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Water quality
Water quality outside the limits (as set down below) will void this warranty. Water quality tests must be
carried out at the customer's own cost but Rinnai will reimburse any reasonable test costs where water
quality is within the limits tabled.
Water Quality and Impurity Limits
TDS (Total Dissolved Solids)
Up to 600 mg/L or ppm
Most metropolitan water supplies fall within these limits. If you are unsure about water quality, please
contact Rinnai and we will provide you with the details of an authorised agency able to test your water
for compliance to Rinnai standards. If sludge or foreign matter is present in the water supply, a suitable
filter should be incorporated in the water supply.
Some examples of water quality issues where water may need to be treated:
• Hard water (areas including Wanganui)
• Aggressive water (areas including Christchurch)
• Both hard and aggressive water (some bore water)
18 | Low pressure indoor copper owner and installer guide: 20733-C 03-13
Total Hardness CaCO
Dissolved (free) CO
3
Up to 200 mg/L or ppm
Up to 25 mg/L or ppm 6.5-8.5 Between -1.0-0.8
pH
Langelier Index
3
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