Daikin REYA8A7Y1B9 handleiding
Handleiding
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15 Piping installation
Installation and operation manual
28
REMA5A7Y1B9+REYA8~20A7Y1B9
VRV 5 heat recovery
4P797563-1 – 2024.11
15 Piping installation
CAUTION
See "2 Specific installer safety instructions" [4 4] to make
sure this installation complies with all safety regulations.
15.1 Preparing refrigerant piping
15.1.1 Refrigerant piping requirements
CAUTION
▪ When mechanical connectors are re-used indoors,
renew the sealing parts.
▪ When flared joints are re-used indoors, re-make the
flared part.
NOTICE
The piping and other pressure-containing parts shall be
suitable for refrigerant. Use phosphoric acid deoxidised
seamless copper for refrigerant piping.
▪ Foreign materials inside pipes (including oils for fabrication) must
be ≤30mg/10m.
15.1.2 Refrigerant piping material
Piping material
Phosphoric acid deoxidised seamless copper
Flare connections
Only use annealed material.
Piping temper grade and thickness
Outer diameter
(Ø)
Temper grade Thickness (t)
(a)
6.4mm (1/4")
9.5mm (3/8")
12.7mm (1/2")
Annealed (O) ≥0.80mm
t
Ø
15.9mm (5/8") Annealed (O) ≥0.99mm
19.1mm (3/4")
22.2mm (7/8")
Half hard (1/2H) ≥0.80mm
28.6mm (11/8") Half hard (1/2H) ≥0.99mm
(a)
Depending on the applicable legislation and the maximum
working pressure of the unit (see "PS High" on the unit name
plate), larger piping thickness might be required.
15.1.3 To select the piping size
Determine the proper size using the following tables and reference
figure (only for indication).
B
A
B
c
e
C
C
D
D
d
b
3
a
8
a
9
D D
d
a
3
a
4
a
1
a
2
C
'
DD
C
''
C
b
1
a
5
a
6
D
a
7
DD
b
2
a1~a9 VRVDX indoor units
b1~b3 BS units
c First indoor branch kit (refnet)
d Indoor branch kit (refnet)
e Outdoor multi connection kit
A~D Piping
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).
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 |
