Daikin REYQ-T7Y1B, Технические данные инструкция, Страница: 47 / 51

3
12
• VRV Systems • REYQ-T 45
• Outdoor Unit • REYQ-T
12 Installation
12 - 3 Refrigerant Pipe Selection
3D088012A
REYQ-T
VRV4
Heat recovery Piping restrictions
Maximum piping length Maximum height difference Total piping length
Longest pipe
from the outdoor
unit or the last
multi-putdoor piping
branch
Longest pipe after
first branch
Longest pipe from
the outdoor unit
to the last multi-
outdoor piping
Indoor-to-outdoor
Outdoor unit higher
than indoor unit/
Indoor unit higher
than outdoor unit
Indoor-to-indoor Outdoor-to-outdoor Piping length
Equivalent
Maximum: ·(A+B,
A+C, A+E, A+F)
Actual Maximum:
· (B,C,E,F)·
Actual / Equivalent
Maximum: · (D)· Maximum: · (H1)· Maximum: · (H2)· Maximum: · (H3)·
Single outdoor units and
standard multi-outdoor-unit
combinations · 20hp·
· VRV · indoor units only 165/190 m (*3) 40 m (*1)
10/13 m
50 m (*2)
15 m 5 m
1000 m
Hydrobox unit 135/160 m (*3) 40 m 50/40 m 300 m (*4)/600 m (*5)
AHU (*6) 165/190 m (*3) 40 m 50/40 m 1000 m
Standard multi-outdoor-unit
combinations· 20hp· and free
multi-outdoor-unit combinations
· VRV · indoor units only
135/160 m (*3)
40 m (*1)
10/13 m
50/40 m (*2)
15 m 5 m
500 m
Hydrobox unit 40 m 50/40 m 300 m (*4)/500 m (*5)
AHU (*6) 40 m 50/40 m 500 m
Maximum piping
length
Maximum height
difference
EXV --> AHU: G EXV --> AHU: H4
AHU (*6) 5 m 5 m
NOTES
1. If all conditions below are met, the limitation can be extended up to 90m
1.1
In case of · BS1Q · units, the piping length between all indoor units and the multi BS unit is · 40· m
1.2 In case of multi BS units, the piping length between all indoor units and the multi BS unit is · 40· m
1.3 It is required to size up the liquid piping between the first branch kit and the last.
In contrast to multi BS units, · BS1Q · units are not considered branch kits. If the increased pipe size is larger than the pipe size of the main pipe, also increase the size of the main pipe.
1.4 When the piping size is increased, the piping length has to be counted as double. The total piping length has to be within limitations.
1.5 The piping length difference between the nearest indoor unit to the outdoor unit and the farthest indoor unit te the outdoor unit is · 40· m.
2. If all conditions below are met, the limitation can be extended up to 90m
2.1
If the outdoor units are positioned higher than the indoor units:
2.1.1. Minimum connection ratie: · 80% ·
2.1.2. Size up the liquid piping
2.1.3. Outdoor unit setting.
For more information, refer to the service manual.
2.2. If the outdoor units are positioned lower than the indoor unit:
2.2.1 No technical cooling
2.2.2. Size up the liquid piping
2.2.3. Outdoor unit setting
2.2.4. Minimum connection ratie
-40~60m: Minimum connection ratie: · 80%·
-60~65m: Minimum connection ratie: · 90% ·
-65~80m: Minimum connection ratie: ·100% ·
-80~90m: Minimum connection ratie: ·110% ·
3. If the equivalent piping is · 90· m, size up the main liquid piping.
4. Outdoor unit is · 20hp ·
5. Outdoor unit is · 20hp
6. Mix of · DX· units and · AHU’s·
7. If there is no branch kit present in the system, the longest pipe after the multi · BS· unit has to be · 40· m.