Frico SWS Serie Montage- Und Betriebsanleitungen Seite 21

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.
SWS 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
SWS
detached terminal box, which is mounted on
a wall next to the unit (1 m cable).
The 400V3~ fan motor is connected
directly to the terminal box which is
positioned on the motor.
When a mixing cabinet or a filter section is
used, holes must be made in the casing for
connection cables.
The motor has a built-in thermal safety
cut-out to protect against overheating. This
will reset automatically once the motor has
cooled. For motor protection to fan heaters
with 400V3~ add Motor protection STDT16.
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.
Start-up
Note! When using for the first time or when
starting up after a long period of disuse, a
small amount of smoke and a slight odour
may occur temporarily, which is completely
normal.
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
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