Connecting The Refrigerant Piping; To Connect The Refrigerant Piping To The Indoor Unit; Electrical Installation; Specifications Of Standard Wiring Components - Daikin CVXM20A3V1B Installation Manual

7 Electrical installation

Ø Ø
i i
Ø Ø
p p
t
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.
6.2

Connecting the refrigerant piping

DANGER: RISK OF BURNING/SCALDING
6.2.1 To connect the refrigerant piping to the
indoor unit
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
▪ Pipe length. Keep refrigerant piping as short as possible.
1 Connect refrigerant piping to the unit using flare connections.
2 Insulate the refrigerant piping on the indoor unit as follows:
c
a
d
b
a Gas pipe
b Gas pipe insulation
c Liquid pipe
d Liquid pipe insulation
NOTICE
Make sure to insulate all refrigerant piping. Any exposed
piping might cause condensation.
3 Close the slit on the refrigerant pipe connection and secure it
with a tape (field supply). Make sure there are no gaps.
4 Wrap the slit and the end of the insulation of the connected
refrigerant piping with insulation piece (accessory). Make sure
there are no gaps.
a
a
c
c
d
d
b
b
a Refrigerant pipe connection
b Refrigerant piping (field supply)
c Slit
d Tape
e Insulation piece (accessory)
7 Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
Installation manual
10
a
e
a
e
b
b
WARNING
Use an all-pole disconnection type breaker with at least
3 mm between the contact point gaps that provides full
disconnection under overvoltage category III.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
WARNING
Do NOT connect the power supply to the indoor unit. This
could result in electrical shock or fire.
WARNING
▪ Do NOT use locally purchased electrical parts inside
the product.
▪ Do NOT branch the power supply for the drain pump,
etc. from the terminal block. This could result in
electrical shock or fire.
WARNING
Keep the interconnection wiring away from copper pipes
without thermal insulation as such pipes will be very hot.
Following symbols may occur on the indoor unit:
Symbol Explanation
Measure the voltage at the terminals of main circuit
capacitors or electrical components before servicing.
7.1 Specifications of standard wiring
components
NOTICE
We recommend using solid (single-core) wires. If stranded
wires are used, twist the conductor to consolidate the end
or twist the conductor to consolidate the end in
combination with the usage of a round crimp-style terminal
on the end of the conductor. Details are described in
"Guidelines when connecting the electrical wiring" in the
installer reference guide.
Component
Interconnection cable Voltage
(indoor↔outdoor)
Wire size
7.2 To connect the electrical wiring to
the indoor unit
Electrical work should be carried out in accordance with the
installation manual and the national electrical wiring rules or code of
practice.
1 Open the terminal block.
2 Strip the wire ends approximately 15 mm.
CVXM-A, FVXM-A, CVXM-A9, FVXM-A9, FVXTM-A
220~240 V
Only use harmonized wire
providing double insulation
and suitable for applicable
voltage
4-core cable
2
1.5 mm²~2.5 mm (based on
outdoor unit)
Split system air conditioners
3P477070-2P – 2022.09