Daikin REYA8A7Y1B9 handleiding
Handleiding
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15 Piping installation
Installation and operation manual
29
REMA5A7Y1B9+REYA8~20A7Y1B9
VRV 5 heat recovery
4P797563-1 – 2024.11
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"[435].
▪ 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"[428].
▪ 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
Indoor unit capacity index Refrigerant branch kit
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.
15.1.5 Multiple outdoor units: Possible layouts
▪ The piping between the outdoor units must be routed level or
slightly upward to avoid the risk of oil retention into the piping.
Pattern 1
a
b
b
a
Pattern 2
b
a
a
b
a
b
b
a
a To indoor unit
b Piping between outdoor units
NOT allowed (oil remains in piping)
Allowed
▪ To avoid the risk of oil retention to the outmost outdoor unit,
always connect the stop valve and the piping between outdoor
units as shown in the correct ( ) possibilities of the figure below.
a
b b
a
b b
Bekijk gratis de handleiding van Daikin REYA8A7Y1B9, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | REYA8A7Y1B9 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10896 MB |
