Daikin REYA16A7Y1B handleiding
Handleiding
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15 Piping installation
Installation and operation manual
26
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P684060-1C – 2024.10
A, B: Piping between outdoor unit and (first)
refrigerant branch kit
Choose from the following table in accordance with the outdoor unit
total capacity type. Pipe A is in case of multi-connection the sum of
the outdoor units connected upstream. In case there is no first indoor
branch kit (c), pipe A is connected to the first BS unit.
HP class Piping outer diameter [mm]
Liquid pipe Suction gas
pipe
HP/LP gas
pipe
5~10 9.5 19.1 15.9
12~18 12.7 22.2 19.1
20~24 12.7 28.6 22.2
26~28 15.9 28.6 22.2
C: Piping between refrigerant branch kit and BS
units OR between two refrigerant branch kits OR
between two BS units
Choose from the following table in accordance with the indoor unit
total capacity type, connected downstream. Do not let the
connection piping exceed the refrigerant piping size chosen by the
general system model name.
Example
▪ Downstream capacity for C' = [capacityindexofunita1] + [unita2]
+ [unita3] + [unita4] + [unita5] + [unita6] + [unita7]
▪ Downstream capacity for C'' = [capacity index of unit a3] +
[unita4]
Indoor unit
capacity index
Piping outer diameter [mm]
Liquid pipe Suction gas
pipe
HP/LP gas
pipe
<150 9.5 15.9 12.7
150≤x<290 19.1 15.9
290≤x<450 12.7 22.2 19.1
450≤x<620 28.6 22.2
≥620 15.9
D: Piping between refrigerant branch kit or BS unit
and indoor unit
Pipe size for direct connection to indoor unit must be the same as
the connection size of the indoor unit (in case indoor unit is VRVDX
indoor).
Indoor unit capacity
index
Piping outer diameter [mm]
Gas pipe Liquid pipe
10~32 9.5 6.4
40~80 12.7
100~140 15.9 9.5
200~250 19.1
Size-up of piping
e
e
e
h
gg
g h
h
b
d
c
a
f
f
a Outdoor unit
b Main pipes (increase size)
c First refrigerant branch kit
d Last refrigerant branch kit
e Indoor unit
f BS unit
g Piping between first and last refrigerant branch kit
(increase size)
h Piping between last refrigerant branch kit and indoor unit
If a size-up of the piping is required, refer to the table below:
Size up
HP class Liquid piping outer diameter [mm]
5~10 9.5 → 12.7
12~24 12.7 → 15.9
26~28 15.9 → 19.1
▪ In case the required pipe sizes (inch sizes) are not available, it is
also allowed to use other diameters (mm sizes), taken the
following into account:
▪ Select the pipe size nearest to the required size.
▪ Use the suitable adapters for the changeover from inch tomm
pipes (field supply).
▪ The additional refrigerant calculation has to be adjusted as
mentioned in "16.3 To determine the additional refrigerant
amount"[432].
▪ Applicable pipe size up is decided upon field piping rules
determined by the installation needs. See technical data and
installer user reference guide for more details about the required
pipe size up for your installation.
15.1.4 To select refrigerant branch kits
Refrigerant refnets
For piping example, refer to "15.1.3To select the piping size"[425].
▪ When using refnet joints at the first branch counted from the
outdoor unit side, choose from the following table in accordance
with the capacity of the outdoor unit (example: refnet joint c).
HP class Refrigerant branch kit
8+10 KHRQ23M29T9
12~20 KHRQ23M64T
22~28 KHRQ23M75T
▪ For refnet joints other than the first branch, select the proper
branch kit model based on the total capacity index of all indoor
units connected after the refrigerant branch.
Indoor unit capacity index Refrigerant branch kit
<200 KHRQ23M20T
200≤x<290 KHRQ23M29T9
290≤x<640 KHRQ23M64T
≥640 KHRQ23M75T
▪ Concerning refnet headers, choose from the following table in
accordance with the total capacity of all the indoor units connected
below the refnet header.
Indoor unit capacity index Refrigerant branch kit
<290 KHRQ23M29H
290≤x<640 KHRQ23M64H
≥640 KHRQ23M75H
▪ For refnet joints between BS unit and indoor units
Indoor unit capacity index Refrigerant branch kit
≤250 KHRQ22M20TA
INFORMATION
Maximum 8 branches can be connected to a header.
▪ Use the branch kit BHFQ23P907A for an outdoor multi connection
piping kit for 2 outdoor units.
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Productinformatie
| Merk | Daikin |
| Model | REYA16A7Y1B |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10147 MB |
