D
–EIMWC00408-16EN - 11/60
Make sure to provide a strong and solid foundation to reduce noise and vibration as much as possible.The water in
the system must be particularly clean and all traces of oil or rust must be removed. A mechanical water filter must be
installed on the machine
’s inlet piping.
Minimum space requirements
Every side of the machine must be accessible for all post-installation maintenance activities. Figure 2 shows the
minimum space necessary.
Fig. 2
– Lifting the unit
Ventilation
The temperature of the room where the unit is placed should be always maintained between 0°C and 40°C.
Sound protection
When sound levels require special control, great care must be exercised to isolate the machine from its base by
appropriately applying anti-vibration elements (supplied as an option). Flexible joints must be installed on the water
connections, as well.
Water piping
Piping must be designed with the lowest number of elbows and the lowest number of vertical changes of direction. In this
way, installation costs are reduced considerably and system performance is improved.
The water system must have:
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 debris 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. 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.
9.
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.
10. No system is installed on the unit to prevent water freezing in case the ambient temperature goes down below
0°C (thermal insulation is not enough to assure freezing prevent). Machine and water pipes must be protected
against freezing
Before insulating water piping, check that there are no leaks.
