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INDOOR MAIN PIPE SELECTION (L3, L4, L5, L6)
Downstream Indoor Unit
Capacity (Buth)
Gas Pipe Diameter Liquid Pipe Diameter Indoor Unit Branch Pipe
A < 56,700 5/8 in. 3/8 in. V8IDBP01
56,700 < A < 78,500 3/4 in. 3/8 in. V8IDBP01
MAIN OUTDOOR UNIT PIPE (L1) DIAMETER AND PIPE LENGTH BASED ON TOTAL CAPACITY
Model No. Capacity Liquid Pipe Length
Main
Gas Pipe
Diameter
Required
Main
Liquid Pipe
Diameter
Required
Maximum
Number of
Indoor Units
Total Capacity
of Indoor Units
Combination
Ratio Range
Indoor Unit
Branch Pipe
VPA036H4 3 Ton
Less than 148 ft. (45 m) 5/8 in.
3/8 in. 5 45 to 130%
V8IDBP01
More than 148 ft. (45 m) 3/4 in.
VPA048H4 4 Ton
Less than 148 ft. (45 m) 5/8 in.
3/8 in. 7 45 to 130%
More than 148 ft. (45 m) 3/4 in.
VPA060H4 5 Ton
Less than 148 ft. (45 m) 3/4 in.
3/8 in. 9 45 to 130%
V8IDBP01
More than 148 ft. (45 m) 7/8 in. V8IDBP02
NOTES:
Use appropriate reducer/adapter (not provided) at the outdoor unit pipe connections to meet the piping size requirements.
Refrigerant Pipe Selection
INDOOR PIPE SELECTION (L2, A, B, C, D, E, F, G, H)
Indoor Unit Type Indoor Unit Size Gas Pipe Diameter Liquid Pipe Diameter
V22A Compact 360° Cassette 007, 009, 012, 015 1/2 in. 1/4 in.
V33A Standard/High Effi ciency 360°
Cassette
009, 012, 015 1/2 in. 1/4 in.
018, 024, 030,
036, 048
5/8 in. 3/8 in.
VCFA Ceiling/Floor Mount Non-Ducted
012, 015 1/2 in. 1/4 in.
018, 024, 030,
036, 048, 054
5/8 in. 3/8 in.
VHIA Concealed High Static Ducted 024, 030, 036, 048 5/8 in. 3/8 in.
VMDA Concealed Medium Static Ducted
007, 009, 012, 015 1/2 in. 1/4 in.
018, 024, 030,
036, 048
5/8 in. 3/8 in.
VVCA Vertical Air Handler
018, 024, 030,
036, 048, 054
5/8 in. 3/8 in.
VWMA Wall-Mounted Non-Ducted
007, 009, 012, 015 1/2 in. 1/4 in.
018, 024, 030 5/8 in. 3/8 in.
NOTES:
If the total capacity of the indoor units is greater than 100% of the capacity of the outdoor unit, individual indoor unit capacities will be reduced.
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