Introduction To The Product; Introduction To The Conditioning; Refrigeration Circuit; Air Conditioner Composition - emmeti XECO Serie Manuel D'installation

1. INTRODUCTION TO THE PRODUCT

1.1 Introduction to conditioning
Air conditioner function is to create perfect temperature and humidity
conditions in the rooms they are installed, optimal conditions are able to
satisfy human exigencies, in one word "comfort".
Working principle is to use refrigerant gas status changes (liquid/vapour)
which is included in the internal refrigeration circuit, to subtract heat from
one room and move it to another one.

1.2 Refrigeration circuit

Refrigeration circuit can be exemplified as follow (Fig.1)
1) Evaporation
Room air is pushed from a fan through a heat exchanger called evaporator
(internal unit in Cooling mode)
Refrigerant gas, at low pressure and temperature, evaporate by absor-
bing heat from the air which is consequently cooled (and dehumidified)
2) Compression
Refrigerant in vapour form goes through a compressor. Compressor cau-
ses an increased refrigerant pressure which becomes very hot
3) Condensation
Room air is pushed from a fan through a second heat exchanger called
condenser (internal unit in Heating mode). Refrigerant gas, at high pres-
sure and temperature, condensate giving heat to the air which is conse-
quently heated.
4) Expansion
Refrigerant in liquid form passes through a throttling way called expan-
sion valve. Expansion valve causes a refrigerant pressure lowering which
becomes very cool.
Once again at point 1 and the cycle repeats.
Air conditioners allow to use the energy of the external air to heat the inter-
nal room and vice versa
This allows to use about:
2/3 renewable and free energy of the air
1/3 electric energy to make the air conditioner work
If a photovoltaic system is installed you will air-condition the house at cost
and environmental impact equal to zero.
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1.3 Air conditioner composition

Air conditioners are "Split System" type with air to air heat exchange
They are composed of two separate units:
- "internal unit" to be placed inside the room which has ti be air conditioned
- "external unit" to be placed outside the room which has to be air
conditioned
All functions of the air conditioner are activated by an infrared remote
control

1.4 Internal unit

 Louvers for air inlet
2 Horizontal deflector, automatic air flow direction (SWING)
3 Frontal panel
4 Air filters
5 Display
6 Electrical supply cable without plug (for Single Hi-Wal units only)
7 Ioniser
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