Panasonic s-24mu2u6, s-36mu2u6 installation

INSTALLATION INSTRUCTIONS

Air Conditioner

This air conditioner uses the refrigerant R410A.

Model No.

Indoor Units

Type Indoor Unit Type

S-24MU2U6 S-36MU2U6

U2 4-Way Cassette 36” × 36”

(CZ-36KPU3U)* (CZ-36KPU3U)*

*Panel (optional parts)

Nominal Capacity

24 36

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.

F616838

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 or

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.

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

• Pay particular attention to refrigerant leakages.

• Ventilate the room immediately, 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 toxic gas.

• Keep all tubing runs as short as possible.

• 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.

• If the refrigerant comes in contact with a ﬂame, it produces a toxic gas.

• 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 .

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. Leaked 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 toxic 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.

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.

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). 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 m 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

) for

CONTENTS

Page Page

IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Please Read Before Starting

Check of Density Limit

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

4-Way Cassette Type (Type U2) . . . . . . . . . . . . . . . . . . . . . 7

■

3-1. Preparation for Suspending

3-2. Suspending the Indoor Unit

3-3. Placing the Unit Inside the Ceiling

3-4. How to Process Tubing

3-5. Installing the Drain Pipe

7. HOW TO INSTALL THE CEILING PANEL . . . . . . . . . . . . 21

4-Way Cassette Type (CZ-36KPU3U) . . . . . . . . . . . . . . . 21

■

7-1. Preparation for Ceiling Panel Installation

7-2. How to Install the Ceiling Panel

7-3. Others

8. PRECAUTIONS ON TEST RUN . . . . . . . . . . . . . . . . . . . 29

Checkpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

■

9. HOW TO INSTALL WIRELESS REMOTE CONTROLLER

RECEIVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

N OT E

Refer to the Operating Instructions attached to the optional

Wireless Remote Controller Receiver.

10. APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Care and Cleaning

■

Troubleshooting

■

Tips for Energy Saving

■

4. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4-1. General Precautions on Wiring

4-2. Important Note for Wiring 4-Way Cassette Type

4-3. Recommended Wire Length and Wire Diameter for

Power Supply System

4-4. Wiring System Diagrams

5. HOW TO PROCESS TUBING . . . . . . . . . . . . . . . . . . . . . 18

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. HOW TO INSTALL THE TIMER REMOTE CONTROLLER OR HIGH-SPEC WIRED

REMOTE CONTROLLER (OPTIONAL PART) . . . . . . . . 21

N OT E

Refer to the Operating Instructions attached to the optional Timer Remote Controller 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.

Part Name Figure

Full-scale installation diagram

Q’ty

1 Card board

Remarks

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

Table 1-1 (4-Way Cassette)

Part Name Figure

Washer

Screw

Insulating tape

Flare insulator

Q’ty

1 For liquid tube

1 For gas tube

Remarks

For suspension bolts

For full-scale installation diagram

For gas and liquid tube flare nuts

Part Name Figure

Wire mounting bracket

Wire cover

Clamper

Screw

Part Name

Operating Instructions

Installation Instructions

Warranty card

●

Use 3/8” (M10) for suspension bolts.

●

Field supply for suspension bolts and nuts.

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

Figure

Q’ty

For wire mounting

bracket and wire cover

Q’ty

Remarks

Drain hose

Hose band

Drain socket

Packing

Drain insulator

For securing drain

hose

1 For drain hose joint

Check local electrical codes and regulations before

obtaining wire. limitations.

Also, check any speciﬁed instructions or

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

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.

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

● if the indoor unit is installed on the ceiling where the temperature or humidity inside is high (over 86°F(30°C)/RH: 70%), add insulating material to the surface of the unit to avoid dew condensation.

● keep the ﬁre alarm and the air outlet at least 5 ft. (1.5 m) away from the unit.

3.3ft.(1 m)

3.3ft.

(1 m)

Model

Floor-to-ceiling height

Minimum Maximum

S-24MU2U6 5.9ft. (1.8m) 11.8ft. (3.6m)

min. 3.3 ft. (1 m)

Wall

indoor unit

Ceiling

min. 10 ft.

3.3ft.(1 m)

(3 m)

3.3ft. (1 m)

indoor unit

(1 m)

min. 3.3 ft.

S-36MU2U6 5.9ft. (1.8m) 14.8ft. (4.5m)

Obstacles

N OT E

If the ﬂoor-to-ceiling height exceeds 9.8ft. (3m), the wind speed distribution becomes poor.

When changing the settings, refer to “7-3. Others” under the section “7. HOW TO INSTALL THE CEILING PANEL”.

Fig. 2-1

3. HOW TO INSTALL THE INDOOR UNIT

4-Way Cassette Type (Type U2)

■

3-1. Preparation for Suspending

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

3-2. Suspending the Indoor Unit

(1) Fix the suspension bolts securely in the ceiling using the

method shown in the diagrams (Figs. 3-1 and 3-2), by attaching them to the ceiling support structure, or by any other method that ensures that the unit will be securely and safely suspended.

