WATER SUPPLIES
17
SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY
The water heater, solar collectors and their components are not suitable for certain water chemistries. Those
chemistries are listed below. If the water heater is connected at any time to a water supply with the following
water chemistry, the Rheem warranty will not cover any resultant faults on the components listed below:
Water Chemistry
Component
Total Dissolved Solids (TDS) > 2500 mg/L
water heater cylinder
Total Dissolved Solids (TDS) not suitable for anode type
water heater cylinder
Saturation Index (SI) < -1.0
solar collector
copper sheathed heating unit
Saturation Index (SI) > +0.4
(if an expansion control valve is not fitted)
water heater cylinder
temperature pressure relief valve
Saturation Index (SI) > +0.8
solar collector
standard watts density heating unit
very corrosive
very scaling
scaling
corrosive
+0.4
+0.8
0
-1.0
no
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ar
rant
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s
to a:
te
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f
it
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.
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y ap
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to a:
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o
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to
r
SATURATION INDEX (SI)
SOLAR WATER HEATERS WITH ELECTRIC HEATING UNIT
WITHIN WARRANTY
SPECIFICATION
SATURATION INDEX
(calculated @ 80°C water temperature)
no
w
ar
rant
y ap
p
li
e
s
to a:
-s
ta
n
d
a
rd
w
a
tt
s
d
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n
s
it
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e
a
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it
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(o
p
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ir
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u
it
)
s
o
la
r
c
o
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c
to
r
