Introduction And Safety; Working And Principle - Zehnder ComfoCool Q600 Manuel De L'utilisateur

1 Introduction and safety

In combination with your ventilation unit, the unit
is designed to regulate to comfortable levels the
temperature and humidity of the fresh air supplied to
your dwelling. This creates a comfortable and pleasant
indoor climate. In the winter, the ventilation unit ensures
energyefficient ventilation in your dwelling, using the
energy from the stale exhaust air to heat the supply
air to a comfortable temperature. In the summer the
system ensures energy-efficient air temperation for your
dwelling.
Safety instructions
■ The unit may only be used when it
is properly installed according to the
instructions and guidelines in the
installer manual of the unit;
■ Do not open the casing. The installer
makes sure that all parts that can cause
personal injury are behind the casing;
■ The unit can be used by:
- children aged from 8 years and above;
- persons with reduced physical
capabilities;
- persons with reduced sensory
capabilities;
- persons with reduced mental
capabilities;
- persons with lack of experience and
knowledge,
if they have been given supervision or
instruction concerning use of the unit in
a safe way and understand the hazards
involved;
■ Children shall not play with the unit;
■ Cleaning and user maintenance shall
not be carried out by children without
supervision.
If you suspect a defect, please observe
the following safety precautions:
1. Never open the unit. Repairs should
only be carried out by a recognized
fitter.
2. The unit contains coolant (R134a).
This coolant is colorless, non-toxic
and non-flammable. The volume of
coolant in the unit is so small that it
cannot possibly lead to hazardous
concentrations in your dwelling. The unit
has been designed to prevent coolant
from leaking under normal operating
10 - EN
conditions.
If you detect a faint, ether-like smell:
■ Do not touch the unit for at least one
hour;
■ Open windows and doors in the room in
which the unit is located for at least an
hour;
■ Contact your installer.

2 Working and principle

The unit 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 unit and ventilation unit tempers more
efficiently, as the ventilation unit then behaves more
like a "cold-recovery unit" in warm weather. Warm
fresh air is pre-cooled by the ventilation unit and is then
tempered further by the unit.