Summary And Principle; Installation; Installation Conditions - Zehnder ComfoCool Q600 Manuel De L'installateur

3 Summary and principle

Read this chapter if you are interested in how the
ComfoCool Q600 works.
The ComfoCool Q600 is equipped with a compression
air temperation system, as is used in fridges. The
electrically driven compressor (P) pumps coolant round
the condenser (M), the capillary (K) and the evaporator
(L) in that order.
In the condenser (M) the coolant is converted from a gas
to a liquid (condensation). This process releases energy
that is discharged in the air extracted from the dwelling.
The capillary (K) ensures reduced pressure in the
coolant, making it boil. This is the opposite effect of a
pressure cooker, which raises boiling point by increasing
pressure.
In the evaporator (L) the coolant converts from liquid
to vapour. This phased process requires energy, which
is extracted from the supply air (D). This tempers the
supply air. The fins of the evaporator (L) are colder than
the air that passes them. This creates condensate,
dehumidifying the air. The condensate is drained to the
waste-water system.
The result is that energy is transferred from the supply
air (D) (which becomes cooler and drier as a result) to
the exhaust air (F) (which heats up as a result). The
combination of ComfoCool Q600 and heat-recovery
unit tempers more efficiently, as the heat-recovery
unit then behaves more like a "cold-recovery unit" in
warm weather. Warm fresh air is pre-cooled by the
heat-recovery unit and is then tempered further by the
ComfoCool Q600.

4 Installation

4.1 Installation conditions

In order to determine whether the ComfoCool Q600 can
be installed in a certain area, the following aspects must
be taken into account:
General
■ The ComfoCool Q600 must be installed according
to the general and locally applicable safety
and installation regulations of power and water
companies, as well as the instructions in this manual.
■ The ComfoCool Q600 must be installed in a frost-free
space with climate zone N (16-32°C).
■ The heat-recovery unit should be mounted on a
support frame (see under service parts), which should
stand on a stable floor. The ComfoCool Q600 is
placed on an adaptor set which is then mounted on
the heat-recovery unit.
Fitting to a heat-recovery unit mounted on a wall is
NOT permitted for safety reasons.
■ The ComfoCool Q600 is fitted with fall protection,
which should be firmly attached to the wall.
■ The following must be available: Ø180mm air duct
connections, 230V electrical connection with sufficient
capacity, and facilities for condensation drainage.
■ The roof vents should be made airtight and damp-
proof.
■ ATTENTION: All supply and exhaust ducts should
be damp-proofed. This prevents condensation
forming on the inner or outer duct surface and
improves air temperation efficiency.
■ The exhaust duct should drain in the direction of the
unit.
■ The condensation must be drained off frost-free, at a
gradient and incorporate a 'U' bend.
■ DO NOT connect a powered extractor hood to this
system.
■ We recommend fitting the ComfoCool Q600 with
silencers right up to the unit, on both the supply and
return pipes. For more information, please contact
Zehnder.
■ The installation location must be chosen so that
there is sufficient room around the unit for air duct
connections, intake and exhaust piping and in order
to carry out installation work. Keep at least 1 metre
free in front of the unit. At least 250mm should be
kept free at the side with the condensation drain.
■ The height when mounted should be at least 185cm,
beyond the space required for the duct connection.
A 10mm gap should be left under the inside doors in
order to ensure effective and draught-free airflow in the
house. If these openings are obstructed, due to draught
excluders or deep-pile carpet, the airflow in the house
will stagnate. As a result, system performance will be
compromised or fail altogether.
25 - EN