(2) Follow Fig. 3-2 and Table 3-1 to make the holes in the

ceiling.

Table 3-1

Type A B C D

inch 30-15/16 29-21/64 33-55/64 to 35-53/64 33-55/64 to 35-53/64

mm 786 745 860 to 910 860 to 910

inch 30-15/16 29-21/64 33-55/64 to 35-53/64 33-55/64 to 35-53/64

mm 786 745 860 to 910 860 to 910

Note: For DC Fan Motor Tap Setting procedure for

4-Way Cassette, see page 24.

Hole-in-anchor Hole-in-plug

Concrete

Suspension bolt (M10 or 3/8") (field supply)

Insert

Fig. 3-1

Indoor Unit

View from top

B (suspension bolt pitch)

D (ceiling opening dimension)

A (suspension bolt pitch)

C (ceiling opening dimension)

Drain outlet (other side)

Suspension lug

P N

Refrigerant tubing joint (liquid side)

Refrigerant tubing joint (gas side)

Power supply wiring port

Inter-unit control wiring port

Table 3-2

Type E F G H I J K L M N O P Q

inch

1-1/2 4-49/64 6-47/64 10-5/64 1-5/16 5-1/8 7-3/32 10-25/32 1-9/32 10-5/8 1-31/32 12-3/4 33-5/64

38 121 171 256 33.5 130 180 274 32.5 270 50 323.8 840

1-1/2 4-49/64 6-47/64 12-9/16 1-5/16 5-1/8 7-3/32 10-25/32 1-9/32 10-5/8 1-31/32 12-3/4 33-5/64

38 121 171 319 33.5 130 180 274 32.5 270 50 323.8 840

Fig. 3-2

Fig. 3-3

3-3. Placing the Unit Inside the Ceiling

This unit is equipped with the drain pump. Check a tape measure or carpenter’s level. Before installing the ceiling panel, complete the work of drain pipe and refrigerant pipe installation.

(1) When placing the unit inside the ceiling, determine the

pitch of the suspension bolts using the supplied full-scale installation diagram. (Fig. 3-4) Tubing and wiring must be laid inside the ceiling when suspending the unit. If the ceiling is already constructed, lay the tubing and wiring into position for connection to the unit before placing the unit inside the ceiling.

(2) The length of suspension bolts must be appropriate for a

distance between the bottom of the bolt and the bottom of the unit of more than 45/64” (18 mm) as shown in Fig. 3-4.

(3) Thread the 3 hexagonal nuts and 2 washers (field supply)

onto each of the 4 suspension bolts as shown in Fig. 3-5.

Use 1 nut and 1 washer for the upper side, and 2 nuts and 1

washer for the lower side, so that the unit will not fall off the suspension lugs.

(4) Adjust so that the distance between the unit and the ceiling

bottom is 15/32” (12 mm) ~ 43/64” (17 mm). Tighten the nuts on the upper side and lower side of the suspension lug.

(5) Remove the protective polyethylene used to protect the fan

parts during transport.

(6) Check with a tape measure or carpenter’s level.

45/64”

(18 mm)

Over

Screw for attaching paper (4 points)

45/64”

Over

(18 mm)

Ceiling

Air conditioner

Full-scale installation diagram

Open the ceiling as large as this paper outline

Air conditioner

Ceiling

15/32” (12 mm) ~

43/64” (17 mm)

Suspension bolt

Nuts and washers (use for upper and lower)

Double nut

15/32” (12 mm) ~ 43/64” (17 mm)

Suspension lug

Notch

3-4. How to Process Tubing

Refer to the section “5. HOW TO PROCESS TUBING”.

Full-scale installation diagram

Fig. 3-4

Fig. 3-5

3-5. Installing the Drain Pipe

3-5-1. Before Performing the Installation Drain Piping

(1) Limitations of Raising the Drain Pipe Connection

CAUTION

●

The drain pipe can be raised to a maximum height of

2.79 ft. (850 mm) from the bottom surface of the ceiling. Do not attempt to raise it higher than 2.79 ft. (850 mm). Doing so will result in water leakage. (Fig. 3-6)

(2) Limitations of Drain Pipe Connection

CAUTION

●

Do not install the drain pipe with an upward gradient from the drain port connection. This will cause the drain water to flow backward and leak when the unit is not operating. (Fig. 3-7)

●

Do not install an air bleeder as this may cause water to spray from the drain pipe outlet. (Fig. 3-7)

●

Do not provide U-trap or bell-shaped trap in the middle of the drain pipe. Doing so will cause abnormal sound. (Fig. 3-7)

●

Make sure the drain pipe has a downward gradient (1/100 or more; downward from drain port connection). (Fig. 3-8)

