Ariston 41-116-07 installation instructions Commissioning, Domestic HOT Water Priority KIT

3.2DOMESTIC HOT WATER PRIORITY KIT

Boiler

Cylinder

Contract STI 125 Indirect

Comfort STI 125 Indirect

Contract STI 150 Indirect

Comfort STI 150 Indirect

Contract STI 210 Indirect

Comfort STI 210 Indirect

Contract STI 300 Indirect

SB 125 Indirect

SB 150 Indirect

SB 200 Indirect

microSYSTEM 21 RFFI

microSYSTEM 28 RFFI

The microSYSTEM is able to be connected to a specially designed kit for the management of D.H.W. production. This kit gives priority to production of D.H.W. unlike traditional systems where the boiler power is split between C.H. and D.H.W. This generally enables a smaller storage cylinder to be chosen as the boiler’s full output will be channelled into the cylinder allowing for a quick heat-up.

The kit (ARISTON part number 706329) can be obtained from an ARISTON supplier.

The kit consits of:

1)Electronic module able to plug into the boiler’s P.C.B;

2)3-way priority valve with actuator for connection to the boiler’s flow outlet;

3)A limit thermostat (80˚C) to check the water temperature of the heating flow to the cylinder, to be installed within the boiler;

4)Pipes and accessories.

TABLE 3.2

4.COMMISSIONING

4.1INITIAL PREPARATION

= Ideal

= Possible

MTS (GB) Limited support the initiative. Within the information pack

you will find a copy of the logbook. 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

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.

FILLING THE HEATING SYSTEM:

Remove the panels of the case and lower the control panel (see section 3.3 for 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 it only when clear water, free of air, is visible.

Purge the air from the pump by unscrewing anticlockwise and removing the pump plug and 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 leaks and remedy any leaks discovered.

GAS SUPPLY:

Inspect the entire installation including the gas meter, test for soundness 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.

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