Technibel CAFP 164 R, SPAFP 124 R, MAFP 165 R, SPAFP 164 R, DSAFP 164 R Installation Instructions Manual

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CAFP

MAFP

SPAFP

DSAFP

GRFP

85464359728000 2005

– PACKAGE Air Conditioner –

INSTALLATION INSTRUCTIONS

■ R410A Models Indoor Units

Outdoor Units

Indoor Unit Type 12 16 18 25 36 48

CAFP* 4-Way Air Discharge

Semi-Concealed

CAFP 124 R CAFP 164 R CAFP 184 R CAFP 254 R CAFP 364 R CAFP 484 R

MAFP Wall-Mounted MAFP 125 R MAFP 165 R MAFP 185 R MAFP 255 R

SPAFP Ceiling-Mounted SPAFP 124 R SPAFP 164 R SPAFP 184 R SPAFP 255 R SPAFP 365 R SPAFP 485 R

DSAFP Concealed-Duct DSAFP 124 R DSAFP 164 R DSAFP 184 R DSAFP 255 R DSAFP 365 R DSAFP 485 R

Refrigerant R410A is used in the outdoor units.

GRFP 255 R, GRFP 365 R, GRFP 485 R

GRFP Outdoor Units

GRFP 255 L, GRFP 365 L, GRFP 485 L

Optional Controllers

Remote Controller K70D036Z

Wireless Remote Controller (For CAFP type) K70D037Z

Wireless Remote Controller (For SPAFP type) K70D040Z

Wireless Remote Controller+rceiver (for all types) K70D039Z

K Wireless Remote Controller (For MAFP type) K70D041Z

Simplified Remote Controller K70D042Z

Remote Sensor K70D050Z

System Controller K70D043Z

Schedule Timer K70D046Z

DC Inverter R410A

04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page a

Indoor Unit Type 12 16 18 25 36 48

CAFP

* 4-Way Air Discharge

* For this type of Indoor unit (CAFP), please see the Installation Instructions accompanying the unit

Page 2

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.

●

Observe all local, state, and national electrical codes.

●

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

This symbol refers to a hazard 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.

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

When Wiring

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 overheating at connection points and a possible fire hazard.

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…

…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.

…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.

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.

Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion the refrigerant tubing for your particular model is specified as either “narrow” or “wide” than as “liquid” or “gas.”

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.

• 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.

NOTE

WARNING

CAUTION

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2. The standards for minimum room volume are as follows.

(1) No partition (shaded portion)

(2) When there is an effective opening with the adja-

cent room for ventilation of leaking refrigerant gas (opening without a door, or an opening 0.15% or larger than the respective floor spaces at the top or bottom of the door).

(3) If an indoor unit is installed in each partitioned

room and the refrigerant tubing is interconnected, the smallest room of course becomes the object. But when mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded, the volume of the next smallest room becomes the object.

3. The minimum indoor floor space compared with the amount of refrigerant is roughly as follows (for room with 2.7 m high ceiling):

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). In a room where the density may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device. The density is as given below.

Total amount of refrigerant (kg)

Min. volume of the indoor unit installed room (m3)

≤ Density limit (kg/m

)

The density limit of refrigerant which is used in multi air conditioners is 0.3 kg/m

(ISO 5149).

1. If there are 2 or more refrigerating systems in a single refrigerating device, the amount of refrigerant should be as charged in each independent device.

For the amount of charge in this example:

The possible amount of leaked refrigerant gas in rooms A, B and C is 10 kg. The possible amount of leaked refrigerant gas in rooms D, E and F is 15 kg.

NOTE

Outdoor unit

Refrigerant tubing

Indoor unit

e.g., charged amount (10 kg)

Outdoor unit

Indoor unit

Room A Room B Room C Room D Room E Room F

e.g., charged amount (15 kg)

Refrigerant tubing

Outdoor unit

Very small room

Indoor unit

Small room

Medium room

Large room

Mechanical ventilation device – Gas leak detector

10 20 30

Total amount of refrigerant

Min. indoor floor space

Range below the density limit of 0.3 kg/m

(countermeasures not needed)

Range above the density limit of 0.3 kg/m

(countermeasures needed)

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1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410A

refrigerant deterioration and compressor defects. Due to the features of the refrigerant and refrigerating machine oil, the prevention of water and other impurities becomes more important than ever.

2. Be sure to recharge the refrigerant only in liquid form.

2-1. Since R410A is a non-azeotrope, recharging the refrigerant in gas form can lower performance and cause

defects of the unit.

2-2. Since refrigerant composition changes and performance decreases when gas leaks, collect the remaining

refrigerant and recharge the required total amount of new refrigerant after fixing the leak.

3. Different tools required

3-1. Tool specifications have been changed due to the characteristics of R410A.

Some tools for R22- and R407C-type refrigerant systems cannot be used.

Unit: mm

Material 0

Copper tube

Outer diameter 6.35 9.52 12.7 15.88

Wall thickness 0.8 0.8 0.8 1.0

Item New R407C tools Remarks

tool compatible

with R410A

Manifold gauge Yes No Types of refrigerant, refrigerating machine

oil, and pressure gauge are different.

Charge hose Yes No To resist higher pressure, material must be changed.

Vacuum pump Yes Yes Use a conventional vacuum pump if it is equipped

with a check valve. If it has no check valve, purchase and attach a vacuum pump adapter.

Leak detector Yes No Leak detectors for CFC and HCFC that

react to chlorine do not function because R410A contains no chlorine. Leak detectors for HFC134a can be used for R410A.

Flaring oil Yes No For systems that use R22, apply mineral oil (Suniso oil)

to the flare nuts on the tubing to prevent refrigerant leakage. For machines that use R407C or R410A, apply synthetic oil (ether oil) to the flare nuts.

Precautions for Installation Using New Refrigerant

1. Care regarding tubing

1-1. Process tubing

● Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seam-

less Pipes and Tubes.”

● Tubing size: Be sure to use the sizes indicated in the table below.

● Use a tube cutter when cutting the tubing, and be sure to remove any flash. This also applies to distribution

joints (optional).

● When bending tubing

15.88 or smaller, use a bending radius that is 4 times the outer diameter of the tubing or larger.

* Using tools for R22 and R407C and new tools for R410A together can cause defects.

Manifold gauge

Vacuum pump

Outlet Inlet

CAUTION

Use sufficient care in handling the tubing. Seal the tubing ends with caps or tape to prevent dirt, moisture, or other foreign substances from entering. These contaminants can result in system malfunction.

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Valve

Liquid

3-2. Use R410A exclusive cylinder only.

Single-outlet valve

(with siphon tube) Liquid refrigerant should be recharged with the cylinder standing on end as shown.

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

Please Read Before Starting Check of Density Limit Precautions for Installation Using New Refrigerant

1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

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 1-5. Tubing Size 1-6. Optional Distribution Joint Kits 1-7. Installing Distribution Joint Kit (for Twin &

Double-Twin) (K70A056Z)

1-8. Installing Distribution Joint Kit (for Triple)

(K70A061Z)

2. SELECTING THE INSTALLATION SITE . . . . .17

2-1. Indoor Unit 2-2. Outdoor Unit 2-3. Air Discharge Chamber for Top Discharge 2-4. Installing the Unit in Heavy Snow Areas 2-5. Precautions for Installation in Heavy Snow

Areas

2-6. Dimensions of Snow / Wind-proof Ducting

and Refrigerant Tubing Space of Installation

3. HOW TO INSTALL THE INDOOR UNIT . . . . .20

■ 4-Way Air Discharge Semi-Concealed Type

(CAFP Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3-1. Preparation for Suspending 3-2. Suspending the Indoor Unit 3-3. Placing the Unit Inside the Ceiling 3-4. Installing the Drain Piping 3-5. Checking the Drainage

■ Wall-Mounted Type (MAFP Type) . . . . . . . . . . .24

3-6. Removing the Rear Panel from the Unit 3-7. Selecting and Making a Hole 3-8. Installing the Rear Panel onto the Wall 3-9. Removing the Grille to Install the Indoor Unit 3-10. Preparing the Tubing 3-11. Shaping the Tubing 3-12. Installing the Drain Hose

■ Ceiling-Mounted Type (SPAFP Type) . . . . . . . .28

3-13. Required Minimum Space for Installation and

Service 3-14. Suspending the Indoor Unit 3-15. Duct for Fresh Air 3-16. Shaping the Tubing 3-17. Installing the Drain Piping

■ Concealed-Duct Type (DSAFP Type) . . . . . . .35

3-18. Required Minimum Space for Installation and

Service

3-19. Suspending the Indoor Unit 3-20. Installing the Drain Piping 3-21. Checking the Drainage 3-22. Increasing the Fan Speed

4. HOW TO INSTALL THE OUTDOOR UNIT . . .40

4-1. Installing the Outdoor Unit 4-2. Drainage Work 4-3. Routing the Tubing and Wiring

5. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . .41

5-1. General Precautions on Wiring 5-2. Recommended Wire Length and Wire Diam-

eter for Power Supply System

5-3. Wiring System Diagrams

6. HOW TO INSTALL THE REMOTE CONTROLLER

(OPTIONAL PART) . . . . . . . . . . . . . . . . . . . . . .45

6-1. When Using a Wall Box for Flush Mounting 6-2. Basic Wiring Diagram (Twin, Triple, Double-

Twin) 6-3. Wiring System Diagram for Group Control 6-4. Switching the Room Temperature Sensors 6-5. Connecting to a Ventilation Fan 6-6. Wiring the Remote Controller 6-7. Trouble Diagnostics

7. HOW TO PROCESS TUBING . . . . . . . . . . . . .53

7-1. Connecting the Refrigerant Tubing 7-2. Connecting Tubing Between Indoor and

Outdoor Units 7-3. Insulating the Refrigerant Tubing 7-4. Taping the Tubes 7-5. Finishing the Installation

8. LEAK TEST, EVACUATION AND ADDITIONAL

REFRIGERANT CHARGE . . . . . . . . . . . . . . . .57

■ Air Purging with a Vacuum Pump (for Test Run)

Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

8-1. Leak Test 8-2. Evacuation 8-3. Charging Additional Refrigerant 8-4. Finishing the Job

9. HOW TO INSTALL THE CEILING PANEL . . . .60

■ 4-Way Air Discharge Semi-Concealed Type

(CAFP Type) . . . . . . . . . . . . . . . . . . . . . . . . . . 60

9-1. Before Installing the Ceiling Panel 9-2. Installing the Ceiling Panel 9-3. Wiring the Ceiling Panel 9-4. How to Attach the Corner & Air Intake Grille 9-5. Checking After Installation 9-6.

When Removing the Ceiling Panel for Servicing

9-7. Adjusting the Auto Flap

CONTENTS

Page

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10.TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

10-1. Preparing for Test Run

■ CAFP, SPAFP, DSAFP Type . . . . . . . . . . . . . . 65

10-2. Caution 10-3. Test Run Procedure 10-4. Items to Check Before the Test Run 10-5. Test Run Using the Remote Controller 10-6. Precautions 10-7. Table of Self-Diagnostic Functions and

Corrections (CAFP, SPAFP, DSAFP, MAFP Type)

10-8. System Control

■ MAFP Type . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

10-9. Caution 10-10. Test Run Procedure 10-11. Items to Check Before the Test Run 10-12. Preparation for Test Run 10-13. Test Run 10-14. Precautions 10-15. Table of Self-Diagnostic Functions and

Corrections

10-16. System Control

■ CAFP, SPAFP, DSAFP Type (for Link Wiring) . 81 10-17. Caution 10-18. Test Run Procedure 10-19. Items to Check Before the Test Run 10-20. Test Run Using the Remote Controller 10-21. Table of Self-Diagnostic Functions and

Corrections CAFP, SPAFP, DSAFP, MAFP Type

10-22. Automatic Address Setting

■ MAFP Type (for Link Wiring) . . . . . . . . . . . . . . 90

10-23. Caution 10-24. Test Run Procedure 10-25. Table of Self-Diagnostic Functions and

Corrections CAFP, SPAFP, DSAFP, MAFP

Type 10-26. Automatic Address Setting 10-27. Caution for Pump Down

11. HOW TO INSTALL THE WIRELESS REMOTE

CONTROLLER RECEIVER . . . . . . . . . . . . . . 99

■ K70D037Z for 4-Way Cassette (CAFP Type) . . 99

11-1. Installing the Receiver Unit 11-2. Accessories 11-3. Wiring the Receiver Unit 11-4. Precautions on Simultaneous Installation of

Wired Remote Controller and Wireless Remote Controller

11-5. How to Use the Test Run Setting

■ K70D040Z for Ceiling Mounted (SPAFP Type) 102

11-6. Installing the Receiver Unit

11-7. Accessories Supplied with Unit 11-8. Wiring the Receiver Unit 11-9. Precautions on Simultaneous Installation of

Wired Remote Controller and Wireless Remote Controller

11-10. How to Use the Test Run Setting

■ K70D039Z for DSAFP Type . . . . . . . . . . . . . . 105

11-11. Accessories Supplied with Separate

Receiver Unit

11-12. Important Information for Installation of

1 Separate Receiver Unit 11-13. How to Install the Separate Receiver Unit 11-14. W iring the Separate Receiver Unit 11-15. Important Information for Installation of

2 Separate Receiver Units 11-16. Test Run Setting

Page

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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. Standard screwdriver

2. Phillips head screwdriver

3. Knife or wire stripper

4. Tape measure

5. Carpenter’s level

6. Sabre saw or key hole 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

See Tables 1-1 to 1-4.

