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NATURAL REFRIGERANT CO2 HEAT PUMP HIGH TEMPERATURE HOT WATER UNIT The direct water inlet of the heat pump and the water refill through the hot water storage tank are all required to meet the water quality standards in the table below. Whether it is municipal tap water or other water sources, the water quality shall be investigated before installing the heat pump, and the necessary treatment should be carried out in conjunction with the results of the water quality investigation. The use of water that does not meet the water quality standard may shorten the Standards service life of heat exchangers, heat storage tanks, water piping, and other machines. Reference standards: GB1576-2008 Water Quality for Industrial Boilers, GB/T 29044-2012 Water Quality for Heating and Air Conditioning Systems, and JRA-GL-02-1994 Water quality standards for refrigerating air conditioners. Water Quality Item Hot water system Trend Standard items PH (25°C) Electrical conductivity Sulphate ion Full hardness Ionic silicon dioxide tube Ammonium ion Free carbon dioxide (25°C, mS/m) (mgSO42-/m) (mgCaCO3/L) (mgSiO2/L) (mgCu/L) (mgNH4+/L) (mgCO2/L) Water circulating temperature 20°C< Water temperature ≤ 90°C Below 30 Below 30 Below 70 Below 30 Below 1.0 Below 0.1 Below 0.4 Supply water Below 30 Below 30 Below 70 Below 30 Below 0.1 Below 0.1 Below 4.0 Corrosion ○ ○ ○ ○ ○ Scale deposit ○ ○ ○ 7.0~8.0 7.0~8.0 ○ ○ Chloride ion (mgCl-/m) Below 30 Below 30 ○ Acid consumption (pH 4.8) (mgCaCO3/L) Below 50 Below 50 ○ Calcium hardness (mgCaCO3/L) Below 50 Below 50 ○ Iron (mgFe/L) Below 1.0 Below 0.3 ○ ○ Sulfide ion (mgS2-/L) Not detected Not detected ○ Reference items Residual chlorine (mgCl/L) Below 0.1 Below 0.3 ○ Stability index ○ ○ Main differences between tap water and JRA-GL-02-1994 standard Component Tap water Water refilling requirements pH Full hardness Calcium hardness Pure water Reclaimed water Softening treatment water (mgCaCO3/L) (mgCaCO3/L) It refers to the water with extremely low electrical conductivity. It is highly corrosive because it does not contain hard and corrosive components. It refers to the water that has been used once and is added with medicine for regeneration. the water containing calcium and magnesium ion hardness components, and the water after replacement reaction of soluble sodium salt. 6.5-8.5 Below 450 No regulation Pure water Tap water 7.0~8.0 Below 70 Below 50 Below 1 100~200 Silicon dioxide (mgSiO2/L) No regulation Below 30 Alkalinity (mgCaCO3/L) No regulation Below 50 Electrical conductivity Distilled water 1~10 www.tica.pro 13 NATURAL REFRIGERANT CO2 HEAT PUMP HIGH TEMPERATURE HOT WATER UNIT Use ConditionsPDF Image | CO2 HEAT PUMP High Temp Hot Water
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