Refrigerant Side; Coolant Side - Bitzer K033N Instructions De Service

Fig. 1: Monting with fixing plate
1 approved compressor
2 intermediate piece, only available with
the smallest compressor series
3 vibration damper
4 fixing element, here: fixing plate
5 upper fixing bracket
6 shell and tube condenser
7 lower fixing bracket
8 bottom fixing rail
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4.3.3

Refrigerant side

▶ The discharge gas line must be elastic in such a way
1
that a minimum of vibrations and movement is trans-
ferred to the shell and tube condenser. It may be ne-
cessary to fit vibration eliminators.
▶ Use pulsation mufflers to damp discharge gas pulsa-
tions.
▶ Design and operate the whole system in such a way
2
that the maximum operating pressure in the pressure
equipment cannot be exceeded.
3
Pressure relief valves are essential
• if it is to be expected that the maximum operating
pressure will be exceeded due to external heat
sources (e. g. fire),
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• or if the entire refrigerant charge of the installation is
more than 90% of the refrigerant side volume of the
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shell and tube condenser at 20°C. Refrigerant side
volume means the volume between operationally
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lockable valves before and after a pressure equip-
ment. In case of shell and tube condensers being
mounted in series, it is the volume of all refrigerant
sides of the shell and tube condensers and the con-
necting pipes.
▶ Install in these cases overflow pressure relief
devices that lead the refrigerant to the low pressure
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side of the installation.
8
Safety switching device
According to the local regulations, safety switching
devices for pressure limiting must be provided.
4.3.4

Coolant side

▶ Mount for each shell an tube condenser one flow
regulating valve.
▶ Dimension the flow regulating valve thoroughly.
▶ Separate out any solids by suitable filters.
▶ Avoid the presence of gas through suitable design
measures.
Open circuits: The pressure equipment must not drain
off while standstill.
▶ Preferably mount the flow regulating valve at the
coolant outlet.
▶ If it is mounted at inlet, mount a swan-neck at the
outlet.
Coolant: tap-water
▶ Depending on local regulations a pipe disconnector
might be installed.
DB-200-6