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 8 mm.

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

5. Electrical Wiring for details.

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

CAUTION

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

Table Type

1-1 4-Way Air Discharge Semi-Concealed

1-2 Wall-Mounted

1-3 Ceiling-Mounted

1-4 Concealed-Duct

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Table 1-1 (4-Way Air Discharge Semi-Concealed)

Part Name Figure

Q’ty

Remarks

Full-scale installation diagram

Flare insulator

Insulating tape

Hose band

Packing

Drain insulator

Drain hose

For wide and narrow tubes

For securing drain hose

For drain joint

For dr

ain joint

(White)

Washer

For suspension bolts

Screw

Printed on container box

For wide and narrow tube flare nuts

For full-scale installation diagram

For securing drain hose

Table 1-2 (Wall-Mounted)

Part Name

Figure

Q’ty

Remarks

Plastic cover

Tapping screw

For improved tubing appearance

For fixing the rear panel

Truss-head Phillips 4 × 16 mm

Insulator

For insulating flare nut (255 type only)

Table 1-3 (Ceiling-Mounted)

Part Name Figure

Q’ty

Remarks

Special washer

Drain insulator

Flare insulator

2 sets

Insulating tape

Vinyl clamp

Eyelet

Full-scale installation

diagram

Drain hose

For temporarily suspending indoor unit from ceiling

For drain hose joint

For wide and narrow tube joints

For wide and narrow flare joints

For flare and drain insulator

For pow

er supply inlet

T10

White (heat-resisting)

For drain hose connection

Hose band

L140

For main unit + PVC pipe joints

Printed on container box

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Table 1-4 (Concealed-Duct)

Part Name Figure

Q’ty

Remarks

Flare insulator

Insulating tape

Drain insulator

Hose band

Packing

Drain hose

Sealing putty

Vinyl clamp

Booster cable*

For suspending indoor unit from ceiling

For wide and narrow tubes

For wide and narrow tubes flare nuts

For drain hose joint

For securing drain hose

For drain joint

For sealing recessed por tion of power supply

or flare and drain insulators

* Booster cable is housed inside the electrical component box.

Washer

Connector for changeover to HT tap.

● Use 3/8" for suspension bolts.

● Field supply for suspending bolts and nuts.

1-5. Tubing Size

(A) Single type

● Refrigerant tubing between the indoor and outdoor units

shall be kept as short as possible.

● The length of the refrigerant tubes between the indoor

and outdoor units are limited by the elevation difference between the 2 units. During tubing work, try to make both the tubing length (L) and the difference in elevation (H1) as short as possible. Refer to Table 1-5.

Table 1-5

Single

Main tubing L

Outdoor unit type 25, 36 types 48 types

Maximum allowable tubing length 50 m 50 m

Charge-less tubing length (actual length) 3 – 30 m 5 – 30 m

Additional charge per 1 m 40g

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(B) Simultaneous operation multi (Twin, Triple, Double-Twin)

Because the indoor units run simultaneously, install them within the same room.

NOTE

Single

Twin

Triple

Double-Twin

Actual length (m)

L + 1 L + 2

L + 3

L + 1, L + 2

L + L1 + 1, L + L1 + 2

L2 + 3, L2 + 4

Max.: L2 + 4 Min.: L1 + 1 (L2 + 4) – (L1+ 1)

L1 + 1, L1 + 2

1, 2

1 > 2

1 > 2 > 3

1 – 2

1 – 2 1 – 3 2 – 3

L + L2 + 3, L + L2 + 4

1, 2, 3

≤ 50

≤ 15

≤ 10

≤ 30 ≤ 15 ≤ 0.5

Item

Contents

Allowable tubing lengths

Maximum allowable tubing length

One-way length of tubing from outdoor unit to the most distant indoor unit

Maximum distribution tubing length

Maximum length following the first branch point (No. 1 distribution)

Maximum branch tubing length

Difference between the maximum length and minimum length in tubing following the first branch point

Maximum difference between lengths of No. 1 distribution tubing (double twin)

Maximum difference between lengths of No. 2 distribution tubing (double twin)

Maximum allowable height difference

Maximum indoor-outdoor height difference

If outdoor unit is higher

If outdoor unit is lower

Maximum height difference between indoor units

Symbol

L2 > L1

2 > 1 4 > 3 2 – 1 4 – 3

L2 – L1

H2, H3, H4 H2, H3, H4, H5, H6, H7

–

––

–

––

H1 H1

Triple

Twin

Double-Twin

Main tubing L

Distribution joint No. 1

Distribution joint (purchase separately)

Distribution joint

Distribution tubing

* For connection tubing sizes, refer to table above.

H4H3

Distribution joint No. 2

A = K70A056Z B = K70A061Z

● For refrigerant tube branches, use the optional distribution joints.

● For cautions on the use of the optional distribution joints, be sure to refer to the provided instruction sheet. Also,

be careful to install them in the correct direction (orientation).

NOTE

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Limit of elevation difference between the 2 units

No additional charge of compressor oil is necessary. *

If total tubing length becomes 30 to 50 m, charge additional refrigerant by 40 g/m.

Models

GRFP255L GRFP255R

GRFP365L GRFP365R

GRFP485L GRFP485R

Tubing Data

Tubing size Narrow tube mm (in.) 9.52 (3/8) 9.52 (3/8) 9.52 (3/8) outer diameter Wide tube mm (in.)

15.88 (5/8) 15.88 (5/8) 15.88 (5/8)

Limit of tubing length (m)

50 50 50

Outdoor unit is placed

30 30 30

higher (m) Outdoor unit is placed

15 15 15

lower (m)

Max. allowable tubing length at shipment (m)

3 – 30 3 – 30 5 – 30

Required additional refrigerant *

(g/m)

a) 40 b) 40 b) 40

Refrigerant charged at shipment (kg) 1.2 1.2 1.2

Table 1-6 Tubing Data for Models (Single, Twin, Triple, Double-Twin)

25 – 48

12 – 18

φ15.88

φ9.52

φ9.52 φ6.35

φ12.7

( 1, 2, 3, 4)

20 g

40 g

Wide tube

Narrow tube

Main tubing (L)

Double-Twin distribution tube (L1, L2)

Total type capacity of indoor units connected after the branch

Indoor unit connection tube

Type capacity of indoor units

Amount of additional charge per 1 m

Table 1-7 List of Connection Tube Sizes

Charge with an amount of additional refrigerant calculated using the formula below, based on the values in Table 1-7 and the size and length of the liquid (narrow) tubing.

Amount of additional refrigerant charge (g)

Do not remove refrigerant from the system, even if the result of the calculation is negative. (Use with the current refrigerant charge.)

(a) Actual length (m) of main tubing (φ9.52) Refrigerant charge per 1 m of actual length = 40 g/m (25, 36 and 48) (b) Total length of distribution tubing (φ9.52) Refrigerant charge per 1 m of actual length = 40 g/m (c) Total length of distribution tubing (φ6.35) Refrigerant charge per 1 m of actual length = 20 g/m

Example

● Sample tubing lengths

L = 35 m 1 = 5 m L1 = 10 m 2 = 5 m L2 = 5 m 3 = 5 m

4 = 10 m

● Find the liquid (narrow) tube size from Table 1-7.

L: φ9.52 (48 type) L1 : φ9.52 (Total type capacity of indoor units 25) L2 : φ9.52 (Total type capacity of indoor units 25)

1 – 4 : φ6.35

● The amount of additional on-site refrigerant charge is found by subtracting the outdoor unit

charge-less refrigerant amount from the total charge amount for all tube sizes.

φ9.52 → L : 35 m × 40 g / m = 1400 φ9.52 → L1 + L2 : (10 + 5) m × 40 g / m = 600 φ6.35 → 1 – 4 : (5 + 5 + 5 + 10) m × 20 g / m = 500

Outdoor unit charge-less refrigerant amount –1200

Total +1300

● The amount of additional on-site refrigerant charge is 1,300 g.

Outdoor unit

Indoor unit (12 type × 4)

Additional refrigerant amount (g) = Additional refrigerant for main tubing (g) + Additional refrigerant for distribution tubing (g)

– Outdoor unit charge-less refrigerant amount (g)

= 40X (a) + 40X (b) + 20X (c) – 1200 (25, 36 and 48)

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Page 13

CAUTION

WARNING

1. This unit requires no additional refrigerant charge up to tubing length 30 m. In case of more than 30 m, additional refrigerant charge is required. Refer to Tables 1-6 and 1-7.

2. In case of multi type installation, indoor units should be installed within the same room. If multi type indoor units are installed in different rooms, temperature control may develop problems because thermostat operation must follow the thermostat condition of 1 indoor unit only (the main unit).

Always check the gas density for the room in which the unit is installed.

Pay special attention to any location, such as a basement or recessed area, etc. where leaked refrigerant can collect, since refrigerant gas is heavier than air.

13.5

27.0

40.5

54.0

67.5

81.0

94.5

108

121.5

135

Total amount of refrigerant

Min. indoor floor area

(when the ceiling is 2.7 m high)

Min. indoor volume

20 30 40 kg

Range below the density limit of

0.3 kg/m

(Countermeasures not needed)

Range above the density limit of

0.3 kg/m

(Countermeasures needed)

■ Check of limit density

When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally escapes, its density does not exceed the limit level. If the density might exceed the limit level, it is necessary to set up an opening between it and the adjacent room, or to install mechanical ventilation which is interlocked with the leak detector.

(Total refrigerant charged amount : kg)

(Min indoor volume where the indoor unit is installed : m3) ≤ Limit density 0.3 (kg/m3)

The limit density of refrigerant which is used in this unit is 0.3 kg/m

(ISO 5149).

The shipped outdoor unit comes charged with the amount of refrigerant fixed for each type; so add it to the amount that is charged at the field. (For the refrigerant charge amount at shipment, refer to the unit’s nameplate.)

Minimum indoor volume & floor area relative to the amount of refrigerant is roughly as given in the following table.

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Page 14

1-6. Optional Distribution Joint Kits

● K70A056Z : Cooling capacity after distribution is 16.0 kW (54,600 BTU/h) or less

● K70A061Z : Cooling capacity after distribution is 28.0 kW (95,500 BTU/h) or less

Table 1-8 Distribution Branch Size ( 1, 2, 3, 4)

Unit: mm (in.)

Indoor Unit

12 type

16 type

18 type 25 type 36 type 48 type

Wide tube 12.7 (1/2) 15.88 (5/8)

Narrow tube 6.53 (1/4) 9.52 (3/8)

210

145

103

185

135

Distribution joint

Insulation material

Distribution joint

EEE

for wide tube for narrow tube

K70A056Z

Table 1-9 Dimensions of connections (inner diameter of tubing)

Unit: mm

Position A B C D E F G

Size ø 28.58 ø 25.4 ø 19.05 ø 15.88 ø 12.7 ø 9.52 ø 6.35

100 35

(295)

φ9.52φ9.52φ9.52

BCUP-3

100 80 80

300

100

φ12.7

φ25.4

φ15.88

for narrow tube

for wide tube

(3 locations)

Dowel pin position

Narrow distribution joint

Wide distribution joint

Narrow-tube side tube connector

1112

Wide-tube side tube connector

φ9.52 φ12.7

φ12.7

φ15.88

φ19.05

φ25.4

φ28.58

φ9.52

φ6.35

Thermal insulation for narrow distribution joints

Thermal insulation for wide distribution joints

K70A061Z (for simultaneous Triple)

04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 14

Page 15

Dowel pin

Cutting location

Cut as far away as possible (to ensure proper insertion clearance for the connecting tube)

Cutting is only necessary for the welding dimensions at positions B, D, and F.

Vertical installation (directed upward or downward)

Example showing tubing directed upward

Horizontal line

Indoor unit side

Outdoor unit side

Install at a positive angle. (15 – 30°)

Horizontal installation

1-7. Installing Distribution Joint Kit (for Twin &

Double-Twin) (K70A056Z)

● Use a tube cutter and cut at the size position that

corresponds to the field-supply tube size selected based on the total indoor unit capacity. (If the size is the same as the tube end size, cutting is not necessary.)

● If the reducer that was supplied in the package is

used, perform brazing on-site.

