Trane XL19i-APG02-EN, Инструкция по применению

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Section IV - Refrigerant Piping
A. Purpose
1. Liquid line - The purpose of the liquid refrigerant line is to convey refrigerant, in the liquid state, from
the outdoor unit to the indoor unit in the cooling mode and from the indoor unit to the outdoor unit in the
heating mode.
2. Gas line - The purpose of the gas line is to convey refrigerant in the gas state and oil from the indoor unit
to the outdoor unit in the cooling mode and from the outdoor unit to the indoor unit in the heating mode.
B. Limitations:
1. The XL19i contains two compressors that share the same refrigeration circuit, however, do not operate
simultaneously. Therefore, it is crucial that refrigerant lines are properly sized and do not exceed the length
set forth in the unit’s installation manual.
2. Line length limits:
A. Gas line = 80 feet linear length / of the linear length, 25 feet may be installed vertical.
B. Liquid line = 80 feet linear length / of the linear length, 25 feet may be installed vertical.
3. No exceptions shall be allowed to these piping limitations.
C. Explanation:
1. Refrigerant lines shall not exceed 80 feet total line length. / 25 feet of the 80 feet may be vertical. .
2. Liquid subcooling may not be achieved on first stage if the liquid line exceeds 80 feet.
3. Oil return may be sacrificed during first stage operation if the gas line exceeds 80 feet.
25 Ft. Max
55 Ft. Max
80 Feet Max.
55 Ft. Max
25 Ft. Max
vertical
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