Specifications

5
5 - Installation
Unit installation entails:
- unit mounting
- refrigerant piping connections
- condensate water drainage connections
- unit wiring connections.
Whatever type of installation is chosen for the unit,
the following installation rules must be observed:
- The location selected for unit installation must be
capable of withstanding the weight of the unit in its full
operating configuration.
- Select a location where neither dust nor other foreign
bodies will clog the unit coil.
- If the outdoor unit is installed on the ground, make
sure that the location is not liable to flooding.
- Make sure that you know and apply any and all local
rules and regulations concerning the installation of air
conditioning equipment.
- Use the vibration isolators provided to prevent vibra-
tion transmission and resulting unnecessary noise.
- Do not install the equipment in explosive environ-
m e n t s .
- Make sure that the surrounding atmosphere does not
contain noxious or dangerous substances such as oil
vapours or sulphur.
- If the air conditioner is installed in a polluted area,
increase the frequency of maintenance operations.
- Avoid installing the unit where it will be in direct sun-
light, especially if it is a cooling only model since
direct sunlight will increase condensing pressure and
reduce unit ef f i c i e n c y. Install units facing North whe-
never possible.
- In particularly windy places, the unit should be instal-
led so that the prevailing wind does not interfere with
air discharge from the unit (configuration with the wind
blowing onto the side of the unit).
- MOH heat pump unit : install the unit at least 10 cm
above ground level to facilitate drainage of defrost
water and prevent accumulation of ice. In ef f e t ,
defrost water can cause accumulation of ice under the
unit during sub-freezing outdoor temperatures.
- Wherever possible, install the unit where it will be pro-
tected from rain, snow and run-offs from overhanging
s t r u c t u r e s .
- In areas with heavy snowfall it is best to install the unit
on wall supports.
- If condensates are not to be drained, do not install the
elobow supplied with the unit.
- Make sure that the unit is installed level so that
condensates will drain off correctly.
- In some regions, it is necessary to heat the bottom of
the condensate drainage pan and the condensate
drainage piping to avoid ice formation, and resulting
ice build-up in the fan compartment (heater strip must
be at least 25 W/m).
- All devices using fitted with electronic equipment are sen-
sitive to lightning. It is therefore wise to protect the instal-
lation with a surge arrestor.
OK