Combustion air can be supplied from different sources:
a.)
air from the heated space,
b.)
fresh outside air drawn in by the blower and conveyed by the ducting (LAS system)
The air in the heated space cannot be used as combustion air if the bulding has a negative
pressure and the atmosphere is contaminated with aggressive vapours, acid fumes, corrosive
substances, dirt, oil, etc, which would have an adverse effect on the blower and the ducting.
7.
EXHAUST GAS EXTRACTION
According to
Worksheet 904
of the Central Association of Chimney Sweepers and the
StandardEN 13410
, exhaust gas can be extracted in the following ways:
Basic method recommended by us:
exhaust gas extractionfor each appliance as a LAS
system (see figure below), DN 100/150
Indirect exhaust gas extraction using roof or wall blowers with a minimum capacity of
10m³/h/kW.
Natural venting (air change >1.5/h or less than 5W installed capacity per hall volumem³)
In case of excessive condensation, condensate should be conveyed in additional drains or
operate the burner for the required time (e.g. modification of hysteresis).
The exhaust gas extraction of the tube radiant heater has to be discussed preliminary
with the competent regional chimney sweeper. Authorization number of exhaust gas
extraction:
0432-BPR-119933
Exhaust gas / fresh air extraction IT-DR LAS DN 100/150
Mount extensions here, if required
The customer is responsible for breaking through the roof. It is usually done by a tilesetter.
Flexible roof insulation ‘Ejot’ or universal roof hole with flanged disc can be supplied as an
accessory. Depending on the roofing, further connecting pieces can be ordered from the
tilesetter company.
11
Summary of Contents for IT-DR OMEGA
Page 12: ...12 ...
