Super Free Match
Service Manual
INSTALLATION
94
6 REFRIGERATION PIPING WORK
6.1 Allowable Length and Drop Height of Connecting Pipe
htgneL sepip ehT stros ehT （m）
Maximum
allowable
length
Total length between outdoor unit and BU
modules
L1+L2+L3+L4+L5 ≤55
Total length
between indoor
unit and BU
MULTIU48HP230V1BO
1A+1B+1C+2A+2B+2C+
3A+3B
≤80
Between indoor unit and BU module 1A;1B;1C;2A;2B;2C;3A;3B ≤15
Between indoor unit and the 1st branch
L4+1B;L2+L5+2A;
L2+L3+3B
≤40
Maximum
allowable
length
Between outdoor and indoor units H1 ≤30
Between outdoor units and BU H2 ≤30
Between BU and BU modules H3 ≤15
Between indoor and indoor units H4 ≤15
Minimum
allowable
length
Between outdoor and the 1st branch L1 ≥5
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
epiP saG stroS （mm） Liquid Pipe（mm）
Outdoor unit
MULTIU48HP230V1BO
Φ15.9 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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