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Water Quality Table
SV Heat PumpSeries
SV Heat Pump Series
8 733 914 818 (2014?08)
Subject to change without prior notice
WATER QUALITY TABLE
WATER QUALITY
Maintaining proper water quality is important for
insuring a long and trouble free service life for an
SV series heat pump.
For closed loop and boiler/tower systems water
chemistry can be checked and easily maintained to
insure that corrosive elements, dissolved oxygen
and pH levels are kept in check. It is important to
insure that any additive, antifreeze or corrosion
inhibitor that is added to the water loop is
compliant with all applicable laws and regulations
and is compatible with copper, brass and bronze
alloys. Insure that all recommended safety
precautions are followed when handling or adding
chemicals to the water loop.
Table 1: Water Quality
POTENTIAL
PROBLEM
Water Characteristic
Acceptable Value
Copper
Cupro-Nickel
pH (Acidity/Alkalinity)
7-9
7-9
SCALING
Hardness (CaCO3,
MgCO3)
< 350 ppm
< 350 ppm
Ryznar Stability Index
6.0 - 7.5
6.0 - 7.5
Langelier Saturation Index
-0.5 - +0.5
-0.5 - +0.5
CORROSION
Hydrogen Sulfide (H2S)
< 0.5 ppm *
10-50 ppm
Sulfates
< 125 ppm
< 125 ppm
Chlorine
< 0.5 ppm
< 0.5 ppm
Chlorides
< 20 ppm
< 150 ppm
Carbon Dioxide
< 50 ppm
< 50 ppm
Ammonia
< 2 ppm
< 2 ppm
Ammonia Chloride
< 0.5 ppm
< 0.5 ppm
Ammonia Nitrate
< 0.5 ppm
< 0.5 ppm
Ammonia Hydroxide
< 0.5 ppm
< 0.5 ppm
Ammonia Sulfate
< 0.5 ppm
< 0.5 ppm
Dissolved Solids
< 1,000 ppm
< 1,500 ppm
IRON FOULING
Iron (Fe2+ Iron Bacteria
Potential)
< 0.2 ppm
< 0.2 ppm
Iron Oxide
< 1 ppm
< 1 ppm
EROSION
Suspended Solids
< 10 ppm, < 600 µm size **
< 10 ppm, < 600 µm size **
Maximum Water Velocity
6 ft/sec
6 ft/sec
* No "rotten egg" smell present at < 0.5 ppm H2S.
** Equivalent to 30 mesh strainer
NOTE:
Failure to insure proper water quality
and flow rates can shorten the life of the
heat pump and potentially void the unit
warranty.
