Ferroli OMNIA H 04E, Installation, Maintenance And User Manual

Page: 13 / 72

13
fi g. 7 fi g. 8
INSTALLATION
Installation diagrams
The indoor unit may be installed on top of the outdoor one and vice versa.
Outdoor unit positioned at the bottom and indoor unit at the top (fig. 1).
In this case a trap (6) must be made on the intake piping (3) to halt the downflow of
refrigerant and to avoid liquid returning to the compressor. The relative connection
pipes
must be insulated.
Key:
1. Outdoor unit
2. Indoor unit
3. Piping on gas side (larger diameter)
4. Piping on liquid side
5. Trap
Outdoor unit positioned at the top and indoor unit at the bottom (fig. 2).
In this case, traps (6) must be installed on the suction piping (3), every three meters
of difference in level. These traps will allow the oil to return to the compressor. The
relative connection pipes must be insulated.
Key:
1. Outdoor unit
2. Indoor unit
3. Piping on gas side (larger diameter)
4. Piping on liquid side
5. Trap
Note : The maximum difference in level between the indoor unit and outdoor
unit must not exceed the values given in the "LIMITS TO THE LENGTH AND
HEIGHT DIFFERENCE OF REFRIGERANT PIPES" section.
☞
fi g. 9
fi g. 10
Make sure there is enough room to do the installation
■ Prepare a water drainage channel around the foundation, to drain waste water from
around the unit.
■ If water does not easily drain from the unit, mount the unit on a foundation of concrete
blocks, etc. (the height of the foundation should be about 100 mm.
■ If you install the unit on a frame, please install a waterproof plate (about 100 mm) on the
underside of the unit to prevent water from coming in from the low side.
■ When installing the unit in a place frequently exposed to snow, pay special attention to
elevate the foundation as high as possible.
■
In heavy snowfall areas it is very important to select an installation site where the snow
will not affect the unit. If lateral snowfall is possible, make sure that the heat exchanger
coil is not affected by the snow (if necessary construct a lateral canopy).
■ As the outdoor temperature is measured via the outdoor unit air thermistor, make sure
to install the outdoor unit in the shade, or a canopy should be constracted to avoid direct sunlight, so that it is not influenced by the
sun’s heat, otherwise protection may be possible to the unit.
■ Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installation.
■ In accordance with the foundation drawing in the figure, fix the unit securely by means of the foundation bolts. (Prepare four sets
each of Ø 10 Expansion bolts, nuts and washers which are readily available on the market.)
■ It is best to screw in the foundation bolts until their length is 20 mm from the foundation surface.
When installing the unit in a place exposed to strong wind, pay special attention to the following.
Set the outlet side at a right angle to the direction of the wind.
Strong winds of >5 m/s or more blowing against the unit's air outlet causes a short circuit (suction of discharge air), and this may
have the following consequences:
- Deterioration of the operational capacity.
- Frequent frost acceleration in heating operation.
- Disruption of operation due to rise of high pressure.
- When a strong wind blows continuously on the front of the unit, the fan can start rotating very fast until it breaks.