Ariston 47-166-32 Benutzerhandbuch, Installations- und Wartungsanweisungen - Seite 25

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COMMISSIONING

7.1

Initial Preparation

Preliminary electrical system checks to ensure electrical safety

must be carried out by a competent person i.e. polarity, earth con-

tinuity, resistance to earth and short circuit.

ILLING THE

EATING

YSTEM

Lower the control panel and remove the case panels (see

6.11 for further information).

ECTION

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) connec-

tion 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.

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 them only when clear

water, free of bubbles, is visible.

Gas Supply:

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 (Section

7.2) and run it until the temperature has reached the boiler oper-

ating 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 prob-

lems 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 appli-

ance warranty.

Supplied By www.heating spares.co Tel. 0161 620 6677

7.2

Initial Start-up

HE CHECKS TO BE RUN BEFORE INITIAL START

1. Make sure that:

- the screw on the automatic air valve has been loosened when

the system is full;

- If the water pressure in the system is below 1 bar, bring it up

to the appropriate level;

- Ensure that the gas cock is closed;

- Make sure that the electrical connection has been made

properly and that the earth wire is connected to an efficient

earthing system;

- Supply power to the boiler by pushing the On/Off button "A"

(see F

. 6.16) - the L.E.D. "K" will illuminate. Then push the

button "F" in for central heating - the L.E.D. "G" will illumi-

nate. This will start the circulation pump. After 7 seconds, the

boiler will signal a shutdown due to ignition failure. Leave the

boiler as it is until all of the air has been bled from the sys-

tem.

- Loosen the cap on the head of the pump to eliminate any air

pockets;

- Repeat the procedure for bleeding the radiators of air;

- Open the taps for a brief period;

- Check the system pressure and, if it has dropped, open the

filling loop again to bring the pressure back up to 1 bar.

2. Make sure that all gate valves are open;

3. Turn on the gas cock and check the seals on the connections

with an approved soap solution and eliminate any leaks.

4. Press the reset button "I" for the lighting system; the spark

will light the main burner. If the burner does not light the first

time, wait 1 minute and repeat the procedure.

5. Check the minimum and maximum burner pressure values;

adjust if needed using the values indicated in the table in

ECTION

7.3

Operational Adjustments

To access the areas in which adjustments are made, it is neces-

sary to open the control panel, as indicated in Section 6.11, then

remove the rear inspection cover by unscrewing the two screws.

Access is thereby provided to the P.C.B. and to the following com-

ponents:

1. The power supply cable connector;

2. The fuses;

3. The soft-light potentiometer the setting for which can range

from the minimum thermal power to the maximum;

4. The maximum thermal heating power potentiometer

adjustable by the minimum to maximum power (already cali-

brated in the factory to 70% of the maximum thermal power);

5. The jumper for adjusting the ignition delay (anti-cycling) fea-

ture, which can be set from 0 to 2 minutes (set in the factory

at two minutes);

6. Fan/Pump Over-run (Electrical Diagram). When the jumper is

set to position A the Fan and Pump over-run is activated. (The

jumper is factory set in position B)

7. The time clock connector.

UP ARE AS FOLLOWS