply to the
cylinder a hot water tap should be opened,
preferably on the same floor or the floor
below where the cylinder is located.
4) Check the pre-charge in the expansion
vessel and ensure it is at least 3 bar. Note
actual pressure on label on expansion vessel.
5) Turn on the supply to the cylinder and fill
until water runs from the open hot water
tap. Continue to flush the system until all
debris has been removed.
6) Close the hot water tap.
7) Check all joints for leaks, even those not
having been altered especially when
replacing a vented cylinder.
8) Open temperature and pressure relief valve
to ensure proper discharge and check after
closing that valve is not dripping.
9) Open expansion relief valve to ensure
proper discharge and check after closing
that valve is not dripping.
10) Check all shower outlets, toilet cisterns
and other draw off points for leaks or
dripping (especially when replacing a
vented unit). Open all water outlets to
purge air from pipe work and ensure
proper operation.
11) Adjust timer programmer and cylinder
thermostat settings in accordance with
client requirements.
12) Follow the instructions for commissioning
the heat pump as per heat pump
installation manual.
13) Commission the user interface as per UI
installation manual.
14) Instruct user in the operation of the
cylinder, heat pump and UI. Hand over all
manuals and advise the owner of annual
service requirements.
15) Complete the technical data label on the
cylinder with legible and permanent
writing.
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