D-EIMW C00508-16EN - 10/48
1. Anti-vibration mountings in order to reduce transmission of vibrations to the underlying structure.
2. Isolating valves to isolate the machine from the water system during service.
3.
Manual or automatic air venting device at the
system’s highest point; drain device at the system’s lowest point. Neither
the evaporator nor the heat recovery device must be positioned at the
system’s highest point.
4. A suitable device that can maintain the water system under pressure (expansion tank, etc.)
5. Water temperature and pressure indicators on the machine to assist the operator during service and maintenance.
6.
A filter or device which can remove foreign particles from the water before it enters the pump (in order to prevent
cavitation, please consult the pump manufacturer for the recommended type of filter ). The use of a filter prolongs the life
of the pump and helps keep the water system in a better condition.
7.
Another filter must be installed on the machine inlet water pipe, near the evaporator and heat recovery (if installed). The
filter prevents solid particles from entering the heat exchanger, as they could damage it or reduce its heat exchanging
capacity.
8. The heat recovery device must be emptied of water during the winter season, unless an ethylenic glycol mixture in
appropriate percentage is added to the water circuit.
9.
If the machine is intended to replace of another, the entire water system must be emptied and cleaned before the new
unit is installed. Regular tests and proper chemical treatment of water are recommended before starting up the new
machine.
10.
In the event that glycol is added to the water system as anti-freeze protection, pay attention to the fact that suction
pressure will be lower, the machine
’s performance will be lower and water pressure drops will be greater. All machine-
protection systems, such as anti-freeze, and low-pressure protection will need to be readjusted.
Before insulating water piping, check that there are no leaks.
Fig. 3
– Water piping connection for heat recovery exchangers
Summary of Contents for EWWQ380B-SS
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