Frico Thermozone AD300 W Serie Bedienungsanleitung Seite 12

Thermozone AD300 W, AD400 W
General recommendations
Carefully read this instruction manual before
installation and use of the AD 300/400W unit.
Keep these instructions in a safe place for future
reference.
Application area
The Thermozone AD 300/400W air curtains are
intended for stationary/permanent installation
above entrances and smaller doors with a height
from 2 up to 4.5 meters, but can also be used for
industrial heating and drying. The AD 300/400W
has been designed for connection to a low-
pressure hot water supply. The unit can be
mounted above a doorway or recessed into a
ceiling.
Protection class: IP21
Operation
The air is drawn in at the top of the unit and
blown out at high velocity across the doorway,
providing a protective air shield. The air shield
minimises cold draughts and reduces heat loss
through open doorways. For best efficiency, the
air curtain(s) should cover the whole width of the
opening.
The air director/grille is adjustable and is
normally angled outwards (5-10°) to achieve the
best protection.
The airflow can be adjusted by use of the fan
speed selector (CB30/221AG)
The efficiency of the air curtain(s) depends on
the air temperature and pressure differences
across the doorway and any wind pressure.
NOTE! Negative pressure in the building
considerably reduces the efficiency of the air
curtain. Ventilation should therefore be
balanced.
Mounting
The units may only be installed horizontally
over a doorway with the air-stream directed
downwards. For the protection of wider
doorways, several units can be mounted next to
each other.
For optimal performance it is recommended that
a minimum gap of 120mm is maintained above
the air-curtain.
The units can be fitted to the wall or suspended
from the ceiling. Two or three mounting
consoles are included with the air-curtain.
NOTE: all 1,5 m wide units must be fixed using
three points of attachment (one on each side
and one in the middle), when suspended from
the ceiling or mounted on the wall.
The M8 bolts (2 or 3) which slot into the to the
aluminium profile on top of the unit can slide
sideways, allowing the consoles to be mounted
at different distances from each other.
(see details page 2.)
Fitted on the wall or beam
1 Mount the consoles to the wall/beam, see fig. A
or B, page 3
2 Loosen the nuts on the upper side of the air
curtain to be able to fit the consoles between
the nut and the unit.
3 Mount the unit on to the consoles and tighten
the nuts.
Suspended from the ceiling
1 a Mount the consoles to pendulums (ordered
separately) to obtain a suspension from the
ceiling. (See fig. C on page 3)
2 a Threaded bars and nuts for this kind of
mounting are not included in the delivery.
1 b Use the suspension set ADPK1, see fig D on
page 3.
Electrical installation
The air-curtain(s) should only be wired by a
competent electrician, and in accordance with the
latest edition of IEE wiring regulations.
1 Remove the front plate by pressing a
screwdriver or similar in to the two holes (Ø
5 mm) underneath the edge of the front plate.
Press until it clicks and the front plate can be
opened and removed. See Fig. on page. 3
2 Remove the lid of the connection box by
removing the two screws placed on the right
side of the unit. Remove the knockouts on top
of the unit (4xØ23mm) for routing of electrical
supply and remote switching cables.
Different combinations of fan speed and heat
output are detailed in the wiring diagrams on
pages 4-6.
Adjusting the air curtain and air stream
The direction and the velocity of the air stream
should be adjusted in regard to the load on the
doorway. Pressure forces the air stream to bend
towards the interior of the room (when the room is
heated and the exterior is cold).
The air stream should be directed outwards to
resist the pressure. An angle up to 15° is
recommended. THe more load caused by
negative pressure, temperature differences and
wind, the more should the air beam be directed
outwards.
Basic air flow settings
The air flow is set with the air flow selector so that
the speed of the air is 3-4 m/s 1m above the floor.
The direction of the air beam and the air speed
may need to be adjusted more exactly depending
on the load on the door.
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