Note: Do not cut in such a way that applies exces-

sive force and causes deformation of the tube. (This will prevent insertion of the connecting tube.) For size selection, refer to “Information for the Person in Charge of Installation” and other materials that were supplied with the outdoor unit.

● Cut at a position that is as far away as possible

from the dowel pin.

● After cutting the tube, be sure to remove any burrs

and to finish the end surface correctly. (If there is excessive crushing or indentation of the tube, use a tube expander to expand it.)

● Check that there is no dirt or other foreign sub-

stance inside the distribution tubing.

● Install the distribution tubing so that it is either hori-

zontal or vertical.

● Use the supplied thermal insulation to insulate the

distribution tubing. (If other insulation is used, be sure to use insulation that can withstand temperatures of at least 120°C.)

● For details, refer to “Information for the Person in

Charge of Installation.”

Nitrogen gas replacement required for tube brazing

If nitrogen replacement is not done when brazing is performed on the indoor unit and outdoor unit refrigerant tubing, oxide scale will occur. This scale will clog the solenoid valves, strainers, and other parts, leading to malfunction.

Therefore be sure to replace the air in the tubing with nitrogen when performing brazing in order to prevent problems from oxide scale.

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Page 16

Refrigerant tubing (field supply)

Seal securely with vinyl tape (4 locations)

Distribution joint insulation materials (supplied)

Use the supplied insulation materials. The supplied insulation materials include only tape for temporarily fastening them in place. Use insulation material or other material to seal the joining lines so that there are no gaps. Use vinyl tape or similar means to seal and fasten the insulation materials in place.

•

Tubing insulation material must be able to withstand temperatures of at least 120°C.

Tubing insulation material (field supply; thickness of more than 10 mm)

Only the distribution joints are horizontal with respect to the ground. The collective tubes are vertical with respect to the ground.

The collective tube and distribution joint are horizontal with respect to the ground.

Collective tube

Distribution joint

1-8. Installing Distribution Joint Kit (for Triple)

(K70A061Z)

● Before installing, check the system combination.

● The 3 indoor units must be installed within the

same room.

● To adjust the tube sizes of the distribution joints,

use the supplied tube connectors.

How to Install Distribution Joints

Use the supplied distribution joints to complete refrigerant tubing work. Install distribution joints so that the tubes are horizontal after the branch point.

Orientation of distribution joints

Only the distribution joints are horizontal with respect to the ground. The collective tubes are vertical with respect to the ground.

The collective tube and distribution joint are horizontal with respect to the ground.

Collective tube

Distribution joint

Inclination

Be sure to install so that the tubes are horizontal after the branch point.

INCORRECT

Length requirement for strainer on main distribution tube side

Attach a straight tube 500 mm or longer to the main tubing side of the distribution joint (for both narrow and wide tubing).

Tubing insulation

Be sure to apply thermal insulation to both the narrow and wide tubing. Depending on the conditions inside the ceiling, condensation may form on the insulation material. If high temperatures and high humidity are expected to occur inside the ceiling, add glass wool (16 – 20 kg/m

, with a thickness of 10 mm or more) to the below insulation materials and apply sufficient thermal insulation.

More than 500 mm

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Page 17

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 “sweating” on the air discharge ports, causing them to spray or drip.

● locations where the remote controller will be splashed

with water or affected by dampness or humidity.

● installing the remote controller behind curtains or fur-

niture.

● locations where high-frequency emissions are gener-

ated.

DO:

● select an appropriate position from which every cor-

ner 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 differ-

ence above or below the outdoor unit and within a total tubing length (L) from the outdoor unit as detailed in Tables 1-5 and 1-6.

● allow room for mounting the remote controller about

1m off the floor, in an area that is not in direct sunlight nor in the flow of cool air from the indoor unit.

Concealed-Duct Type

4-Way Semi-Concealed T

ype

Wall-Mounted Type

min.15 cm

Front View

min. 15 cm

Ceiling-Mounted Type

Side view

min. 25 cm

The rear of the indoor unit can be installed flush against the wall.

min. 50 cm

Air intake

Air discharge

min. 25 cm

Ceiling

Wall

NOTE

Front view

Max. 25 cm

Obstacle

Fig. 2-1

Fig. 2-2

Fig. 2-3

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Page 18

2-2. Outdoor Unit

AVOID:

● heat sources, exhaust fans, etc. (Fig. 2-4)

● damp, humid or uneven locations

DO:

● choose a place as cool as possible.

● choose a place that is well ventilated and outside

air temperature does not exceed maximum 45°C constantly.

● allow enough room around the unit for air intake/

exhaust and possible maintenance. (Fig. 2-5)

● use lag bolts or equal to bolt down unit, reducing

vibration and noise.

Installation space

Distance between obstructions and the unit air inlet and outlet must be as shown below.

Fig. 2-4

Fig. 2-5

Fig. 2-6

Fig. 2-7

Outdoor unit

Heat source

Hot air

Exhaust fan

Air in

Air discharge

Anchor bolts (4 pieces)

Min. 15cm

In case of multiple installations

● provide a solid base (concrete block, 10 × 40 cm

beams or equal), a minimum of 15 cm above ground level to reduce humidity and protect the unit against possible water damage and decreased service life. (Fig. 2-7)

● use lug bolts or equal to bolt down unit, reducing

vibration and noise.

More than 1cm

More than 100cm

More than 1cm

Inlet side C

Inlet side More than 20cm

Outlet side

(field supply)

(ground)

Air direction chamber

(Obstruction above unit)

(Obstruction on inlet side)

CAUTION

● Concerning inlet-side distance “C” (Fig. 2-5)

The minimum for distance “C” is 15 cm if there are no obstructions on the outlet side (wall *1 side) and *2 or *4 is not present. In all other cases, the minimum for distance “C” is 20 cm.

● If the unit is installed with the outlet side facing wall *1, then there must be no obstruc-

tions on 2 of the remaining 3 sides: *2, *3, *4.

● If wall *1 is on the outlet side (Fig. 2-5), or if obstructions are present on all 3 sides *2,

*3, and *4 (Fig. 2-5), then the minimum distance for “A” and “B” is 2 m (Fig. 2-7). Even if there is no wall on the outlet side, a minimum of 100 cm is required.

04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 18

Page 19

Fig. 2-8

Fig. 2-9

Fig. 2-10

2-3. Air Discharge Chamber for Top Discharge

Be sure to install the air discharge chamber in the field when:

● it is difficult to keep a space of min. 50 cm between

the air discharge outlet and the obstacle.

● the air discharge outlet is facing to the sidewalk

and discharged hot air annoys the passers-by. Refer to Fig. 2-8.

2-4. Installing the Unit in Heavy Snow Areas

In locations with strong wind, snow-proof ducting should likewise be fitted and direct exposure to the wind should be avoided as much as possible.

■ Countermeasures against snow and wind

In regions with snow and strong wind, the following problems may occur when the outdoor unit is not provided with a platform and snow-proof ducting:

a) The outdoor fan may not run and damage of the

unit may be caused. b) There may be no air flow. c) The tubing may freeze and burst. d) The condenser pressure may drop because of

strong wind, and the indoor unit may freeze.

2-5. Precautions for Installation in Heavy Snow

Areas

(1) The platform should be higher than the max. snow

depth. (Fig. 2-9)

(2) The 2 anchoring feet of the outdoor unit should be

used for the platform, and the platform should be installed beneath the air intake side of outdoor unit.

(3) The platform foundation must be firm and the unit

must be secured with anchor bolts.

(4) In case of installation on a roof subject to strong

wind, countermeasures must be taken to prevent the unit from being blown over.

Air discharge

In regions with significant snowfall, the outdoor unit should be provided with a platform and snow-proof duct.

Without snowproof ducting (Low platform)

Without snowproof ducting (Hi

h platform)

Air Intake

Platform (foundation)

Higher than the maximum snow depth

Duct

About 1/2 of the unit hei

Air Intake

Duct

Outdoor Unit

Duct

Outdoor Unit

Min. 100

300

Min. 100 300 Unit: mm

Example of Installation

2-6. Dimensions of Snow / Wind-proof Ducting

and Refrigerant Tubing Space for Installation

Fig. 2-11

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Page 20

CAFP

3. HOW TO INSTALL THE INDOOR UNIT

■ 4-Way Air Discharge Semi-Concealed Type (CAFP Type)

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 to the ceiling

using the method shown in the diagrams (Figs. 31 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

Unit: mm

(3) Determine the pitch of the suspension bolts using

the supplied full-scale installation diagram. The diagram and table (Fig. 3-3 and Table 3-2) show the relationship between the positions of the suspension fitting, the unit, and the panel.

Table 3-2

Unit: mm

Fig. 3-1

Fig. 3-2

Fig. 3-3

Hole-in-anchor Hole-in-plug

Concrete Insert

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

Type

788

723

885

12, 16, 18, 25, 36, 48

Length

113

173

210

256

36, 48

12, 16, 18, 25

88319

113

Type

Length

D (ceilin

openin

dimension)

C (ceiling opening dimension)

A (suspension bolt pitch)

B (suspension bolt pitch)

Suspension lug

Refrigerant tubing joint (narrow side)

Refrigerant tubing joint (wide side)

(VP25)

Drain outlet

(other side)

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CAFP

Fig. 3-4

Fig. 3-5

3-3. Placing the Unit Inside the Ceiling

(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 appropri-

ate for a distance between the bottom of the bolt and the bottom of the unit of more than 15 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 12 to 17 mm. Tighten the nuts on the upper side and lower side of the suspension lug.

(5) Remove the protective polyethylene used to pro-

tect the fan parts during transport.

Full-scale installation diagram (printed on top of container box)

Supplied bolt

Over 15 mm

12 – 17 mm

12 – 17 (mm)

Suspension bolt

Suspension lug

Nuts and washers (use for upper and lower)

Notch

Double nut

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Page 22

CAFP

3-4. Installing the Drain Piping

(1) Prepare a standard hard PVC pipe (O.D. 32 mm)

for the drain and use the supplied drain hose and hose band to prevent water leaks. The PVC pipe must be purchased separately. The unit’s transparent drain port allows you to check drainage. (Fig. 3-6)

● Insert the drain pipe until it contacts the socket

as shown in Fig. 3-6, then secure it tightly with the hose band.

● Do not use adhesive when connecting the sup-

plied hose.

Reasons: 1. It may cause water to leak from the

connection. Since the connection is slippery just after the adhesive has been applied, the pipe easily slips off.

2. The pipe cannot be removed when maintenance is needed.

● Do not bend the supplied drain hose 90° or

more. The hose may slip off.

● Align the hose bands with the end of the hose.

Tighten the hose band firmly. Make sure that the bead is not covered by the hose band. (Fig. 3-6)

(2) After checking the drainage, wrap the supplied

packing and drain pipe insulator around the pipe. (Fig. 3-7)

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

NOTE

CAUTION

Tighten the hose clamps so their locking nuts face upward. (Fig. 3-6)

CAUTION

● Do not install an air bleeder

as this may cause water to spray from the drain pipe outlet. (Fig. 3-8)

Fig. 3-6

Fig. 3-7

Fig. 3-8

Bead

Hose band

Supplied drain hose

Connection pipe

(drain port)

Align the hose band with the end of the pipe

(Field supply)

Packing

(supplied)

VP-25

Hard PVC socket

Hard PVC pipe

PVC adhesive

Vinyl clamps

Drain insulator (supplied)

Air bleeder prohibited

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Page 23

CAFP

Fig. 3-9

30 cm or less (as short as possible)

64 cm or less

Fig. 3-10

Upward gradient prohibited

Fig. 3-11

Fig. 3-12

Support pieces

Water (Approx. 1,200 cc)

Over 100 mm

Drain pan outlet

Drainage check

Plastic container for

water intake

CAUTION

● If it is necessary to

increase the height of the drain pipe, the section directly after the connection port can be raised a maximum of 64 cm. Do not raise it any higher than 64 cm, as this could result in water leaks. (Fig. 3-9)

● Do not install the pipe

with an upward gradient from the connection port. This will cause the drain water to flow backward and leak when the unit is not operating. (Fig. 3-10)

● Do not apply force to the

piping on the unit side when connecting the drain pipe. The pipe should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible. (Fig. 3-11)

● Provide insulation for

any pipes that are run indoors.

3-5. Checking the Drainage

After 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 (R, S

terminals) inside the electrical component box.

(2) Slowly pour about 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.

CAUTION

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

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Page 24

MAFP

■ Wall-Mounted Type (MAFP Type)

3-6. Removing the Rear Panel from the Unit

(1) Remove the set screws used to fasten the rear

panel to the indoor unit during transportation.

(2) Press up on the frame at the 2 locations shown by

the arrows in the figure at right, and remove the rear panel.

Tubing can be extended in 4 directions as shown in Fig. 3-14. Select the direction which will provide the shortest run to the outdoor unit.

