Daikin EWAD-D-H 200, Инструкция по установке, эксплуатации и обслуживанию

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5. A suitable device that can maintain the water system under
pressure (expansion tank, etc.).
6. Water temperature and pressure indicators to assist the
operator during service and maintenance.
Figure 4 - Minimum clearance requirements
7. 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.
8. 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.
9. 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.
10. 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.