Daikin R410A SPLIT Series, FTXNG09AXVJU, RXNG09AXVJU Manual

• Before choosing the installation site, obtain user approval.

Indoor Unit
The indoor unit should be sited in a place where:

• The restrictions on installation specified in the indoor unit installation drawing are met.
• Both air intake and exhaust have clear paths met.
• The unit is not in the path of direct sunlight.
• The unit is away from the sources of heat or steam.
• There is no source of machine oil vapor (this may shorten indoor unit life).
• Cool air is circulated throughout the room.
• The unit is away from electronic ignition type fluorescent lamps (inverter or rapid start type). As these may shorten the remote controller range.
• The unit is at least 3.5 ft away from any television or radio set (unit may cause interference with the picture or sound).
• Do not install the units at or near doorway.
• Do not operate any heating apparatus too close to the air conditioner unit or use in room where mineral oil, oil vapour or oil steam exist, this may cause plastic part to melt or deform as a result of excessive heat or chemical reaction.
• When the unit is used in kitchen, keep flour away from going into suction of the unit.
• This unit is not suitable for factory use where cutting oil, mist or iron powder exist or voltage fluctuates greatly.
• Do not install the units at area like hot spring or oil refinery plant where sulphide gas exists.
• Ensure the color of wires of the outdoor unit and the terminal markings are same to the indoors respectively.
• 
  DO NOT INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM. Do not use joined and twisted wires for incoming power supply. The equipment is not intended for use in a potentially explosive atmosphere

Wireless Remote Controller

• Do not expose the remote controller to direct sunlight (this will hinder receiving signals from the indoor unit).
• Turn on all the fluorescent lamps in the room, if any, and find the site where remote controller signals are properly received by the indoor unit (within 23ft (7 metres)).

Outdoor Unit
The outdoor unit should be installed in a place where:

• The restrictions on installation specified in the outdoor unit installation drawing are met.
• Condensate draining from the bottom of the unit causes no trouble or problem in particular.
• Both air intake and exhaust have clear paths of air.
• The unit is in a clear path of air but not directly exposed to rain, strong winds, or direct sunlight.
• There is no fear of inflammable gas leakage.
• The unit is no directly exposed to salt, sulfidized gases, or machine oil vapour (they may shorten outdoor unit life).
• Operation noise or hot (cold) air flow does not cause trouble to neighbours.
• The unit is at least 10ft (3 metres) away from any television or radio antenna.
• Condensation dripping from the stop valve cannot damage anything during operation.

When operating the air conditioner in a low outdoor ambient temperature, be sure to follow the instructions described below.

• To prevent exposure to wind, install the outdoor unit with its suction side facing the wall.
• Never install the outdoor unit at a site where the suction side may be exposed directly to wind.
• To prevent exposure to wind, it is recommended to install a baffle plate on the air discharge side of the outdoor unit.
• In heavy snow areas, select an installation site where the snow will not affect the unit.
• If there is a likelihood of snow accumulating on the outdoor unit, attach a snow protection hood.
• In high humidity areas or heavy snow areas, it is recommended to attach a drain pan heater to prevent ice build-up from the bottom frame.

INDOOR/OUTDOOR UNIT INSTALLATION DRAWINGS

* Be sure to add the proper amount of additional refrigerant. Failure to do so may result in reduced performance.
** The suggested shortest pipe length is 10ft (3m), in order to avoid noise from the outdoor unit and vibration. (Mechanical noise and vibration may occur depending on how the unit is installed and the environment in which it is used.)

INDOOR INSTALLATION GUIDELINE

INSTALLING THE MOUNTING PLATE

• The mounting plate should be installed on a wall which can support the weight of the indoor unit.

1. Temporarily secure the mounting plate to the wall, make sure that the panel is completely level, and mark the drilling points on the wall.
2. Secure the mounting plate to the wall with screws of size #8 x 1" (M4 x 25mm).

Recommended mounting plate retention spots and dimensions

INDOOR UNIT FTXNG 09/12

All dimensions are in inch (mm)

INDOOR UNIT FTXNG18

INSTALLING INDOOR UNIT

Right-side, right-back, or right-bottom piping.

1. Attach the drain hose to the underside of the refrigerant pipes with adhesive vinyl tape.
2. Wrap the refrigerant pipes and drain hose together with insulation tape.
3. Pass the drain hose and refrigerant pipes through the wall hole, then set the indoor unit on the mounting plate hooks by using the markings at the top of the indoor unit as a guide.
4. Open the front panel, then open the service lid. (Refer to installation tips.)
5. Pass the inter-unit wire from the outdoor unit through the feed-through wall hole and then through the back of the indoor unit. Pull them through the front side. Bend the ends of tie wires upward for easier work in advance. (If the inter-unit wire ends are to be stripped first, bundle wire ends with adhesive tape.)
6. Press the bottom frame of the indoor unit with both hands to set it on the mounting plate hooks. Make sure the wires do not catch on the edge of the indoor unit.
   Left-side, left-back, or left-bottom piping.

