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ACV ETech W 28 Manual

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E-Tech W : 664Y6500 • B
en
6
EN
FR
NL
ES
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PL
RU
INTRODUCTION
US E R DATA
All user controls are situated on the front panel of the boiler, there are no user controls inside the boiler
casing.
The following instructions assume that the boiler has been commissioned, and that the system is filled
with water and has been fully vented.
SETTING UP
• Before switching on any electrical supplies to the boiler ensure that the combined temperature and
pressure gauge reads at least 1 bar and the control thermostat is set to the desired temperature.
• If an internal time clock is fitted ensure that this is switched on (see “Optional Internal Time Clock”)
and if any other auxiliary controls are fitted e.g. programmer, room thermostats, cylinder thermostats
etc, consult appropriate manufacturers’ instructions to switch these on.
• Switch on any local means of isolation to boiler.
• Switch the boiler on using the ON/OFF switch (the neon light on the switch should now glow).
• Turn on both power level switches - after a short period of time the boiler temperature should start
to rise, indicated by the combined temperature and pressure gauge. If the boiler fails to operate, the
overheat safety thermostat should be checked.
Access to the thermostat reset button is obtained by unscrewing (anti-clockwise) the domed button
cover on the front panel (a screwdriver is not required).The reset button can then be seen - press the
button, a click should be heard and the button is reset. If no click was heard the device is not at fault
and further investigation is required by a suitably qualified engineer.
• The internal clock or external programmer can now be set to allow on/off periods as desired.
The ON/OFF switch and 2 power level switches should be left in the ON position during normal use.
The power level switches will automatically switch on and off during normal boiler
operation, depending on boiler temperature.
• If the boiler is not in regular daily use during cold periods, it is recommended that it be fitted with a
frost sensing thermostat to override the timeclock and prevent the system from freezing.
• As with most boilers and heating appliances the casing and pipework can get hot during normal
running so the boiler must not be covered and the surrounding area must be kept clear.
OPTIONAL INTERNAL TIME CLOCK
• This operates on a 24-hour sequence. Around- the outside of the clock there are a number of white
tabs - these allow 15 minute switching times. To set a boiler cycle simply push outwards the number
of tabs required for your heating period.
Remember : Tab OUT = BOILER ON
Tab IN = BOILER OFF
The time of day is marked by an arrow on the inner part of the clock - set the outer time to coincide with
this arrow.
On the centre part of the clock there is a switch.
This has three positions :
• Switch down - time clock off
• Switch middle - time clock timed (normal position)
• Switch up - time clock on constant.
PRESSURE IN THE HEATING SYSTEM
The CH pressure must be a minimum of 1 bar and must be checked by the end user on a regular basis.
If the pressure drops under 0.5 bar, the integrated water pressure switch blocks the appliance until the
pressure in the system returns to a level above 0.8 bar.
The installer fits the system with a separate fill valve underneath the appliance. Make sure that the
appliance is powered off when filling the system. To do this, turn the on/off switch.
For more information, please ask your installer when the system is delivered.
A safety valve is provided underneath the appliance. If the system pressure exceeds 3 bars, this valve
opens and drains the water from the system. In this case, please contact your installer.
LEGEND
1. ON/OFF switch
2. Power levels switch
3. Optional internal clock or controller
4. Combined temperature and pressure gauge
5. Boiler shutdown indicator light
6. Manual reset high limit thermostat
7. Control thermostat :
1 = 15°C
2 = 30°C
3 = 45°C
4 = 60°C
5 = 80°C
… 6 …


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ACV ETech W 28 User Manual - German - 30 pages

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