Installation and maintenance instructions ecoTEC 0020029172_03
24
6 Start-up
a
Caution!
The boiler may only be permanently operated
with its casing properly closed!
Otherwise, under unfavourable conditions, it
can result in material damage or even injury or
death.
h
Note!
When starting up particularly take the following
into consideration:
Before the heating circuit or charging circuit is
filled you must open the cap on the automatic
air vent which must remain open during
subsequent operation.
Use the bleeding program to bleed the heating
circuit or charging circuit (see Chapter 9.2).
6.1 Water
circulation
system
Detailed recommendations concerning the water circuit
system can be taken from BS 6798 and BS 5449, Part 1
(for "Small Bore” and "Micro Bore” central heating
installations). Lines which do not form part of the usable
heating surface should be insulated to prevent heat
losses and possible freezing up, especially where the
lines run under rooves and ventilated cellar rooms. The
drain connections must be easily-accessible, so that the
entire system including the boiler and hot water system
can be drained. The drain connections should be at least
1/2 " (BSP nominal size) and must be in accordance with
BS 2879.
The boiler is suitable for Minibore and Microbore sys-
tems. Water lines are to be copper pipes in accordance
with BS 2871, Part 1. These must be thoroughly cleaned,
especially when connecting a new boiler to an existing
system.
a
Caution!
To prevent deposition and severe damage to
the boiler and heating installation the cleaning
agent must be applied carefully and
subsequently removed from the heating
installation by draining it completely. Cleaning
agents should not remain in the heating
installation longer than 24 hours.
This cleaning process must take place before a new
boiler is fitted in accordance with BS 7593.
Recommendations on the use of system cleaning agents
can be obtained from Sentinel, Betz Dearborn Ltd.
Widnes, Cheshire, WA8 8UD, Tel. 0151 420 9595, or
Fernox, Cookson Electronics, Forsyth Road, Sheerwater,
Woking, Surrey GU21 5RZ, Tel. 01483 793200.
6.2 Filling
the
system
6.2.1
Preparation of heating water
a
Caution!
If anti-freeze inhibitors are to be used it has
been found that Sentinel X500 and Fernox
Alphi-11 have no known incompatibility issues
with our boilers. Vaillant cannot guarantee the
compatibility and effectiveness of these
products in the rest of the heating installation
and accepts no liability or responsibility for
damage caused by use on non-recommended
anti-freeze inhibitor products.
6.2.2 Filling and bleeding from the heating side
1
2
Fig. 6.1 Check the filling pressure of the heating installation
a
Caution!
Only fill the system via the boilers' built-in
combined filling and emptying valve as
otherwise problems may occur with bleeding
the system.
h
Note!
The ecoTEC is equipped with a pressure gauge
(1) and a digital pressure indicator. You can
display the precise filling pressure when the
boiler is switched on by pushing the "-" button
(2). You can also switch between the
continuous display of temperature or pressure
by keeping the "-" button pushed for about 5
seconds.
For the heating installation to work properly the
indicator on the pressure gauge (
1
) must be in the upper
half of the dark grey area when the system is cold (see
Fig. 6.1). This corresponds to a filling pressure between
1.0 and 2.0 bar.
6 Start-up
Summary of Contents for ecoTEC VU 466/4
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