Daikin SB.RKXYQ8T [24/27] Installation
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Daikin SB.RKXYQ8T [24/27] Installation

Daikin SB.RKXYQ8T [24/27] Installation
• Outdoor Unit • SB.RKXYQ-T
12
• VRV Systems • SB.RKXYQ-T
22
12 Installation
12 - 2 Refrigerant Pipe Selection
SB.RKXYQ-T
a: Heat exchanger unit
b: Compressor unit
c: Refrigerant branch kit
d: VRV DX indoor unit
L2+L3+L4 70/(90) L3+L4 40 EKEXV: Expansion valve kit
L2+L5+L6 70/(90) L5+L6 40 AHU: Air handling unit (AHU)
L2+L5+L7 70/(90) L5+L7 40 H1-H5: Height difference
L1-L7: Piping length
H2 ±30
H3 ±30
a ↔ b
L1
30
25
20
15
10
5
Notes
1.
If the recommended gas pipe (with increased size) is not available, you must use the standard size (which might result in a small capacity decrease).
130
135
140
If the equivalent pipe length between the heat exchanger unit and the furthest indoor unit is ≥90m, it is recommended to increase the size of the main gas
pipe (between compressor unit and first refrigerant branch kit).
Total piping length [m]
a ↔ b + b ↔ d
L1+L2+L3+L4+L5+L6+L7
115
120
125
a ↔ b
b ↔ d
d ↔ d
EKEXV ↔ AHU
H1 ±10 H5 ±15 H4 ±5
L1 30 L4 5
See note 1.
Maximum height difference [m]
Maximum piping length [m]
Longest pipe
After first branch
EKEXV ↔ AHU
Actual
Actual / (Equivalent)
Actual
a ↔ b
b ↔ d
c ↔ d/AHU

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