Vaillant ecoTEC plus SERIES Operating Instructions Manual - page 11
Operating instructions ecoTEC plus 0020124810_FT1b
11
4.3
Preparing for start-up
4.3.1
Opening the isolator devices
i
The isolator devices are not included in the
scope of supply of your boiler. The isolator
devices are fitted by your heating engineer on
site.
> He must explain to you the position and handling of
these components.
3
1
2
4
Maintenance taps
3 and 4 closed
Maintenance taps
3 and 4 open
Fig. 4.3 Open isolator devices (shown using the example
of service valves)
> Open the gas stop cock (1), by pushing the gas stop
cock in and turning it anti-clockwise.
> Check that the heating flow (3) and heating return
(4) service valves are open. This is the case if the
notch in the square on the service valve matches the
direction of the pipe.
If the service valves are closed, then you can open
the service valves using an SW 4 Allen key by rotating
a quarter turn anti-clockwise.
For unit type VUW:
> Open the cold water stop valve (2) by turning it anti-
clockwise as far as it will go.
4.3.2
Switching on the boiler
b
Caution!
Material damage caused by frost!
Frost protection and monitoring devices are
only active while the boiler is connected up to
the power supply.
> Do not isolate the boiler from the power
mains.
> Leave your boiler switched on at the on/off
switch.
To ensure that the frost protection and monitoring
devices remain active, switch your boiler on and off
using the controller (see the corresponding operating
instructions).
Section 8 describes how you can fully shutdown your
boiler.
1
2
Fig. 4.4 Switching on the boiler
> Press the on/off switch (1) to switch on the boiler.
If the boiler is switched on, then the current heating flow
temperature and other information will appear in the
display (2) (Fig. 4.2).
To set your boiler to suit your needs, read section 4.4
to section 4.6 which describe the setting options for
hot water production and heating mode.
Operation 4