1) Protection for over-high discharge pressure.
2) Protection for over-low suction pressure.
3) Power supply phase sequence protection.
4) Anti-frozen protection in cooling mode.
5) Anti-frozen protection in Winter.
6) Protection for compressor over current.
7) Protection for compressor overload.
8) Outlet and inlet water temp. difference protection.
9) Compressor discharge temp. protection.
10) Water flow cut-off protection.
11) Sensor malfunction protection.
12)Low-temp. protection of shell-and-tube heat exchanger.
Note: Specifications are based on the following conditions:
Cooling : (*1) chilled water inlet/outlet: 12˚C / 7˚C, and outdoor ambient temp. of 35°C (117℉) DB.
(*2) chilled water inlet/outlet: 12˚C / 7˚C, and outdoor ambient temp. of 46˚C (140℉)DB
Heating : warm water inlet/outlet: 40˚C / 45˚C, and outdoor ambient temp. 7˚C DB/6°CWB.
Water side fouling factor: 0.086m
2
˚C /kW.