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Translation from original instructions
5.4 Hydraulic connections
5.4.1 Connections to the plate condenser
Should the unit be equipped with integrated plate condensers, these must be connected to the heat dissipation system
(cooling tower, dry cooler, ring). The dimensional drawings show the position of the water connections to the exchangers in
their various configurations.
There is always a condenser for each refrigeration circuit, therefore in the dual-circuit units two condensation
water inlets/outlet are required which can be connected to a single circuit by means of two manifolds placed
outside of the unit.
Please observe the following guidelines:
- use copper or steel pipes;
- use hoses and three piece joints for the connections to the exchangers;
- install shut-off ball valves next to the heat exchangers;
- install drain taps at the lowest points of the circuit;
- display relief valves at highest points.
It is obligatory to install a mesh filter with a mesh size not exceeding 1 mm on the capacitors’ inlet, in order to
avoid clogging due to dirt.
Respect the direction of the capacitors’ inlet / output otherwise there will be loss of performance.
The use of silty water or with a high limestone content can cause the rapid decrease in the performance of the
exchanger.
Use an appropriate percentage of antifreeze should the hydraulic circuit be at a room temperatures near or
below zero degrees centigrade.
Should the unit have two-way pressure regulating valves for controlling condensation, it is necessary to install them outside
the unit.
For Free Cooling units, it is necessary to complete the hydraulic connection between the Free Cooling coils and the capa-
citor/s. The connection must be carried out outside the unit, according to the attached diagrams. The water flow three-way
control valve in the condenser is supplied by the Manufacturer.
