Panasonic S-22KA1E5S, Service Manual

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11.1.1 CAPACITY CORRECTION FACTOR CALCULATION METHOD
Calculation of Capacity Equivalent Length:
If the maximum extension equivalent length is over 90m or the main pipe maximum equivalent length is over 60m,
the diameter of the pipe between the outdoor unit and the first branch must be size-up in accordance to below table.
When size-up is applied, please include the Correction Factor for Capacity Equivalent Length calculation.
Pipe diameter between outdoor unit and first branch
Condition
Equivalent
Length
8HP 10HP
Correction
Factor
Outdoor unit to furthest indoor unit ≤ 90 m
Total main pipe length ≤ 60 m
9.52 mm (3/8”) -
Outdoor unit to furthest indoor unit > 90 m
Liquid Pipe
Total main pipe length > 60 m
12.70 mm (1/2”) 0.5
Outdoor unit to furthest indoor unit ≤ 90 m
Total main pipe length ≤ 60 m
19.05 mm (3/4”) 22.22 mm (7/8”) -
Outdoor unit to furthest indoor unit > 90 m
Gas Pipe
Total main pipe length > 60 m
22.22 mm (7/8”) 25.40 mm (1”) 0.5
Example
Equivalent Length = 80 m x 0.5 + 15 m = 55 m
According to result of Equivalent Length, retrieve the capacity correction from the corresponding figure.
Equivalent =
Length Main Pipe
Equivalent Length x Correction
Factor + Sub Pipe
Equivalent Length
First branch
Main Pipe Equivalent
Length: 80 m
Sub Pipe Equivalent
Length: 15 m