2.14 Packaging
The heater will usually be supplied wrapped
in heavy gauge polythene, non assembled
parts will be supplied separately.
Prior to installation, the assembly of the
heater should be completed, it is advisable
that this is undertaken in the area where the
heater is scheduled to be sited.
CAUTION
It is strongly advised that when positioning
the heater the lifting eyes are used, thereby
reducing the risk of inadvertent damage
being occasioned to the heater.
2.15 Flooring
The heater must be installed on a level
non-combustible surface capable of support-
ing the weight of the heater and any ancillary
equipment.
2.16 Electrical Installation/connection
Cabinet heaters are available either for
415V 50Hz 3PH or 230V 50Hz 1PH supplies
depending upon the model specified.
The electrical supply must be as specified
and suitable for the heater, and must be
run within conduit to a point adjacent to
the heater, and be terminated to provide an
isolation point that will prevent remote or
inadvertent activation.
Cables, conduit, and fittings that are used to
make the connection between the isolator
and the heater must conform to the appro-
priate local and national regulations.
All heaters are supplied fused and pre-wired,
all must be earthed.
Final connections for any additional exter-
nal controls must be completed on site, and
must be carried out according to local and
national regulations. Separate user infor-
mation is provided for the time control unit
and the burner, and forms part of the product
information pack which accompanies every
heater when despatched.
WARNING
Always isolate from the mains electrical
supply before commencing work on the
heater.
Always ensure that the appropriate personal
protective equipment is used.
2.17 Air Distribution Installation
The materials selected must be of low heat
capacity, and it is preferable that all warm
air ductwork is thermally insulated.
Where ducting may be subject to deterio-
ration from exposure to moisture or high
humidity material selection and insulation
are prime considerations. Joints and seams
must be airtight and fastened securely and
designed to remain so, even when operating
at high temperatures.
Adequate support must be designed into
the layout of the ductwork to ensure that
the integrity of the seams and joints is main-
tained. The support must be independent
and separate from the heater and the ducting,
to allow for free movement during expan-
sion and contraction.
Where ducting passes through walls or
partitions sufficient clearance must be left,
irrespective of any fire stop requirement, to
allow for expansion and contraction. Failure
to adhere to these latter two points can
result in the generation and transmission
of excess noise. Where ducting is installed
in concrete flooring a permanent membrane
must be used to isolate the ducting from
the corrosive effect of the alkaline salts
within the concrete. Care should be taken
to ensure that soft insulation material does
not become compressed and thereby lose
its insulation effectiveness.
The following sub-assembly parts should be
assembled to allow installation to continue.
Vertical Nozzle Models
For free blowing applications it will be
necessary to complete the final assembly
before continuing with the installation.
The nozzles should be pushed home on the
spigots and positioned to provide the desired
airflow. When in the correct position fix in
place with drill screws.
• Ensure louvres are adjusted outwards and
ensure blades are not resonating.
• The nozzles should be securely fixed in
their desired position on completion of
commissioning.
CAUTION
Care should be taken when adjusting the
louvre blades on the outlet nozzles, closing
too many blades could lead to the heater
tripping on high limit. Should this occur
please reset the limit device and gradually
open nozzles until the heater no longer
trips. Please note that fully closing the
louvres on the nozzle above the limit
device should be avoided at all times.
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