Enertech Global
55
EAV - EME/EMD Rev. A Models
Installation and Operations Manual
Potential
Problem
Chemical(s)
or
Condition
Range
for
Stainless
Steel
BPHE
Calcium
&
Magnesium
Less
than
0.1
ppm
pH
Range
7.5
‐
9
Total
Dissolved
Solids
No
rigid
setpoint
Ammonia,
Ammonium
Hydroxide
No
t allowed
Ammonium
Chloride,
Ammonium
Less
than
2
‐
20
ppm
Calcium
Chloride/
Sodium
Not
allowed
Chlorine
Not
allowed
Hydrogen
Sulfide
Less
than
0.05
ppm
Sulfates
Less
than
100
ppm
Hydrogen
Carbonate
Between
60
ppm
and
200
ppm
Hydrogen
Carbonate/
Sulfates
More
than
1.5
ppm
Calcium
&
Magnesium/Hydrogen
Carbonate
More
than
0.5
ppm
Conductivity
Less
than
500
micros/cm
Iron
Bacteria
Not
allowed
Iron
Oxide
Less
than
0.2
ppm
Suspended
Solids
40
mesh
strainer
required
Water
Velocity
Less
than
5.5
m/s
in
the
port
Scaling
Corrosion
Biological
Erosion
Notes:
1. Hardness
in
ppm
is
equivalent
to
hardness
in
mg/l.
2. Grains/
gallon
=
ppm
divided
by
17.1.
3. Unit
internal
heat
exchangers
are
not
recommended
for
pool
applications
or
water
outside
the
range
of
the
table.
Secondary
heat
exchangers
are
required
for
pool
or
other
applications
not
meeting
the
requirements
shown
above.
4. Saltwater
applications
(approx.
25,000
ppm)
require
secondary
heat
exchangers
due
to
copper
piping
between
the
heat
exchanger.
5. Filter
for
maximum
of
600
micron
size.
Water Quality Table
Table 3: Water Quality Table
Notes:
1.
Hardness in ppm is equivalent to hardness in mg/l.
2.
Grains/ gallon = ppm divided by 17.1.
3.
Unit internal heat exchangers are not recommended for pool applications or water outside the range of the table. Secondary
heat exchangers are required for pool or other applications not meeting the requirements shown above.
4.
Saltwater applications (approx. 25,000 ppm) require secondary heat exchangers due to copper piping between the heat
exchanger.
5.
Filter for maximum of 600 micron size.
Section 7: Water Quality & Antifreeze
