29
MTS (GB) Limited support the initiative. In
Sections 11 and 12 of this manual you will find the
c
ommissioning checklist (page 68) and the
s
ervice interval record (Page 69), It is important that the
commissioning checklist is completed in the
presence of your customer, they are shown how to use it,
and it is signed by them. Please instruct your customer
that they must have this manual with them whenever they
contact a service engineer or us.
Carry out preliminary electrical system checks to ensure
e
lectrical safety, this must be carried out by a competent
person i.e. polarity, earth continuity, resistance to earth
and short circuit.
FI
LLING
T
HE HE
A
T
ING SY
STEM
:
Lower the control panel and remove the case panels
(see
SECTION 2.12 for further information).
Open the central heating flow and return cocks
supplied with the connection kit.
Unscrew the cap on the automatic air release valve one
full turn and leave open permanently.
Close all air release valves on the central heating
system.
Gradually open valve(s) at the filling point (filling-loop)
connection to the central heating system until water is
heard to flow, do not open fully.
Open each air release tap starting with the lowest point
and close them only when clear water, free of air, is
visible.
Purge the air from the pump by unscrewing the
pump plug anticlockwise, also manually rotate the
pump shaft in the direction indicated by the pump
label to ensure the pump is free.
Refit the pump plug.
Continue filling the system until at least 1.5 bar
registers on the pressure gauge..
Inspect the system f
or w
ater soundness and remedy
any leaks discovered.
FILLING
OF
THE
D
.H.W
.
S
YSTEM:
Close all hot water draw-off taps.
Open the cold water inlet cock supplied with the
connection kit.
Open slowly each draw-off tap and close them only
when clear water, free of bubbles, is visible.
GAS SUPPL
Y
:
Inspect the entire installation including the gas meter,
test for tightness and purge the supply as described in
BS 6891:1998.
Open the gas cock (supplied with the connection kit) to
the appliance and check the gas connections on the
appliance for leaks.
WATER TREATMENT
The detailed recommendations f
or water treatment are
given in BS 7593:1992 (Treatment of water in domestic
hot water central heating systems); the following notes
are given for general guidance:
3. COMMISSIONING
3.1 INITIAL PREPARATION
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