Panasonic R410A VRF System Air Conditioner Instruction Manual

Panasonic R410A VRF System Air Conditioner Instruction Manual

R410A Models

Model No.

Read through the Installation Instructions before you proceed with the installation.
In particular, you will need to read under the “IMPORTANT!” section at the top of the page.

IMPORTANT! Read Before You Begin

This air conditioner must be installed by a local sales dealer or installer. This information is provided for use by authorized persons only. To ensure safe installation and trouble-free operation, you must:

Read this instruction booklet carefully before operating.

• Accurately follow the instructions for each item installation or repair.
• This air conditioner must be installed in accordance with national wiring regulations.
• Read all warnings and cautions in this manual carefully.

WARNING

This symbol is used to indicate a dangerous or unsafe course of action that could result in serious injury or death. This symbol is used to indicate a dangerous or unsafe course of action that could WARNING result in personal injury or property damage.

Seek assistance if necessary These instructions contain all the information you need for most installation conditions. If you need help with a specific problem, contact your sales/service center or certified dealer for additional instructions.

In the event of improper installation , the Manufacturer is in no way responsible for improper installation or maintenance, including failure to follow the instructions in this document.

SPECIAL PRECAUTIONS

WARNING During wiring

ELECTRIC SHOCK CAN CAUSE SERIOUS INJURY OR DEATH.

THIS SYSTEM MUST BE CONNECTED BY A QUALIFIED AND EXPERIENCED ELECTRICIAN ONLY.

• Do not apply power to the unit until all wiring and piping has been fully connected and checked.
• This system uses a very dangerous electrical voltage. Follow the wiring diagram and these instructions carefully when wiring. Improper connections and poor grounding can result in accidental injury or death.
• Connect all wiring securely. An insecure wiring connection can cause overheating at the connection points and possible fire.
• Ensure that for each block used a separate power outlet.
• Ensure that for each block a separate socket-outlet was used, and a complete disconnect device was built into the fixed electrical wiring, with separation of contacts on all poles in accordance with wiring rules.
• To prevent possible dangerous situations in case of insulation failure, the unit must be grounded.

During the transportation

Be careful when lifting and moving the indoor and outdoor units. Find a helper and bend your knees as you lift to reduce stress on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.

During installation…

Choose a solid and strong enough installation location to support or hold the unit, and then choose a location for easy maintenance. …Indoors Properly insulate all piping indoors to prevent “fogging”, which can cause dripping and water damage to walls and floors. Fire alarms and duct outlets must be at least 1.5 m away from the unit. …In damp or unstable places Use high base plates or concrete blocks to provide a solid, level foundation for the outdoor unit. This will prevent water ingress or abnormal vibration. …In a place with strong winds Fix the outdoor unit strong winds Fix the outdoor unit securely with bolts and a metal frame. Install an appropriate windscreen. …In snowy regions (for heat pump systems) Install the outdoor unit on a high platform above the level of the snowdrift. Install fans with snow protection. …In laundries Do not install in laundries. The indoor unit is not drip proof.

When connecting the refrigerant piping

WARNING

• During piping work, do not allow air other than the specified refrigerant (R410A) to enter the refrigeration cycle. This results in a reduction in volume and a risk of explosion and injury due to the high voltage in the refrigeration cycle.
• Leakage of refrigerant gas may cause fire.
• Do not add or replace refrigerant other than the specified type. Doing so may result in damage to the product, rupture, injury, etc.
• In the event of a refrigerant gas leak during during installation, ventilate the room well. Be careful not to let the refrigerant gas come into contact with fire as this will form a poisonous gas.
• The length of the piping should be as short as possible.
• Use a flare when connecting piping.  Apply refrigerant grease to the contact surfaces of the pipes to be connected before connecting them, then  tighten the nut with a torque wrench to ensure a tight connection.
• Before a test run, carefully check connections for leaks. Avoid leakage of refrigerant during installation or re-installation of piping, as well as during the repair of components of the cooling system. Handle liquid refrigerant with care as it may cause frostbite.

