Combustion Air Supply; Combustion Air Flue - Spartherm Mini R1V 51 Notice D'utilisation

3.4. COMBUSTION AIR SUPPLY

Open fireplaces may only be installed in rooms that have at least
one door that leads to the outdoors or a window that can be open-
ed, or are directly next to other rooms or indirectly part of an am-
bient air network. For installation in apartments or other facilities,
only rooms in the same apartment or facilities may belong
to the ambient air network.
Open fireplaces may only be set up or installed in the above-named
3
rooms if at least 360 m combustion air/hour and/m
chamber opening is able to flow into them. If other fireplaces are
in the rooms where this one is to be installed or in rooms that are
connected to it, according to technical regulations at least 540 m
2
combustion air/hour and /m of combustion chamber opening is able
to flow into all of the open fireplaces and at least 1.6 m
air/hour and /kW total nominal heat capacity into all other fireplaces
for a calculated pressure difference of 0.04 mbar to the outdoors. A
flow speeds of 0.15 m/s is a valid guideline value for dimensioning
the air supply ducts. For a fireplace with a door height of 52 60 cm,
this equals an air supply channel of 175 cm
of approx. 15 cm.
If the combustion air is not allowed to be removed from the room
(e.g. for buildings with ventilation systems), a coupling has to be
connected to the combustion air lugs on the device. This coupling
has to lead to a different room. (Make sure that this room has a
sufficient supply of air: talk to the building code inspector respon-
sible and observe DIN 18896 and the German Combustion Ordi-
nance). If this duct for the combustion air leads out of the building,
it required a cutoff device. The position of the cutoff device has to
be obvious. For this design, the inlet duct should be insulated to
prevent condensate from forming. And the duct should be positi-
2
of combustion
3
3 combustion
2 , therefore a diameter
GB 7
oned so that water and other substances are not able to penetrate
it and any condensate that does form can run off.
COMMENT:
For guidance on realizing a sufficient supply of combustion air, see
the the German Sample Combustion Ordinance (May 1998 version)
and the example of the standard operating procedure for the Ger-
man Sample Combustion Ordinance (January 1980 version); the ex-
amples were published in the Institute for Construction Technology
Bulletin no. 3/1980, 17th year (also see comments on DIN 1895).

3.5. COMBUSTION AIR FLUE

As per the specification of the German federal state construc-
tion ordinance that corresponds to § 37, para. 2 of the sample
construction ordinance, combustion air flues in buildings with more
than two full storeys and combustion air flues that bridge firewalls
must be constructed to prevent them from transferring fire and
smoke to other storeys or fire zones.
COMMENT:
For information on how to comply with the above-mentioned speci-
fications, see the fire inspection guidelines for the fire prevention
requirements of ventilation systems (draft) – January 1984 version.
GB