5 Installation
Installation manual
8
FBA35~140A2VEB
Split system air conditioners
4P456962-1C – 2017.04
g
h
j
k
f
i
f
L N
1 2 3
P1 P2 F1 F2 T1 T2
a
d
b
c
e
a
Switch box cover
b
Transmission wiring port
c
Power supply wiring port
d
Wiring diagram
e
Switch box
f
Plastic clamp
g
User interface wiring
h
Terminal board for unit transmission wiring
i
Power supply wiring
j
Power supply terminal board
k
Transmission wiring between units
5
Turn ON the power.
6
Start cooling operation (see To perform a test run).
7
Gradually put approximately 1 l of water through the air
discharge outlet, and check for leaks.
c
e
f
8
d
b
a
a
Water inlet
b
Portable pump
c
Water inlet cover
d
Bucket (adding water through water inlet)
e
Drain outlet for maintenance
f
Refrigerant pipes
8
Turn OFF the power.
9
Disconnect the electrical wiring.
10
Remove the control box cover.
11
Disconnect the power supply and earth.
12
Reattach the control box cover.
When electrical wiring is finished already
1
Start cooling operation (see To perform a test run).
2
Gradually pour approximately 1 l of water through the air
discharge outlet, and check for leaks (see When electrical
wiring is not finished yet).
5.2
Connecting the refrigerant piping
DANGER: RISK OF BURNING
5.2.1
To connect the refrigerant piping to the
indoor unit
WARNING: FLAMMABLE MATERIAL
The R32 refrigerant (if applicable) in this unit is mildly
flammable.
(a)
(a)
Refer to the outdoor unit specifications for the type of
refrigerant to be used.
▪
Pipe length
. Keep refrigerant piping as short as possible.
▪
Flare connections
. Connect refrigerant piping to the unit using
flare connections.
▪
Insulation
. Insulate the refrigerant piping on the indoor unit as
follows:
A
B
a
d
c
e f
b
b
a
d
c
e f
b
b
2
4
3
g
1
2
3
4
g
A
B
1
A
Gas piping
B
Liquid piping
a
Insulation material (field supply)
b
Cable tie (accessory)
c
Insulation pieces: Large (gas pipe), small (liquid pipe)
(accessories)
d
Flare nut (attached to the unit)
e
Refrigerant pipe connection (attached to the unit)
f
Unit
g
Sealing pads: Medium 1 (gas pipe), medium 2 (liquid pipe)
(accessories)
1
Turn up the seams of the insulation pieces.
2
Attach to the base of the unit.
3
Tighten the cable ties on the insulation pieces.
4
Wrap the sealing pad from the base of the unit to the top of
the flare nut.
NOTICE
Make sure to insulate all refrigerant piping. Any exposed
piping might cause condensation.
5.3
Connecting the electrical wiring
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
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.
5.3.1
Guidelines when connecting the electrical
wiring
Tightening torques
Wiring
Screw size
Tightening torque
(N•m)
Interconnection
cable
(indoor↔outdoor)
M4
1.18~1.44
User interface cable
M3.5
0.79~0.97