3-7. Selecting and Making a Hole

(1) Remove the rear panel from the indoor unit and

place it on the wall at the location selected. Fix the rear panel and hook the unit onto it temporarily. Make sure the unit is horizontal using a carpenter’s level or tape measure to measure down from the ceiling.

(2) Determine which notch of the rear panel should be

used. (Fig. 3-15)

(3) Before drilling a hole, check that there are no

studs or pipes behind the determined location. The above precautions are also applicable if tubing goes through the wall in any other location.

(4) Using a sabre saw, key hole saw or hole-cutting

drill attachment, make a hole (dia. 80 mm) in the wall. (Fig. 3-16)

(5) Measure the thickness of the wall from the inside

edge to the outside edge and cut the PVC pipe at a slight angle 6 mm shorter than the thickness of the wall. (Fig. 3-17)

(6) Place the plastic cover over the end of the pipe (for

indoor side only) and insert in the wall. (Fig. 3-18)

The hole should be made at a slight downward gradient to the outside.

NOTE

Fig. 3-13

Fig. 3-14

Fig. 3-15

Fig. 3-16

Fig. 3-17Fig. 3-18

CAUTION

Avoid areas where electrical wiring or conduits are located.

Plastic cover

INSIDE

Wall

Slight angle

PVC pipe

OUTSIDE

Cut at slight angle

PVC pipe (locally purchased)

Indoor side

Outdoor side

Center of left rear tubing hole

Center of right rear tubing hole

Tubing hole diameter

φ80

Left tubing

Right-rear tubing (recommended)

ht tubin

Left-rear tubing

Remove the rear panel

Press

Screws used during transportation

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Page 25

MAFP

Fig. 3-19

3-8. Installing the Rear Panel onto the Wall

Confirm that the wall is strong enough to support the unit.

See either Item a) or b) below depending on the wall type.

a) If the Wall is Wooden

(1) Attach the rear panel to the wall with the 10 screws

provided. (Fig. 3-19) If you are not able to line up the holes in the rear panel with the beam locations marked on the wall, use Rawl plugs or toggle bolts to go through the holes on the panel or drill 5 mm dia. holes in the panel over the stud locations and then mount the rear panel.

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

This is important so that the unit is correctly installed. (Fig. 3-20)

(3) Make sure the panel is flush against the wall. Any

space between the wall and unit will cause noise and vibration.

b) If the Wall is Brick, Concrete or Similar

Drill 4.8 mm dia. holes in the wall. Insert Rawl plugs for appropriate mounting screws. (Fig. 3-21)

3-9. Removing the Grille to Install the Indoor Unit

In principle, with this model wiring can be completed without removing the grille. However, if it is necessary to change the settings on the PCB, follow the procedure below.

Removing the grille

(1) Lift up on both sides of the air-intake grille to open it.

(Fig. 3-22)

(2) Remove the filter. (Fig. 3-22)

(3) Adjust the flap so that it is horizontal. (Fig. 3-23)

(4) Open the installation screw covers below the grille

(3 locations). (Fig. 3-23)

(5) Remove the screws. (Fig. 3-23)

(6) Remove the grille. (Fig. 3-24)

Attaching the grille

(1) Close the flap.

(2) Keep the grille installation tabs aligned with the top

portion of the grille, and reinstall the lower portion of the grille. Fit the installation tabs into the grooves and press the lower portion of the grille back into its original position to install it.

(3) Press on the installation tabs to completely close

the grille. Check that the grille and frame are fitted tightly together.

Fig. 3-20

Fig. 3-21

Fig. 3-22

Fig. 3-23

Fig. 3-24

4.8 mm dia. hole

Rawl plug

Intake grille

Filter

Flap

Open the

rille

Installation screw cover

Remove the grille

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Page 26

MAFP

3-10. Preparing the Tubing

(1) Arrangement of tubing by directions

a) Right or left tubing

The corner of the right or left frame should be cut with a hack saw or similar. (Fig. 3-25)

b) Right-rear or left-rear tubing

In this case, the corners of the frame do not

need to be cut.

(2) Be sure to insulate the part of the drain hose that

is run indoors, and the refrigerant tubing. If these are not insulated, condensation may result in dripping and damage to walls and furniture. The flare nuts on the 25-type (only) are large; therefore, use the supplied insulation material.

(3) To mount the indoor unit on the rear panel.

1. When installing the indoor unit, position the indoor unit onto the installation tabs on the upper part of the rear panel. (Fig. 3-26)

2. Press on the air outlet to hold it in place, and press the lower part of the indoor unit until a “click” sound is heard and the indoor unit is securely fastened to the installation tabs on the lower side of the rear panel. (Fig. 3-27)

Raising the clamp to lift up the indoor unit will facilitate this work. (Fig. 3-28)

To remove the indoor unit, press up on the 2 locations ( ▲▲ marks) on the lower part of the unit frame to disconnect the installation tabs. Refer to Section 3-6. “Removing the Rear Panel from the Unit (Fig. 3-13).” Then lift up the indoor unit to remove it.

3-11. Shaping the Tubing

Right-rear tubing

(1) Shape the refrigerant tubing so that it can easily

go into the hole. (Fig. 3-29)

(2) After performing a leak test, wrap both the refriger-

ant tubing and drain hose together with insulating tape. The drain hose should be positioned below the refrigerant tubes, and should be given sufficient space so that no strong tension is applied to it.

(3) Push the wiring, refrigerant tubing and drain hose

through the hole in the wall. Adjust the indoor unit so it is securely seated on the rear panel.

Fig. 3-25

Frame

Right tubing outlet

When left and right side tubing

Fig. 3-26

Installation tabs

Fig. 3-27

Press

Fig. 3-28

Clamp

Fig. 3-29

Insulating

tape

Refrigerant

tubing

Rear panel tab

Plastic cover

Indoor and outdoor unit connection wiring

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Page 27

MAFP

Fig. 3-32

Fig. 3-30

Insulation

Fig. 3-31

Insulating tape

Rear panel

Inter-unit wiring

Refrigerant tubing

Drain hose

Indoor unit

Slant

Refrigerant tubing

3-12. Installing the Drain Hose

a) The drain hose should be slanted downward to the

outside. (Fig. 3-32)

b) Never form a trap in the course of the hose.

c) If the drain hose will run in the room, insulate* the

hose so that chilled condensation will not damage furniture or floors.

* Foamed polyethylene or its equivalent is recom-

mended.

WARNING

Do not supply power to the unit or operate it until all tubing and wiring to the outdoor unit are completed.

Left or left-rear tubing

(1) Pass the tubing and drain hose into the rear of the

indoor unit. Provide sufficient length for the connections to be made. Next, bend the tubing with a pipe bender, and connect them.

(2) After performing a leak test, wrap the refrigerant

tubing and drain hose together with insulating tape, as shown in the figure at right. Then fit the tubing into the tubing storage space in the rear of the indoor unit and clamp in place.

(3) Adjust the indoor unit so that it is securely installed

onto the rear panel.

04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 27

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SPAFP

■ Ceiling Mounted Type (SPAFP Type)

3-13. Required Minimum Space for Installation and Service

(1) Dimensions of suspension bolt pitch and unit

12, 16, 18

36, 48

855

1125

1540

910

1180

1595

210

ABC

Length

Type

170

320

680

27.5

Ceiling side

(Suspension bolt pitch)

Air intake

Air

(2) Refrigerant tubing • drain hose position

(3) Unit opening position (Refrigerant tubing • drain hose • power inlet port • remote controller wiring inlet port)

251 84 146 161

75 97 216

171

105

171

251

Wide tubing

Narrow tubing

Right side

Left side

Rear (Figure shows view from front)

Closed with rubber stopper at time of shipment.

Left drain position Right drain position

(Narrow tubing • Wide tubing)

123

110 7 6

216

50130

Left-side drain hose outlet port

Right-side drain hose outlet port

Top outlet port

Remote controller wiring inlet port (φ30, knock-out)

Power inlet port (φ40, knock-out)

Knock-out

Side panel

Position of plate inside side panel

Side panel

Left-side drain hose outlet port

Rear tubing hole

171

347

125 72

85106

262

Remote controller wiring inlet port (φ30, rubber grommet on right side only)

Outside air intake duct connection port (φ100, knock-out)

Rear outlet port

Fig. 3-33

Fig. 3-35

Fig. 3-34

*1 Use a compass saw, jig saw or simi-

lar tool and cut along the indented portion of the side panel.

*2 If the optional drain up kit is installed,

this becomes the upper tubing outlet port. For details, refer to the manual for the optional part.

*3 If the remote controller wiring inlet

port is changed to the left side or the left top side, change the location of the rubber grommet. Use aluminum tape or similar material to seal the unused inlet port on the right side.

Unit: mm

04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 28

Page 29

SPAFP

(4) Wall and ceiling side opening position

145

135

125

155

Figure shows view from front Figure shows view from top

φ100 wall side opening (for left-side drain hose)

φ100 wall side opening

φ100 ceiling opening

Wall

Ceiling

Full-scale installation diagram

Wall

Ceiling

Fig. 3-37

Fig. 3-36

Fig. 3-38

3-14. Suspending the Indoor Unit

(1) Place the full-scale diagram (supplied) on the ceil-

ing at the spot where you want to install the indoor unit. Use a pencil to mark the drill holes. (Fig. 3-37).

Since the diagram is made of paper, it may shrink or stretch slightly because of high temperature or humidity. For this reason, before drilling the holes maintain the correct dimensions between the markings.

(2) Drill holes at the 4 points indicated on the full-

scale diagram.

(3) Depending on the ceiling type:

a) Insert suspension bolts as shown in Fig. 3-38.

b) Use existing ceiling supports or construct a suit-

able support as shown in Fig. 3-39.

NOTE

WARNING

It is important that you use extreme care in supporting the indoor unit from the ceiling. Ensure that the ceiling is strong enough to support the weight of the unit. Before hanging the ceiling unit, test the strength of each attached suspension bolt.

(4) Screw in the suspension bolts, allowing them to

protrude from the ceiling as shown in Figs. 3-38 and 3-39. The distance of each exposed bolt must be of equal length within 50 mm. (Fig. 3-40)

Hole-in-anchor Hole-in-plug

Concrete Insert

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

Fig. 3-39

Fig. 3-40

Ceiling tiles

Ceiling support

unit

Ceiling surface

Fixture

Within

50 mm

* If the optional drain up kit is installed, create a φ100 hole along the dotted line (part marked with * in figure).

Unit: mm

04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 29

Page 30

SPAFP

Fig. 3-41

Slide

Hinge

Air-intake grille

Pull out the air-intake grille pushing claws of the hinges

Screw

Latch

Fig. 3-42

Slide toward front side

Side panel

Fig. 3-43

Unit

Suspension bolt (field supply)

Ceiling surface

Washer (supplied)

Double nut (field supply)

Fixture

Fig. 3-44

Unit

Suspension bolt (field supply)

Washer (supplied)

Washer (field supply)

Double nut (field supply)

Fig. 3-45

Ceiling surface

Approx.

25 mm

Suspension bolt

Washer

(supplied)

Nut (field supply)

(5) Before suspending the indoor unit, remove the 2

or 3 screws on the latch of the air-intake grilles, open the grilles, and remove them by pushing the claws of the hinges as shown in Fig. 3-41. Then remove both side panels sliding them along the unit toward the front after removing the 2 attachment screws. (Fig. 3-42)

(6) Carry out the preparation for suspending the

indoor unit. The suspension method varies depending on whether there is a suspended ceiling or not. (Figs. 3-43 and 3-44)

(7) Suspend the indoor unit as follows:

a) Mount 1 washer and 2 hexagonal nuts on each

suspension bolt as shown in Fig. 3-45.

04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 30

Page 31

SPAFP

Fig. 3-46

Fig. 3-47

Fig. 3-48

Indoor side

Outdoor side

Fig. 3-49

Cut at slight angle

PVC pipe (locally purchased)

INSIDE

Wall

Slight angle

PVC pipe

OUTSIDE

b) Lift the indoor unit, and place it on the washers

through the notches, in order to fix it in place. (Fig. 3-46)

c) Tighten the 2 hexagonal nuts on each suspen-

sion bolt to suspend the indoor unit as shown in Fig. 3-47.

The ceiling surface is not always level. Confirm that the indoor unit is evenly suspended. For the installation to be correct, leave a clearance of about 10 mm between the ceiling panel and the ceiling surface and fill the gap with an appropriate insulation or filler material.

(8) If the tubing and wiring are to go towards the rear

of the unit, make holes in the wall. (Fig. 3-48)

(9) Measure the thickness of the wall from the inside

to the outside and cut PVC pipe at a slight angle to fit. Insert the PVC pipe in the wall. (Fig. 3-49)

NOTE

The hole should be made at a slight downward slant to the outside.

