Hoval TopGas 35, Техническая информация Инструкции по установке

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MONTAGE
4.2 Boiler installation room
Hoval heat output boilers series TopGas
®
(35,45,60) can
be combined with flue gas pipelines which
a) extract the combustion air from the boiler installation
room (room air dependent gas firing location)
b) extract the combustion air from the outside via a
closed system (room air independent gas firing)
The boiler installation rooms must satisfy the locally ap-
plicable regulations (firing regulation, fire service regula -
tions), in particular the requirements according to:
- SVGW- Leitsätze
- DVGW - TRGI 86-96
must to be noted an complied with.
With room air dependent operation, care is to be taken
that the combustion air is free from impurities (dust, build -
ing materials...) and aggressive substances (halogens
such as chlorides, fluorides etc.). The gas boiler should
not be connected to the gas supply or put into operation
whilst building work is still in progress.
4.3 Installing the boiler
The Hoval TopGas
®
(35,45,60) is delivered as follows.
Carton: Boiler; cladding components, installation and op -
erating instructions.
NOTICE
The boiler must not be placed on its connec-
tor elements.
Mount the boiler to the wall at the planned location. Dis-
tance from the side: at least 5 cm; distance from the
ceiling: the necessary distances are to be observed ac-
cording to the type and dimensions of the pipelines for
combustion air and flue gas.
Please note dimensions and instructions in
the drawings in section 3.3.
4.4 Hydraulic connection
The Hoval TopGas
®
(35,45,60) is suitable for flexible op -
eration (room temperature control or weather-supported
boiler and heating control) temperature limiting.
For suitable hydraulic connections, please note the in -
structions in the Hoval project planning documentation.
NOTICE
When modernising an old heating system
with an open expansion tank, this is to be
converted to a “closed” heating system with a
diaphragm expansion tank and safety valve.
4.4.1 Protection planning guidelines
for the hy draulic connection
• The installation of a sludge collector in the boiler return
is recommended (ensure correct dimensioning).
• An adequately dimensioned expansion tank must be
provided.
• The minimum pre-pressure in the expansion tank must
be 1,2 bar and the working pressure in the heating boil -
er must be 1,5 bar.
• The pump is to be connected in the boiler return and
the expansion tank in the suction side of the pump.
• If the system pressure cannot to be reached (e.g. roof
central heating plants), the expansion tank must be in -
stalled in the flow line. (Note: starting from 70 °C an
ad ditional connecting tank is necessary).
• Plants with
- continuous oxygen intake (e.g. underfloor heating
systems without diffusion proof plastic piping) or
- intermittent oxygen intake (e.g. where frequent refill -
ing is necessary)
must be equipped with separate circuits.
We also recommend the conclusion of a main-
tenance contract!
4.4.2 Boil-dry safeguard
To safeguard the boiler against low water levels or wa-
ter deficiency, a water pressure deflector is installed as
standard in the flow distributor (AMP connector at posi -
tions 1 and 3). If water pressure is lower than 1 bar pow-
er disconnection takes place (indication „P27“). Please
check the system pressure and top up with water as re-
quired.