39
CHARACTERISTICS OF WATER
SYSTEM: HEAT PUMP WITH TUBE BUNDLE EXCHANGER
Elements Loading water Make-up water
pH (25 °C) 6,8 ~ 8,0 6,8 ~ 8,0
Electrical conductivity (25 °C) < 400 S/cm < 300 S/cm
Chlorine ions (Cl-) < 50 mg/L < 50 mg/L
Sulphate ions (SO
4
) < 50 mg/L < 50 mg/L
Alkalinity (CaCO
3
) < 50 mg/L < 50 mg/L
Total hardness (CaCO
3
limestone) < 70 mg/L < 70 mg/L
Iron (Fe) < 0,1 mg/L < 0,3 mg/L
Sulfide ion (S
2-
) no no
Ammoio (count NH
4
+
) < 0,1 mg/L < 0,3 mg/L
Silica (SiO
2
) < 30 mg/L < 30 mg/L
ATTENTION
It is forbidden to operate the unit without the water filter
installed and cleaned.
ATTENTION
In particular, the unit is intended to be connected to a
hydronic system which must be designed to be classified
according to EN 378-1 as an indirect closed ventilated
system (ref EN 378-1; 2016, par.5.5.2.3: Indirect vented
closed system ), or as a double indirect system accord
-
ing to EN 378-1 (ref. EN 378-1; 2016, par. 5.5.2.4: Double
indirect system).
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