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22
NS SPLIT INSTALLATION MANUAL
Once the proper superheat setting has been achieved, replace and tighten the seal cap.
Warning: There are 8 total (360°) turns on the superheat adjustment stem from wide open to fully closed. When adjusting
the superheat stem clockwise (superheat increase) and the stop is reached, any further clockwise turning adjustment will
damage the valve.
Determining Subcooling
Measure the temperature of the liquid line on the small refrigerant line (liquid line) just outside the split cabinet. This
location will be adequate for measurement in both modes unless a signicant temperature drop in the liquid line is
anticipated.
Measure the liquid line pressure by attaching refrigerant gauges to the schrader connection on the liquid line service
valve.
3. Convert the pressure obtained in Step 2 to the saturation temperature by using the R-410A Pressure/Temperature
Conversion Chart on page 23.
4. Subtract the temperature in Step 1 from the temperature in Step 3. The difference will be the subcooling value for
that unit. Refer to the tables on page 24 for subcooling ranges at specic enter water conditions.
1.
1.
2.
Refrigeration (continued)