Panasonic s-12my2u6, CZ-18KPY2U, s-18my2u6 installation

INSTALLATION INSTRUCTIONS

– VRF System Air Conditioner –

This air conditioner uses the refrigerant R410A.

Model No.

Indoor Units

Type Indoor Unit Type

Y2 4-Way Cassette 60×60

*Panel (optional parts)

(CZ-18KPY2U)*

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.

Nominal Capacity

12 18

S-12MY2U6

S-18MY2U6

(CZ-18KPY2U)*

F616471

IMPORTANT! Please Read Before Starting

This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the

system so it operates safely and efﬁciently.

For safe installation and trouble-free operation, you must:

● Carefully read this instruction booklet before beginning.

● Follow each installation or repair step exactly as shown.

● This air conditioner shall be installed in accordance with

National Wiring Regulations.

● Pay close attention to all warning and caution notices given in this manual.

This symbol refers to a hazard

WARNING

CAUTION

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certiﬁed dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance service, including

failure to follow the instructions in this document.

SPECIAL PRECAUTIONS

WARNING

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

•Do not supply power to the unit until all wiring and tubing

are completed or reconnected and checked.

• Highly dangerous electrical voltages are used in this system.

Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

•Ground the unit following local electrical codes.

•Connect all wiring tightly. Loose wiring may cause over-

heating at connection points and a possible ﬁre hazard.

•To prevent possible hazards from insulation failure,

the unit must be grounded.

•This equipment is strongly recommended to be installed

with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it may cause electrical shock and ﬁre in case of equipment breakdown or insulation breakdown.

or unsafe practice which can result in severe personal injury or death.

This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage.

When Wiring

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum ﬁns on the air conditioner can cut your ﬁngers.

When Installing…

Select an installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

…In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and ﬂoors.

Keep the ﬁre alarm and the air

CAUTION

…In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents

water damage and abnormal vibration.

…In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air bafﬂe.

…In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

outlet at least 5 feet (1.5 m) away from the unit.

When Connecting Refrigerant Tubing

•Ventilate the room well, in the event that is refrigerant gas leaks during the installation. Be careful not to allow contact of the refrigerant gas with a ﬂame as this will cause the generation of poisonous gas.

•Keep all tubing runs as short as possible.

•Use the ﬂare method for connecting tubing.

•Apply refrigerant lubricant to the matching surfaces of

the ﬂare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection.

•Check carefully for leaks before starting the test run.

WARNING

•When performing piping work do not mix air except for speciﬁed refrigerant (R410A) in refrigeration cycle. It causes capacity down, and risk of explosion and injury due to high

tension inside the refrigerant cycle.

•Check for a leaking refrigerant! Refrigerant gas may produce a toxic gas if it

comes in contact with ﬁre.

•Do not add or replace refrigerant other than speciﬁed type. It may cause product damage, burst and injury etc.

•Do not leak refrigerant while piping work for an installation or re-installation, and while repairing refrigeration parts. Handle liquid refrigerant carefully as it may cause

frostbite.

When Servicing

•Turn the power OFF at the main power box (mains) before opening the unit to check or repair electrical parts and wiring.

•Keep your ﬁngers and clothing away from any moving parts.

•Clean up the site after you ﬁnish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.

CAUTION

•Do not touch the air inlet or the sharp aluminum ﬁns of the outdoor unit. You may get injured.

•Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped refrigerant gas, on contact with ﬁre or heat, can produce dangerously toxic gas.

•Conﬁrm after installation that no refrigerant gas is leaking. If the gas comes in contact with a burning stove, gas water heater, electric room heater or other heat source, it can cause the generation of poisonous gas.

WARNING

•This product must not be modiﬁed or disassembled under any circumstances. Modiﬁed or disassembled unit may cause ﬁre, electric shock or injury.

•Do not clean inside the indoor and outdoor units by users. Engage authorized dealer or specialist for cleaning.

•In case of malfunction of this appliance, do not repair by yourself. Contact to the sales dealer or service dealer for a repair.

Check of Density Limit

The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit.

The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its density should rise excessively. Suffocation from leakage of refrigerant is almost non-existent. With the recent increase in the number of high density buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of ﬂoor space, individual control, energy conservation by curtailing heat and carrying power, etc. Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared to conventional individual air conditioners. If a single unit of the multi air conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its density does not reach the limit (and in the event of an emergency, measures can be made before injury can occur).

Others

CAUTION

•Do not sit or step on the unit, you may fall down accidentally.

•Do not touch the air inlet or the sharp aluminum ﬁns of the outdoor unit. You may get injured.

•Do not stick any object into the FAN CASE. You may be injured and the unit may be damaged.