How to replace the drain plug and drain hose

• Removal method

1. Rotate to detach wire clip from hook on the right and remove the drain hose.
2. Remove the drain plug on the left side and attach it to the right side.
3. Insert the drain hose and tighten by rotating the wire clip to hook. Forgetting to tighten this may cause water leakages.

Drain hose attachment position
The drain hose is on the back of the unit.

1. Attach the drain hose to the underside of the refrigerant pipes with adhesive vinyl tape.
2. Be sure to connect the drain hose to the drain port in place of a drain plug.
3. Shape the refrigerant pipe along the pipe path marking on the mounting plate.
4. Pass drain hose and refrigerant pipes through the wall hole, then set the indoor unit on mounting plate hooks, using the markings at the top of indoor unit as a guide.
5. Pull in the inter-unit wiring.
6. Connect the inter-unit piping.

7. Wrap the refrigerant pipes and drain hose together with insulation tape as right figure.
8. While take extra care while going through activities so that the interconnecting wires do not damaged by indoor unit, press the bottom edge of indoor unit with both hands until it is firmly caught by the mounting plate hooks. Secure indoor unit to the mounting plate with the screws (M4 × 12L).

Wall embedded piping.
Follow the instructions given

Left-side, left-back, or left-bottom piping

1. Insert the drain hose to this depth so it won't be pulled out of the drain pipe.

The indoor unit must be installed in such a way so as to prevent short circuit of the cool discharged air with the hot return air. Please follow the installation clearance shown in the figure. Do not place the indoor unit where there could be direct sunlight shining on it. Also, this location must be suitable for piping and drainage, and be away from doors or windows.

All dimensions are in inch (mm)

• How to attach the indoor unit Hook the claws of the bottom frame to the mounting plate.
• How to remove the indoor unit. Push up the marked area (at the lower part of the front grille) to release the claws.

DRAIN PIPING

• Connect the drain hose, as described below.
  
• Water Drainage
  
• Remove the air filters and pour some water into the drain pan to check the water flows smoothly.
  

• When drain hose requires extension, obtain an extension hose commercially available. Be sure to thermally insulate the indoor section of the extension hose.
  
• When connecting a rigid polyvinyl chloride pipe (inside diameter 5/8" (16mm)) directly to the drain hose attached to the indoor unit as with embedded piping work, use any commercially available drain socket (inside diameter 5/8" (16mm)) as a joint.
  

WIRING

* The figures shown in the table are for information purpose only. They should be checked and selected to comply with the local/national codes of regulations. This is also subject to the type of installation and conductors used.
** The appropriate voltage range should be checked with label data on the unit.

Note: Take care to ensure that all wiring between indoor unit and outdoor unit has a consistent connection. Any splices can cause communication errors.

Circuit Breaker Rating

• Entire PCB replacement required if fuse failure occurs.

• All wires must be firmly connected.
• Make sure all the wire do not touch the refrigerant piping, compressor or any moving parts.
• Make sure no external pressure is applied to the terminal connectors and wires.
• Make sure all the covers are properly fixed to avoid any gap.
• Recommended to use round crimp-style terminal for connecting wires to the power supply terminal block. Connect the wires by matching to the indication on terminal block. (Refer to the wiring diagram attached on the unit).
  

• Use the correct screwdriver for terminal screws tightening. Unsuitable screwdrivers can damage the screw head.
• Over tightening can damage the terminal screws.
• Do not connect wires of different gauges to same terminal.
• Keep wiring in an orderly manner. Prevent the wiring from obstructing other parts and the terminal box cover.
  

OUTDOOR INSTALLATION GUIDELINE

INSTALLING OUTDOOR UNIT

• Where a wall or other obstacle is in the path of outdoor unit's intake or exhaust airflow, follow the installation guidelines below.
• For any of the below installation patterns, the wall height on the exhaust side should be 47-1/4" (1200mm) or less.

RXNG09/12

RXNG18

DRAIN WORK

Drain work. (Heat Pump Unit Only)

1. Use drain socket for drainage.
2. If the drain port is covered by a mounting base or floor surface, place additional foot bases of at least 30mm (1-3/16") in height under the outdoor unit's feet.
3. In cold areas, do not use a drain hose with the outdoor unit. (Otherwise, drain water may freeze, impairing heating performance.)

