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Wiring (2)

• Do not turn ON the safety breaker until all 

work is completed.

1)

Strip the insulation from the wire (3/4 inch 
(20mm)).

2)

Connect the connection wires between the 

indoor and outdoor units 

so that the 

terminal numbers match

. Tighten the 

terminal screws securely. We recommend a 
flathead screwdriver be used to tighten the 
screws.

3)

Pull the wire and make sure that it does not disconnect. Then fix the wire in place with a wire stop.

When connecting the connection wires to the terminal board using a single 
core wire, be sure to perform curling.
Problems with the work may cause heat and fires.

Stripping wire at terminal block

CAUTION (2)

Observe the notes mentioned below when wiring to the power supply terminal board.
Precautions to be taken for power supply wiring.
Use a round crimp-style terminal for connection to the power supply  terminal board.

In case it cannot be used due to unavoidable reasons, be sure to observe the following 
instruction.
Place the round crimp-style terminals on the wires up to the covered part and 
secure in place. 

• Ground terminal installation 

Use the following method when installing 
the round crimp-style terminal. 

CAUTION (1)

Stranded wire

Round crimp-style
terminal

1
2
3

1 2 3

Safety 
breaker 
20A

Earth leakage 
circuit breaker

Earth

Firmly fix the wires with 
the terminal screws.

Outdoor unit

Indoor 
unit

Power supply
60Hz 208-230V

L

1

L

2

If the length of a connection wire is 
33ft (10m) or more, use AWG14 wire.

Use AWG 16 or AWG 14 wire 
for inter-unit wiring.

Use AWG 14 wires.

Good

Wrong

Round crimp-
style terminal

Flat washer

Screw

Flat washer

Round crimp-
style terminal

Screw

(C) Tube

(Accessory)

(D) Binding band

(Accessory)

Secure the wires firmly 
using the binding band, as 
shown in the figure. 
Secure firmly, making sure 
no outside pressure is 
exerted on the terminals.

Power supply terminal block

L

1

L

2

1

2

3

• Use the specified wires and 

connect them securely.

• Shape the wires so that there 

is no lifting of the service hatch 
or other structural parts.

Summary of Contents for RKS30

Page 1: ... if it comes in contact with fire such as from a fan heater stove or cooking device Exposure to this gas could cause severe injury or death Do not ground units to water pipes telephone wires or lightning rods because incomplete grounding could cause a severe shock hazard resulting in severe injury or death and to gas pipes because a gas leak could result in an explosion which could lead to severe ...

Page 2: ...ecified types of wires for electrical connections between the indoor and outdoor units Follow all state and local electrical codes Firmly clamp the inter unit wire so their terminals receive no external stresses Incomplete connections or clamping may cause terminal overheating fire or equipment damage After connecting all wiring be sure to shape the cables so that they do not put undue stress on t...

Page 3: ... under the unit anything which must be kept away from moisture NOTE Cannot be installed hanging from ceiling or stacked Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installed In accordance with the foundation drawing fix the unit securely by means of the foundation bolts Prepare four sets of 1 2 inch M12 foundation b...

Page 4: ...mm of work space below the ceiling surface 9 7 8 250mm from wall Allow space for piping and electrical servicing Right side plate 13 5 8 345mm Clamping material Insulation tube Bottom frame Tape Also insulate the connection on the outdoor unit Use tape or insulating material on all connections to prevent air from getting in between the copper piping and the insulation tube Be sure to do this if th...

Page 5: ...ps into their matching drain hole Drain socket A into drain hole I and drain caps B into drain hole II and III After insertion turn them about 40 clockwise Be sure not to insert them into wrong drain holes or there causes water leakage View from bottom 3 Connect vinyl hose on the market internal diameter of 1 inch 25mm to drain socket A If the hose is too long and hangs down fix it carefully to pr...

Page 6: ...9 7N m Valve cap tightening torque Service port cap tightening torque 7 9 10 8ft lbf 10 8 14 7N m CAUTION 1 Use the flare nut fixed to the main unit To prevent cracking of the flare nut by aged deterioration 2 To prevent gas leakage apply refrigeration oil only to the inner surface of the flare Use refrigeration oil for R410A 3 Use torque wrenches when tightening the flare nuts to prevent damage t...

Page 7: ...mage the vacuum pump or the unit 1 Connect projection side of charging hose which comes from gauge manifold to gas stop valve s service port 2 Fully open gauge manifold s low pressure valve Lo and completely close its high pressure valve Hi High pressure valve subsequently requires no operation 3 Do vacuum pumping and make sure that the compound pressure gauge reads 29 9inHg 0 1MPa 1 4 Close gauge...

Page 8: ...sure to pump down when relocating or disposing of the unit 1 Remove the valve cap from liquid stop valve and gas stop valve 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop forced cooling operation Forced cooling operation 1 Press the Forced Operation switch SW1 to begin forced ...

Page 9: ...er harmonics This unit uses an inverter which means that it must be used an earth leak detector capable handling harmonics in order to prevent malfunctioning of the earth leak detector itself 4 Use an all pole disconnection type breaker with at least 1 8 inch 3mm between the contact point gaps 5 When carrying out wiring connection take care not to pull at the conduit 6 Do not connect the power wir...

Page 10: ...voidable reasons be sure to observe the following instruction Place the round crimp style terminals on the wires up to the covered part and secure in place Ground terminal installation Use the following method when installing the round crimp style terminal CAUTION 1 Stranded wire Round crimp style terminal 1 2 3 1 2 3 Safety breaker 20A Earth leakage circuit breaker Earth Firmly fix the wires with...

Page 11: ...door temperature rises the operation will start again 1 If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind provide a windbreak wall 2 Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings 3 Do not place humidifiers or other items which might raise the humidity in rooms where facilit...

Page 12: ...ter it is turned off 1 3 Carry out the test operation in accordance with the operation manual to ensure that all functions and parts are working properly The air conditioner requires a small amount of power in its standby mode If the system is not to be used for some time after installation shut off the circuit breaker to eliminate unnecessary power consumption If the circuit breaker trips to shut...

Page 13: ...3P235796 1F M08B133E ...

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