NOTE

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Page 32

SPAFP

3-15. Duct for Fresh Air

There is a duct connection port (knock-out hole) at the right-rear of the top panel of the indoor unit for drawing in fresh air. If it is necessary to draw in fresh air, remove the cover by opening the hole and connecting the duct to the indoor unit through the connection port. (Fig. 3-50)

3-16. Shaping the Tubing

● The positions of the refrigerant tubing connections

are shown in the figure below. (The tubing can be routed in 3 directions.)

* When routing the tubing out through the top or right

sides, knock out the appropriate parts in the top panel and cut notches in the side panel as shown in Fig. 3-35.

* When routing the tubing out through the top, the

optional L-shape tubing kit is required.

3-17. Installing the Drain Piping

● Prepare standard PVC pipe for the drain and con-

nect it to the indoor unit drain pipe with the supplied hose clamps to prevent water leaks.

(1) Drain hose connection

● The drain hose is connected below the refrigerant

tubing.

(2) Installing the drain hose

● To install the drain hose, first place 1 of the 2 hose

bands over the unit drain port and the other hose band over the hard PVC pipe (not supplied). Then connect both ends of the supplied drain hose.

● On the unit drain side, grasp the hose band with

pliers and insert the drain hose all the way to the base.

Power inlet port (φ40, knock-out)

Left-side drain hose outlet port

Rear tubing hole

Remote controller wiring inlet port (φ30, rubber grommet on right side only)

Outside air intake duct connection port (φ100, knock-out)

Rear outlet port

Fig. 3-50

Rear cover

CAUTION

● Attach so that the hose

band fastener is on the side of the drain port. (Fig. 3-54)

● Attach the hose bands so

that each is approximately 5 to 25 mm from the end of the supplied drain hose.

If the tubing is to be routed out together, use a box cutter or similar tool to cut out the part of the rear cover indicated by the marked area in the figure below, to match the positions of the tubes. Then draw out the tubing.

Fig. 3-51

Fig. 3-52

04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 32

Page 33

SPAFP

140

25 25

Position to fasten hose bands

Drain hose (supplied)

Hose band (2 bands, supplied)

Unit drain pan

Unit drain port

Drain hose insulation (supplied)

Twist tie (4 ties, supplied)

Hard PVC pipe (equivalent to VP-20) (Field supply)

Fig. 3-54

Good

Min. 1/100

Not good

Fig. 3-53

● If other commercially available hose bands are

used, the drain hose may become pinched or wrinkled and there is danger of water leakage. Therefore be sure to use the supplied hose bands. When sliding the hose bands, be careful to avoid scratching the drain hose.

● Do not use adhesive when connecting the supplied

drain hose to the drain port (either on the main unit or the PVC pipe).

● Wrap the hose with the supplied drain hose insula-

tion and use the 4 twist ties so that the hose is insulated with no gaps.

● Connect the drain piping so that it slopes down-

ward from the unit to the outside. (Fig. 3-53)

● Never allow traps to occur in the course of the piping.

● Insulate any piping inside the room to prevent drip-

ping.

● After the drain piping, pour water into the drain pan

to check that the water drains smoothly.

● If the drain hose is to be raised, use the optional

drain up kit. The drain hose can be raised 60 cm above the top of the main unit. (For details, refer to the manual for the optional part.)

* If the drain hose is routed

through the left side, refer to Fig. 3-51, and follow the procedure above to install the hose. Rettach the rubber stopper removed earlier onto the right side. The rubber stopper can be inserted easily by using a screwdriver or similar tool to press the stopper into the drain port on the main unit. Press the stopper into the main unit drain port as far as it will go.

Screwdriver

Rubber stopper

Drain port

CAUTION

Check local electrical codes and regulations before wiring. Also, check any specified instruction or limitations.

Unit: mm

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 33

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SPAFP

* Insert the remote controller

wiring into the electrical component box from the inlet port as shown in the figure. This is done regardless of whether the wiring was inserted from the top, rear, or left side of the main unit.

Remote controller wiring inlet port

Power, inter-unit wiring

Power, inter-unit wiring, remote controller wiring inlet port

Clamp

How to carry out power supply wiring

(1) Wiring connection ports

The power inlet ports are located at the rear and top.

The remote controller wiring inlet ports are located at the rear and top (for use with the wired remote controller). For details, refer to Fig. 3-50. For the method used to insert the wiring, refer to the figure below. (Fig. 3-55)

(2) How to carry out wiring

● Open the knock-out hole on the rear or top of the

main unit. Attach the supplied rubber grommet and pull the power wiring into the main unit.

● Feed the wiring into the wiring inlet port on the

electrical component box. Connect the wiring to the terminal plate and fasten in place with the supplied clamp.

● Perform electrical and grounding work in accor-

dance with the package A/C power specifications, and following local electrical codes and regulations.

CAUTION

When removing the fastening bracket from the cover of the electrical component box, use caution to avoid dropping the bracket.

Fig. 3-55

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 34

Page 35

DSAFP

Fig. 3-56

Fig. 3-57

Indoor unit

Inspection access 450 450

Air outlet duct flange

min. 250

min. 400

min. 650

580

A (Suspension bolt pitch)

Electrical component box

Refrigerant tubing

min.

250

■ Concealed-Duct Type (DSAFP Type)

3-18. Required Minimum Space for Installation and

Service

● This air conditioner is usually installed above the ceiling

so that the indoor unit and ducts are not visible. Only the air intake and air outlet ports are visible from below.

● The minimum space for installation and service is

shown in Fig. 3-56 and Table 3-3.

● It is recommended that space is provided (450 × 450

mm) for checking and servicing the electrical system.

● Fig. 3-57 and Table 3-4 show the detailed dimensions

of the indoor unit.

Table 3-3

Table 3-4

Type

A (Length)

Number of duct flanges

36, 48

1,560

1,080

12, 16, 18

780

Dimension

Type

12, 16, 18

36, 48

G H

662

600

700 780 290 262 680 715 180 – 340 8 12

(200 × 3)

962

900

1,000 1,080 290 272 980 1,015 130

245

250 12 16

(180 × 5) (245 ×

1,442

1,380

1,480 1,560

335

310

1,460 1,495 130

490

240 16 18

(230 × 6) (245 ×

No. of holes

Refrigerant tubing joint (narrow tube) Refrigerant tubing joint (wide tube) Upper drain port (O.D. 32 mm) Bottom drain port (O.D. 26 mm) Suspension lug Power supply outlet (2-ø30) Fresh air intake port (ø150) Flange for the flexible air outlet duct (ø200) Tube cover Electrical component box Flange for the air intake duct (Option or field supply)

(Suspension bolt pitch)

M-ø3.3

(Hole)

4-ø12 (Hole)

(Hole)

A (O.D.)

L-ø6

10 10

5555 200

IJJK

C D(150)

EEEF75

285

70 130

25 210

310

175

3131

H (Duct suspension bolt pitch)

G (Ceiling opening dimension)

100

185

58025

115

190

70 30

160

630 25

275

(Ceiling opening dimension)

260

(O.D.)

1919

Inspection access

(450 × 450)

(Field supply)

Inspection access panel

Ceiling

Unit: mm

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 35

Page 36

DSAFP

Fig. 3-58

3-19. Suspending the Indoor Unit

Depending on the ceiling type:

• Insert suspension bolts as shown in Fig. 3-58

• Use existing ceiling supports or construct a suitable support as shown in Fig. 3-59.

Hole-in-anchor Hole-in-plug

Concrete Insert

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

Fig. 3-59

Fig. 3-60

Fig. 3-61

Ceiling tiles

Ceiling support

Suspension bolt

Suspension lug

Nuts and washers (use for upper and lower)

Double nuts

Notch

Suspension bolt

Hexagonal nut

Double nuts

WARNING

It is important that you use extreme care in supporting the indoor unit inside the ceiling. Ensure that the ceiling is strong enough to support the weight of the unit. Before hanging the unit, test the strength of each attached suspension bolt.

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

the pitch of the suspension bolts referring to the dimensional data on the previous page. (Fig. 3-56 and Table 3-3) Tubing must be laid and connected inside the ceiling when suspending the unit. If the ceiling is already constructed, lay the tubing into position for connection to the unit before placing the unit inside the ceiling.

(2) Screw in the suspension bolts allowing them to

protrude from the ceiling as shown in Fig. 3-58. (Cut the ceiling material, if necessary.)

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

supply) onto each of the 4 suspension bolts as shown in Figs. 3-60 and 3-61. Use 1 nut and 1 washer for the upper part, and 2 nuts and 1 washer for the lower part, so that the unit will not fall off the suspension lugs.

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 36

Page 37

DSAFP

● Fig. 3-62 shows an example of installation.

Air outlet duct

Air-outlet grille

Ceiling material Indoor unit

Bolt anchor

Suspension bolt

Air-intake duct

Air-intake grille

Fig. 3-62

Fig. 3-63

Fig. 3-64

Drain hose

(supplied)

(not supplied)

Packing (supplied)

VP-25

Align the hose band with end of the hose, and tighten so that it does not contact the bead.

Drainage check section on drain port (transparent)

Hard PVC socket VP-25

Hard PVC pipe

PVC adhesive

Bead

Vinyl clamps

Drain insulator (supplied)

3-20. Installing the Drain Piping

(1) Prepare standard hard PVC pipe (O.D. 32 mm) for

the drain and use the supplied hose band to prevent water leaks. The PVC pipe must be purchased separately. The transparent drain part on the unit allows you to check drainage. (Fig. 3-63)

CAUTION

● Do not use adhesive at the

drain connection port on the indoor unit.

● Insert the drain pipe until it

contacts the socket, as shown in the figure at right, then secure it tightly with the hose band.

● Do not use the supplied

drain hose bent at a 90° angle. (The maximum permissible bend is 45°.)

● Tighten the hose clamps so

their locking nuts face upward. (FIg. 3-63)

(2) After connecting the drain piping securely, wrap

the supplied packing and drain pipe insulator around the pipe, then secure it with the supplied vinyl clamps. (Fig. 3-64)

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

NOTE

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 37

Page 38

DSAFP

Fig. 3-65

Fig. 3-66

Fig. 3-67

Fig. 3-68

Fig. 3-69

Air bleeder

Prohibited

Good

30 cm or less

50 cm or less

Prohibited

Upward gradient

Support pieces

Water intake

● If it is necessary to increase the height of the

drain pipe, the section directly after the connection port can be raised a maximum of 50 cm. Do not raise it any higher than 50 cm, as this could result in water leaks. (Fig. 3-66)

● Do not install the pipe with an upward gradient

from the connection port. This will cause the drain water to flow backward and leak when the unit is not operating. (Fig. 3-67)

● Do not apply force to the piping on the unit side

when connecting the drain pipe. The pipe should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible. (Fig. 3-68)

3-21. Checking the Drainage

After 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 (R, S

terminals) inside the electrical component box.

(2) Remove the tube cover and through the opening,

slowly pour about 1,200 cc of water into the drain pan to check drainage.

(3) Short the check pin (CHK) on the indoor control

board and operate the drain pump. Check the water flow through the transparent drain port and see if there is any leakage.

(4) When the check of drainage is complete, open the

check pin (CHK) and remount the insulator and drain cap onto the drain inspection port.

CAUTION

● Do not install an air bleed-

er as this may cause water to spray from the drain pipe outlet. (Fig. 3-65)

CAUTION

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

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 38

Page 39

DSAFP

NOTE

HT : Using the booster cable

At shipment

Air Flow (m

/minute)

External Static Pressure

100

15150

(mmAq)

(Pa)

Limit line

Air Flow (m

/minute)

External Static Pressure

15150

Limit line

100

(mmAq)

(Pa)

30 40

Air Flow (m

/minute)

External Static Pressure

150

Limit line

100

(mmAq)

(Pa)

Air Flow (m

/minute)

External Static Pressure

150

Limit line

100

Limit line

(mmAq)

(Pa)

Air Flow (m

/minute)

External Static Pressure

15150

Limit line

100

(mmAq)

(Pa)

16, 18 Type12 Type

Indoor Fan Performance

25 Type 36 Type 48 Type

3-22. Increasing the Fan Speed

If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure:

(1) Remove 4 screws on the electrical component box

and remove the cover plate.

(2) Disconnect the fan motor sockets in the box.

(3) Take out the booster cable (sockets at both ends)

clamped in the box.

(4) Securely connect the booster cable sockets

between the disconnected fan motor sockets in step 2 as shown in Fig. 3-70.

(5) Place the cable neatly in the box and reinstall the

cover plate.

Fig. 3-70

Fig. 3-71

Booster cable

Electrical component box

(At shipment) (Booster cable installed)

Fan motor socket

Fan

motor

■ How to read the diagram

The vertical axis is the external static pressure (Pa) while the horizontal axis represents the air flow (m

/minute). The characteristic curves for “HT,” “H,” “M” and “L” fan speed control are shown. The nameplate values are shown based on the “H” air flow. For the 25 type, the air flow is 18 m3/minute, while the external static pressure is 49 Pa at “H” position. If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed as explained above.