During service

• Turn off the power at the main switchboard (power lines) before opening the unit to check or repair electrical parts and wiring. Keep fingers and clothing away from moving parts.
• Clean up the area after finishing work, do not forgetting to check that metal shavings or pieces of wiring do not remain inside the serviced unit.

WARNING

• Do not disassemble or modify this product under any circumstances. Modified or disassembled unit may cause fire, electric shock or injury.
• Do not allow users performed cleaning inside indoor and outdoor units. Contact an authorized dealer or cleaner.
• In the event of a malfunction device, do not repair it yourself. Connect with local sales or service dealer for repairs.
• Do not touch air intake or sharp aluminum fins of the outdoor unit. This may result in injury.
• Ventilate enclosed spaces while installing or testing the cooling system. Released refrigerant gas can form hazardous toxic gas when in contact with fire or high temperatures.
• After installation, make sure no refrigerant gas leakage. Contact of the gas with a burning stove, gas water heater, electric heater, or other heat source may result in the formation of toxic gas.

Other

NOTIFICATION

The English text is the original instruction. Text in other languages is a translation of the original instructions.

IMPORTANT INFORMATION REGARDING REFRIGERANT USE

This product contains fluorinated greenhouse gases covered by the Kyoto Protocol. Do not release gases into the atmosphere.
Refrigerant type: R410A
GWP(1) value: 1975
(1)GWP = Global Warming Potential
Periodic inspections for refrigerant leaks may be regulated depending on European or local legislation. For more information, please contact your local dealer.
Label example: Outdoor unit type

Use indelible ink to complete, ÿ 1 product’s factory refrigerant charge ÿ 2 additional refrigerant charge locally, and ÿ 1 + 2 total refrigerant charge on the refrigerant charge label supplied with the product.

The completed label must be placed near the loading port (for example, on the inside of the service cover).

1. Product factory refrigerant charge: see unit name plate: see unit name plate refrigerant and charging comb

1. GENERAL PROVISIONS

1. GENERAL This brochure summarizes the installation method and location of the air conditioning system. Please read the entire set of instructions for the indoor and outdoor units completely and make sure that all listed accessories are included with the system before operation.

1-1. Tools required for installation (not supplied)

1. Flat screwdriver
2. Phillips screwdriver
3. Knife or wire stripper
4. Tape measure
5. Level with plumb line
6. Hacksaw or hole saw
7. Hole saw
8. Hole drill
9. Hammer
10. Drill
11. Pipe cutter
12. Pipe flaring tool
13. Torque wrench
14. Adjustable wrench
15. Reamer (deburring)

1-2. Accessories supplied with the unit

4-sided Cassette 60 × 60 (Type Y2)

• Use M10 screws as hanging bolts.  Field supply for suspension bolts and

1-3. Type of copper pipe and insulating material If you would like to purchase these materials separately locally, you will need:

1. Deoxidized annealed copper pipe for the refrigerant piping.
2. PE foam insulation for copper pipes exactly along the length of the pipeline. The thickness of the insulation must be at least 8 mm. 3. Use insulated copper wire for field wiring. The wire size depends on the total length of the wire. See item 4. ELECTRICAL WIRING for details.

WARNING

Please refer to your local regulations for the operation and maintenance of electrical installations before purchasing wire. See also any additional instructions or restrictions mentioned.

1-4. Additional Materials Needed for installation 1.

Tape for cooling systems (reinforced) 2. Insulated clips or clamps for wire connections (see local regulations)

3. Putty
4. Grease for refrigerant piping

5. Clips or clamps to secure the piping refrigerant

6. Libra

2. SELECTING THE INSTALLATION LOCATION

2-1. indoor unit

AVOID:

• Locations where flammable gas may leak.
• Places with high oil mist content.
• exposure to direct sunlight.
• Locations near heat sources that may affect the performance of the unit.
• Locations where outside air can directly enter the room. This can cause “condensation” on the air outlet ports, causing water to splatter or drip out of them.
• Locations where the remote control may be splashed with water or wet.
• Installing the remote control behind curtains or furniture.
• Places where high frequency is generated radiation.