ASHRAE and the International Mechanical Code of the ICC as well as CSA provide guidance and deﬁne safeguards related to the use of refrigerants, all of which deﬁne a Refrigerant Concentration Level (RCL) of 25 pounds (11.3 kg) per 1,000 cubic feet (28.3 m3) for R410A refrigerant. For additional guidance and precautions related to refrigerant safety, please refer to the following documents:

International Mechanical Code 2012 (IMC-2012) (or more recently revised) ASHRAE 15 ASHRAE 34

CONTENTS

Page Page

IMPORTANT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Please Read Before Starting

1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1-1. Tools Required for Installation (not supplied)

1-2. Accessories Supplied with Unit

1-3. Type of Copper Tube and Insulation Material

1-4. Additional Materials Required for Installation

2. SELECTING THE INSTALLATION SITE . . . . . . . . . . . . . . . .6

2-1. Indoor Unit

3. HOW TO INSTALL THE INDOOR UNIT . . . . . . . . . . . . . . . . .7

3-1. Preparation for Ceiling Suspension

3-2. Ceiling Opening Dimensions and Hanging Bolt Location

3-3. Positions of Air Conditioner Body and Ceiling Surface

3-4. Installing the Drain Pipe

3-5. Indoor Unit Drain Piping

4. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4-1. General Precautions on Wiring

4-2. Recommended Wire Length and Wire Diameter for

Power Supply System

4-3. Wiring System Diagrams

■ For stranded wiring

■ Wiring samples

8. INSTALLATION OF DECORATIVE PANEL . . . . . . . . . . . . .17

8-1. Before Installing the Decorative Panel

8-2. Installing the Decorative Panel

8-3. When Using Wireless Remote Controller Instead of

Wired Remote Controller

9. HOW TO INSTALL WIRELESS REMOTE CONTROLLER

RECEIVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

N OT E

Refer to the Operating Instructions attached to the optional Wireless Remote Controller Receiver.

10. APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

■ Care and Cleaning

■ Troubleshooting

■ Tips for Energy Saving

5. HOW TO PROCESS TUBING . . . . . . . . . . . . . . . . . . . . . . . .13

5-1. Connecting the Refrigerant Tubing

5-2. Connecting Tubing Between Indoor and Outdoor Units

5-3. Insulating the Refrigerant Tubing

5-4. Taping the Tubes

5-5. Finishing the Installation

6. PRECAUTIONS ON TEST RUN . . . . . . . . . . . . . . . . . . . . . .16

7. HOW TO INSTALL THE TIMER REMOTE CONTROLLER (CZ-RTC2) OR HIGH-SPEC WIRED REMOTE

CONTROLLER (CZ-RTC3) (OPTIONAL PART) . . . . . . . . . .16

N OT E

Refer to the Operating Instructions attached to the optional Timer Remote Control Unit or optional High-spec Wired Remote Controller.

1. GENERAL

This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning.

1-1. Tools Required for Installation (not supplied)

1. Flathead screwdriver

2. Phillips head screwdriver

3. Knife or wire stripper

4. Tape measure

5. Carpenter’s level

6. Sabre saw or keyhole saw

7. Hacksaw

8. Core bits

9. Hammer

10. Drill

11. Tube cutter

12. Tube flaring tool

13. Torque wrench

14. Adjustable wrench

15. Reamer (for deburring)

1-2. Accessories Supplied with Unit

4-Way Cassette 60×60 (Y2 type)

Name Q'ty

Drain hose with a clip

Heat Insulator

1-3. Type of Copper Tube and Insulation Material

If you wish to purchase these materials separately from a local source, you will need:

1. Deoxidized annealed copper tube for refrigerant tubing.

2. Foamed polyethylene insulation for copper tubes as required to precise length of tubing. Wall thickness of the insulation should be not less than 5/16” (8 mm).

3. Use insulated copper wire for field wiring. Wire size varies with the total length of wiring. Refer to 4. ELECTRICAL WIRING for details.

CAUTION

Check local electrical codes and regulations before obtaining wire. Also, check any specified instructions or limitations.

1-4. Additional Materials Required for Installation

1. Refrigeration (armored) tape

2. Insulated staples or clamps for connecting wire (See your local codes.)

3. Putty

4. Refrigeration tubing lubricant

5. Clamps or saddles to secure refrigerant tubing

6. Scale for weighing

Band for refrigeration tubing

Flat washer for M10

Screw M5

Band for power supply cord

Operating Instructions

Installation Instructions

Warranty card

●

Use 3/8” (M10) for hanging bolts.

●

Field supply for hanging bolts and nuts.

2. SELECTING THE INSTALLATION SITE

2-1. Indoor Unit

AVOID:

● areas where leakage of flammable gas may be expected.

● places where large amounts of oil mist exist.

● direct sunlight.

● locations near heat sources which may affect the performance of the unit.

● locations where external air may enter the room directly. This may cause “condensation” on the air discharge ports, causing them to

spray or drip water.

● locations where the remote controller will be splashed with water or affected by dampness or humidity.

● installing the remote controller behind curtains or furniture.

● locations where high-frequency emissions are generated.

DO:

● select an appropriate position from which every corner of the room can be uniformly cooled.

● select a location where the ceiling is strong enough to support the weight of the unit.

WARNING

The installation position must be able to support a load four times the indoor unit weight.

● select a location where tubing and drain pipe have the shortest run to the outdoor unit.