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 39

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DSAFP

4. HOW TO INSTALL THE OUTDOOR UNIT

4-1. Installing the Outdoor Unit

● Use concrete or a similar material to create the base,

and ensure good drainage.

● Ordinarily, ensure a base height of 5 cm or more. If a

drain pipe is used, or for use in cold-weather regions, ensure a height of 15 cm or more at the feet on both sides of the unit. (In this case, leave clearance below the unit for the drain pipe, and to prevent freezing of drainage water in cold-weather regions.)

● Refer to the Fig. 4-1 for the anchor bolt dimensions.

● Be sure to anchor the feet with the anchor bolts

(M10). In addition, use anchoring washers on the top side. (Use large square 32 ( 32 SUS washers with JIS nominal diameters of 10.) (Field supply)

4-2. Drainage Work

Follow the procedure below to ensure adequate draining for the outdoor unit.

● For the drain port dimensions, refer to the figure at

right.

● Ensure a base height of 15 cm or more at the feet on

both sides of the unit.

● When using a drain pipe, install the drain socket

(optional part STK-DS25T) onto the drain port. Seal the other drain port with the rubber cap supplied with the drain socket.

● For details, refer to the instruction manual of the

drain socket (optional part STK-DS25T).

4-3. Routing the Tubing and Wiring

● The tubing and wiring can be extended out in 4 direc-

tions: front, rear, right, and down.

● The service valves are housed inside the unit. To

access them, remove the inspection panel. (To remove the inspection panel, remove the 3 screws, then slide the panel downward and pull it toward you.)

(1) If the routing direction is through the front, rear, or

right, use a nipper or similar tool to cut out the knockout holes for the inter-unit control wiring outlet, power wiring outlet, and tubing outlet from the appropriate covers A and B.

(2) If the routing direction is down, use a nipper or simi-

lar tool to cut out the lower flange from cover A.

Fig. 4-1

942

296

150

219

13 13

15 10380

405

341

1313

171

660 111

Drain port (2 locations)

Drain port

Anchor bolt (M10)

Fig. 4-2

Inter-unit control wiring outlet

Inspection panel

Cover A

Cover B

Power wiring outlet

Tubing outlet

Down

Front

Rear

Right

CAUTION

● Route the tubing so that it does

not contact the compressor, panel, or other parts inside the unit. Increased noise will result if the tubing contacts these parts.

● When routing the tubing, use a

tube bender to bend the tubes.

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 40

Page 41

Control wiring

(D) Remote control wiring (E) Control wiring for group control

0.75 mm

(AWG #18)

0.75 mm

(AWG #18)

0.75 mm

(AWG #18)

Use shielded wiring* Use shielded wiring Use shielded wiring

Max. 1,000 m

Max. 500 m

Max. 500 m (Total)

5. ELECTRICAL WIRING

5-1. General Precautions on Wiring

(1) Before wiring, confirm the rated voltage of the unit

as shown on its nameplate, then carry out the wiring closely following the wiring diagram.

(2) Provide a power outlet to be used exclusively for

each unit, and a power supply disconnect and circuit breaker for overcurrent protection should be provided in the exclusive line.

(3) To prevent possible hazards from insulation fail-

ure, the unit must be grounded.

(4) Each wiring connection must be done in accor-

dance with the wiring system diagram. Wrong wiring may cause the unit to misoperate or become damaged.

(5) Do not allow wiring to touch the refrigerant tubing,

compressor, or any moving parts of the fan.

(6) Unauthorized changes in the internal wiring can be

very dangerous. The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes.

(7) Regulations on wire diameters differ from locality

to locality. For field wiring rules, please refer to your LOCAL ELECTRICAL CODES before beginning.

You must ensure that installation complies with all relevant rules and regulations.

(8) To prevent malfunction of the air conditioner

caused by electrical noise, care must be taken when wiring as follows:

● The remote control wiring and the inter-unit control

wiring should be wired apart from the inter-unit power wiring.

● Use shielded wires for inter-unit control wiring

between units and ground the shield on both sides.

(9) If the power supply cord of this appliance is dam-

aged, it must be replaced by a repair shop appointed by the manufacture, because special purpose tools are required.

5-2. Recommended Wire Length and Wire Diameter for Power Supply System

Outdoor unit

(A) Power supply

Wire size

Max. length

GRFP255L, GRFP255R 24 m

30 A GRFP365L, GRFP365R 22 m 40 A GRFP485L, GRFP485R 20 m 50 A

4 mm 4 mm 4 mm

Time delay fuse or circuit capacity

NOTE

* With ring-type wire terminal.

Indoor unit

Time delay fuse or

circuit capacity

(B) Power supply

2.5 mm

MAFP

CAFP, SPAFP, DSAFP

Type

Max. 150 m

Max. 130 m

10 A

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 41

Page 42

5-3. Wiring System Diagrams

R1 R2

Group control:

WHT

Remote controller

Indoor unit (No. n)

Indoor unit (No. 1)

Indoor unit (No. 2)

Indoor unit (No. 3)

Ground

L N

BLK

Power supply 220-240V 50Hz

Ground

Power supply 200-240V 50Hz

Power supply 220-240V 50Hz

Ground

Outdoor unit INV unit

NOTE

(1) Refer to Section 5-2. “Recommended Wire Length

and Wire Diameter for Power Supply System” for the explanation of “A,” “B,” “C,” “D,” and “E,” in the above diagrams.

(2) The basic connection diagram of the indoor unit

shows the 7P terminal board, so the terminal boards in your equipment may differ from the diagram.

(3) Refrigerant Circuit (R.C.) address should be set

before turning the power on.

1(L)2(N) Power

supply

Inter-unit

control wiring

Remote

controller

8P terminal board

R1 R2

1 2 U1 U2 R1 R2

DSAFP Type

MAFP Type

1(L)2(N)

12345

Power

supply

Inter-unit

control wiring

5P terminal board

U1 U2

1(L) 2(N) Power

supply

U1 Inter-unit

control wiring

Remote

controller

CAFP, SPAFP Type

7P terminal board

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 42

Page 43

Outdoor unit

Indoor unit Indoor unit Indoor unit Indoor unit

Indoor unit

more than 1 m

Branch point

16 or fewer

Indoor unit

Indoor unit Indoor unit Indoor unit

less than 1 m

Indoor unit

Outdoor unit Indoor unit Indoor unit Indoor unit

Indoor unit Indoor unit Indoor unit

Outdoor unit

Indoor unit

Branch point

(1) When linking outdoor units in a network (S-net link system), disconnect the terminal extended from the

short plug (CN003, 2P Black, location: right bottom on the outdoor main control PCB) from all outdoor units except any one of the outdoor units. (When shipping: In shorted condition.)

Otherwise the communication of S-net link system is not performed. For a system without link (no connection wiring between outdoor units), do not remove the short plug.

(2) Do not install the inter-unit control wiring in a way that forms a loop. (Fig. 5-1)

Outdoor unit Outdoor unit Outdoor unit

Prohibited

Indoor unit Indoor unit Indoor unit Indoor unit

Indoor unit

Fig. 5-1

Fig. 5-2

Fig. 5-3

CAUTION

(3) Do not install inter-unit control wiring such as star

branch wiring. Star branch wiring causes mis-address setting.

(4) If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.

(Branches less than 1 m are not included in the total branch number.) (Fig. 5-3)

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 43

Page 44

Fig. 5-4

Shielded wire

Ground

Fig. 5-5

Stranded wire

Ring pressure terminal

Strip 10 mm

Fig. 5-6

Wire

Special washer

Screw

Ring pressure terminal

Terminal plate

Screw and Special washer

Ring pressure terminal

Wire

(5) Use shielded wires for inter-unit control wiring

(c) and ground the shield on both sides, otherwise misoperation from noise may occur. (Fig. 5-4) Connect wiring as shown in Section “5-3. Wiring System Diagrams.”

WARNING

Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, ensure that all wiring is tightly connected.

When connecting each power wire to the terminal, follow the instructions on “How to connect wiring to the terminal” and fasten the wire securely with the fixing screw of the terminal plate.

How to connect wiring to the terminal

■ For stranded wiring

(1) Cut the wire end with cutting pliers, then strip the

insulation to expose the stranded wiring about 10 mm and tightly twist the wire ends. (Fig. 5-5)

(2) Using a Phillips head screwdriver, remove the ter-

minal screw(s) on the terminal plate.

(3) Using a ring connector fastener or pliers, securely

clamp each stripped wire end with a ring pressure terminal.

(4) Place the ring pressure terminal, and replace and

tighten the removed terminal screw using a screwdriver. (Fig. 5-6)

04-393 DC INV Tech p a-44 12/15/04 3:05 PM Page 44

Page 45

Fig. 6-2

120

2.7

Diagram of outer dimensions

6. HOW TO INSTALL THE REMOTE CONTROLLER (OPTIONAL PART)

Remote controller wiring can be extended to a maximum of 1,000 m.

■ How to install the remote controller

(Optional Controller)

CAUTION

● Do not twist the control

wiring with the power wiring or run it in the same metal conduit, because this may cause malfunction.

● Install the remote con-

troller away from sources of electrical noise.

● Install a noise filter or

take other appropriate action if electrical noise affects the power supply circuit of the unit.

The mounting position for the remote controller should be located in an accessible place for control. Never cover the remote controller or recess it into the wall.

(1) When you open the decorative cover, you will see 2

gaps under the remote controller. Insert a coin into these gaps and pry off the back case. (Fig. 6-1)

6-1. When Using a Wall Box for Flush Mounting

● If local codes allow, this remote controller can be

mounted using a conventional wall box for flush mounting.

(2) Attach the back case with the 2 small screws pro-

vided. Using a screwdriver, push open the cut-outs on the back case. These holes are for screws. Use the spacers and take care not to tighten the screws excessively. If the back case will not seat well, cut the spacers to a suitable thickness. (Fig. 6-1)

(3) Connect the remote controller wiring (2 wires) cor-

rectly to the corresponding terminals in the electrical component box of the indoor unit.

(4) To finish, fit the back tabs of the case into the

remote controller and mount it.

CAUTION

When wiring, do not connect the remote controller wires to the adjacent terminal block for the power wiring. Otherwise, the unit will break down.

CAUTION

Do not supply power to the unit or try to operate it until the tubing and wiring to the outdoor unit is completed.

Fig. 6-1

Opening for switch box

Under case (Back case)

M4 × 25 screws (2)

Remote controller

Decorative cover

Spacer

Remote controller switch

(with 200 mm wire)

Small screws M4 × 25

Wood screws

Spacers

Wire joints

Accompanying partsAccompanying parts No.No.

Q’tyQ’ty

Accessories for remote controller switch

Unit: mm

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 45

Page 46

6-2. Basic Wiring Diagram (Twin, Triple, Double-Twin)

CAUTION

Install wiring correctly (incorrect wiring will damage the equipment).

● Use shielded wires for remote control wiring and

ground the shield on one side. (Fig. 6-3) Otherwise misoperation due to noise may occur.

Fig. 6-3

Fig. 6-4

Shielded wire

Ground

6-3. Wiring System Diagram for Group Control

This diagram shows when several units (maximum of

4) are controlled by a remote controller (master unit).

In this case, a remote controller can be connected at any indoor unit.

Wiring procedure

Wire according to the right diagram:

● Each successive unit will respond at 1-second

intervals following the order of the group address when the remote controller is operated.

Group control using 2 remote controllers

It does not matter which of the 2 remote controllers you set as the main controller.

When using multiple remote controllers (up to 2 can be used), one serves as the main remote controller and the other as the sub-remote controller.

Outdoor unit

Indoor unit

No. 4

Indoor unit

No. 3

Indoor unit

No. 2

Indoor unit

No. 1

Remote controller

Connection wiring for group control

Inter-unit control wiring

Terminal 3P

(sub)

3P terminal base for remote control wiring

Remote controller (main)

Indoor unit

No. 1

: Ground (earth)

Indoor unit

No. 2

Indoor unit

No. 4

Indoor unit

No. 3

Connection wiring for group control

Fig. 6-5

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 46

Page 47

Cautions on group control

● Group control within the same refrigerant tub-

ing system is recommended.

[Tubing system which is NOT recommended]

<Example 1> In this system, group control extending

over tubing systems becomes impossible to set, which means the indoor units cannot operate.

NOTE

Tubing system 2

Tubing system 1

Indoor units

Remote controller

TIMER TMNL.

RCU

TMNL.

RCU.ADR

RCU.Main

RCU.Sub

RCU.CK

To Service Technicians

To display the sensor temperature:

WARNING

To avoid an electric shock hazard, DO NOT touch any terminal on the Printed Circuit Board with a metal rod, a screwdriver edge or bare hand when power is supplied.