DO:

• selection of an appropriate position from which evenly cool each of the corners of the room.
• selection of the position in which the ceiling is strong enough to support the weight of the block.

WARNING

The installation location must be strong enough to support four times the weight of the indoor unit. 

• selection of a position in which the length of the pipeline to outdoor unit and drain pipe will be minimal.
• Provide space for operation and maintenance, as well as unobstructed airflow around the unit.
• Install the unit within the maximum height difference from the outdoor unit and within the total piping length (L) from the outdoor unit, detailed in the installation manual supplied with the outdoor unit.
• provide space for installing the console remote control at a height of about 1 m above the floor in a place where there is no direct sunlight or cold air flow from the indoor unit.

NOTE

If the distance from the floor to the ceiling is more than 3 m, the air circulation will decrease.

• If the floor-to-ceiling height exceeds three meters, the air flow distribution deteriorates and the effect goes down.

3. INDOOR UNIT INSTALLATION PROCEDURE

3-1. Preparing for hanging from the ceiling This unit uses a drain pump. Use a spirit level to check that the unit is installed horizontally.

3-2. Ceiling hole sizes and suspension bolt location This air conditioner uses a drain drive. Install the block horizontally using a level.
The installation paper model expands or contracts depending on temperature and humidity. Check the dimensions before using it.

WARNING

During installation, be careful not to damage the electrical wires.

• The dimensions of the paper model for installation are the same as and dimensions of the openings on the ceiling.
• Be sure to discuss ceiling drilling work with relevant workers.

3-3. Positions of air conditioner case and ceiling surface

WARNING

Tighten the nut and bolt to prevent the device from falling.

3-4. Drain pipe installation

NOTE

Make sure the drain pipe is installed at a downward slope (1/100 or more) and that there are no water traps.

3-5. Indoor unit drain piping • When connecting the drain piping, do not apply excessive force to the drain port on the indoor unit. • The outer diameter of the drain connection on the indoor unit is 32mm. Piping material: VP-25 PVC pipes and pipe fittings.

• Be sure to insulate the drain piping. Thermal insulation material:
  Polyethylene foam with a thickness of more than 8 mm (local supply).

• The drainage pipeline must have a slope (from 1/50 to 1/100); avoid slope and rise to avoid backflow.

• Make sure there is no airlock in the drain hose to ensure smooth water flow and no unnatural sounds.

Checking the drain

This air conditioner uses a drain drive to drain the water. Follow the procedure below to check the operation of the drain drive. • Connect the main drain pipe
to the outdoor side of the wall and leave it temporarily until the test is complete.

• Supply water to the adjustable drain hose and check the piping for leaks.
• After completing the electrical wiring, be sure to check the drain drive for normal operation and no noise.

4. ELECTRICAL WIRING

4-1. Basic precautions for wiring

1. Before wiring, check the rated voltage of the unit indicated on its nameplate, and then wire exactly following the wiring diagram.
2. Provide that for each block a separate power outlet and circuit breaker were used. (3)
3. The unit must be grounded to prevent potential hazards in case of insulation failure.
4. Each wiring connection must be made according to the wiring diagram of the system. Incorrect wiring may cause malfunction or damage to the unit.
5. Do not allow wiring to come into contact with refrigerant piping, compressor or any other moving parts of the fan.
6. Unauthorized changes in internal wiring can be very dangerous. The manufacturer accepts no responsibility for any damage or malfunction resulting from unauthorized modifications. (7) Wiring diameter specifications vary depending on depending on the region. For information on local wiring regulations before starting work, refer to LOCAL ELECTRICAL REGULATIONS. You need to ensure that the installation complies with all relevant rules and regulations.
7. To prevent malfunction of the air conditioner caused by electrical noise, the following precautions must be observed during wiring: The remote controller wiring and inter-unit control wiring should be laid separately from the inter-unit power wiring. Use shielded wires for interconnect control wiring and ground the braid on both sides.
8. If the power cord is damaged, it must be replaced at the service center specified by the manufacturer, as this requires special tools.

