D
–EIMAC00708-16EN - 22/76
THE WIDTH OF THE UNIT CAN BE DIFFERENT BUT THE MINIMUM RECOMMENDED INSTALLATION DISTANCES
REMAIN THE SAME
Figure 6 - Minimum recommended installation distances
Sound protection
When sound levels require special control, great care must be exercised in isolating the machine from its base, by
appropriately applying antivibration devices (supplied optionally). Flexible joints must be installed on the water
connections, as well.
Water piping
The following instrucrion are applicable to units supplied with the evaporator installed in the package ( EW AD E-SS/SL);
that may also be considered as general guidelines for water piping in units supplied without evaporator (ERAD E-SS/SL)
when used in conjuction with refrigerant to water evaporator.
Water piping must be designed with the lowest number of curves 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:
Anti-vibration supports in order to reduce transmission of vibrations to the underlying structure.
Sectioning valves to isolate the machine from the hydraulic system during servicing.
Manual or automatic air bleeding device at the s
ystem’s highest point. Drainage device at the system’s lowest point. Both
the evaporator and the heat recovery device must not be positioned at the system’s highest point.
A device that can maintain the hydraulic system under pressure (expansion tank, etc.)
Water temperature and pressure indicators on the machine to aid servicing and maintenance operations.
A filter or device that can remove extraneous particles from the water before it enters the pump (Please consult the pump
manufacturer’s recommendations for an appropriate filter to prevent cavitation). Use of a filter prolongs the life of the
pump and helps keep the hydraulic system in best condition. Evaporator filter is supplied for EW AD E-SS/SL.
Another filter must be installed on the pipe conveying ingoing water to the machine, near the evaporator and heat
recovery (if installed). The filter avoids solid particles entering the heat exchanger, as they could damage it or reduce its
heat exchanging capacity.
The shell and tube heat exchanger has an electrical resistance with a thermostat that ensures protection against water
freezing up to an outdoor temperature of
– 25°C. All the other hydraulic piping outside the machine must therefore be
protected against freezing.
The heat recovery device must be emptied of water during the winter season, unless an ethylene glycol mixture in
appropriate percentage is added to the water circuit.
If the machine is installed in order to replace another, the entire hydraulic 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.
Содержание ERAD 120E-SL
Страница 43: ...D EIMAC00708 16EN 43 76 Figure 18 Field Wiring Diagram...
Страница 75: ...D EIMAC00708 16EN 75 76...
