Water Quality Table | 23LV Heat Pump Series
8 733 905 683 (2016/09)LV Heat Pump Series
WATER QUALITY TABLE
Condensate Connections
A drain line must be connected to the heat pump
and pitched away from the unit a minimum of 1/8”
per foot to allow the condensate to flow away from
the unit.
This connection must be in conformance with local
plumbing codes. A trap must be installed in the
condensate line to ensure free condensate flow.
(Heat Pumps are not internally trapped).
A vertical air vent is sometimes required to avoid air
pockets.
The depth of the trap depends on the amount of positive
or negative pressure on the drain pan. A second trap
must not be included.
The horizontal unit should be pitched approximately
1/4” towards the drain in both Duct System
All LV Series models are provided with a return air duct
flange and supply air duct connections.
Refer to unit Dimensional Drawings for physical
dimensions of the collar and flange. Page# 55. A flexible
connector is recommended for supply and return air
duct connections on metal duct systems. All metal
ducting should be insulated with a minimum of 1” (one
inch) duct insulation to avoid heat loss or gain and
prevent condensate from forming during the cooling
operation. Application of the unit to non-insulated duct
work is not recommended as the unit’s performance will
be adversely affected.
Table 5: 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
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