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2-2 Connecting pipes
1. After deciding the installation location, carry out flaring work of liquid pipe and apply thin layer of refrigerant oil (procure locally) to
the flared seat surface.
2. Connect the field refrigerant piping.
A dimensions (mm)
A
Copper
pipe O.D.
Flare tool for R410A
Flare tool for R22, R407C
(mm)
Clutch-style
Die
0~0.5
[6.35(1/4")
Copper
pipe
0~0.5
[9.52(3/8")
w When flare tools for R22, R407C are used for R410A flaring work, refer to the table above. The size adjustment gauge can be used to secure A measurements.
Apply thin layer of ester oil, ether oil or alkylbenzene oil to the entire flare seat surface.
wDo not apply it to the screws as it may cause loosening of the flare nut.
Make sure to use the flare nut attached to the unit
(Using commercial item may cause breaks).
3. Wrap the enclosed pipe cover3 around the liquid pipe connection, pushing it on the outside of External LEV Box1.
4. Secure both ends of pipe cover3 with the enclosed bands4 to make sure it is insulated.
Pipe cover3
Band4
External LEV Box1
30~40mm
Joint pipe2
R410A : Only for indoor unit 63 models
R407C : Only for indoor unit 50, 63 models
3
Wiring procedure
Wiring procedure differs depending on the indoor unit. To remove the electrical box cover when connecting the cables of each
indoor unit, refer to the installation manuals of each indoor unit. Fix the cable together with the on-site wirings (power supply cable,
transmission cable and remote controller cable). Use the fastener
Example: PKFY-P . VBM-E
Electrical box
Fastener5
Use the clamp for on-site wiring under the electrical
parts box to fix the cable together with the on-site
wirings (power supply cable, transmission cable and
remote controller cable).
45- i2-
Tightening torque
Flare dimensions
N . m(kgf . cm)
[
B dimensions
(mm)
1.0~1.5
8.7~9.1
14~18(140~180)
34~42(340~420)
1.0~1.5
12.8~13.2
Cross-section view of connection
30mm
Band4
Pipe cover3
Insulation material
for refrigerant pipe
Refrigerant pipe
Insulation material
for refrigerant pipe
(Procure locally)
to bind the cables in the electrical box.
5
Controller board
Connect to the CN60 connector.
Cable for External LEV Box
Make sure to complete the work below before turning on the indoor unit
At factory shipment, the connector for LEV in the indoor unit is connected to the connector (CN60) on indoor controller
board. Replace the connector (CN60) with the white connector of the cable (accessory: 100mm) for External LEV Box1.
Bind the removed lead wire of LEV with fastener5 and place it in the electrical box.
Linear expansion valve
LEV
Wiring shown below can be applied when the connector board and LEV are connected with relay.
Remove the relay connector in electrical box. Connect the lead wire of the connector (CN60) to the connector of the cable
(Accessory:5300mm) of External LEV Box1. Bind the removed lead wire of LEV with fastener5 and place it in the electrical
box. Remove the cable (accessory: 100mm) since it is unnecessary.
Push in
Linear expansion valve
LEV
Relay connector
4
Test run
Carry out test run referring to the installation manual enclosed with indoor/outdoor unit.
Indoor unit
Cable (Accessory:100mm)
Electrical box
Cable (Accessory:5300mm)
Put the connector
in the electrical box.
CN60 connector (LEV, white)
Controller board
Controller board
Indoor unit
Electrical box
CN60 connector (LEV, white)
Remove
Cable (Accessory:5300mm)
Put the connector
Lead wire of
in the electrical box.
Connector (CN60)
External LEV Box1
External LEV Box1
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