Air Evacuation; Evacuation Instructions - Carrier 42/38SHDS050 Installation Manual

Note On Adding Refrigerant
CAUTION
• Refrigerant charging must be performed after wiring, vacuuming and the leak test.
DO NOT exceed the maximum allowable quantity of refrigerant or overcharge the system.
•
Doing so can damage or impact the unit' s function.
• Charging with unsuitable substances may cause explosions or accidents. Ensure that the
appropriate refrigerant is used.
• Refrigerant containers must be opened slowly. Always use protective gear when charging the
system.
DO NOT mix refrigerants types.
•
Some systems require additional charging depending on pipe lengths. The standard pipe length
is 15m. The additional refrigerant to be charged can be calculated using the following formula:
Liquid Side Diameter
6.35(1/4")
(Total pipe length -
standard pipe length)
x15g(0.16oZ)/m(ft)
NOTE: The nominal capacity and energy efficiency are tested
meter piping on specification or nameplate).
NOTE: The number of bends is up to the length of the max
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9.52(3/8")
(Total pipe length -
standard pipe length)
x30g(0.32oZ)/m(ft)
based on pipe length of 5 meter (please refer refrigerant charge amount of 5
Extend pipe length will reduce the capacity and energy efficiency
height drop. Usually for each 10m need a bend.
12.7(1/2")
(Total pipe length -
standard pipe length)
x65g(0.69oZ)/m(ft)
of the unit.