Noise Levels - Embraco Bioma Silent Unit Instructions D'installation

3.3 Location
•
Ensure the unit should not block or obstruct thoroughfares, doors, shutters or the movement of personnel.
• The surface supporting the condensing unit must be level and capable of bearing the combined weight of the unit+
and the support.
• Ensure there is a sufficient distance between the condensing unit and object in surrounding area to ensure good air
circulation (refer to picture 2).
• Condensing units must be installed in well ventilated area but not windy locations. Ensure there is a good air
circulation to the condenser. There must be no obstacles in front or to the side of the unit which would cause air
recirculation to the condenser resulting in an abnormally high condensing temperature.
• The condensing unit must be mounted in a level according to the best refrigeration practice.
• Ensure that the condensing units is kept away from the heat sources, damp area, corrosive atmosphere or any site
there is risk of explosion.
• Do not exceed the recommended service pressure.

3.4 Noise levels

Precautions must be taken during installation to not generate additional noise and vibration
• Units must be securely mounted on a stable, rigid base.
• Connecting pipe work must be sufficiently flexible to ensure vibration Is not transmitted to the rest of the
installation.
• We sometimes recommend insulated material be inserted between the unit feet and the base or between the wall
mounting brackets and the wall. This can be either isolating pad or anti vibration mounts (not supplied) conforming
to the manufacturer's recommendations for their selection and installation.
• The selection of anti-vibration products and their potential for absorbing vibration is not the responsibility of
Embraco.
• Final noise level of the installation depends on the reflection / absorption properties of the environment. Keep in
mind general rule that installation of the unit in the corner of surfaces will increase sound pressure level (depending
on the number of reflections. ).
3.5 Mounting.
Ensure the units is securely fixed to the type of floor or wall surface upon which it is mounted
using the appropriate fixing (not supplied).
Warning
: Do not fix the units to a wall by the rear of the casing as it is not design for this purpose.
It is possible to stack the unit on top of each other. Maximum stacking is 2, we recommend to secure to the wall.
3.6 Refrigeration connections.
To ensure the quality of our products, the condensing unit has been
vacuumed and charged with nitrogen gas.
Warning: To maintain the quality of a EMBRACO condensing unit and to ensure it functions correctly, the following
precautions must be taken:
• Check that the pipe work to be connected is clean and dry.
• Protect the casing whilst brazing pipe work.
• Purge the system with nitrogen whilst brazing and ensure the flame is held away from electrical equipment.
• Insulate the suction pipe up to the external valve to limit the superheat.
• Only use designated refrigerant for which the compressor is designed (see identification label)
• Do not add any additives or colorings.
• Ensure the pipe work is well supported and as short as possible to prevent oil trapping and to aid the absorption of
vibrations and pulsations.
• In installations with vertical risers, it is necessary to create a U-trap and P-trap and check the velocity inside the
pipe to ensure a proper oil circulation.
• Cut and shape piping carefully to prevent dust and metallic particles getting into the system. Never us a saw. Use
the correct sized bending tool for the pipe diameter to prevent the pipe being compressed.
• Tape the pipes together with self-adhesive vinyl and attach them to the wall with clips.
3.7 Electrical connections.
The unit is fitted with an electrical box which the factory installed compressor, fan
assembly, pressure switch, crankcase heater, and main switch or contactor are connected via terminal blocks on a
DIN rail.
Ensure the electrical supply is disconnected before carrying out any wiring or repairs of the unit. All
cabling on site must conform with EN60204.
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