Nibe CLIMATEMASTER TRT Series Installation Operation & Maintenance page 12

C l i m at e M a s t e r WAT E R - S O U R C E H E AT P U M P S
Rooftop ( TRT ) Series
R e v . : N o v e m b e r 2 1 , 2 0 2 2
Water Quality Requirements, Cont'd.
Heat Pump
Measure the electrolysis voltage using a volt meter between the heat pump ground and a #14 AWG solid copper
wire electrode inserted into the water using a Pete's style access port.
The HP must be opera�ng and the water stream flowing.
The voltage measured should be less than 300mV (0.300 V). If higher than 500mV electrolysis will occure and
corrosion will result.
If voltage is measured, the cause is a high resistance earth ground or current on the neutral conductor. Remedial
measures should be performed.
Measure the current flowing through the piping system by using an amp clamp probe on the water-in line. The HP
must be opera�ng and the water stream flowing.
There should be zero amps measured. If current is present, there is leakage current to the plumbing system and it
must be rec�fied to prevent pipe corrosion.
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Measuring Electrolysis Voltage and Current
300mV
Volt Meter
Pete's Port
HP Piping
C l i m a t e M a s t e r Wa t e r - S o u r c e H e a t P u m p s
Wire Electrode inserted into port for
Voltage measurement
Water-in
Water-out
Amp Sensor to VOM for Current