4-2. Recommended wire length and diameter for the power system

1 This maximum length represents the drop voltage in 2% 2 With ring-type mounting clamp

4-3. System Wiring Diagrams

Fig. 4-1

NOTE

1. See “Recommended Length and Diameter” Wiring for the Power System” for an explanation of the dimensions “B,” “C,” “D,” “E” and “F,” in the diagram above. Please refer to the installation manual of the outdoor unit for an explanation of “A” dimension.
2. In the wiring diagram of the internal block shows terminal strips, but your equipment’s terminal strips may differ from this diagram.
3. Before turning on the power, the address of the refrigerant circuit (RC) must be set.
4. For setting the address of the remote controller, refer to the installation instructions supplied with the outdoor unit. The address setting can be automatically performed by the remote controller.

WARNING

 This equipment must be reliable grounded

WARNING

(1) When networking outdoor units, disconnect the extension terminal from the shorting plug and from all outdoor units except any of the outdoor units. (At the time of shipment: In a shorted state.) Do not remove the shorting plug in the case of a non-connected system (no connection wiring between outdoor units).

(2) Do not install the inter-unit control wiring in a loop. (Figure 4-3)

(6) Use standard European power cords (such as H05RN-F or H07RN-F corresponding

CENELEC rating (HAR)), or use cables that comply with the IEC standard. (60245 IEC57, 60245 IEC66)  The connection cable between the indoor unit and outdoor unit should be 5 or 3-core polychloroprene sheathed flexible cord * 1.5mm2. Type designation 60245 IEC 57 (H05RN-F, GP85PCP, etc.) or higher power cord.

Terminal Wiring Procedure wiring

Wiring connection examples

5. PIPING OPERATIONS

The liquid pipeline is connected with a flare nut, and the gas pipeline is connected with brazing.

5-1. Refrigerant piping connection
Use a flare Many conventional split air conditioners use a flare to connect the refrigerant pipes between the indoor and outdoor units. With this method of connection, copper pipes are flared at each end and connected using flare nuts.

Flaring procedure with flaring tool

(1) Cut the copper pipe to the desired length with a pipe cutter. It is recommended to cut approx. 30 – 50 cm longer than the desired length of the pipeline. (2) Deburr each end of the copper pipeline using a reamer or file. This process is very important and must be done carefully in order to obtain a good conical connection. Make sure that impurities (moisture, dirt, metal filings, etc.) do not get into the pipeline. (Fig. 5-1 and 5-2)

NOTE

During reaming, hold the pipe end down and make sure that no copper shavings enter the pipe. (Fig. 5-2) (3) Unscrew the flare nut from the block and install it on the copper pipe.

(4) Make a conical connection at the end of the copper pipes with a flaring tool. (Figure 5-3)

NOTE

A good conical joint should have the following characteristics:  The inside surface should be shiny and smooth the edges must be smooth the tapered sides must be the same length
Precautions before final pipe connection

(1) Install a sealed cap or stick waterproof tape to prevent dust or water from entering the pipes before use.

(2) Be sure to apply refrigerant lubricant (essential oil) to the inside of the flare nut before connecting the piping. This will reduce gas leaks. (Figure 5-4)

(3) To make a proper connection, place the spigot pipe and conical pipe directly opposite each other, then tighten the flare nut tightly to obtain an accurate match. (Figure 5-5)

• Correct the shape of the liquid pipe with a pipe bender at the installation site, and connect it to the pipeline valve on the liquid side with a cone connection.

Precautions during brazing

• Replace the air inside the pipe with nitrogen gas to prevent copper oxide film from forming during the brazing process. (The use of oxygen, carbon dioxide and freon is unacceptable.)
• Do not allow the pipeline temperature to rise too much during brazing. The nitrogen gas inside the piping can overheat, causing damage to the valves in the cooling system. Therefore, let the piping cool down during brazing.
• Use a pressure reducing valve for a cylinder with nitrogen.
• Do not use anti-oxide agents. These products can adversely affect the refrigerant and refrigerant oil and cause damage or malfunctions.

5-2. Connecting piping between indoor and outdoor units (1) Firmly connect the refrigerant piping from the inside coming out of the wall to the piping from the outside.

