Commissioning; Initial Preparation - Ariston microCombi 23 MFFI Installation And Servicing Instructions

3.

COMMISSIONING

3.1 I P
NITIAL REPARATION
MTS (GB) Limited support the
you will find a copy of the
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
their logbook 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.
F H S
ILLING THE EATING YSTEM
Lower the control panel and remove the case panels (see S
further information).
Open the central heating flow and return cocks supplied with the
connection kit (there are two isolation points on the return connection).
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 for water soundness and remedy any leaks
discovered.
F D.H.W. S
ILLING OF THE 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.
G S :
AS UPPLY
Inspect the entire installation including the gas meter, test for tightness
and purge the supply as described in BS 6891:1988.
Open the gas cock (supplied with the connection kit) to the appliance and
check the gas connections on the appliance for leaks.
When the installation and filling are completed, flush the system while cold,
refill, turn on the Central Heating system (S
temperature has reached the boiler operating temperature. The system must
then be immediately flushed through.
The flushing procedure must be in line with BS 7593:1992 code of practice
for treatment of water in domestic hot water central heating systems.
During this operation, we highly recommend the use of a central heating
flushing detergent (Fernox Superfloc or equivalent), whose function is to
dissolve any foreign matter that may be in the system.
Substances different from these could create serious problems to the
pump or other components.
The use of an inhibitor in the system such as Fernox MB-1 or equivalent is
strongly recommended to prevent corrosion (sludge) damaging the boiler
and system.
Failure to carry out this procedure may invalidate the appliance
warranty.
initiative. Within the information pack
logbook. It is important that this is
:
:
ECTION
2.11 for
ECTION
3.2) and run it until the
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