CLIMATEMASTER WATER-SOURCE HEAT PUMPS
Tranquility
®
(TRL) Series
R e v. : N o v e m b e r 1 1 , 2 0 2 1
C l i m a t e M a s t e r Wa t e r-S o u rc e H e a t P u m p s
50
Water Quality Standards, Cont’d.
Strainer / Filter Sizing
Mesh Size
Particle Size
Microns
MM
Inch
20
840
0.840
0.0340
30
533
0.533
0.0210
60
250
0.250
0.0100
100
149
0.149
0.0060
150
100
0.100
0.0040
200
74
0.074
0.0029
ppm = parts per million
ppb = parts per billion
OHM meter
Measuring Earth Ground Resistance
0.02
�
Building
Ground Rod
Well Casing
Measure the earth ground bond using an Ohm meter between the building’s
ground rod and the steel well casing.
The resistance measured should be zero Ohms. The NEC allows a resistance
to ground up to 20 Ohms. Any resistance above zero, indicates a poor earth
ground which may be the result of a hot neutral line or that conductive water is
present. Both of these may lead to electrolysis and corrosion of the heat pump
piping. A check for both should be performed and resolved.
Note if the well casing is plastic, a conductive path can be achieved by inserting
a #6 AWG bare copper wire into the well water. Remove the temporary
conductor when finished.