Indoor unit piping connection ( 1, 2… n-1)

(2) Use the specified tightening torque to secure the flare nuts. •

When removing flare nuts from piping connections or when tightening them after connecting piping, be sure to use 2 adjustable wrenches or open-end wrenches. (Figure 5-6)

If the flare nuts are overtightened, the flare connection may
be damaged, which may result in refrigerant leakage and cause injury or suffocation to occupants.

• Regarding the flare nuts on the connections piping, be sure to use the flare nuts supplied with the unit or the flare nuts for R410A refrigerant (type 2). The refrigerant piping used must have the appropriate wall thickness as shown in the table below.

Since the pressure is approximately 1.6 times the normal refrigerant pressure, using conventional flare nuts (type 1) or thin-walled pipes may cause the pipe to burst, causing injury or asphyxiation caused by refrigerant leakage.

• To prevent damage to the cone connection caused by overtightening the flare nuts, use the above table as a guide during tightening. above table as a guide during tightening.
• When tightening the flare nut on the liquid pipe, use an adjustable wrench with a nominal handle length of 200mm.

5-3. Refrigerant piping insulation Piping insulation 

Thermal insulation must be applied to all unit piping including distribution connection (local supply). * In the case of a gas pipeline, the insulation material must be heat resistant up to 120°C or more. In the case of other pipelines, it must be heat resistant up to 80°C or more. The thickness of the insulating material should be 10 mm or more.

If the temperature inside the ceiling exceeds 30°C DB and the relative humidity exceeds 70%, increase the thickness of the gas piping insulation material by 1 position.

WARNING

If a square duct is installed on the outside of the outdoor unit, make sure that there is enough free space to access the vents and install and remove panels.

Wrap the flare nuts Wrap
white tape around the flare nuts on the gas pipe connections. Then cover the piping connections with flare insulation and seal the gap at the spigot location with the supplied black insulation tape. Finally secure the insulation at both ends with the supplied vinyl clamps. (Figure 5-8) thermal insulation.

WARNING

Be sure to insulate the drain, liquid and gas piping. Insufficient thermal insulation will cause water leakage.

(1) Use thermal insulation material to cooling piping, which have high heat resistance (over 120°C).

(2) Precautions in high humidity.
This air conditioner has been tested in accordance with the requirements of “JIS Standard Fog Condition”, and no malfunctions have been confirmed. However, when operating for a long time at high humidity (condensing temperature: over 23°C), water droplets may form. In such a case, add thermal insulation material according to the procedure below:  Preparing thermal insulation material…

Adiabatic glass wool with a thickness of 10 to 20 mm.

• Attach glass wool to all air conditioners that are located in the ceiling atmosphere. 
• In addition to normal heat insulation (thickness: more than 8mm) for refrigerant  piping (gas piping: thick piping) and drain piping, add additional material with a thickness of 10mm to 30mm.

Wall sealing 

If the outdoor unit is installed higher than the indoor unit, install a trap to prevent rainwater from entering the wall when conveyed through the pipeline.

• Fill the space between the pipeline, wiring and drain hose with putty, and seal the hole in the wall. Make sure that rainwater does not seep into the wall.

5-4. Wrapping the pipes with tape (1)
At this stage, the refrigerant pipes (and electrical wiring, if allowed by local regulations) should be wrapped together with armored tape in 1 bundle.

To prevent condensate from overflowing over the edges of the drain pan, route the drain hose separately from the refrigerant piping. (2) Wind up the armor tape from the bottom of the outer block to the top of the piping where it enters the wall. When wrapping the pipeline, overlap half of each previous turn ribbons.

(3) Attach the piping bundle to the wall using 1 clamp each approx. every meter. (Figure 5-10)

NOTE

Do not wind the armor tape too tight, as this will reduce the effectiveness of thermal insulation. Also make sure that the condensate drain hose separates from the bundle and that the condensate flows away from the unit and piping.

5-5. Completing the installation After completing the insulation and wrapping of the piping, use sealing putty to seal the hole in the wall to prevent rain and drafts from entering. (Figure 5-11)

6. INSTALLATION PROCEDURE FOR TIMER REMOTE CONTROL

(OPTIONAL PART)

NOTE
See the operating instructions supplied with the optional timer remote control.

