Daikin BSVQ36PVJU Installation Manual page 10

Example of connection 1: When 1 indoor unit is connected downstream from the BS unit
To refrigerant branch
kit or outside unit
Example of connection 2: When there is a branch downstream from the BS unit
To refrigerant branch
kit or outside unit
Table 1 Indoor unit total capacity and pipe size
Total capacity of indoor units
(Q)
Q < 54
54 ≤ Q < 60
Table 2 Indoor unit connection pipe size
Capacity type of indoor units
07 · 09 · 12 · 18
24 · 30 · 36 · 48
* The BS unit downstream connection pipe sizes are shown below. If the pipe diameter differs from that of the
indoor unit connection pipe size selected from Table 2, follow the instructions in "6-5 PIPING CONNEC-
TION" and use the included pipe to make the connection.
Table 3 BS unit connection pipe size
BS unit
BSVQ36P
BSVQ60P
9
Determine using Table 1 based
on the total capacity of the indoor
units connected downstream.
<Upstream>
Suction gas pipe
HP/LP gas pipe
Liquid pipe
Determine using Table 1 based
on the total capacity of the indoor
units connected downstream.
<Upstream> <Downstream>
Suction gas pipe
Gas pipe
BS
unit
HP/LP gas pipe
Liquid pipe
Liquid pipe
Upstream
Suction gas pipe HP/LP gas pipe
φ3/5 φ1/2
φ3/4 φ5/8
Gas pipe
φ1/2
φ5/8
Gas pipe
φ5/8
Select from Table 2 depending
on the capacity type of the
indoor unit.
<Downstream>
*
Gas pipe
BS
unit
Liquid pipe
Indoor unit
For information on selecting the size of piping between
the refrigerant branch kits and between a refrigerant
branch kit and the indoor unit, refer to the Installation
Manual that came with the outside unit or Engineering
data book.
Refrigerant branch kit
Indoor unit Indoor unit
Piping size (outer diameter)
Liquid pipe Gas pipe
φ3/5
Piping size (outer diameter)
Piping size (outer diameter)
Indoor unit
Downstream
Liquid pipe
φ3/5
φ3/5
φ3/4
Liquid pipe
φ1/4
φ3/8
Liquid pipe
φ3/8
English
(in.)
(in.)
(in.)