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4. commissioning
4.1 Initial preparation
Ariston Thermo UK Ltd support the benchmark initiative.
On pages pages 57 and 58 of this manual the Benchmark
Commissioning Checklist and Service interval Record can be
found. It is important that this 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.
Preliminary electrical system checks to ensure electrical
safety must be carried out by a competent person i.e.
polarity, earth continuity, resistance to earth and short
circuit.
4.1.1 Electricity supply
- Check that the voltage and frequency of the electricity supply
correspond to the data shown on the boiler data plate;
- Make sure that the earthing connection is effi cient.
4.1.2 Filling the Heating System:
Switch the electrical supply to the boiler on in order to view
the system pressure on the display;
Remove the front casing panel and lower the control panel as
described on page 15).
Open the central heating flow and return cocks supplied with
the connection kit;
Lift the cap on the automatic air release valve and leave open
permanently;
Close all air release valves on the central heating system;
Gradually open the valves at the filling point (filling loop) 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
anti-clockwise, 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 for water tightness and remedy any leaks
discovered.
I
!
MPORTANT
M
ANUALLY VENT THE HEAT EXCHANGER AT THE MANUAL AIR VENT
TO VENT ADEQUATELY MAY DAMAGE THE HEAT EXCHANGER
4).
4.1.3 Filling of the DHW System:
Close all hot water draw off taps;
Open the cold water inlet cock supplied with the connection
kit;
Slowly open each draw off tap and close them only when
clear water, free of bubbles, is visible.
4.1.4 Gas Supply:
Inspect the entire installation including the gas meter
and test for tightness. The entire installation should be in
accordance with the relevant standards. In GB this is BS 6891
and in IE this is the current edition of I.S.813.
The connection on the the appliance is a 15mm nut and olive
located at the rear of the gas service cock.
If the gas supply serves other appliances, ensure that an
adequate supply is available both to the boiler and the other
28
appliances when they are in use at the same time.
Pipe work must be of an adequate size. Pipes of less than
22mm should not be used, final connection being 15mm.
Open the gas cock (supplied with the connection kit) to the
appliance and check the gas connection on the appliance for
leaks.
4.2 Water Treatment:
The boiler is equipped with an aluminium heat exchanger.
The detailed recommendations for water treatment are given
in BS 7593 (Treatment of water in domestic hot water central
heating systems); the following notes are given for general
guidance;
If the boiler is installed on an existing system, any unsuitable
additives must be removed;
Under no circumstances should the boiler be fired before the
system has been thoroughly flushed; the flushing procedure
must be in line with BS7593.
Firstly fill the central heating system with the power off, and
flush through cold, fill the central heating system again,
adding a flushing detergent, run the boiler on central heating
until it reaches its operating temperature and flush the
system, refill the system with a suitable corrosion inhibitor,
N
: F
OTE
WARRANTY BECOMING VOID
. F
AILURE
(
7,
PAGE
LEGEND
AILURE TO CARRY OUT THE FLUSHING PROCEDURE WILL RESULT IN THE
.
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