As to the installation of the units, the respective security specifications and valid directions of your country
have to be observed.
Where to install the heater
Before you choose the place where the heater will be installed, make sure that your requirements do not work
against:
a) fire protection
b) function (e.g. room heating, with plenum or ducting system, low or high pressure at the place of
installation...)
c) specific requirement (heat demand, air delivery, demand of outer or ambient air, air humidity, room
temperature, air distribution, necessary space…)
d) connection to the chimney
e) possibilites of doing installation, repair and maintenance
f) relation of room volume to rated heating power, especially in naturally ventilated rooms
The natural air delivery is sufficient for the combustion if for example the room volume in m³ is
equivalent to the 10-fold rated heat load in kW of all heating units in the room and if the windows
and doors assure a natural ventilation.
Good and natural ventilation means for example:
1. the room volume in m³ is at least equivalent to the 30-fold rated heat load of all heating units in
the room and the doors and windows assure a natural ventilation. OR:
2. the room has got openings for supply air and exhaust air near floor or ceiling which cannot be
closed and whose size corresponds to the 0,0003-fold rated heat load in kW of all heating units
in the room.
Suction of comburstion air:
The combustion air should be free of any harmful substances. If, due to production process,
harmful substances (such as chloride, CKW, FKCW etc.) appear which could reach the warm air
heater, the combustion air for the burner must be taken from outside and a burner case has to be
used (see accessories).
A sufficient supply of combustion air is assured if it is taken in from:
- the room where the warm air heater is installed if this room meets the requirements to the
relation of room volume to total heating efficiency (4 m³ / kW) according to the construction
supervision);
- the room where the warm air heater is installed if it is heated by the warm air heater driven by
outside air or secondary air with a granted rate of outside air; there has no fixed relation
between room and power to be observed;
- the room where the warm air heater is installed if it has got openings to outside which cannot be
locked up, according to the requirements of construction supervision;
- the outside through a pipe connected to the burner (or its housing) whose profile is large
enough; it must be adapted to the available throughput of the burner and the line
resistances (including the suction protection grill) in order to grant a perfect combustion.
Installation notes
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