7. INSTALLING THE DECORATIVE PANEL

When using the wireless remote controller, perform steps 7-3 “When using the wireless remote controller instead of the wired remote controller” before installing the decoration panel.

7-1. Before installing the decoration panel (1) Remove the air inlet grille and air filter from the decoration panel. a) Unscrew the 2 screws on the latch of the entry grille air. (Fig. 7-1) (Reinstall the air inlet grille after installing the decoration panel.)

7-2. Installing the decorative panel The decorative panel has an installation direction. Confirm the direction by displaying the side of the pipeline. (1) Remove the air intake grille by moving the clips towards the center.

• Put the loop on the opening of the decorative panel. (Any direction of installation.) (2) Attaching the decoration panel.
• Temporarily tighten the mounting screws (3 pcs.) before attaching the decorative panel. (For temporarily fixing the front grille.)
• Place the decoration panel on the screws (3 pcs) before attaching, move the decoration panel as shown in the figure, and tighten all the screws (4 pcs).

WARNING

• Check the height from the ceiling to the unit beforehand. The mounting direction of the front grille is determined by the direction  of the unit.
• Use only the supplied 35mm screws to attach the decorative panel.
• Do not use longer screws as they may cause damage to the drain pan and other parts.

(3) Align the decorative panel and the ceiling wall so that there is no space between them. Re-adjust the height of the indoor unit if there is a gap between the ceiling wall and the decoration panel.

(4) Open the cover of the indoor control box. (3 pcs of screws) (5) Insert the decorative louver connector firmly into internal board LM and WL. Be careful not to pinch the cord between the control box and the control box cover. (6) After following the steps above, install the removed part by performing the removal steps in reverse order.

WARNING

Be sure to hook the air intake grille cable to prevent the grille from falling and resulting injury.

7-3. When using the wireless controller Move remote control instead of wired remote control

When using the wireless remote controller, move the switch (SW502) on the indoor unit control board to the ON position.

• Failure to do so will result in an alarm.

(The operation indicator on the display will blink.)

8. PROCEDURE FOR INSTALLING THE WIRELESS REMOTE CONTROL RECEIVER

NOTE

See the operating instructions supplied with the optional wireless remote control receiver.

9. APPENDIX

Care and cleaning

CAUTION Turn off the power before cleaning.

CLEANING INSTRUCTIONS

• Do not use benzine, thinner or cleaning powder. Use only soap (pH7) or neutral household detergent.
•  Do not use water that is over 40°C.

NOTE

• For best performance and
  To reduce energy consumption, clean the filter regularly.

• Contact your nearest dealer for assistance with seasonal inspection.

Remove the air filter 1 Loosen the 2 screws with a Phillips screwdriver. Move the slider to the OPEN position.

Troubleshooting If the air conditioner does not work properly, first check the following before requesting service. If it still does not work properly, contact your dealer or service center. Indoor unit Possible malfunction

Outdoor unit

Check before calling for service Probable cause

If the air conditioner still does not operate properly despite the above checks, stop operation and turn off the power switch. Then contact your local dealer and tell them the serial number and possible problem. Never repair the air conditioner yourself, as it is very dangerous. Also report the appearance of the check icon and the letters E, F, H, L, P in combination with the numbers on the LCD display of the remote control unit.

Energy Saving Tips Avoid

• Do not block the air inlet and outlet of the unit. Obstacles will cause the unit to malfunction and possible damage to it.
• Do not expose the room to direct sunlight. Use awnings, blinds or curtains. In case of heating the sun on the walls and ceiling of the room, it will take longer to cool it down. Complete
• Always keep the air filter clean. (See “Care and Cleaning”.) A clogged filter will cause deterioration of the unit.
• Keep windows, doors, and any other openings closed to prevent leakage of chilled air.

NOTE

In the event of a power failure while the unit is running If the unit’s power is temporarily cut off, it will resume operation after power is restored using the same settings as before the power failure.

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