ahlsell A Series, Assembly And Operating Instructions Manual

Page: 17 / 28

a-collection
17
GB
Mounting of the basic filter SWFT
The unit can be provided with a basic filter
to protect the heating coil (not included on
delivery). The top/bottom lid is opened, and
the filter is slid down behind the coil in tracks
for this purpose. The filter can be reached for
installation and cleaning/maintenance from
both top or bottom of the unit.
A-collection with the extra air director SWLR
The extra air director is mounted to the unit
by hooking it onto the existing air director.
Ceiling mounting
The unit, the mixing cabinet and the filter
section are mounted onto each other on the
floor and lifted up as one unit to be mounted
on the ceiling. The units should be mounted
together with screws or guides.
Connection of heating coil
The installation should be carried out by a
certified installer. By turning the fan heater,
pipe connections are possible on both sides.
Heating coil with copper pipes. Smooth pipe
connections for soldering or compression
fittings. For correct inlet and outlet
connection of the heating coil, see dimension
sketch.
Note! Be careful while connecting the pipes to
prevent pipe damage and water leakage.
The heating coil must not be connected to
a mains pressure water system or an open
water system.
Prior to use, the pipe system should be
ventilated. The air valve should
be connected on a high point in the pipe
system. Air and draining valves are not
included in the heating coil.
Units that are likely to be exposed to air
temperatures below zero, for example when
a mixing cabinet is used, should be equipped
with external frost protection to ensure that
the heating coil is not damaged by frost.
Electrical installation
The electrical installation should be carried
out by a qualified electrician in conformity
with prevailing regulations. The appliance
should be supplied via a triple-pole switch
with at least 3 mm breaking gap.
The 230V~ fan motor is connected to a
detached terminal box, which is mounted on
a wall next to the unit (1 m cable).
The motor has a built-in thermal safety
cut-out to protect against overheating. This
will reset automatically once the motor has
cooled.
Cable-glands used must guarantee the
protection class requirements.
After the electrical installation of the motor,
check the rotation of the fan. Seen from the
inlet side, the impellers should be rotating
anti-clockwise.
See wiring diagrams.
Maintenance
To ensure performance and reliabilty of
the unit, inspection and cleaning should be
carried out reguarly. Inspection should be
carried out at least twice a year. Clean the
unit when needed. During inspection the
power supply must always be disconnected.
Cleaning the fan
Cleaning intervals of the fan depends on filter
(if any) and air quality. When a filter section
with a deep-pleated bag filter is used and the
indoor air is of normal quality, the unit is
generally cleaned once a year. If the impellers
are not cleaned properly, vibrations/noise can
occur and severly damage the bearings. If the
vibration/noise remains after cleaning, please
contact a certified technician.
The unit, the mixing cabinet, the filter section
and the heating coil can be vacuumed from
dust.
When there are no accessories on the inlet
side, inspection of the fan can be made from
the outside of the unit. When the filter section
is used, inspection can be carried out by
the inspection door on the side of the filter
section. To inspect the fan when the mixing
cabinet is used (with no other accesories
on the inlet side), the mixing box must be
dismantled.