2 Safety information
Cleaning opening in the flue gas pipe
–
To clean the flue gas pipe (e.g. removal of accu-
mulated fly ash) there must be an easily acces-
sible cleaning opening.
–
Recommendation: Coordinate the number and
placement of the cleaning openings with the chim-
ney sweep.
Opening for emissions measurement in the flue
gas pipe
Make an opening (hole) in the flue gas pipe to per-
form the prescribed emission measurement
Minimum draught requirement for boiler: 5 Pa
A draught stabiliser must be fitted if the specified
draught of 15 Pa is exceeded.
Install explosion damper
Abb. 2-1: Explosion damper integrated into draught limiter
i
Before longer horizontal pipe sections
(L>20xD) and at the high point before drop-
ping down the flue gas pipe, an explosion dam-
per must be installed, independent of the
boiler output.
For boiler outputs <50 kW, no explosion damper is
required (with short and rising flue gas pipe to the
chimney).
3.5 Supply air into the installation room
For Austria (according to standard H 5170):
–
For the supply air, 2 cm² per kW thermal output of
the fuel, but allow at least 200 cm² free cross-sec-
tion. (Fuel heat capacity = boiler capacity / effi-
ciency)
–
For the exhaust air, allow at least 180 cm² free
cross-section up to 100 kW nominal heat and an
additional 1 cm² free cross-section for every fur-
ther kW.
i
Calculate at least a further 20 % for wire mesh
in the aeration cross-section.
For Germany In accordance with the Model Firing
Ordinance:
–
For heating appliances with a nominal output of
up to 35 kW, a combustion air opening of at least
150 cm² or 2 x 75 cm² routed directly into the open
air must be provided.
–
Alternatively, a door/window leading outside and
a room content of at least 4 m³/kW nominal heat
output are suitable. If the Aufstellraum does not
abut onto an outside wall, combustion air supply
via connecting rooms is possible. Here, the com-
bustion air is supplied via a sufficiently dimen-
sioned adjacent room which abuts onto an
outside wall.
–
From 35 to 50 kW, provide a free aeration cross-
section
of
at
least
150
cm².
From
50
kW
upwards,
for
aeration
and
ventilation,
provide
a
minimum
free
cross-section
of
150
c
m²
for
each,
plus
2
cm²
per
KW
in
excess
of
50
kW.
i
Calculate at least a further 20 % for wire mesh
in the aeration cross-section.
Boiler
power
[In kW]
Minimum space [in cm²] including 20%
surcharge for grids
Austria
Germany Switzerland
Supply
air
Exhaust
air
Supply
air/Exhaust
air
Supply air
20 kW
>240
>216
>180
>206
25 kW
>180
>258
35 kW
>180
>361
50 kW
>228
>515
70 kW
>228
>721
90 kW
>276
>927
130 kW
>347
>252
>372
>1339
200 kW
>533
>336
>540
>2060
400 kW
>1067
>576
>1020
>4120
3.6 Room sealed appliance (RSA)
i
A room sealed operation of the
ecotop
zero/-
light
is optionally possible. The connection for
the supply air line is integrated in the boiler as
standard
Basic information
In conventional boiler rooms, the necessary supply
air openings from outdoors lead to uncontrolled heat
loss. This is prevented by using boilers that operate
independent of the room air, as the combustion air is
drawn directly into the boiler in from outside in sealed
supply air lines.
Installation manual
ecotop-zero, ecotop-light
7
