Справочник Пользователя для Rheem Water Heater

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WATER SUPPLIES 
57 
SATURATION INDEX 
The saturation index is used as a measure of the water’s corrosive or scaling 
properties. In a corrosive water supply, the water can attack copper parts and 
cause them to fail. Where the saturation index is less than –1.0, the water is 
corrosive and warranty does not apply to a solar collector. 
 
In a scaling water supply calcium carbonate is deposited out of the water onto 
any hot metallic surface. Where the saturation index exceeds +0.40, the water 
is scaling and an expansion control valve* must be fitted on the cold water line 
after the non-return valve and the solar collectors should be covered when the 
water heater is not intended to be used for more than two weeks. Where the 
saturation index exceeds +0.80, warranty does not apply to a solar collector 
unless a water softening device is installed. 
 
 
 
* Refer to the 
40
 
WATER HEATERS NOT INSTALLED IN ACCORDANCE WITH THE ABOVE 
ADVICE WILL NOT BE COVERED BY THE WARRANTY.