Daikin EWAD-CZ Manual De Instalación Mantenimiento Y Operación página 13

4. Manual or automatic air venting device at the system's
highest point.; drain device at the system's lowest point.
5. Neither the evaporator nor the heat recovery device must
be positioned at the system's highest point.
8. A filter or device that can remove particles from the fluid.
The use of a filter extends the life of the evaporator and
pump and helps to keep the water system in a better
condition.
9. Evaporator has an electrical resistance with a thermostat
that ensures protection against water freezing at ambient
temperatures as low as –25°C. All the other water
piping/devices outside the unit must therefore be protected
against freezing.
10. 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.
Figure 4 - Minimum clearance requirements
6. A suitable device that can maintain the water system under
pressure (expansion tank, etc.).
7. Water temperature and pressure indicators to assist the
operator during service and maintenance.
11. If case of unit substitution, 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 unit.
12. 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 unit's performance will be lower
and water pressure drops will be greater. All unit-protection
systems, such as anti-freeze, and low-pressure protection
will need to be readjusted.
13. Before insulating water piping, check that there are no
leaks.
D-EIMAC01008-16EU - 12/194