Daikin EKEXVA300 handleiding
Handleiding
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14 Piping installation
Installation and operation manual
22
EKEACBVE + EKEXVA50~500
Option kit for combination of Daikin outdoor units with field-
supplied air handling units
4P724517-1 – 2023.06
5 Insulate the thermistor with insulation tape (delivered as
accessory).
14 Piping installation
CAUTION
See "2 Specific installer safety instructions" [4 6] to make
sure this installation complies with all safety regulations.
14.1 Preparing refrigerant piping
14.1.1 Refrigerant piping requirements
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.
Refrigerant piping material
▪ Piping material: phosphoric acid deoxidised seamless copper
▪ 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.
Refrigerant piping diameter
Make sure to install liquid pipe diameters in function of the
expansion valve kit capacity class.
EKEXVA Liquid pipe (mm)
R410A R32
50 Ø6.4 Ø6.4
63 Ø9.5
(a)
Ø6.4
80 Ø9.5
(a)
Ø6.4
100 Ø9.5 Ø9.5
125 Ø9.5 Ø9.5
140 Ø9.5 Ø9.5
EKEXVA Liquid pipe (mm)
R410A R32
200 Ø9.5 Ø9.5
250 Ø9.5 Ø9.5
300 Ø12.7 Ø12.7
350 Ø12.7 Ø12.7
400 Ø12.7 Ø12.7
450 Ø15.9
(b)
Ø12.7
500 Ø15.9
(b)
Ø12.7
(a)
Use transition pipe IDØ9.5mm (delivered as accessory).
(b)
Use transition pipe IDØ15.9mm (delivered as accessory).
Refrigerant piping length and height difference
L
H
AHU
EKEXVA
AHU Air handling unit
EKEXVA Expansion valve kit
Requirement Limit
H Maximum height difference
between AHU and EKEXVA
–5/+5m (below or
above the valve kit)
L Maximum piping length between
AHU and EKEXVA
L is to be considered as a part of
the total maximum piping length.
See installation manual of the
outdoor unit for piping installation.
5m
14.1.2 Refrigerant piping insulation
▪ Use polyethylene foam as insulation material:
▪ with a heat transfer rate between 0.041 and 0.052W/mK (0.035
and 0.045kcal/mh°C)
▪ with a heat resistance of at least 120°C
▪ Insulation thickness:
▪ Piping insulation must have a minimum thickness of 13mm.
▪ Reinforce the insulation on the refrigerant piping according to
the installation environment.
Ambient
temperature
Humidity Minimum thickness
≤30°C 75% to 80% RH 15mm
>30°C ≥80% RH 20mm
14.2 Connecting the refrigerant piping
DANGER: RISK OF BURNING/SCALDING
WARNING
Only brazed connections are allowed.
14.2.1 To connect the refrigerant piping
For details, see manual of the outdoor unit.
1 Prepare the inlet/outlet field piping just in front of the connection
(do NOT braze yet).
Bekijk gratis de handleiding van Daikin EKEXVA300, 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 | EKEXVA300 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 5715 MB |
