3 Technical requirements
3.3 Installation room
Structural specifications
–
The boiler may only be installed in a dry, frost-free
room; the permissible room temperature is 5 to
30°C.
–
The boiler may only be used on a non-com-
bustible surface with sufficient load-bearing capa-
city.
–
Observe spacing to combustible materials (regio-
nal regulations).
–
Note the installation dimensions to ensure suf-
ficient space is provided (e.g. for service and
maintenance work).
–
For normative requirements, see ÖNORM H 5170
and directive TRVB 118 H.
Fire extinguishers
–
Austria: A 6 kg ABC powder extinguisher is spe-
cified as the minimum requirement. Install it out-
side the boiler room in an easily visible and
quickly accessible place.
–
Germany, Switzerland: In private homes, no fire
extinguisher is required for heating systems.
However, having a fire extinguisher is recommen-
ded.
Keep escape routes clear
–
The installation of fireplaces under staircases, on
emergency exit routes and in attics that have not
been extended is not permitted.
3.4 Chimney, flue gas pipe
Chimney cross-section and chimney height
The necessary cross-section depends on the nominal
output of the heating system and the effective chim-
ney height (at least 6.5 m). Recommendation: Have
the chimney dimensions calculated by qualified per-
sonnel.
Chimney
–
The chimney must be resistant to moisture. Use
fire brick or stainless steel.
–
The chimney must conduct away the flue gases
reliably at all times.
Connect the chimney condensate drain to the
sewage system
–
Connect the condensate drain line of the chimney
to the domestic sewage system (to drain con-
densate, rainwater).
–
Use DN 25 diameter pipe, install siphon.
Provide each boiler with its own chimney
–
The boiler and the chimney must be compatible
with each other. This is the only way to ensure the
proper functioning of the heating system and the
correct discharge of the flue gases.
–
If there is only one chimney available for two boi-
lers there is a risk of them not being compatible
(considering the different operating states of the
boilers - full load/partial load). This can lead to pro-
blems (e.g. the flue gas has too little energy
during the ascent, and does not lift off sufficiently
from the chimney mouth, ...odour pollution by flue
gases).
–
Chimneys with just one device are more reliable
and safer than chimneys with multiple devices.
Do not connect a gas boiler and blower boiler to
the same chimney
Do not connect a wood-burning stove and
blower boiler to the same chimney
–
A wood-burning stove typically requires a larger
chimney diameter than the blower boiler.
–
Acoustic disturbance from the blower boiler may
be possible in the living room (by the wood-
burning stove).
–
Unnecessary risk due to gas leakage, e.g. if the
blower boiler is defective.
6
Installation manual
maximus L
