Noise Levels; Mounting; Access To Connections; Refrigeration Connections - Tecumseh SILENSYS SILAJ2432P Original Installation Instructions

4.4. Noise levels

Silensys® condensing units have been designed to operate
extremely quietly.
Precautions must be taken during installation to avoid
generating additional noise and vibrations:
- Units must be securely mounted on a stable, rigid base,
- Connecting pipework must be sufficiently flexible to ensure
vibration is not transmitted to the rest of the installation.
We sometimes recommend isolating material be inserted
between the unit feet and the base or between the wall
mounting brackets and the wall. This can be either an isolating
pad or anti- vibration mounts (not supplied) conforming to the
manufacturer's recommendations for their selection and
installation. The selection of any anti-vibration products and
their potential for absorbing vibration is not the responsibility of
Tecumseh.

4.5. Mounting

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Unit must be installed horizontally. All the feet length must be
in contact with the ground or wall mounting kit.
is securely fixed to the type of floor or wall surface upon which
it is mounted using the appropriated fixings (not supplied).
- Floor mounting
Do not use wooden beams as a base onto which the product is
fixed. Create a concrete base strong enough to support the load
and vibration. Use fixing bolts which are of an appropriate length
and are capable of securing the productcorrectly.
Use the mounting kit supplied with the condensing unit.
- Wall mounting
Use the mounting kit supplied with the condensing unit. Secure
the product appropriately.
Make sure that the wall bracket supports at least 250 kg pull-out at
the attachment point.

4.6. Access to connections

4.7. Refrigeration connections

To ensure the quality of our products, the condensing unit has
been dehydrated and charged with nitrogen.
On models fitted with suction tube diameter 1'' 1/8 the suction
line from the valve to the end of the tube is not under nitrogen
(the suction line is plugged and the valve closed).
Valve tightening torques on the compressors and
receivers
COMPRESSORS SUCTION VALVE
AJ 70 to 85 Nm
FH/AG 114 to 126 Nm
RECEIVERS
0,75L to 6 L
GENERAL REMINDERS:
To preserve the quality of the TECUMSEH unit and
ensure that it functions properly, it is advisable to:
| Installation Instructions
to m
Ensure the unit
4
4
5
DISCHARGE
VALVE
/
114 to 126 Nm
LIQUID START VALVES
70 to 85 Nm
- Check that the circuit to be connected is clean and dry.
- Purge the system with nitrogen while brazing and ensure the
flame is held well away from electrical equipment.
- Insulate the suction pipe up to the compressor inlet to limit
suction overheating and to prevent condensation. For low
temperature applications, select insulation of a minimum
thickness of 19 mm. Link all lines with synthetic rubber tape and
attach them to walls using clamps.
- Use only the refrigerant for which the compressor has been
designed.
- For low-pressure compressor units, a thermostatic expansion
device is preferable to a capillary.
- Only use components that are compatible with the designated
refrigerant.
- Do not add any additives or dyes.
- Ensure tubing is installed in a manner which prevents oil
becoming trapped and aids the absorption of vibrations and
expansion.
- Do not add oil, except in cases where piping is longer than 10 m;
in this instance, use oil recommended by TECUMSEH. If your
installation has vertical pipe risers, you will have to create U traps
or reduce the diameter of the pipework to get a sufficient rate of
climb for the oil circulation.
- Orientate the overpressure protection correctly in a direction
that is not dangerous for the user and in accordance with EN378.
- Cut and deburr the tubing carefully to prevent entry of dust and
metallic particles inside the system. Never use a saw to cut tubing
and use a correctly-sized tube bender based on the tube diameter
to prevent the pipe being excessively compressed. TECUMSEH
recommends using brazed connections instead of screw
connections to limit the risks of leaks overtime.
- Ensure the electrical insulation of clamps. We recommend that
you put in place a cable tray according to the standard NF C15-
100 in France or the local standard in the country concerned (IEC
60204/IEC 60335), separating it from the refrigerant tubing.
- Protect the bodywork while soldering pipes.
5,
General design principles for pipework
Pipes must be located and installed in order to suppress or to
reduce as much as possible, damages linked to bumps and
shocks.
Suction pipework
If the compressor is on the same level or lower than the
evaporator, we recommend that swan neck suction line is used
where the top of the swan neck is above the evaporator.
Liquid pipework
Pressure drop in the pipework must be prevented. The
components fitted to the liquid line such as the filter drier,
solenoid valve, liquid line sight glass can have a pressure drop
which is significant.
The pressure drop per component should be checked to ensure it
is not excessive.
1
Suction pipework returns
refrigerant gas to the compressor
from the evaporator. In practice,
the suction pipework should be
designed to limit the pressure
drop.
If the compressor is located higher
than the evaporator, suction risers
must be used. Pipeline velocity
must be sufficient to ensure oil
flow in the suction risers.