LG THERMAV ZHBW056A1, Руководство пользователя, Страница: 42 / 52

5
THERMA V
Monobloc Type
Design and installation
4. Water Control
4.1 Water quality
Water quality should be complied with EN 98/83 EC Directives.
CAUTION
• If the product is installed at existing hydraulic water loop, it is important to clean hydraulic pipes to remove sludge
and scale.
• Installing sludge strainer in the water loop is very important to prevent performance degrade.
• Chemical treatment to prevent rust should be performed by installer.
• It is strongly recommended to install an additional filter on the heating water circuit. Especially to remove metallic
particles from the heating piping, it is advised to use a magnetic or cyclone filter, which can remove small
particles. Small particles may damage the unit and will NOT be removed by the standard filter of the heat pump
system.
• Water quality check should be implemented before completing the installation of system.
Detailed guide can be found in the table as below.
Water contents Value
pH 7.5~9.0
Conductivity 10~500 uS/cm
TDS (Total dissolved solids) 8~400 ppm
Alkalinity (HCO
3
-
)
60~300 (mg/L)
Total hardness
4 ~ 8.5 ºdH
71.4 ~ 151.7 (mg/L)
Iron (Fe)
≤
0.2 (mg/L)
Sulphate (SO
4
2-
)
≤
100 (mg/L)
Nitrite (NO
3
-
) ≤ 100 (mg/L)
Free chlorine (Cl
2
)
≤ 1 (mg/L)
Chlorides (Cl
-
)
ppm STS316 STS304
pH7
15
℃
3,000 180
40
℃
500 50
60
℃
200 30
80 ℃
125 20
pH9
15 ℃
18,000 700
40 ℃
2,600 250
60
℃
1,000 170
80
℃
550 130