Frico Thermozone AD 300 W Manual Del Usuario página 24

Thermozone AD300 W, AD400 W
GB
General recommendations
Carefully read this instruction manual before instal-
lation 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: IP20
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 door-
ways. 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 protec-
tion.
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 considera-
bly reduces the efficiency of the air curtain. Ventila-
tion 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 (AD320/420) mounting con-
soles are included with the air-curtain. The M6 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 on page 2-3.)
Fitted on the wall
1. Mount the consoles to the wall, 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 tightened
the nuts.
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Mounting in false ceiling
See fig. C on page 3.
Mounting with suspension kit (extra)
When using the brackets for pendulum fixing ADPF1
see fig. D on page 4 or ADPK1 see fig E on page 4.
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. Pres-
sure 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.