Press both and buttons on the remote controller for more than 4 seconds together. Change the sensor address (CODE NO.) with / (SET TEMP) buttons. Select the UNIT NO. that you want to call with button. Press the button to finish service mode.

To display the trouble history:

Press both and buttons on the remote controller for more than 4 seconds together. Change the alarm message: / (SET TEMP) buttons CODE NO.

Press the button to finish service mode.

On the remote controller, press + + at the same time for more than 4 seconds. Set CODE No. with / (SET TEMP) button.

Set DATA from to with / (TIMER) button. Press Finally, Press

(New) (Old)

Changing method for room temperature sensor (from Indoor unit to RCU)

Remote Controller (Sub)

Remote controller address connector

Remote Controller (Main)

Setting the main and sub remote controllers

1. Set one of the 2 connected remote controllers as the main remote controller.

2. On the other remote controller (sub-remote controller), switch the remote controller address connector on the

rear of the remote controller PCB from Main to Sub. When the connector has been switched, the remote controller will function as the sub-remote controller.

Fig. 6-6

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 47

Page 48

6-4. Switching the Room Temperature Sensors

Room temperature sensors are contained in the indoor unit and in the remote controller. One or the other of the temperature sensors is used for operation. Normally, the indoor unit sensor is set; however, the procedure below can be used to switch to the remote controller sensor.

(1) Press and hold the + + buttons for 4 seconds or longer.

● The unit No. that is initially displayed is the indoor unit address of the group control master unit.

● Do not press the button.

(2) Use the temperature setting / buttons to select item code 32.

(3) Use the timer time / buttons to change the setting data from 0000 to 0001.

(4) Press the button. (The change is completed when the display stops blinking.)

(5) Press the button.

The unit returns to normal stop status. At this time, “Remote controller sensor” is displayed on the LCD.

● If 2 remote controllers are used for control, this setting can be made from either the main or sub remote con-

troller. However, the temperature sensor that is used is the sensor in the main remote controller.

● When group control is used, the remote controller sensor will not function unless the group address is set to the

address of the master indoor unit.

● If both the remote sensor and remote controller are used, do not use the temperature sensor in the remote con-

troller.

6-5. Connecting to a Ventilation Fan

If a commercially available ventilation fan or similar device is run from the ventilation fan output terminal (FAN DRIVE: 2P (white), DC 12 V) (Note) on the indoor unit PCB, use the button to enable fan operation and change the settings.

(1) Press and hold the + + buttons for 4 seconds or longer.

● The unit No. that is initially displayed is the indoor unit address of the group control master unit.

● Do not press the button.

(2) Use the temperature setting / buttons to select item code 31.

(3) Use the timer time / buttons to change the setting data from 0000 to 0001.

(4) Press the button. (The change is completed when the display stops blinking.)

(5) Press the button.

The unit returns to normal stop status. Press the button and check that “Fan” is displayed on the LCD display.

(Note) A special relay is required to run the ventilating fan.

NOTE

11 22

Relay (DC12V, field supply)

External control input for ventilation fan

Indoor unit control PCB

FAN DRIVE

(2P white)

To terminal

NOTE: The wiring from the indoor unit control PCB to the relay must be no more than 2 m in length.

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 48

Page 49

6-6. Wiring the Remote Controller

● Connection diagram

● Use 0.5 mm

– 2 mm2wires.

(1) Strip the insulation to approximately 14 mm from

the ends of the wires that will be connected.

(2) Twist together the 2 wires and create a crimp con-

nection at the wire joint.

(3) If a special crimping tool is not used, or if the con-

nection is soldered, insulate the wires using insulation tape.

● Use the remote controller cord (optional) for remote

controller wiring.

(1) Disconnect the lead wire that is wound around the

lead wire anchor on the remote controller unit. Disconnect the connector and connect the remote controller cord (optional) to the connector on the remote controller unit. Insert the remote controller cord (optional) into the groove and bend it into the correct shape, then wind it around the lead wire anchor.

(2) If the remote controller cord (optional) is used,

refer to the installation manual that is provided with the cord.

Terminal board for indoor unit remote controller wiring

1 2

Remote controller wiring (field supply)

Connector

Remote controller unit

Power wire from remote controller unit

Approx. 200 mm

Remote controller wiring

Power wire from remote controller unit

Provided wire joint (white)

Wire joint CE-1, white

Remote controller cord (optional)

Connector

Lead wire anchor

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 49

Page 50

6-7. Trouble Diagnostics

(1) Contents of remote controller switch alarm display

Remote controller is detecting error signal from indoor unit

E01

E02

E10

E11

E14

E03

E08

E09

E04

E05

E06

E07

E15

E16

E20

E17

E18

E31

L01

L02

L03

L04

L07

L08

L09

L010

L011

L013

Indoor unit is detecting error signal from remote controller (and system controller)

Error in receiving serial communication signal (Signal from main indoor unit in case of group control)

Auto address is not completed

Outdoor system address, indoor system address, or indoor unit individual/main/sub setting is not set (Automatic address setting is not completed)

Error in transmitting serial communication signal

Improper setting of indoor unit or remote controller

Indoor unit address setting is duplicated

Remote controller setting is duplicated

Error in transmitting serial communications signal

Error in receiving serial communications signal

Indoor unit is detecting error signaled from signal option

Setting error Main unit duplication in simultaneous-operation multi control

(detected by outdoor unit)

Indoor unit is detecting error signaled from outdoor unit

Outdoor unit is detecting error signaled from indoor unit

Automatic address setting failed

An indoor unit detected trouble in the signal from another indoor unit

Communications trouble between units

Setting errorMis-setting

Continued

Error in transmitting serial communications signal

Indoor unit capacity too low

Indoor unit capacity too high

No indoor units connected

Error in receiving serial communications signal

Communications failure with MDC

Indoor unit group settings error

Indoor/outdoor unit type mismatch

Main unit duplication in group control (detected by indoor unit)

Outdoor unit address duplication (system address)

Group wiring connected for independent indoor unit

Address not set or group not set

Indoor unit capacity not set

Outdoor unit capacity not set or setting error

Miswiring in group control wiring

Indoor unit type setting error (capacity)

Error in transmitting serial communications signal

Error in receiving serial communications signal (including unit quantity verification failure)

Simultaneously

Serial communication errors Mis-setting

Wired remote control

display

Wireless

remote controller

receiver display

Operation

Timer

Standby

for heating

Possible cause of malfunction

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 50

Page 51

P09

P01

P10

P03

P05

P15

P19

P20

P22

P26

P29

P31

H01

F01

F02

F10

F04

F06

F07

F08

F12

F29

Ceiling panel connection failure

Indoor protection

Fan protective thermostat

Float switch

Discharge temperature trouble

Open phase detected, AC power trouble

No gas

4-way valve locked

High cooling load

Outdoor fan trouble

Inverter compressor trouble (HIC PCB)

Inverter compressor trouble (MDC)

Simultaneous-operation multi control trouble

Compressor current failure (overload)

Indoor heat exchanger temperature sensor (E1)

Indoor heat exchanger temperature sensor (E2)

Indoor temperature sensor

Discharge temperature (TD)

Outdoor heat exchanger temperature (C1)

Outdoor heat exchanger temperature (C2)

Outdoor air temperature (TO)

Intake temperature (TS)

Indoor EEPROM error

Outdoor protection

Thermistor open circuit

• Short circuit (indoor)

Thermistor open circuit

• Short circuit (outdoor)

Activation of protective device

Thermistor fault

Alternately

Alter.

Simul.

Alter.

Simul.

Alternately

Outdoor EEPROM error

F31

Wired remote control display

Wireless

remote controller

receiver display

ON:

Operation

Timer

Standby

for heating

Blinking: OFF:

Possible cause of malfunction

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 51

Page 52

(2) LED Indicator Messages on Outdoor Control PCB

Power ON sequence

1. No communication from indoor units in system

2. Communication received from 1 or more indoor units in system

3. Regular communication OK (Capacity and unit quantity match)

If it is not possible to advance to 3, repeats 1 → 2. At 3, changes to normal control.

P03

Normal operation

Pre-trip (insufficient gas)

Pre-trip (P20)

Pre-trip (other)

Automatic address setting in progress

Automatic address setting alarm (E15)

Automatic address setting alarm (E20)

Automatic address setting alarm (Other than E15 and E20)

Note: This table shows example alarms. Other alarms may also be displayed.

(0.25/0.75)

(0.75/0.25)

EEPROM error (F31)

Blinking alternately

Blinking simultaneously

Alarm

LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats.

M = 2: P alarm

6: L alarm N = Alarm No. * Refer to

“1. Examples of alarm display” below.

3: H alarm 4: E alarm 5: F alarm

Alternate blinking during alarms

Insufficient gas indicator

(0.25/0.75)

(0.75/0.25)

(0.25/0.75)

(0.75/0.25)

Refrigerant recovery mode

Automatic address setting

Displayed during automatic address setting 1 and initial communication. After these are completed, alarm F31 is displayed.

P03

P04

P05

P31

H01

H02

H03

•

E04

•

F07

•

L13

•

( Blinks 2 times )

(

)

(

)

(

)

(Blinks 3 times)

(

)

(

)

•

(Blinks 4 times)

•

(Blinks 5 times)

(Blinks 6 times)

•

(Blinks 3 times)

(Blinks 4 times)

(Blinks 5 times)

(Blinks 31 times)

(Blinks 1 times)

(Blinks 2 times)

(Blinks 3 times)

(Blinks 4 times)

(Blinks 7 times)

(Blinks 13 times)

Alarm / Display LED 1 Alternately

→

LED 2

LED 1 LED 2 Remarks

OFF

(3) Examples of alarm display (other than E15, E16, and E20)

Blinking (0.25/0.75) indicates that the lamp illuminates for 0.25 seconds, and then is OFF for 0.75 seconds. Unless otherwise indicated, the blinking is (0.5/0.5).

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 52

Page 53

7. HOW TO PROCESS TUBING

The narrow tubing side is connected by a flare nut, and the wide tubing side is connected by brazing.

7-1. Connecting the Refrigerant Tubing

Use of the Flaring Method

Many of conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts.

Flaring Procedure with a Flare Tool

(1) Cut the copper tube to the required length with a

tube cutter. It is recommended to cut approx. 30 – 50 cm longer than the tubing length you estimate.

(2) Remove burrs at each end of the copper tubing

with a tube reamer or file. This process is important and should be done carefully to make a good flare. Be sure to keep any contaminants (moisture, dirt, metal filings, etc.) from entering the tubing. (Figs. 7-1 and 7-2)

When reaming, hold the tube end downward and be sure that no copper scraps fall into the tube. (Fig. 7-2)

(3) Remove the flare nut from the unit and be sure to

mount it on the copper tube.

(4) Make a flare at the end of the copper tube with a

flare tool.* (Fig. 7-3)

*Use “RIGID

” or equivalent.

A good flare should have the following characteristics:

● inside surface is glossy and smooth

● edge is smooth

● tapered sides are of uniform length

NOTE

Deburring

Before

After

Fig. 7-1

Reamer

Copper tubing

Fig. 7-2

Flare tool

Flare nut

Copper tubing

Fig. 7-3

φ6.35 φ9.52

φ12.7

φ15.88

9.1

13.2

16.6

19.7

– 0.4

Copper tubing (Outer dia.)

Flare size: A (mm)

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 53

Page 54

Fig. 7-7

Caution Before Connecting Tubes Tightly

(1) Apply a sealing cap or water-proof tape to prevent

dust or water from entering the tubes before they are used.

(2) Be sure to apply refrigerant lubricant to the match-

ing surfaces of the flare and union before connecting them together. This is effective for reducing gas leaks. (Fig. 7-4)

(3) For proper connection, align the union tube and

flare tube straight with each other, then screw on the flare nut lightly at first to obtain a smooth match. (Fig. 7-5)

● Adjust the shape of the narrow tube (liquid tube)

using a tube bender at the installation site and connect it to the narrow tubing side (liquid tubing side) valve using a flare.

Cautions During Brazing

● Replace air inside the tube with nitrogen gas to

prevent copper oxide film from forming during the brazing process. (Oxygen, carbon dioxide and Freon are not acceptable.)

● Do not allow the tubing to get too hot during

brazing. The nitrogen gas inside the tubing may overheat, causing refrigerant system valves to become damaged. Therefore allow the tubing to cool when brazing.

● Use a reducing valve for the nitrogen cylinder.

● Do not use agents intended to prevent the for-

mation of oxide film. These agents adversely affect the refrigerant and refrigerant oil, and may cause damage or malfunctions.

7-2. Connecting Tubing Between Indoor and

Outdoor Units

(1) Tightly connect the indoor-side refrigerant tubing

extended from the wall with the outdoor-side tubing.

