WATER SUPPLIES
19
CHLORIDE AND PH
In a high chloride water supply, the water can corrode stainless steel parts and
cause them to fail.
Where the chloride level exceeds 250 mg / L the Rheem warranty does not apply
to a stainless steel cylinder.
pH is a measure of whether the water is alkaline or acid. In an acidic or very
alkaline water supply, the water can attack stainless steel parts and cause them
to fail.
Where the pH is less than 6.0 or greater than 9.5, the Rheem warranty does not
apply to a stainless steel cylinder. Water with a pH less than 6.0 may be treated
to raise the pH.
The water supply from a rainwater tank in a metropolitan area is likely to be
corrosive due to the dissolution of atmospheric contaminants. This may result in
pH of less than 6.0. It is recommended an analysis on the water from a rainwater
tank be conducted prior to connecting this type of water supply to a water heater
with a stainless steel cylinder.
Refer to the pH and Chloride chart on page 19.
WITHIN WARRANTY
SPECIFICATION
5.0
6.0
7.0
8.0
9.0
350
300
250
200
150
100
50
CHL
ORI
D
E
-
m
g/L
pH & CHLORIDE
WATER HEATERS (stainless steel cylinder)
acidic alkaline
pH
no
w
ar
ra
nt
y ap
pl
ie
s
to
a:
-s
tai
nl
es
s
st
ee
l w
at
er
heat
er
c
yl
inder
0
no warranty applies
to a:
-stainless steel water heater cylinder
no w
ar
ran
ty
ap
pl
ies
to
a:
-s
tai
nl
es
s
st
ee
l w
at
er
heat
er
cy
linder
10.0
9.5