Installation manual

7
PREMIER INSTALLATION MANUAL
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 fl exible connecting hose. The female adapter may exit either the front or the side of the
cabinet. The adapter should be glued to the fi eld-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.
On horizontal units, a copper stub is provided for condensate drain piping connection. An external trap is required (see
Figures 4 and 5 below). If a vent is necessary, an open stand pipe may be applied to a tee in the fi eld-installed condensate
piping.
Water Quality
In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be pres-
ent, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time,
lose heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualifi ed
service mechanic, as special solutions and pumping equipment are required. Desuperheater coils can likewise become
scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger
may require occasional fl ushing.
Units with cupronickel heat exchangers are recommended for open loop applications due to the increased resistance to
build-up and corrosion, along with reduced wear caused by acid cleaning.
Iron, Fe
2
+ (Ferrous)
Bacterial Iron Potential
Material Copper 90/10 Cupro-Nickel
pH Acidity/Alkalinity 7- 9 5 - 9
Scaling Calcium and Magnesium Carbonate (Total Hardness) less than 350 ppm (Total Hardness) less than 350 ppm
Hydrogen Sulfide
Less than .5 ppm
(rotten egg smell appears at 0.5 PPM)
10 - 50 ppm
Sulfates Less than 125 ppm Less than 125 ppm
Chlorine Less than .5 ppm Less than .5 ppm
Chlorides Less than 20 ppm Less than125 ppm
Carbon Dioxide Less than 50 ppm 10 - 50 ppm
Ammonia Less than 2 ppm Less than 2 ppm
Ammonia Chloride Less than .5 ppm Less than .5 ppm
Ammonia Nitrate Less than .5 ppm Less than .5 ppm
Ammonia Hydroxide Less than .5 ppm Less than .5 ppm
Ammonia Sulfate Less than .5 ppm Less than .5 ppm
Total Dissolved Solids (TDS) Less than 1000 ppm 1000-1500 ppm
None None
Iron Oxide
Less than 1 ppm. Above this level
deposition will occur.
Less than 1 ppm. Above this level
deposition will occur.
Suspended Solids
Less than 10 ppm and filtered for max
of 600 micron size
Less than 10 ppm and filtered for max
of 600 micron size
Threshold Velocity (Fresh Water) 5-8 ft/sec 8-12 ft/sec
Corrosion
Iron Fouling
(Biological Growth)
Erosion
Note: Grains = PPM divided by 17 • mg/l is equivalent to PPM
1/4'' Pitch
Drain
1.5"
1.5"
Vent (if needed)
3/4" PVC
3/4" barb to
glue adapter
1/8" per foot
Clear PVC hose
Plastic Hose Clamps
Copper tube stub
(Included with unit)
Figure 5: Unit Pitch for Drain
Figure 4: Horizontal Drain Connection