FLARING THE PIPE END

1. Cut the pipe end with a pipe cutter.
2. Remove burrs with the cut surface facing downward so that the filings do not enter the pipe.
3. Put the flare nut on the pipe.
4. Flare the pipe.
5. Check that the flaring is properly made.

REFRIGERANT PIPING

1. Use the flare nut fixed to the main unit. (This is to prevent the flare nut from cracking as a result of deterioration over time.)
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 to the flare nuts and gas leakage.

Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand. Then tighten them fully with the torque wrenches.

1. Cautions on pipe handling
   1. Protect the open end of the pipe against dust and moisture.
   2. All pipe bends should be as gentle as possible. Use a pipe bender for bending.
2. Selection of copper and heat insulation materials When using commercial copper pipes and fittings, observe the following:
   1. Insulation material: Polyethylene foam Heat transfer rate: 0.041 to 0.052W/mK (0.035 to 0.045kcal/(mh •˚C) Refrigerant gas pipe's surface temperature reaches 110˚C (230°F) max. Choose heat insulation materials that will withstand this temperature.
   2. Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.

      Piping size, mm (in)	Minimum bend radius	Piping thickness	Thermal insulation size	Thermal insulation thickness
      6.40 (1/4")	1-3/16" (30mm) or more	1/32" (0.8mm) (C1220T-O)	I.D. 5/16" (8mm) - 13/32" (10mm)	13/32" (10mm) Min.
      9.52 (3/8")	1-3/16" (30mm) or more		I.D. 15/32" (12mm) - 9/16" (15mm)
      12.70 (1/2")	1-9/16" (40mm) or more		I.D. 9/16" (14mm) - 10/16" (16mm)
      15.88 (5/8")	1-15/16" (50mm) or more	5/128" (1.0mm) (C1220T-O)	I.D. 10/16" (16mm) - 25/32" (20mm)
      19.05 (3/4")	1-15/16" (50mm) or more		I.D. 25/32" (20mm) - 15/16" (24mm)

3. Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as below.

NOTICE Do NOT exceed the unitʼs maximum working pressure (see "Max. Allowable Pressure" on the unit name plate).

SPECIAL PRECAUTIONS WHEN DEALING WITH R410A UNIT

R410A is a new HFC refrigerant which does not damage the ozone layer. The working pressure of this new refrigerant is 1.6 times higher than conventional refrigerant (R22), thus proper installation/ servicing is essential.

• Never use refrigerant other than R410A in an air conditioner which is designed to operate with R410A.
• POE or PVE oil is used as lubricant for R410A compressor, which is different from the mineral oil used for R22 compressor. During installation or servicing, extra precaution must be taken not to expose the R410A system too long to moist air. Residual POE or PVE oil in the piping and components can absorb moisture from the air.
• To prevent mischarging, the diameter of the service port on the flare valve is different from that of R22.

• Use tools and materials exclusively for refrigerant R410A. Tools exclusively for R410A are manifold valve, charging hose, pressure gauge, gas leak detector, flare tools, torque wrench, vacuum pump and refrigerant cylinder.
• As an R410A air conditioner incurs higher pressure than R22 units, it is essential to choose the copper pipes correctly.
• If the refrigerant gas leakage occurs during installation/ servicing, be sure to ventilate fully. If the refrigerant gas comes into contact with fire, a poisonous gas may occur.
• When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigerant cycle.

PURGING AIR AND CHECKING GAS LEAKAGE

1. *1 If the compound pressure gauge pointer swings back, the refrigerant may have water content or there may be a loose pipe joint. Check all pipe joints and retighten nuts as needed, then repeat step 3) through 5).

REFILLING REFRIGERANT

Check the type of refrigerant to be used on the machine nameplate. Precautions when adding R410A Fill from the liquid pipe in liquid form. This is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal operation.

1. Before filling, check whether the cylinder has a siphon attached or not. (It should have something like "liquid filling siphon attached" displayed on it.)

   Filling a cylinder with an attached siphon		Filling other cylinders
   	Stand the cylinder upright when filling. There is a siphon pipe inside, so the cylinder need not be upside-down to fill with liquid.		Turn the cylinder upside-down when filling.

• Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering.

PUMP DOWN OPERATION

In order to protect the environment, be 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 five to ten minutes, close the liquid stop valve with a hexagonal wrench.
4. After two to three minutes, close the gas stop valve and stop forced cooling operation.
5. Attach the valve cap once procedures are complete.

WIRING

ELECTRICAL WIRING CONNECTION

09/12 class

[Method of mounting conduit]

• A protection plate is fixed for protection from the high-voltage section.

