Airwell K 30F Notice Technique page 24

PRINCIPE DE FONCTIONNEMENT
DEGIVRAGE ELECTRONIQUE AVEC 10V4
MODELE REVERSIBLE
HEAT PUMP MODEL
24
This chapter includes specifications relative to the
heatpump model : heating performance, and electrical
connections.
All characteristics common with the standard model :
- cooling performance,
- filtration,
- heating,
- dimensions,
- principles of connection, ...
are explained on the plates of the technical instruc-
tions, which the 2 types of appliance have in common.
PRINCIPLES OF OPERATION
The cassette in its heatpump version is equipped with
an reversing system of the cooling cycle allowing
operation as an AIR/AIR heatpump by thermodynamic
production of heat.
The applicance is able to operate down to an outdoor
temperature of –7°C.
This heating process consists of transferring calories
from the outdoor cold air to the indoor air to be heated
with a very favorable coefficient of performance (COP)
between 2.2 and 3 depending on the outdoor weather
conditions.
These heatpumps consume on the average, for the
same released heating power, 3.2 times less electrical
energy than traditional electric heating and are therefore
remarkably economical.
ELECTRONIC DE-ICING WITH 10V4
The defrosting system operates according to 2
principles or algorhythms :
1) This system is driven by a sensor placed on the
external battery. It is triggered following a
comparison of the condenser temperature after the
compressor has been running for 20 minutes and
will be activated if this temperature drops by 3°C.
2) The second defrosting principle is activated if the
condenser temperature is lower than –8°C and if
the time interval has run out.
This time interval between 2 defrosting cycles is
always between 30 and 80 minutes, depending on
the length of the last defrosting operation.