24 RFFI SYSTEM

LEGEND:

1 - Fan

2- Main Heat exchanger

3- Ignition/detection electrode

4- Burner

5- Gas valve

6- Heating return temperature probe

7- Heating flow temperature probe

8- Silencer

9- Motorised valve

10- Automatic by-pass

11- Main circuit flow switch

12- Non-return valve (integral to Jig Kit)

13- Filling loop (integral to Jig Kit)

14- Indirect cylinder expansion vessel

15- Expansion relief valve

16- Drain valve

17- Safety valve (3 bar)

18- Pressure gauge

19- Circulation pump with automatic air release valve

20- Expansion vessel

21- Condensate trap inspection cap

22- Condensate trap

23- Condensate discharge tube

24- Condensate trap inlet

25- Injector

3. COMMISSIONING

3.1.INITIAL PREPARATION

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 us 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 3.2. for further information).

Open the central heating flow and return cocks supplied with the connection kit.

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 lower point and close it only when clear water, free of air, is visible.

Purge the air from the pump by unscrewing the pump plug and also manually rotate the pump shaft in the direction indicated by the pump label to ensure the pump is free.

Close the pump plug.

Continue filling the system until at least 1 bar registers on the pressure gauge.

Inspect the system for water soundness and remedy any leaks discovered.

FILLING OF THE D.H.W. SYSTEM:

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 it only when clear water, free of bubbles, is visible

GAS SUPPLY:

Inspect the entire installation including the gas meter, test for soundness and purge, all as described in BS 6891:1988.

Open the gas cock (supplied with the connection kit) to the appliance and check the gas connector on the appliance for leaks.

When the installation and filling are completed turn on the central heating system (sect. 3.4) and run it until the 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.

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Ariston 47-116-17 installation instructions Commissioning, Initial Preparation

47-116-17 specifications

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