Super Free Match
Service Manual
INSTALLATION97
6 REFRIGERATION PIPING WORK
6.1 Allowable Length and Drop Height of Connecting Pipe
The sorts The pipes Length（m）
Total length between outdoor unit and BU
modules
L1+L2+L3+L4+L5 ≤55
GWHD(48S)NM3CO ≤80
Total length
between indoor
unit and BU
GWHD(56S)NM3CO
1A+1B+1C+2A+2B+2C+
3A+3B
≤90
Between indoor unit and BU module 1A;1B;1C;2A;2B;2C;3A;3B ≤15
Maximum
allowable
length
Between indoor unit and the 1st branch
L4+1B;L2+L5+2A;
L2+L3+3B
≤40
Between outdoor and indoor units H1 ≤30
Between outdoor units and BU H2 ≤30
Between BU and BU modules H3 ≤15
Maximum
allowable
length
Between indoor and indoor units H4 ≤15
Between outdoor and the 1st branch L1 ≥5 Minimum
allowable
length
Between BU and the branch L3;L4;L5
as possible
as short
BU module should be placed within the level between the outdoor unit and indoor unit.
6.2 Dimension of Connecting Pipe
Sorts Gas Pipe（mm） Liquid Pipe（mm）
GWHD(48S)NM3CO Φ15.9
Outdoor unit
GWHD(56S)NM3CO Φ19.05
Φ9.52
Between outdoor unit and the 1st branch The pipe L1 Φ19.05 Φ9.52
Between the 1st and the 2nd branch The pipe L2 Φ15.9 Φ9.52
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