VEAB AC35 Assembly And Operating Instructions Manual
AC35
Installation and maintenance instruction
GB
for air curtains
IMPORTANT: Read these instructions before the product is installed and used.
Save the instructions for future use.....................................................................................................2
Ar t.nr: 172786-01
AC35
Assembly and operating instructions
Safety
• For all installations of electrically heated products
should a residual current circuit breaker 300 mA for
re protection be used.
• Keep the areas around the air intake and exhaust grilles free from possible obstructions!
• CAUTION! During operation the surfaces of the unit
can be hot!
• e unit must not be fully or partially covered with
clothing, or similar materials, as overheating can result
in a re risk! (E)
• e appliance can be used by children, aged from 8
years and above, and by persons (children included)
with reduced physical, sensory, or mental capabilities,
or lack of experience and knowledge, if they have been
given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards
involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made
by children without supervision.
Children, of less than 3 years of age, should be kept
away unless continuously supervised.
Children, aged from 3 years and less than 8 years, shall
only switch on/o the appliance, provided that it has
been placed or installed in its intended normal operating position and they have been giving supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved. Children,
aged from 3 years and less than 8 years, shall not plug
in, regulate and clean the appliance or perform user
maintenance.
General instructions
Read these instructions carefully before installation and
use. Keep this manual for future reference.
e product may only be used as set out in the assembly and
operating instructions. e guarantee is only valid if the product is used in the manner intended and in accordance with
the instructions.
Application area
e AC35 air curtain unit is supplied with electrical
heating or hot water heating. AC35 is intended for entrances and smaller doors up to 3.5 metres in height.
Protection class for units with electrical heating: IP20.
Protection class for units with water heating: IP21.
Operation
Air is drawn in at the top/rear of the unit and blown out
downwards/outwards so that it shields the door opening and minimizes heat loss. To achieve the optimum
curtain eect the unit must extend the full height/width
of the door opening.e grille for directing exhaust air
is adjustable and is normally angled outwards to achieve
the best protection against incoming cold air.
e eciency of the air curtain depends on the air
temperature, pressure dierences across the doorway and
any wind pressure.
NOTE! Negative pressure in the building considerably
reduces the eciency of the air curtain. e ventilation should
therefore be balanced.
Mounting
e air curtain range includes possibilities for horizontal
installation and for vertical installation and the units can
also be installed recessed into suspended ceilings.
Horizontal mounting
e air curtain unit is installed horizontally with the
supply air grille facing downwards as close to the door as
possible. Minimum distance from outlet to oor for electrically heated units is 1800 mm. For other minimum
distances, see g. 3.
For the protection of wider openings, several units can
be mounted next to each other using a joining kit
(g. 9).
Mounting with wall brackets PA34WB (g. 6)
1. 1. Remove the plastic covers on the
wall brackets.
(Fig. 6A)
2. 2. Mount the brackets on the wall according to
measures in g. 6B.
3. 3. Fasten the hammer head screws on the unit in
the
holes M8. (Fig. 5 and 6C)
4. 4. Lock the nuts so that the hammer head screws
are
at 20 mm height. Note the direction of the screw
heads. (Fig. 6C)
5. 5. Slide the unit on the consoles. (Fig. 6D)
6. 6. Lock the nuts against the bracket and put the
plastic
covers on again. (Fig. 6E)
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AC35
Horizontal mounting on the ceiling
readed rods, wire suspension kits and ceiling brackets
for ceiling mounting are available as accessories, see g.
7 and 8 and separate manuals.
Vertical mounting PL3JK
Units from 1,5 metres and longer may be used vertically.
For vertical mounting, all units must be supplemented
with a vertical kit containing everything needed for a
practical installation of oor standing units.
e unit can be reversed and placed on either side of the
door. Connections and PC Board PLS are positioned
near oor level when the air curtain is placed to the left
of the door and at the top when it is placed to the right
(seen from the inside).
e accompanying oor edging is attached to the oor
with fasteners appropriate to the surface.
