GPCH3 Installation Manual
12
a. Suction Pressure = 143
b. Corresponding Temp. °F. = 50
c. Thermometer on Suction Line = 59°F
To obtain the degrees temperature of superheat, subtract
Superheat would fall in the ± range of allowable superheat.
Refrigerant liquid is considered subcooled when its
temperature is lower than the saturation temperature
corresponding to its pressure. The degree of subcooling
equals the degrees of temperature decrease below the
saturation temperature at the existing pressure.
1. Attach an accurate thermometer or preferably a
thermocouple type temperature tester to the liquid line
close to the pressure switch.
2. Install a high side pressure gauge on the liquid access
3. Record the gauge pressure and the temperature of
the line.
4. Compare the hi-pressure reading to the “Required
Liquid Line Temperature” chart. Find the hi-pressure
value on the left column. Follow that line right to the
column under the design subcooling value. Where the
two intersect is the required liquid line temperature.
Alternately you can convert the liquid line pressure
reading in Temperature - Pressure Chart and reading
5.
pressure to temperature conversion is the amount of
subcooling.
a. Liquid Line Pressure = 417
b. Corresponding Temp. °F. = 120°
c. Thermometer on Liquid line = 109°F.
To obtain the amount of subcooling, subtract 109°F
design subcooling range for your unit.
Models
Superheat ± 2
o
F
*PCH32441 12
*PCH33041 12
*PCH33641 9
*PCH34241 12
*PCH34841 6
*PCH36041 8
*PC
Design superheat @ 95
o
F outdoor
ambient temperature
Models
Superheat ± 2
o
F
*PHH32441 5
*PHH33041 5
*PHH33641 6
*PHH34241 7
*PHH34841 12
*PHH36041 8
*PH
Design superheat @ 95
o
F outdoor
ambient temperature
This series of electric cooling and heat pump package
heat kit. The unit is equipped to easily install the HKR/HKP
Series Electric Heat Kit. Full Installation Instructions are
included in this kit. Please use this document for guidance
installation. Permanently mark the unit’s nameplate with the
model being installed. High and low voltage connections are
detailed in the heat kit instructions.