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Safety Precautions (2)

• Installation should be left to the authorized dealer or another trained professional. 

Improper installation may cause water leakage, electrical shock, fire, or equipment damage.

• Do not install the air conditioner where gas leakage would be exposed to open flames.  

If the gas leaks and builds up around the unit, it may catch fire.

• Establish drain piping according to the instructions of this manual.

Inadequate piping may cause water damage.

• Do not touch the heat exchanger fins. 

Improper handling may result in injury.

• Tighten the flare nut according to the specified torque. A torque wrench should be used.

If the flare nut is tightened too much, the flare nut may crack over time and cause refrigerant leakage.

• Be very careful about product transportation.

Some products use PP bands for packaging. Do not use any PP bands for a means of transportation. It is dangerous.

• Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance. 

Follow all appropriate electrical codes.

• Install the air conditioner according to the instructions given in this manual.

Incomplete installation may cause water leakage, electrical shock, fire or equipment damage. 

• Be sure to use the supplied or exact specified installation parts. 

Use of other parts may cause the unit to come to lose, water leakage, electrical shock, fire or equipment damage.

• Install the air conditioner on a solid base that is level and can support the weight of the unit.

An inadequate base or incomplete installation may cause injury or equipment damage in the event the unit falls off the base or comes loose.

• Be sure to install a ground fault circuit interrupter breaker.

Failure to install a ground fault circuit interrupter breaker may result in electrically shocks, or fire personal injury.

• For wiring, use a wire or cable long enough to cover the entire distance with no splices if possible. 

Do not use an extension cord. Do not put other loads on the power supply. 
Use a only a separate dedicated power circuit.

(Failure to do so may cause abnormal heat, electric shock, fire or equipment damage.)

• Use the specified 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 the electrical covers, 

panels or terminals.

Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shock, fire or equipment damage.

• When installing or relocating the system, be sure to keep the refrigerant circuit free from all substances other than 

the specified refrigerant (R410A), such as air.

(Any presence of air or other foreign substance in the refrigerant circuit causes an abnormal pressure rise which may result in rupture, resulting in injury.)

• During pump-down, stop the compressor before removing the refrigerant piping.

If the compressor is still running and the stop valve is open during pump-down, air will be sucked in when the refrigerant piping is removed, 
causing abnormally high pressure which could lead to equipment damage or and personal injury.

• Make sure to provide for adequate measures in order to prevent that the outdoor unit be used as a shelter by small animals.

Small animals making contact with electrical parts can cause malfunctions, smoke or fire. Please instruct the customer to keep the area around 
the unit clean.

• During installation, attach the refrigerant piping securely before running the compressor.

If the refrigerant pipes are not attached and the stop valve is open during pump-down, air will be sucked in when the compressor is run,
causing abnormally high pressure which could lead to equipment damage and personal injury.

• Electrical work should be carried out in accordance with the installation manual and the national, state and local 

electrical wiring codes.

Insufficient capacity or incomplete electrical work may cause electrical shock, fire or equipment damage.

WARNING

• The temperature of refrigerant circuit will be high, please keep the inter-unit wire away from copper pipes that are not 

thermally insulated.

• Electrical work must be performed in accordance with the NEC/CEC by authorized personnel only.

CAUTION

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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