Refrigeration Piping Work; Allowable Length And Drop Height Of Connecting Pipe; Dimension Of Connecting Pipe - Gree GWHD(48S)NM3CO Service Manual

6 REFRIGERATION PIPING WORK

6.1 Allowable Length and Drop Height of Connecting Pipe

Total length between outdoor unit and BU
Total length
Maximum
between indoor
allowable
unit and BU
length
Between indoor unit and BU module
Between indoor unit and the 1st branch
Between outdoor and indoor units
Maximum
Between outdoor units and BU
allowable
Between BU and BU modules
length
Between indoor and indoor units
Minimum Between outdoor and the 1st branch
allowable
length
BU module should be placed within the level between the outdoor unit and indoor unit.

6.2 Dimension of Connecting Pipe

Outdoor unit
Between outdoor unit and the 1st branch
Between the 1st and the 2nd branch
The sorts
modules
GWHD(48S)NM3CO
GWHD(56S)NM3CO
Between BU and the branch
Sorts
GWHD(48S)NM3CO
GWHD(56S)NM3CO
The pipe L1
The pipe L2
The pipes
L1+L2+L3+L4+L5
1A+1B+1C+2A+2B+2C+
3A+3B
1A;1B;1C;2A;2B;2C;3A;3B
L4+1B;L2+L5+2A;
L2+L3+3B
H1
H2
H3
H4
L1
L3;L4;L5
Gas Pipe（mm） Liquid Pipe（mm）
Φ15.9
Φ19.05
Φ19.05
Φ15.9
Super Free Match
Service Manual
Length（m）
≤55
≤80
≤90
≤15
≤40
≤30
≤30
≤15
≤15
≥5
as possible
as short
Φ9.52
Φ9.52
Φ9.52
97 INSTALLATION