1. Dismount the stop valve cover by removing the screw.
2. Dismount the protection plate by removing the 2 screws.
3. Dismount the conduit mounting cover by removing the 2 screws.
4. Pass wires through the conduit and secure them with a lock nut.
5. After completing the work, reattach the stop valve cover, the conduit mounting cover, and the protection plate to its original position.

18/24 class

[Method of mounting conduit]

1. Dismount the service lid by removing the screws.
2. Pass wires through the conduit and secure them with a lock nut.
3. After completing the work, reattach the service lid to its original position.

CHECKLIST BEFORE COMMISSIONING

Do NOT operate the system before the following checks are OK:

• The indoor unit is properly mounted.
• The outdoor unit is properly mounted.
• The system is properly grounded and the ground terminals are tightened.
• The fuses or locally installed protection devices are installed according to this document, and have NOT been bypassed.
• The power supply voltage matches the voltage on the identification label of the unit.
• There are NO loose connections or damaged electrical components in the switch box.
• There are NO damaged components or squeezed pipes on the inside of the indoor and outdoor units.
• There are NO refrigerant leaks.
• The refrigerant pipes (gas and liquid) are thermally insulated.
• The correct pipe size is installed and the pipes are properly insulated.
• The stop valves (gas and liquid) on the outdoor unit are fully open.
• The following field wiring between the outdoor unit and indoor unit has been carried out according to this document and local codes.
• Drainage Make sure drainage flows smoothly. Possible consequence: Condensate water might drip.
• The indoor unit receives the signals of the user interface.
• The specified wires are used for the interconnection cable.

INDICATION LIGHTS

IR Signal Receiver
When an infrared remote control operating signal has been transmitted, the signal receiver on the indoor unit will respond as below to confirm acceptance of the signal transmission.

Heatpump Unit
The table shows the LED indicator lights for the air conditioner unit under normal operation and fault conditions. The LED indicator lights are located at the side of the air conditioner unit.
The heat pump units are equipped with an "auto" mode sensor whereby it will provide reasonable room temperature by switching automatically to either "cool" or "heat" mode according to the temperature set by the user.

LED Indicator Lights for Heatpump Unit

LED Indicator Lights: Normal Operation & Fault Conditions For Heatpump Unit

			Operation
	Light blue		Cool mode
	Orange		Heat mode
	Light blue		Auto mode in Cooling operation
	Orange		Auto mode in Heating operation
	Yellow		Fan mode on
	Light blue		Dry mode on
	Dimmed Light blue		Sleep mode on
	Light blue		Timer on
	Orange		Defrost operation
	Light blue		Unit error
ON Blinking

OPERATING RANGE

Heatpump model
Model : FTXNG09/12/18
RXNG 09/12/18

MAINTENANCE AND SERVICE

• Before carrying out any maintenance or repair activity, ALWAYS switch off the circuit breaker on the supply panel, remove the fuses or open the protection devices of the unit.
• Do NOT touch live parts for 10 minutes after the power supply is turned off because of high voltage risk.
• Please note that some sections of the electric component box are hot.
• Make sure you do NOT touch a conductive section.
• Do NOT rinse the unit. This may cause electric shocks or fire.

3. Checklist for yearly maintenance of the outdoor unit
   Check the following at least once a year:

• Outdoor unit heat exchanger. The heat exchanger of the outdoor unit can get blocked up due to dust, dirt, leaves, etc. It is recommended to clean the heat exchanger yearly. A blocked heat exchanger can lead to too low pressure or too high pressure leading to worse performance.

SAFETY PRECAUTIONS

PROP 65 WARNING
FOR CALIFORNIA CONSUMERS

Cancer and Reproductive Harm www.P65Warnings.ca.gov.

Read the precautions in this manual carefully before operating the unit.

• The precautions described herein are classified as WARNING and CAUTION.
  They both contain important information regarding safety. Be sure to observe all precautions without fail.
• Meaning of WARNING and CAUTION notices.

  	Failure to follow these instructions properly may result in personal injury or loss of life.
  	Failure to observe these instructions properly may result in property damage or personal injury, which may be serious depending on the circumstances.

• The safety marks shown in this manual have the following meanings:

  Be sure to follow the instructions.

  Be sure to establish a ground connection.

  Never attempt.

• After completing installation, conduct a trial operation to check for faults and explain to the customer how to operate the airconditioner and take care of it with the aid of operation manual.

