Frico Thermozone AC 500 Instructions For Installation And Use Manual page 10

GB
Instruction for installation and use
Are of use
The Frico Thermozone AC 500 is an air curtain
intended to be installed above industrial- and
warehouse doors of 3,0 —6,0 meters height. The
air curtains efficiency is depending on the load of
the door. Protection class IP24.
Function
The air intake is positioned at the top of the unit
and blown with high velocity through a honeycomb
lattice which results in a strong and laminar air
stream. The air curtain consists of 2 or 3 powerful
diagonal fans which are mounted in an air stream
channel. The housing is made of galvanised steel
covered with grey enamel. The air stream protects
the opening and minimises hot/cold leakage
through the open door. Insects, dust and exhaust
fumes are also prevented from entering the
building. The deflectors that are fitted on both
sides of the outlet can be used to direct the air
stream up to ±15°. It is always better to tilt the
complete unit if possible. The airflow will be
controlled by a fan regulator, placed in a separate
box.
NB! under-pressure in the building will
significantly reduce the effectiveness of the air
curtain. Ventilation ought to be balanced.
Mounting
Thermozone air curtains are in general mounted
on the inside of the door and as close to the
opening as possible. When they are supposed to
protect a cold store they should be mounted on the
warm side of the opening. To cover the entire
opening the units must be placed as close as
possible to each other. If possible tilt the units
towards the opening.
Suspension brackets are included, with which the
air curtain can be hung from overhead beams /
ceiling or with which they can be screwed to the
wall.
A) Mounting on overhead beams or in the
ceiling
1. A heavy-duty beam is to be mounted in a
suitable position above and along the door
opening. The air curtains can also be mounted
to the ceiling, however it may then be
difficulties to access the connection box.
2. Fit the suspension brackets on the ends of the
air curtain. (Fig 1.)
3. Check the c-c distance between the suspension
bracket's fixing holes. Measure and drill holes
(for 10 mm bolts) in the appropriate positions
on the beam/ceiling
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Thermozone AC 500
4. Lift up the air curtains one by one and bolt in
position. Tilt the unit outwards against the door
and tighten the screws. (Fig 2.)
5. Mount the fan regulator in an appropriate place
on the wall.
6. Carry out the electrical connection.
B Mounting against a wall
1. Fit the suspension brackets on the rear side of
the air curtain. (fig 3).
2. Check the c-c distance between the suspension
bracket's fixing holes. Measure and drill holes
(for 10 mm bolts) in the appropriate positions
on the wall.
3. Lift up the air curtains one by one and hang the
key holes of the brackets on the bolts. Secure
using 6 mm screws so that the units cannot be
unhooked again. Tilt the unit outwards against
the door and tighten the bolts.
4. Mount the fan regulator in an appropriate place
on the wall.
5. Carry out the electrical connection.
Electrical installation
The electrical installation must be carried out
according to existing regulations and by an
authorised electrician. The unit must be preceded
by an all-pole switch. There are many different
ways to regulate the fan speed. The connections
will be found in the wiring diagrams. Use
appropriate conduit to secure the protection class.
Adjusting the air curtain.
The direction of the air stream and the velocity of
the air is to be adjusted depending on the situation
in the opening. Wind-pressure and under-pressure
depending on different temperature have a
negative effect on air curtains and wants to bend
the air stream inwards the opening. To compensate
for that the air stream is to be directed outwards.
NB! under-pressure in the building will significantly
reduce the effectiveness of the air curtain.
Ventilation ought to be balanced.
1. Air stream
Make sure the air directors are placed in a parallel
way. Depending on the situation in the opening tilt
the unit outwards against the door. Found by
experience the recommendation is 10-15° towards
the opening. When the air curtains are used to
protect a cold storage rooms they should be
mounted on the warm side and with the air stream
directed 10-15° towards the warmer side.
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