Daikin VRV Plus Series General Information Manual page 144

Si33-003.book Page 140 Monday, June 25, 2001 9:06 AM
Refrigerant Piping
2. Piping Between
Main Unit (RXYP-)
and Sub Unit
(RXEP-)
Note:
3. Piping Limitation Make sure to perform the piping installation within the range of the maximum allowable pipe length,
allowable level difference and allowable length after branching as indicated in chapter "Example of
connection".
4. REFNET Joint For installation of the refrigerant branching kit, refer to the installation manual delivered with the kit.
Mount the REFNET joint so that it branches either horizontally or vertically.
140
Be sure to open the cornered knock out hole on the left panel of the sub unit when connecting the
branch piping between outdoor units
1
2
RXYP8,10 RXEP8,10
1 2
9
8
3 4 5 6 7
RXYP16,20 RXEP8,10
1 2
9
8
3 4 5 7
6
After brazing, pass the connection cable through the through-slots. Pass the connection cable through
the through-slots only with flange disconnected. (If the flange is still connected, the connector of the
connection cable will not pass through.)
1
3
A 2
4
B
5
1. Location to disconnect: the V groove part
(Sub unit)
2. Knock out hole (Knock out the hole using a
hammer, etc.)
Fig. 10
(V0858)
1. RXYP8,10 (Main unit)
2. RXEP8,10 (Sub unit)
10
3. Flare nut
4. Flange
11
5. Gas side atached pipe
6. Gas side branch piping (φ28.6)
12
7. Gas side attached pipe
8. Brazing
13
9. Liquid side branch piping (φ12.7)
10.Cable (Low voltage)
14
11.Liquid line
Fig. 11
12.linsulation material
15 (V0859)
13.Cable (High voltage)
14.Gas line
15.Insulation material
1. RXYP16,20 (Main unit)
2. RXEP8,10 (Sub unit)
3. Flare nut
4. Flange
5. Gas side attached pipe
6. Gas side branch piping (φ28.6)
7. Gas side attached pipe
8. Brazing
9. Liquid side branch piping (φ12.7)
Fig. 12
(V0860)
1. (Horizontal wires)
2. (A-arrow diagram)
3. (Up to ±30˚ or vertically.)
Mount the REFNET header so that it branches
horizontally.
4. (Horizontal wires)
5. (B-arrow diagram)
Fig. 13
(V0861)
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SiE33-003
Installation Manual