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General Installation Information cont.
Material
pH
Acidity/Alkalinity
Scaling
Magnesium Carbonate
Hydrogen Sulfide
Corrosion
Ammonia Chloride
Ammonia Nitrate
Ammonia Hydroxide
Ammonia Sulfate
Total Dissolved Solids (TDS)
Iron, FE
Bacterial Iron Potential
Iron Fouling
(Biological Growth)
Suspended Solids
Erosion
Threshold Velocity
NOTES: Grains = ppm divided by 17
mg/L is equivalent to ppm
The heat exchangers and water lines in the units are copper
or cupronickel tube. There may be other materials in the
buildings piping system that the designer may need to take into
consideration when deciding the parameters of the water quality. If
antifreeze or water treatment solution is to be used, the designer
should confirm it does not have a detrimental effect on the
materials in the system.
Contaminated Water
In applications where the water quality cannot be held to
prescribed limits, the use of a secondary or intermediate heat
exchanger is recommended to separate the unit from the
contaminated water. The table above outlines the water quality
guidelines for unit heat exchangers. If these conditions are
exceeded, a secondary heat exchanger is required. Failure to
supply a secondary heat exchanger where needed will result in a
warranty exclusion for primary heat exchanger corrosion or failure.
Low Water Coil Limit
Set the freeze sensing switch SW2-1 on the Aurora Base Control
(ABC) printed circuit board for applications using a closed loop
antifreeze solution to "LOOP" (15°F). On applications using an
open loop/ground water system (or closed loop no antifreeze), set
this dip switch to "WELL" (30°F), the factory default setting. (Refer
to the DIP Switch Settings table in the Aurora Control section.)
Condensate Drain
On vertical units, the internal condensate drain assembly consists
of a drain tube which is connected to the drain pan, a 3/4-inch PVC
female adapter and a flexible connecting hose. The female adapter
may exit either the front or the side of the cabinet. The adapter
should be glued to the field-installed PVC condensate piping.
On vertical units, a condensate hose is inside all cabinets as a
trapping loop; therefore, an external trap is not necessary.
AFFINITY & AFFINITY ADVANCED SINGLE & DUAL CAPACITY SERIES INSTALLATION MANUAL
Calcium and
Less than 0.5 ppm (rotten egg
smell appears at 0.5 ppm)
Sulfates
Less than 125 ppm
Chlorine
Chlorides
Carbon Dioxide
Ammonia
Less than 1000 ppm
LSI Index
+ (Ferrous)
2
Less than 1 ppm, above this level
Iron Oxide
deposition will occur
Less than 10 ppm and filtered for
max. of 600 micron size
(Fresh Water)
Copper
7 - 9
(Total Hardness)
less than 350 ppm
Less than 0.5 ppm
Less than 20 ppm
Less than 50 ppm
Less than 2 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
+0.5 to -0.5
< 0.2 ppm
Less than 1 ppm, above this level
Less than 10 ppm and filtered for
max. of 600 micron size
< 6 ft/sec
Figure 5: Horizontal Drain Connection
PVC tube stub
NOTE: Check dimensional data for actual PVC sizes.
Figure 6: Unit Pitch for Drain
9
90/10 Cupronickel
7 - 9
(Total Hardness)
less than 350 ppm
10 - 50 ppm
Less than 125 ppm
Less than 0.5 ppm
Less than 125 ppm
10 - 50 ppm
Less than 2 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
1000 - 1500 ppm
+0.5 to -0.5
< 0.2 ppm
Less than 1 ppm, above this level
deposition will occur
Less than 10 ppm and filtered for
max. of 600 micron size
< 6 ft/sec
PVC coupling
1.5 in.
1.5 in.
316 Stainless Steel
7 - 9
(Total Hardness)
less than 350 ppm
Less than 1 ppm
Less than 200 ppm
Less than 0.5 ppm
Less than 300 ppm
10 - 50 ppm
Less than 20 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
Less than 0.5 ppm
1000 - 1500 ppm
+0.5 to -0.5
< 0.2 ppm
deposition will occur
< 6 ft/sec
2/22/12
Vent (if needed)
PVC tube stub
1/8 in. per foot
1/2'' Pitch
Drain
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