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INSTALLATION INSTRUCTIONS
Allowing Piping Length and Drop Between Indoor and Outdoor (cont.)
2. Allowable piping length and drop
between indoor and outdoor unit.
Outdoor 1
The outdoor is more than one unit.
• Only for 2 unit ODU combination (X+Y), use piping kit: HZG-R20B
When the distance between outdoors(L1, L3) is over 6-9/16 ft., the oil trap must be set (upright
projecting pipe, 7-7/8 in. high), as the figure :
Outdoor 2
L2
Below 6-9/16 ft.
L1
Over 7-7/8 in.
Over 7-7/8 in.
L3<32-13/16 ft.
L1+L3<32-13/16 ft.
L2+L3<32-13/16 ft.
Note:
V1---V4: VP unit
A---F: indoors (coling / heating selection possible)
G---H: indoors (cooling only)
49-5000878 Rev. 0
Outdoor 3
Outdoor is only one
L5
Outdoor 3
L4
Below 6-9/16 ft.
L5
L3
L11
V1
L12 L13
A
The connection sketch of stop valves and pipes
1
2
3
4
1
2
A
B
C
A
B
C
1 ---- High pressure gas pipe stop valve
2 ---- Low pressure pipe stop valve
3 ---- Liquid pipe stop valve
4 ---- Charge valve
Detail view for stop valve of HR unit
High pressure gas pipe
Low pressure gas pipe
L6
L11
L16
V1
L17
L15
L14
L12 L13
B
C
A
L6
L7
L8
L9
L16
L18
L20
V2
V3
V4
L10
L22
L17
L19
L21
L15
L14
E
F
G
B
C
D
H
H2
3
4
1
2
3
4
A
B
C
C
B
A
A ---- High pressure gas pipe
B ---- Low pressure pipe
C ---- Liquid pipe
Service port
Liquid pipe
Charge value
L7
L8
L9
L18
L20
V2
V3
V4
L22
L10
L19
L21
D
E
F
G
H
H2
Liquid pipe
Indoor Unit
Gas pipe
Liquid pipe
Connection
Indoor Unit
Kit
Gas pipe
Liquid pipe
Indoor Unit
Gas pipe
Liquid pipe
Indoor Unit
Gas pipe
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