• Ask your dealer or qualified person to carry out installation work. Do not attempt to install the air conditioner yourself. Improper installation may result in water leakage, electric shocks or fire.
• This appliance is not intended for use by persons, including children, with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
• Install the air conditioner according to the instructions given in this manual. Incomplete installation may cause water leakage, electrical shock, or fire.
• Be sure to use only the specified accessories and parts for installation work. Failure to use the specified parts may result in the unit falling, water leakage, electric shocks or fire.
• Install the air conditioner on a foundation strong enough to withstand the weight of the unit. A foundation of insufficient strength may result in the equipment falling and causing injury.
• Electrical work must be performed in accordance with relevant local and national regulations and with instructions in this installation manual. Be sure to use a dedicated power supply circuit only. Insufficiency of power circuit capacity and improper workmanship may result in electric shocks or fire.
• Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance.
• Use a cable of suitable length. Do not use tapped wires or an extension lead, as this may cause overheating, electric shocks or fire.
• Make sure that all wiring is secured, the specified wires are used, and that there is no strain on the terminal connections or wires. Improper connections or securing of wires may result in abnormal heat build-up or fire.
• When wiring the power supply and connecting the wiring between the indoor and outdoor units, position the wires so that the control box lid can be securely fastened. Improper positioning of the control box lid may result in electric shocks, fire or overheating terminals.
• After connecting interconnecting and supply wiring, be sure to shape the cables so that they do not put undue force on the electrical covers or panels. Install covers over the wires. Incomplete cover installation may cause terminal overheating, electrical shocks, or fire.
• When installing or relocating the air conditioner, be sure to bleed the refrigerant circuit to ensure it is free of air, and use only the specified refrigerant (R410A). The presence of air or other foreign matter in the refrigerant circuit cause abnormal pressure rise, which may result in equipment damage and even injury.
• If refrigerant gas leaks during installation, ventilate the area immediately. Toxic gas may be produced if the refrigerant comes into contact with fire.
• After completing installation, check for refrigerant gas leakage. Toxic gas may be produced if the refrigerant gas leaks into the room and comes into contact with a source of fire, such as a fan heater, stove or cooker.
• 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 abnormal pressure in the refrigeration cycle, which may result in equipment damage and even injury.
• During installation, attach the refrigerant piping securely before running the compressor. If the refrigerant pipes are not attached and the stop valve is open when the compressor is run, air will be sucked in, causing abnormal pressure in the refrigeration cycle, which may result in equipment damage and even injury.
• Be sure to ground the air conditioner. Do not ground the unit to a utility pipe, lightning conductor or telephone earth lead. Improper grounding may result in electric shocks.
• The circuit must be protected with safety devices in accordance with local and national codes, i.e. a circuit breaker.

• All electrical wiring must not touch the water piping or any moving parts of the fan motors.
• Confirm that the unit has been switched OFF before installing or servicing the unit.
• Disconnect from the main power supply before servicing the air conditioner unit.
• DO NOT pull out the power cord when the power is ON.
  This may cause serious electrical shocks which may result in fire hazards.
• Keep the indoor and outdoor units, power cable and transmission wiring, at least 3.5 ft from TVs and radios, to prevent distortedpictures and static.
  Depending on the type and source of the electrical waves, static may be heard even when more than 1m away.

• Do not install the air conditioner at any place where there is danger of flammable gas leakage. In the event of a gas leakage, build-up of gas near the air conditioner may cause a fire to break out.
• While following the instructions in this installation manual, install drain piping to ensure proper drainage and insulate piping to prevent condensation. Improper drain piping may result in indoor water leakage and property damage.
• Tighten the flare nut according to specified method such as with a torque wrench. If the flare nut is too tight, it may crack after prolonged use, causing refrigerant leakage.
• Do not overcharge the unit. This unit is factory pre-charged. Overcharge will cause over-current or damage to the compressor.
• Ensure that the unit's panel is closed after service or installation. Unsecured panels will cause the unit to operate noisily.
• Sharp edges and coil surfaces are potential locations which may cause injury hazards. Avoid being in contact with these places.
• Before turning off the power supply set the remote controller's ON/OFF switch to the "OFF" position to prevent accidental tripping of the unit. If this is not done, the unit's fans will start turning automatically when power resumes, posing a hazard to service personnel or the user.
• Make sure to provide for adequate measure in order prevent that the outdoor unit be used as a shelter by small animals. Small animal making contact with electrical parts can cause malfunctions, smoke or fire. Please instruct the customer to keep the area around the unit clean.
• The temperature of refrigerant circuit will be high, please keep the inter-unit wiring away from copper pipes that are not thermally insulated.
• Only qualified personnel can handle, fill, purge and dispose of the refrigerant.

Documents / Resources

References

• http://www.p65warnings.ca.gov

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