Bedienungsanleitung ACV ETech W 36 (Seite 28 von 30) (Englisch)

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E-Tech W : 664Y6500 • B

COMMISSIONING AND MAINTENANCE

COMMISSIONING - WATER

1. The system must be thoroughly cleansed prior to connection

of the boiler. The system water should be treated to prevent

general corrosion and deposition of scale or sludge in the boiler,

please refer to BS7593. If installing the boiler into an existing

system, ACV recommend that an approved system cleaner is

used.

2. Fill and pressurise the boiler and system to 1.5 bar, making sure

to vent the boiler via the automatic air vent on top of the boiler.

Note that the black dust cap on the air vent should be left loose

to allow the auto vent to function.

3. Check for leaks.

4. For specialist advice on water treatment products, contact:

Fernox, Britannia Works

Clavering, Essex CB11 4QZ

Tel 01799 550811

COMMISSIONING - ELECTRICAL

The Electrical installation supplying this boiler must conform to the

current IEE Regulations.

1. Remove the front panel and check all electrical connections for

tightness.

2. Ensure all internal relays, contactors etc are secure on the DIN

rails.

3. Set all panel control switches to off.

4. Check the power stage delay timer settings - Adjuster (A)

is factory set to the 1 to 10 minute position which is the

optimum setting for the boiler and should be verified during

commissioning.

Adjuster (B) is used to set the DELAY ON time of the following

stage contactors, the available settings are in 1 minute

increments if A is set to 1 to 10 minutes.

This function is particularly useful in areas where gradual

switching of electrical load is required and the resulting

maximum demand kept to a minimum. The timers add to the

flexibility of the installation but must be optimised by a qualified

engineer. The normal setting is 1.

5. Set internal MCB to off position.

6. Set the control thermostat to desired temperature.

STARTING THE BOILER

1. Switch on the internal or external timeclock (if fitted).

2. Switch on internal MCB.

3. Switch on local isolator to boiler.

4. Turn the boiler on using the ON/OFF switch.

5. Switch on the power levels switch stage 1, the first stage

contactors will energise.

6. Switch on the power levels switch stage 2, after a short delay the

second stage contactors will energise. Note: the power stage

delay timer settings should be verified as shown in item 4 under

“Commissioning - Electrical”.

7. The boiler temperature will now rise as indicated by the

combined temperature and pressure gauge.

8. The temperature will continue to rise until the control thermostat

temperature setting is reached then the boiler will switch off.

Once these procedures have been followed the system can be left to

operate normally by the following method.

1. Ensure that boiler thermostat is set to the desired temperature.

2. Turn the boiler on using the ON/OFF switch.

3. Turn on power level switch 1.

4. Turn on power level switch 2.

5. Set timeclock (if fitted) and/or external controls to desired boiler

operating on/off times.

After one week of operation all electrical connections should be re-

checked for tightness and the boiler water system checked for leaks

and air and rectified if necessary.

MAINTENANCE

For safety reasons it is recommended that the boiler is serviced

annually and that servicing is carried out by a qualified service

engineer.

Before carrying out any work on the system ensure that

the boiler is cool and all electrical supplies are isolated.

1. After removing front cover undo the four screws retaining the

front control panel and gently let the panel suspend on the

wiring to the rear of the panel. Undertake a visual inspection

of the boiler looking out for signs of water leakage from joints,

expansion vessel, and the area around the elements on top of

the boiler.

2. Undertake a visual inspection of all cabling in the boiler casing

checking for signs of overheating or burning.

3. Check all push-on electrical connectors for tightness and good

connection to the relative components.

4. Using a correct fitting screwdriver check all electrical terminals

on DIN rails and on all components for tightness.

5. Check the settings on the internal timers in accordance with the

“Commissioning - Electrical” section.

6. Replace the control panel and the boiler front cover and refit

screws.

7. Reinstate the electrical supply and follow the procedures set out

in the commissioning section.

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