Refrigerant Piping Insulation; Connecting The Refrigerant Piping; To Connect The Refrigerant Piping - Daikin VRV 5 BS4A14AJV1B Manual

15.2.3 Refrigerant piping insulation

15.3 Connecting the refrigerant piping

15.3.1 To connect the refrigerant piping

BS4~12A14AJV1B
VRV 5 branch selector unit
4P695527-1 – 2022.02
Outer diameter (Ø)
6.4 mm (1/4")
9.5 mm (3/8")
12.7 mm (1/2")
15.9 mm (5/8")
19.1 mm (3/4")
22.2 mm (7/8")
28.6 mm (1 1/8")
▪ Use polyethylene foam as insulation material:
- with a heat transfer rate between 0.041 and 0.052 W/mK (0.035 and
0.045 kcal/mh°C)
- with a heat resistance of at least 120°C
▪ Insulation thickness
Ambient temperature
≤30°C
>30°C
b
e
c
d
g
h
f
f
a BS unit
b Liquid pipe (field supply)
c HP/LP gas pipe (field supply)
d Suction gas pipe (field supply)
e Reducing joints and insulation tubes (accessory)
f Indoor unit connection set
g Liquid pipe (field supply)
h Gas pipe (field supply)
Temper grade
Annealed (O)
Annealed (O)
Half hard (1/2H)
Half hard (1/2H)
Humidity
75% to 80% RH
≥80% RH
e e
f
f
f
f
f
15 Piping installation
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Thickness (t)FN
≥0.80 mm
≥0.99 mm
≥0.80 mm
≥0.99 mm
Minimum thickness
15 mm
20 mm
a
Installer and user reference guide
Ø
t
75