Daikin FHA35AVEB98, Installation And Operation Manual

Page: 18 / 28

13 Piping installation
Installation and operation manual
18
FHA-A(9)
Split system air conditioner
3P668115-4E – 2022.11
13.1.2 Refrigerant piping insulation
▪ 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
Pipe outer diameter
(Ø
p
)
Insulation inner
diameter (Ø
i
)
Insulation thickness
(t)
6.4 mm (1/4") 8~10 mm ≥10 mm
9.5 mm (3/8") 12~15 mm ≥13 mm
12.7 mm (1/2") 14~16 mm ≥13 mm
15.9 mm (5/8”) 17~20 mm ≥13 mm
Ø
i
Ø
i
t
Ø
p
Ø
p
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, the thickness of the insulation materials should be at
least 20 mm to prevent condensation on the surface of the
insulation.
13.2 Connecting the refrigerant piping
DANGER: RISK OF BURNING/SCALDING
13.2.1 To connect the refrigerant piping to the
indoor unit
CAUTION
Install the refrigerant piping or components in a position
where they are unlikely to be exposed to any substance
which may corrode components containing refrigerant,
unless the components are constructed of materials that
are inherently resistant to corrosion or are suitably
protected against corrosion.
WARNING: MILDLY FLAMMABLE MATERIAL
The R32 refrigerant (if applicable) in this unit is mildly
flammable. Refer to the outdoor unit specifications for the
type of refrigerant to be used.
Refrigerant piping can be connected from following directions:
a
b
c
a Rear right piping
b Right piping
c Upward piping
Rear right piping
1 Remove the rear piping pipe port cover and cut out the holes for
piping. When cutting out the holes, make sure to avoid the knob
part of the cover.
a
b
a Rear refrigerant piping
b Rear piping pipe port cover
2 Run the field supply pipes through the cut out holes.
3 After the drain and refrigerant piping is finished, install the pipe
port cover back. Run all the cables through the clamp of the
pipe port cover and fix.
a b c
a Clamp of the pipe port cover
b Cables
Upward piping
INFORMATION
L-shaped connection piping kit (optional accessory) is
required.
1 Remove the top pipe port cover and cut out the holes for piping.
When cutting out the holes, make sure to avoid the knob part of
the cover. Use an L-shaped connection piping kit (optional
accessory) for the piping. Run the pipes through the cut out
holes.
a
b
a Upward refrigerant piping
b Top pipe port cover
Right piping
1 Remove the reinforcing plate at the right side and put back the
screw in the original position on the indoor unit.
2 Remove the decoration side panel.
3 Remove the rectangular part of the decoration side panel.