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COMMISSIONING
Initial preparation
Ariston Thermo UK Ltd support the benchmark initiative.
On pages 77 and 78 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.
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 efcient.
Filling the Heating System:
ATTENTION!!
CONNECT THE PIPE OF CONDENSATE DISCHARGE
BEFORE REFILLING AND THE DE-AERATION OF THE
HEATING CIRCUIT.
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;
Open the manual air vent positioned at the side of the primary
exchanger (2). The valve is already connected to a discharge
pipe related to the condensate trap.
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;
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.
importaNt!
maNually VeNt the heat exchaNger at the maNual air VeNt. failure
to VeNt adequately may damage the heat exchaNger (page 9, legeNd
2).
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.
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 (22mm on
38Kw) 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
appliances when they are in use at the same time.
Pipe work must be of an adequate size. The final pipe size
must not be smaller than the appliance inlet size.
Open the gas cock (supplied with the connection kit) to the
appliance and check the gas connection on the appliance for
leaks.
Water Treatment:
The boiler is equipped with a stainless steel 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,
Note: Failure to carry out the FlushiNg procedure will result iN the
warraNty becomiNg void.
2
32


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