Two units can be mounted directly on top of each other,
the oor edging is then used as a joining bracket.
e air curtain must be secured to wall or ceiling, use
PL3JK (accessory).
A design kit which gives a neater installation that
conceals cables and pipes is available as accessory, see
accessories pages.
See separate manual.
Electrical installation
e installation, which should be preceded by an omnipolar switch with a contact separation of at least 3
mm, should only be wired by a competent electrician
and in accordance with the latest edition of IEE wiring
regulations.
e control system is pre-installed in the air curtain with
an integrated control card, (see g. 2).
PLS is supplied pre-programmed with quick-t connections.
Modular cables are connected to the control board. See
manual for PLS.
Unit with water heating
Connected via the built-in PLS control board with
2 m cord and plug.
Unit with electrical heating
e installation is made on the top of the unit (horizontal) or on the reverse (vertical).
Control supply is 230V~ and cable is routed from the
built-in PLS control board.
Power supply for heating (400V3N~) is connected to
terminal block in the internal connection boxes. 2-metre
and longer units require dual power supplies. e largest
cable diameter for the terminal block is 16 mm². e
cable glands used must meet the protection class requirements. In the distribution board it is to be indicated that
”the air curtains can be supplied from more than one
connection”.
See wiring diagrams.
Type Output
[kW]
AC35-10-E08 8 400V3N~ 2,5
AC35-15-E12 12 400V3N~ 4
AC35 -20- E16
AC35-25-E20
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2 m and 2.5 m-units are connected with two power supplies, see p. 2. 2.5 meter units have electric batteries with two dierent eects, and the electric battery on the left, on a horizontal unit,
seen from inside the room, has the highest eect.
2
Dimensioning of external wiring shall comply with applicable regulations and local deviations
may occur.
1
8 / 8 400V3N~ 2,5 / 2,5
1
8 / 12 400V3N~ 2,5 / 4
Voltage
[V]
Minimum area 2
[mm2]
Start-up (E)
Note! When using for the rst 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.
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AC35
Connecting the water coil (W)
e installation must be carried out by an authorised
installer.
e water coil has copper tubes with aluminium ns and
is suitable for connection to a closed water heating system. Steel connection pipe. e heating coil must not be
connected to a mains pressure water system or an open
water system.
Note that the unit shall be preceded by a regulating
valve, see valve kits.
e water coil is connected on top of the unit (horizontal
mounting) or on the reverse (vertical mounting) via connections DN20 (3/4’’), external thread. Flexible hoses are
available as an accessory, see accessories pages.
e connections to the heating coil must be equipped
with shut o valves (included in valve kits) to allow problem free removal.
A vent valve should be connected at a high point in the
pipe system. Air valves are not included.
For vertical installation and bottom water connection it
is not possible to bleed the coil in the unit. Ensure that
the water coil is lled with water and that no air remains, prior to commissioning. See g. 4.
Our recommended solution is to use a T-connection and
shut o valves. Small air bubbles may remain, but will
disappear with normal operation.
NOTE: Care must be taken when connecting
the pipes. Use a wrench or similar to hold the
air curtain connections to prevent straining
of the pipes and subsequent water leakage
during connection to water supply pipe-work.
Filter (W)
e water coil is protected against dirt and blockage by
an air lter which covers the coil face. In environments
where the lter needs cleaning often, it is advisable to
use an external intake lter (see accessories pages), which
provides an easier maintenance, since the unit does not
need to be opened.
Service, repairs and maintenance
For all service, repair and maintenance rst carry out the
following:
1. Disconnect the power supply.
2. Loosen the screws and raise the front panel.
e front is blocked in open position with the front
hatch hook, see g 1A or removed completely, see
g. 1B. e service hatch is removed by loosening
the screws.
3. After service, repairs and maintenance fasten the
service hatch and the front. When the front has been
removed it is important to be sure it is rmly seated
in the front locks again, see g. 1B.