(3) Limitations of Drain Hose Connection

CAUTION

1 ft. (300 mm) or less

(as short as possible)

Indoor unit

Ceiling surface

* Length of supplied drain pipe = 9-27/32” (250 mm)

Air bleeder prohibited

Trap prohibited

Separation of support bracket = 4.92 ft. (1.5 m) ~ 6.56 ft. (2 m)

Indoor unit

Downward gradient = 1/100 or more

A : 2.79 ft. (850 mm) or lower B : 2.2 ft. (670 mm) or lower

Upward gradient prohibited

Indoor unit

Fig. 3-6

Fig. 3-7

Fig. 3-8

●

Do not bend the supplied drain hose 90° or more. Bend it less than 45°. (Fig. 3-9)

●

Do not make a trap in the middle of the supplied drain hose. Doing so will cause abnormal sound. (Fig. 3-10)

Bend angle 90° prohibited

Bend angle less than 45°

Fig. 3-9

Trap prohibited

Fig. 3-10

3-5-2. Installing the Drain Hose

CAUTION

●

Do not apply force to the drain port when connecting the drain hose. Install and fix it near the indoor unit as close as possible.

●

Do not use adhesive when connecting the drain port pipe and the drain hose.

(1) How to Install the Drain Hose

1) First insert the supplied hose band into the drain port pipe. Then make sure the head of the screw is facing toward a technical engineer when placing the screw of the hose band at an upward angle.

2) Insert the soft PVC socket of the supplied drain hose to the drain port pipe. Do not use adhesive when connecting the drain hose to the drain port pipe. Insert it until the tip of the drain hose contacts the circular projection rib of the drain port pipe.

3) Move the hose band so that the center position of the hose band can be placed approx. 1-3/16” (30 mm) away from the external plate of the indoor unit. (Fig. 3-11)

4) Screw the drain hose tightly facing the screw of the hose band upward. (Torque: 22 - 30 lbf·inch (2.5

N·m - 3.4 N·m)) (If the screw is tightened beneath the drain hose, the troubles will be generated.) Pay attention not to make hose band overlap the circular projection rib and the sealed circulation projection of the drain port hose.

5) Move the drain socket showing in the direction of the arrow toward the drain hose and connect with the adhesive (approx. 0.07 oz (2g)).

6) Then connect the hard PVC pipe (field supply) on the opposite side of the drain socket. Apply the adhesive (approx. 0.07 oz (2g)) between the two parts. After connection, remove sticky adhesive left over the surface.

Drain port

(Drainage check section on drain port, transparent)

Do not use adhesive here.

* Drain port may possibly be damaged if

PVC adhesive is used.

Do not make hose band overlap the circular projection rib and the sealed circulation projection of the drain port hose. (Torque: 22 - 30 lbf·inch (2.5 N·m - 3.4 N·m))

Circular projection rib

Indoor unit

Hose band (supplied)

Soft side

Drain hose (supplied)

Sealed circulation projection rib

Push until they hit without space.

Approx. 13/64” (5mm) Approx. 1-3/16” (30mm)

Move the drain socket showing in the direction of the arrow toward the drain hose and connect with the adhesive

Then connect the hard PVC pipe (field supply) on the opposite side of the drain socket. Apply the adhesive After connection, remove sticky adhesive left over the surface.

Packing (supplied)

Hard side

Adhere with PVC adhesive.

(approx. 0.07 oz (2g))

25/32” (20 mm) or more

Drain insulator (supplied)

Drain socket (supplied)

Hard PVC pipe (1/2”)

(field supply)

(approx. 0.07 oz (2g))

between the two parts.

Drain insulator (field supply)

* After checking the drainage, wrap the supplied packing and drain hose insulator around the hose.

Fig. 3-11

3-5-3. Checking the Drainage Be careful because the fan will start when you short the pin on the indoor control board.

After wiring (refer to “4. ELECTRICAL WIRING”.) and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled water. (1) Connect power to the power terminal board (L1, L2 terminals) inside the electrical component box. (2) Slowly pour about 0.3 gal (1,200 cc) of water into the drain pan to check drainage. (Fig. 3-12) (3) Short the check pin (CHK) on the indoor control board and operate the drain pump. Check the water flow through the transparent

drain pipe and see if there is any leakage. (4) When the check of drainage is complete, open the check pin (CHK) and remount the tube cover. (5) Confirm the “Checkpoint” under the section “8. PRECAUTIONS ON TEST RUN” after installation of indoor and outdoor units,

panels and electrical wiring.

Drainage check

Over 3-15/16” (100 mm)

CHK

Plastic container for water intake

Drain pan outlet

Water (Approx. 0.3gal (1,200 cc))

Fig. 3-12

CAUTION

Indoor Unit control PC board

Be careful because the fan will start when you short the pin on the indoor control board.

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