Original message
| referman
 |  "Refrigerant lines"
, posted Fri 14 Jan 09:04  
What are some problems assoicated with heat pumps with refrigerant lines that exceed the manufacturers fifty foot limit.
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Replies:
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| cneiner
| "Re(1):Refrigerant lines" , posted Fri 25 Mar 16:33
Refrigerant is less dense at lower pressures. The denser the refrigerant vapor is when it returns to the compressor the more refigerant the compressor can move.
Pressure drop causes a drop in compressor capacity. Long refrigeration lines, elbows, valves, and improperly sized suction lines cause pressure drop.
Extremely long refrigerant lines that run through warmer ambient conditions can cause excessive superheats. Typical return gas temperature ratings should not exceed 65°.
Longer lines should be sized, pitched, and insulated properly.
R&D Hussmann
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| xenos
Webmaster 
| "Re(1):Refrigerant lines" , posted Sat 15 Jan 12:39
Lack of oil return and drop in capacity. You can also inrease the possibility of liquid migration into the suction line in the off cycle.
Xenos.
The best way to escape a problem is to solve it.
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