● allow room for operation and maintenance as well as unrestricted air flow around the unit.

● install the unit within the maximum elevation difference above or below the outdoor unit and within a total tubing length (L) from the

outdoor unit as detailed in the installation manual packed with the outdoor unit.

● allow room for mounting the remote controller about 3.3ft. (1m) off the floor, in an area that is not in direct sunlight or in the flow of cool air from the indoor unit.

N OT E

Air delivery will be degraded if the distance from the floor to the ceiling is greater than 9.8ft. (3 m).

3.3ft. (1000mm)

Beam

or more

1.64ft. (500mm) or more

Obstacles

Floor

* If the height from the ﬂoor to ceiling exceeds three meters, air ﬂow distribution deteriorates and the effect is decreased.

or less

0.98ft. (300mm)

Fig. 2-1

3. HOW TO INSTALL THE INDOOR UNIT

3-1. Preparation for Ceiling Suspension

This unit uses a drain pump. Use a carpenter’s level to check that the unit is level.

3-2. Ceiling Opening Dimensions and Hanging Bolt Location

This air conditioner uses a drain up motor. Horizontally install the unit using a carpenter’s level.

The paper model for installation expand or shrink according to temperature and humidity.

Check on dimensions before using it.

CAUTION

● The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions.

● Be sure to discuss the ceiling drilling work with the workers concerned.

During the installation, care must be taken not to damage electric wires.

2-23/64 (60)

25-19/32 (650)

(Ceiling opening)

20-55/64 (530)

(Hanging bolt)

22-41/64 (575)

(Unit size)

Refrigerant pipe

(Unit size)

22-41/64 (575)

2-23/64 (60)

2-23/64

530 (Hanging bolt)

2-23/64

Drain pipe

(60)

25-19/32 (650)

(Ceiling opening)

(60)

Unit: inch (mm)

3-3. Positions of Air Conditioner Body and Ceiling Surface

11-17/32 (293) and above

Air conditioner

body

Set screw for paper model (4 pieces)

Open the ceiling board along the outer edge of the paper model.

(W3/8 or M10)

Nut

M10

Spring washer

Hanging bolt (W3/8 or M10)

Flat washer for M10 (accessory)

Nut (W3/8 or M10)

Keep the length of the

bolt from the bracket

to 1-5/8” (40 mm)

Ceiling

Adjust to the same

height

Paper model for

installation

Fig. 3-1

Unit: inch (mm)

(283)

11-9/64

Fig. 3-2 Fig. 3-3

WARNING

Tighten the nut and bolt to prevent unit from falling.

3-4. Installing the Drain Pipe

Hose clip (Accessory)

Heat insulator (Local supply) (The thickness must be at least 5/16” (8 mm).)

It may be required to take off this part for checking or servicing the drain up motor. Please do not glue.

Flexible hose with heat insulator (Accessory)

PVC pipe (O.D. ø1-17/64” (ø32mm))

(Local supply)

To be glued

Make sure that there is no clearance here.

N OT E

Make sure the drain pipe has a downward slant (1/100 or more) and that there are no water traps.

3-5. Indoor Unit Drain Piping

● During drain piping connection, be careful not to exert extra force on the drain port at the indoor unit.

● The outside diameter of the drain connection at the indoor unit is 1-17/64” (32 mm).

Piping material: Polyvinyl chloride pipe VP-25 and pipe fittings.

● Be sure to perform heat insulation on the drain piping.

Heat insulation material: Polyethylene foam with thickness

more than 5/16” (8 mm) (local supply).

● Drain piping must have down-slope (1/50 to 1/100); be sure not to provide up-and-down slope to prevent reversal flow.

● Be sure to check no air trap on drain hose and to ensure smooth water flow and no abnormal sound.

● The height of drain may be possible up to 2.46 ft. (750 mm).

● When drain set piping, install as shown in the figure below.

Unit: ft. (mm)

Drain port

Down-slope (1/50 ~ 1/100)

Elbow

Indoor

unit

Pipe clamp

Down-slope

Indoor

unit

Fig. 3-4

Upward routing

Trap

Down-slope

Fig. 3-5

Upward-slope

No Air TrapAir Trap

Fig. 3-6

Apply the head when connecting with the conﬂuence pipe. (about 4” (100 mm))

Indoor unit

2.46 (750) or less

Elbow

Fig. 3-7

Drain Test

The air conditioner uses a drain up motor to drain water. Use the following procedure to test the drain up motor operation.

● Connect the main drain pipe to exterior and leave it provisionally until the test comes to an end.

● Feed water to the flexible drain hose and check the piping for leakage.

● Be sure to check the drain up motor for normal operating and noise when electric wiring is complete.

● When the test is complete, connect the flexible drain hose to the drain port.

Down-slope (1/50 ~ 1/100)

Drain up motor

Feed water

Use VP30 or more for conﬂuence

Fig. 3-8

Drain hose

Main drain pipe

Drain

Glue the joint

port

Drain hose connection

Use the clip (accessory)

Fig. 3-9

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