14 Electrical installation
Installation and operation manual
15
FXMQ-A
VRV system air conditioner
3P701545-1 – 2022.07
Pipe outer diameter
(Ø
p
)
Insulation inner
diameter (Ø
i
)
Insulation thickness
(t)
9.5 mm (3/8")
10~14 mm
≥13 mm
19.1 mm (3/4")
20~24 mm
22.2 mm (7/8")
23~27 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
INFORMATION
▪ For
liquid piping
, use a flare connection.
▪ For
gas piping
, use the attached piping (accessory)
and fix it with the hexagon head bolts and spring
washers (accessory)
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.
▪
Pipe length
. Keep refrigerant piping as short as possible.
1
Connect the
liquid piping
to the unit using the flare
connections.
b
c
a
d
a
Field piping
b
Flare nut (attached to the unit)
c
Refrigerant pipe connection (attached to the unit)
d
Indoor unit
2
Connect the
gas piping
using the attached piping (accessory).
Fix it to the unit using hexagon head bolts (M10×40)
(accessory) and spring washers (accessory). Place sealing (on
the attached piping) between the connection.
b
d
a
f
c
e
a
Field piping
b
Hexagon head bolt (M10×40)
c
Spring washer (accessory)
d
Attached piping
e
Sealing (on the attached piping)
f
Indoor unit
NOTICE
▪ Join the attached piping (accessory) and the field
refrigerant piping (field supply) by brazing before fixing
the attached piping to the unit.
▪ Do NOT braze the refrigerant piping directly to the
indoor unit.
CAUTION
Do NOT reuse sealing (on the attached piping). Always
use new sealing to prevent refrigerant gas leaks.
3
Insulate the refrigerant piping on the indoor unit as follows:
A
B
B
b
a
f
e
a a d
c
A
b
b a
a
a e f
A
Liquid piping
B
Gas piping
a
Insulation material (field supply)
b
Cable tie (field supply)
c
Attached piping (accessory)
d
Hexagon head bolt and spring washer (accessory)
e
Refrigerant pipe connection (attached to the unit)
f
Unit
NOTICE
Make sure to insulate all refrigerant piping. Any exposed
piping might cause condensation.
14
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
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
Prevent hazards due to inadvertent resetting of the thermal
cut-out: power to this appliance MUST NOT be supplied
through an external switching device, such as a timer, or
connected to a circuit that is regularly turned ON and OFF
by the utility.
14.1
Specifications of standard wiring
components
Component
Class
200
250
Power
supply cable
MCA
(a)
4.3 A
5.2 A
Voltage
220~240 V/220 V
Phase
1~
Frequency
50/60 Hz
Wire sizes
1.5 mm
2
(3‑core wire)
H07RN-F (60245 IEC 66)
Transmission wiring
For specification refer to the installation
manual of the outdoor unit
Summary of Contents for VRV system FXMQ200AXVMB
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