Exterior Wall Hood; Existing Ventilation; Serving More Than One Room; Extract Air Intake - Swegon COMPACT Air Installation And Maintenance Instructions Manual

3.7 Exterior Wall Hood

The CACZ-1-03 External wall hood accessory is specially
designed for low pressure drop and for preventing short-
circuiting between the outdoor air and the exhaust air.
The standard hood is painted grey black, NCS 8502-B. See
special instructions.

3.8 Existing Ventilation

The existing ventilation in the room for supply air and
extract air should be blanked off or sealed. This is an
important prerequisite for satisfactory ventilation and heat
recovery.

3.9 Serving More than One Room

The COMPACT Air units are designed for installation and
connection according the instructions in Sections 3.3, 3.6
and 3.7.
Swegon recommends this procedure.
Nevertheless it is possible to completely or partially take
extract air from adjacent rooms or also to ventilate a space
other than the room where the air handling unit is stand-
ing.
The problems, which one must observe in this case, are
specifi ed below. Always engage the services of a profes-
sional in this fi eld.

3.9.1 Extract Air Intake

If the extract air is completely or partially taken from an
adjacent room, note that the duct pressure drop must not
exceed available pressure.
Also note that the supply air temperature is regulated in
relation to the extract air temperature. If the extract air
comes from another room with a different temperature,
the temperature of the supply air may cause short-circuit
airfl ows or give rise to draught problems. Pay special at-
tention to where the extract air sensor is located.

3.9.2 Transfer Air

Transfer air grilles to adjacent rooms have a strong infl u-
ence on the system's performance.
Air transfer grilles positioned low, cause the transfer of
"unused" air to adjacent rooms and impair the ventilation
performance in the room where the unit is installed.
Air transfer grilles positioned high involve the risk that
"used" air will be transferred to adjacent rooms. Ventila-
tion is however not impaired in the room where the unit is
installed.
Important! If the doors are open, the adjacent room will
also be ventilated due to the displacing air supply.
Registered design. The company reserves the right to make design changes without prior notice.

3.10 Connection to the Electric Power Grid

The COMPACT air handling unit is supplied with a power
cable with mains plug, from the factory.
COMPACT Air
Cable: 3 x 1.5 mm 2 . Mains plug, 10 AT, single-phase 230V.
COMPACT Heat
Cable: 5 x 2.5 mm 2 . Mains plug, 5-wire Perilex, 16 AT,
3-phase 400V.
Important! The power supply connection to the COM-
PACT Heat unit is not of an electrical safety design that
prevents children from inserting objects into the socket. It
is recommended that it be positioned 2 metres above the
fl oor above the air handling unit by the duct connections
for instance.
If the air handling unit is instead to be connected with a
fi xed extension, an external main switch must be fi tted.

3.11 To Connect External Cables

The electrical cubicle in the COMPACT Air and the COM-
PACT Heat units is located by the heat exchanger. When
access to the control unit is required, the safety guard
in front of the heat exchanger must fi rst be dismantled.
When access to the power unit is required, the cover plate
in the unit's extract air duct must fi rst be dismantled.
Cables from external sources can be run into the air han-
dling unit through the rubber diaphragm by the extract air
intake, located on the top of the unit.
The external cables can be extended in the existing cable
protection together with the power supply cable in the
extract air duct of the unit. Insert the cable in the opening
in the end of the cable protection or press it in between
the cable protection and the insulation.
Cables can be run in to the electric cubicle according to
appropriate hole instructions in the rubber diaphragm.
N.B.! Cables for external communication outside the air
handling unit must be arranged at a minimum distance of
100 mm from any current-carrying (live) cable.
Cable protection
GB.COMPACTAH.101110
Extract Air Intake
Extract air duct of the
air handling unit
Cover plate
Electrical equip-
ment cubicle
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