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E-Tech W : 664Y6500 • B
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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.
B
A
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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