Adjustment of the air curtain and air ow
e direction and speed of the air ow should be adjusted considering the load on the opening. Pressure
forces aect the air stream and make it bend inwards
into the premises (when the premises are heated and the
outdoor air is cold).
e air stream should therefore be directed outwards to
withstand the load. Generally speaking, the higher the
load, the greater the angle that is needed.
Basic setting fan speed
e fan speed when the door is open is set using the
control. Note that the air ow direction and fan speed
may need ne adjustment depending on the loading of
the door.
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AC35
Maintenance
Unit with water heating:
e appliance lter should be cleaned regularly to ensure
the air curtain eect and the heat emission from the
device. How often depends on local circumstances.
A clogged lter is not a risk, but the appliance function
can fail.
1. Disconnect the power.
2. Loosen the screws and raise the front panel.
e front is blocked in open position with the front
hatch hook, see g 1A.
3. Remove the lter and vacuum clean or wash it.
If the lter is clogged or damaged, it may need to
be changed.
All units:
Since fan motors and other components are maintenance
free, no maintenance other than cleaning is necessary.
e level of cleaning can vary depending on local conditions. Undertake cleaning at least twice a year. Inlet and
exhaust grilles, impeller and elements can be vacuum
cleaned or wiped using a damp cloth. Use a brush when
vacuuming to prevent damaging sensitive parts. Avoid
the use of strong alkaline or acidic cleaning agents.
Overheating
e air curtain unit with electric heater is equipped with
an overheat protector. e overheat protection is reset by
turning o the switch and the unit cools. If it is deployed due to overheating, reset as follows:
1. Disconnect the electricity with the fully
isolated switch.
2. Allow the electrical coil to cool.
3. Determine the cause of overheating and rectify
the fault.
4. Connect the air curtain again.
All motors are equipped with an integral thermal safety
cut-out. is will operate, stopping the air curtain
should the motor temperature rise too high. e cut-out
will automatically reset when the motor temperature has
returned to within the motor’s operating limits.
Fan replacement
1. Determine which of the fans is not functioning.
2. Disconnect the cables to the relevant fan.
3. Remove the screws securing the fan and lift
the fan out.
4. Install the new fan as above in reverse order.
Replacing a electric coil (E)
1. Mark and disconnect the cables to the electric
coil package.
2. Remove the mounting screws securing the electric
coil package in the unit and lift it out.
3. Replace faulty electric coil.
4. Install the electric coil package in reverse order
to the above.
Replacing the water coil (W)
1. Shut o the water supply to the unit.
2. Disconnect the connections to the water coil.
3. Remove the mounting screws securing the coil
in the unit and lift the coil out.
4. Install the new coil in reverse order to the above.
Draining the water coil (W)
e drain valves are on the underside of the coil on the
connector side. It can be accessed via the service hatch.
Temperature control
Temperature control of PLS maintains the exhaust temperature to approx. +40 °C. If the temperature should
exceed anyway there is an overheating alarm. For more
information see the manual for PLS.
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AC35
Trouble shooting
If the fans are not working or do not blow properly, check
the following:
at the intake grille/lter is not dirty.
Check the functions and settings of the control system
PLS, see manual for PLS.
If there is no heat, check the following:
Check the functions and settings of the control system
PLS, see manual for PLS.
For units with electrical heating, check also the following:
Power supply to electric heater coil; check fuses and
circuit-breaker (if any).
at the overheat protection for the motors has not been
deployed.
For units with water coil, check also the following:
at the water coil is air free.
at there is enough water ow.
at incoming water is heated enough.
If the fault cannot be rectied, please contact a qualied
service technician.
Residual current circuit breaker (E)
When the installation is protected by means of a residual
current circuit breaker, which trips when the appliance
is connected, this may be due to moisture in the heating
element. When an appliance containing a heater element
has not been used for a long period or stored in a damp
environment, moisture can enter the element.
is should not be seen as a fault, but is simply rectied
by connecting the appliance to the mains supply via a
socket without a safety cut-out, so that the moisture can
be eliminated from the element. e drying time can
vary from a few hours to a few days. As a preventive
measure, the unit should occasionally be run for a short
time when it is not being used for extended periods of
time.
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