ventilation systems, and various types of
process plant.
Applications should be suspended centrally
over the area into which the warm air is to be
discharged .
2.1 Installation Mounting Heights and
Clearances
The Heater must be installed within the
mounting heights indicated below
The following heights in metres
On a level non-combustible surface capable
of adequately supporting the weight of the
unit and ancillary equipment .
2.2 Heater Mounting
The heater and flue must be adequately
supported by one of the following methods ;
a) Suspension by steel drop rods or straps
from the
M10
fixing points located on top of
the heater
These must be of sufficient strength to safely
carry the weight of the unit and ancillary
equipment. The straps may only drop
vertically to eyebolts, if used;
I.E
. They must
not be joined to the eyebolt at an angle to the
vertical, and eyebolts if used should be of an
approved type.
2.3 Warm Air Circulation
The air heater should be positioned to enable
maximum circulation of discharged warm air
within the area to be heated, whilst taking
account of personnel within the area,
sources of cold air ingress , and obstructions.
Ensure louvres are adjusted outwards
and ensure blades are not resonating
The air temperature rise on passing the heat
exchanger is typically around 34
0
C
A full and
unobstructed
return air path to
the air heater
must be
provided
(see 2.4 Air
Supply).
Where the heater is positioned to deliver
blown air through an opening in a wall, return
air intakes should be located so that they
cannot become blocked. Similarly these
intakes must be positioned so as not to draw
in odours, fumes, hazardous vapours or
particles.
2.4 Air Supply for Combustion and
Ventilation
Consideration
must be given to
the provision of
air for the
purposes of
combustion and
ventilation of the
