Commissioning; Initial Preparation; Electricity Supply; Filling The Heating System - Ariston CLAS HE R 12 Installation And Servicing Instructions

Initial preparation

MTS (GB) Limited support the benchmark initiative.
On pages pages 61 and 6 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 efficient.

Filling the Heating System:

Close all air release valves on the central heating
system;
Open system
Fill the boiler system via the feed and expansion
tank.
Sealed 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;
Inspect the system for water tightness and remedy
any leaks discovered.

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 isolating
valve.
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. Pipes of less
than mm should not be used, final connection
being 15mm.
Open the gas isolating valve (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 7593:199 (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 and
refilled; the flushing procedure must be in line with
BS7593:199.
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 AiluRe to cARRy out the FlushiNg pRoceduRe will
Result iN the wARRANty becomiNg void

commissioning

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