Bosch CLIMATE 5000 VRF RDCI Series Installation Manual page 10

10 | REFRIGERANT PIPE
Table.5-2
Pipe name
Main pipe
Indoor unit main pipe
Indoor unit aux. pipe
Indoor unit main pipe branching pipe assembly
Indoor unit aux. pipe branching pipe assembly
Outdoor unit branching pipe assembly
Outdoor unit connective pipe
SBOX equipment
5.3 Size of joint pipes for indoor unit
Table.5-3 Size of joint pipes for R410A indoor unit
Indoor unit main pipe (inches)
Capacity of
indoor unit A
Low-pressure High-pressure
(×100W)
gas side gas side
A<56 Ø12.7
56≤A<166 Ø19.1
166≤A<230 Ø22.2
230≤A<330 Ø22.2
330≤A<460 Ø28.6
460≤A<660 Ø28.6
660≤A<920 Ø34.9
920≤A<1350 Ø41.3
1350≤A Ø44.5
e.x.1: Refer to Fig.5-2, the capacity of downstream units to L2 is
71×2+140+28=310, i.e. low pressure gas pipe for L2 is Ø22.2, high
pressure gas pipe is Ø19.1, high pressure liquid pipe is Ø12.7.
5.4 Size of joint pipes for outdoor unit
Based on the following tables, select the diameters of outdoor unit main
connective pipe. When the main pipe accessory is larger on the indoor unit,
use the larger pipe accessory.
Table.5-4 Size of joint pipes for R410A outdoor unit
When the equivalent length of all liquid
pipes < 90m, the size of main pipe (inches)
Model
Low-pressure High-pressure
gas side gas side
8HP Ø22.2
10HP Ø22.2
12HP Ø25.4
14~16HP Ø28.6
18~22HP Ø31.8
24HP Ø34.9
26~32HP Ø34.9
34~48HP Ø41.3
50~64HP Ø44.5
6 720 862 437 (2016/10)
Code (As per
the Fig. 5-2)
L1
L2~L13
a, b, ...r
A, B, C, D, E
I, II, III, IV
L, M
g1, g2, g3, G1
SB1, ...SB7
Liquid Available
side branching pipe
Ø9.5 Ø6.4 IDU-BJR01
Ø15.9 Ø9.5 IDU-BJR01
Ø19.1 Ø9.5 IDU-BJR02
Ø19.1 Ø12.7 IDU-BJR02
Ø22.2 Ø12.7 IDU-BJR03
Ø22.2 Ø15.9 IDU-BJR03
Ø28.6 Ø19.1 IDU-BJR04
Ø34.9 Ø19.1 IDU-BJR05
Ø38.1 Ø22.2 IDU-BJR05
The 1st
Liquid
branching pipe for
side
indoor unit
Ø19.1 Ø9.5
IDU-BJR02
Ø19.1 Ø12.7
IDU-BJR02
Ø19.1 Ø12.7
IDU-BJR03
Ø22.2 Ø15.9
IDU-BJR03
Ø28.6 Ø15.9
IDU-BJR03
Ø28.6 Ø15.9
IDU-BJR04
Ø28.6 Ø19.1
IDU-BJR04
Ø34.9 Ø19.1
IDU-BJR05
Ø38.1 Ø22.2
IDU-BJR05
Table.5-5 Size of joint pipes for outdoor unit (R410a)
When the equivalent length of all liquid
pipes ≥ 90m, the size of main pipe (inches)
Model
Low-pressure High-pressure
gas side gas side
8HP Ø22.2
10HP Ø22.2
12HP Ø25.4
14~16HP Ø28.6
18~22HP Ø31.8
24HP Ø34.9
26~32HP Ø34.9
34~48HP Ø41.3
50~64HP Ø44.5
5.5 Branch pipes for outdoor unit
Table.5-6
Outdoor unit pipe connective opening dimension (inches)
Model
Low-pressure gas
side
8~12HP Ø22.2
14, 16HP Ø28.6
5.6 Multi pipe connection assembly and pipe
diameter for outdoor unit
Based on Table 5-7 select the branch pipe assembly for the outdoor unit.
Before installation, please read the Outdoor Unit Branching Pipe Installation
Manual carefully.
Table.5-7 Outdoor unit branch pipe assembly (Illustration)
Outdoor
Illustration
unit Qty.
2 units
g2 g1
L
Main pipe
3 units
g3 g2 g1
Main pipe
M
L
G1
4 units
g4 g3 g2 g1
Main pipe
N
M
L
G1 G2
5.7 Example
1) Take (10+12+16) HP for the three modules as an example to clarify the
pipe selection.
2) Take Fig.5-2 as an example, providing that the equivalent length of all
pipes in this system is larger than 90m.
Table.5-8
Indoor unit aux. pipe (between branch joint and branch
Capacity
joint/SB) (inches)
of indoor unit A
(×100W)
Gas side
A<160 Ø15.9
Indoor unit aux. pipe (between indoor unit and branch joint/SB) (inches)
Capacity
When branching
of indoor unit A
pipe's length ≤10m
(×100W)
Gas side Liquid side
A<56 Ø12.7 Ø6.4
160≥A≥56 Ø15.9 Ø9.5
RDCI Series – All DC Inverter Outdoor Units
The 1st
Liquid
branching pipe for
side
indoor unit
Ø19.1 Ø12.7
IDU-BJR02
Ø19.1 Ø12.7
IDU-BJR02
Ø19.1 Ø15.9
IDU-BJR03
Ø22.2 Ø15.9
IDU-BJR03
Ø28.6 Ø19.1
IDU-BJR03
Ø28.6 Ø19.1
IDU-BJR04
Ø28.6 Ø22.2
IDU-BJR04
Ø34.9 Ø22.2
IDU-BJR05
Ø38.1 Ø25.4
IDU-BJR05
High-pressure gas
Liquid side
side
Ø19.1 Ø12.7
Ø22.2 Ø15.9
Outdoor unit
Parallel connect with
connective pipe
the branching pipes
diameter
g1, g2:
8~12HP:
L:
Ø22.2/Ø19.1/Ø12.7
ODU-BJR02
14, 16HP:
Ø28.6/Ø22.2/Ø15.9
g1, g2, g3:
8~12HP:
Ø22.2/Ø19.1/Ø12.7
L+M:
14, 16HP:
ODU-BJR03
Ø28.6/Ø22.2/Ø15.9
G1: Ø34.9/Ø28.6/
Ø19.1
g1, g2, g3, g4:
8~12HP:
Ø28.2/Ø19.1/Ø12.7
L+M+N:
14, 16HP:
ODU-BJR04
Ø28.6/Ø22.2/Ø15.9
G1: Ø34.9/Ø28.6/Ø19.1
G2: Ø41.3/Ø34.9/Ø22.2
The branch pipe
assembly of indoor
unit aux. pipe
Liquid side
Ø9.5 IDU-BJR01
When branching pipe's length>10m
Gas side Liquid side
Ø15.9 Ø9.5
Ø19.1 Ø12.7