(2) To fasten the flare nuts, apply specified torque as

at right.

● When removing the flare nuts from the tubing con-

nections, or when tightening them after connecting the tubing, be sure to use 2 monkey wrenches or spanners as shown. (Fig. 7-6) If the flare nuts are over-tightened, the flare may be damaged, which could result in refrigerant leakage and cause injury or asphyxiation to room occupants.

● When removing or tightening the wide tube flare

nut, use 2 monkey wrenches together: one at the wide tube flare nut, and one at part A. (Fig. 7-7)

● For the flare nuts at tubing connections, be sure to

use the flare nuts that were supplied with the unit, or else flare nuts for R410A (type 2). The refrigerant tubing that is used must be of the correct wall thickness as shown in the table at right.

Apply refrigerant lubricant here and here

Fig. 7-4

Flare nut

Union

Fig. 7-5

Fig. 7-6

Indoor unit

Outdoor unit

Spanner

Torque wrench

Tube diameter

6.35 (1/4")

9.52 (3/8")

12.7 (1/2")

15.88 (5/8")

Tightening torque

(approximate)

14 – 18 N

(140 – 180 kgf · cm)

34 – 42 N

(340 – 420 kgf · cm)

49 – 61 N

(490 – 610 kgf

cm)

68 – 82 N

(680 – 820 kgf

cm)

0.8 mm

1.0 mm

Tube thickness

Because the pressure is approximately 1.6 times higher than conventional refrigerant pressure, the use of ordinary flare nuts (type 1) or thin-walled tubes may result in tube rupture, injury, or asphyxiation caused by refrigerant leakage.

● In order to prevent damage to the flare caused by

over-tightening of the flare nuts, use the table above as a guide when tightening.

● When tightening the flare nut on the narrow tube,

use a monkey wrench with a nominal handle length of 200 mm.

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 54

Page 55

Fig. 7-10

Fig. 7-9

Fig. 7-8

Fig. 7-11

● Do not use a spanner to tighten the valve stem

caps. Doing so may damage the valves.

● Depending on the installation conditions, applying

excessive torque may cause the nuts to crack.

Precautions for Packed Valve Operation

● If the packed valve is left for a long time with the

valve stem cap removed, refrigerant will leak from the valve. Therefore, do not leave the valve stem cap removed.

● Use a torque wrench to securely tighten the valve

stem cap.

● Valve stem cap tightening torque:

7-3. Insulating the Refrigerant Tubing

Tubing Insulation

● Thermal insulation must be applied to all unit tub-

ing, including distribution joint (purchased separately).

* For gas tubing, the insulation material must be

heat resistant to 120°C or above. For other tubing, it must be heat resistant to 80°C or above.

Insulation material thickness must be 10 mm or greater.

If the conditions inside the ceiling exceed DB 30°C and RH 70%, increase the thickness of the gas tubing insulation material by 1 step.

Taping the flare nuts

Wind the white insulation tape around the flare nuts at the wide tube connections. Then cover up the tubing connections with the flare insulator, and fill the gap at the union with the supplied black insulation tape. Finally, fasten the insulator at both ends with the supplied vinyl clamps. (Fig. 7-10)

Insulation material

The material used for insulation must have good insulation characteristics, be easy to use, be age resistant, and must not easily absorb moisture.

After a tube has been insulated, never try to bend it into a narrow curve because it can cause the tube to break or crack.

CAUTION

Never grasp the drain or refrigerant connecting outlets when moving the unit.

Unit side insulator

Insulation tape (white)

(supplied)

Sealer (supplied)

Flare insulator (supplied)

Tube insulator (not supplied) Heat resistant 120°C or above

Vin

l clamps (supplied)

Flare nut

The procedure used for installing the insulator for both wide and narrow tubes is the same.

Seal

Flare insulator

Vinyl clamp

Insulation tape

Refrigerant tubing and insulator (not supplied)

Drain pipe and insulator (not supplied)

Drain insulator and clamp. Large (supplied)

Packing clamp. Small hose band (supplied)

Two tubes arranged together

If the exterior of the outdoor unit valves has been finished with a square duct covering, make sure you allow sufficient space to access the valves and to allow the panels to be attached and removed.

Charging port 8 – 10 N • m (80 – 100 kgf • cm)

φ9.52 (Narrow side) 19 – 21 N • m (190 – 210 kgf • cm) φ15.88 (Wide side) 28 – 32 N • m (280 – 320 kgf • cm)

Inter-unit control wiring

Wide tube

Narrow tube

Armoring tape

Insulation

Charging port

Valve stem cap

Valve stem

Main valve

Packed valve

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 55

Page 56

GRFP

Fig. 7-12

Fig. 7-13

7-4. Taping the Tubes

(1) At this time, the refrigerant tubes (and electrical

wiring if local codes permit) should be taped together with armoring tape in 1 bundle. To prevent condensation from overflowing the drain pan, keep the drain hose separate from the refrigerant tubing.

(2) Wrap the armoring tape from the bottom of the

outdoor unit to the top of the tubing where it enters the wall. As you wrap the tubing, overlap half of each previous tape turn.

(3) Clamp the tubing bundle to the wall, using 1

clamp approx. each meter. (Fig. 7-12)

Do not wind the armoring tape too tightly since this will decrease the heat insulation effect. Also ensure that the condensation drain hose splits away from the bundle and drips clear of the unit and the tubing.

7-5. Finishing the Installation

After finishing insulating and taping over the tubing, use sealing putty to seal off the hole in the wall to prevent rain and draft from entering. (Fig. 7-13)

NOTE

Inter-unit control wiring

Wide tube

Narrow tube

Armoring tape

Insulation

Tubin

Apply putty here

04-393 DC INV Tech p 45-63 12/13/04 11:34 AM Page 56

Page 57

GRFP

Fig. 8-1

Fig. 8-2

Fig. 8-3

8. LEAK TEST, EVACUATION AND ADDITIONAL REFRIGERANT CHARGE

● Perform an air-tightness test for this package A/C.

Check that there is no leakage from any of the connections. Air and moisture in the refrigerant system may have undesirable effects as indicated below.

● pressure in the system rises

● operating current rises

● cooling (or heating) efficiency drops

● moisture in the refrigerant circuit may freeze and

block capillary tubing

● water may lead to corrosion of parts in the refriger-

ant system

Therefore, the indoor unit and tubing between the indoor and outdoor unit must be leak tested and evacuated to remove any noncondensables and moisture from the system.

■ Air Purging with a Vacuum Pump (for Test Run)

Preparation

Check that each tube (both narrow and wide tubes) between the indoor and outdoor units has been properly connected and all wiring for the test run has been completed. Remove the valve caps from both the wide and narrow service valves on the outdoor unit. Note that both narrow and wide tube service valves on the outdoor unit are kept closed at this stage.

● The refrigerant charge at the time of shipment is

only guaranteed sufficient for a tubing length of up to 30 m. The tubing may exceed this length, up to the maximum permitted length; however, an additional charge is necessary for the amount that the tubing exceeds 30 m. (No additional refrigerating machine oil is needed.)

8-1. Leak Test

(1) With the service valves on the outdoor unit closed,

remove the 1/4 in. flare nut and its bonnet on the wide tube service valve. (Save for reuse.)

(2) Attach a manifold valve (with pressure gauges)

and dry nitrogen gas cylinder to this service port with charge hoses.

Manifold gauge

Outlet Inlet

Vacuum pump

Manifold valve

Pressure gauge

Lo Hi

Charge hose

Outdoor unit Narrow tube

Wide tube

Nitrogen gas cylinder (In vertical standing position)

Open

Cylinder valve

CAUTION

Use a manifold valve for air purging. If it is not available, use a stop valve for this purpose. The “Hi” knob of the manifold valve must always be kept closed.

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GRFP

Fig. 8-4

(3) Pressurize the system up to 4.15 MPa (42

kgf/cm2G) with dry nitrogen gas and close the cylinder valve when the gauge reading reaches 4.15 MPa (42 kgf/cm2G). Then, test for leaks with liquid soap.

(4) Do a leak test of all joints of the tubing (both

indoor and outdoor) and both wide and narrow service valves. Bubbles indicate a leak. Wipe off the soap with a clean cloth after a leak test.

(5) After the system is found to be free of leaks,

relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder. When the system pressure is reduced to normal, disconnect the hose from the cylinder.

8-2. Evacuation

Be sure to use a vacuum pump that includes a function for prevention of back-flow, in order to prevent back-flow of pump oil into the unit tubing when the pump is stopped.

● Perform vacuuming of the indoor unit and tubing.

Connect the vacuum pump to the wide tube valve and apply vacuum at a pressure of –755 mmHg (5 torr) or below. Continue vacuum application for a minimum of 1 hour after the pressure reaches –755 mmHg.)

(1) Attach the charge hose end described in the pre-

ceding steps to the vacuum pump to evacuate the tubing and indoor unit. Confirm that the “Lo” knob of the manifold valve is open. Then, run the vacuum pump.

(2) When the desired vacuum is reached, close the

“Lo” knob of the manifold valve and turn off the vacuum pump. Confirm that the gauge pressure is under 667 Pa (–755 mmHg, 5 Torr) after 4 to 5 minutes of vacuum pump operation.

Manifold valve

Pressure gauge

Vacuum pump

Outdoor unit Narrow tube

Wide tube

Open

CAUTION

To avoid nitrogen entering the refrigerant system in a liquid state, the top of the cylinder must be higher than the bottom when you pressurize the system. Usually, the cylinder is used in a vertical standing position.

CAUTION

Use a cylinder specifically designed for use with R410A.

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GRFP

Fig. 8-5

Fig. 8-6

8-3. Charging Additional Refrigerant

● Charging additional refrigerant (calculated from the

narrow tube length as shown in P. 12, Amount of additional refrigerant charge) using the narrow tube service valve. (Fig. 8-5)

● Use a balance to measure the refrigerant accurately.

● If the additional refrigerant charge amount cannot

be charged at once, charge the remaining refrigerant in liquid form by using the wide tube service valve with the system in Cooling mode at the time of test run. (Fig. 8-6)

* If an additional refrigerant charge has been per-

formed, list the refrigerant tubing length and amount of additional refrigerant charge on the product label (inside the panel).

8-4. Finishing the Job

(1) With a hex wrench, turn the narrow tube service

valve stem counter-clockwise to fully open the valve.

(2) Turn the wide tube service valve stem counter-

clockwise to fully open the valve.

(3) Loosen the charge hose connected to the wide

tube service port (5/16 in.) slightly to release the pressure, then remove the hose.

(4) Replace the 5/16 in. flare nut and its bonnet on the

wide tube service port and fasten the flare nut securely with an adjustable wrench or box wrench. This process is very important to prevent gas from leaking from the system.

(5) Replace the valve caps at both wide and narrow

service valves and fasten them securely.

CAUTION

To avoid gas from leaking when removing the charge hose, make sure the stem of the wide tube is turned all the way out (“BACK SEAT” position.

Valve

Liquid

Manifold valve

Pressure gauge

Lo Hi

Outdoor unit Narrow tube

Wide tube

R410A

Outdoor unit Narrow tube

Wide tube

Open

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CAFP

9. HOW TO INSTALL THE CEILING PANEL

■ 4-Way Air Discharge Semi-Concealed Type (CAFP Type)

Checking the unit position

(1) Check that the ceiling hole is within this range:

860 × 860 to 910 × 910 mm

(2) Use the full-scale installation diagram (from the

packaging) that was supplied with the unit to determine the positioning of the unit on the ceiling surface. If the positions of the ceiling surface and unit do not match, air leakage, water leakage, flap operation failure, or other problems may result.

CAUTION

● Never place the panel

face-down. Either hang it vertically or place it on top of a projecting object. Placing it facedown will damage the surface.

● Do not touch the flap or

apply force to it. (This may cause flap malfunction.)

must be within the range of 12 – 17 mm.

If not within this range, malfunction or other trouble may result.

Ceiling side

Main unit

Ceiling opening dimension

Fig. 9-1

Wing

Fig. 9-2

Fig. 9-3

Fig. 9-5

9-1. Before Installing the Ceiling Panel

(1) Remove the air-intake grille and air filter from the

ceiling panel. (Figs. 9-3, 9-4 and 9-5)

a) Remove the 2 screws on the latch of the air-

intake grille. (Fig. 9-3)

b) Slide the air-intake grille catches in the direc-

tion shown by the arrows to open the grille. (Fig. 9-4)

c) With the air-intake grille opened, remove the

grille hinge from the ceiling panel by sliding it in the direction shown by the arrow . (Fig. 9-5)

(2) Removing the corner cover

a) Slide the corner cover to the direction shown

by the arrow to remove the corner cover. (Fig. 9-6).

Corner cover

Ceiling panel

Strap

Push

Corner cover

Fig. 9-6

Air-intake grille

Ceiling panel

Air-intake grille hinge

Fig. 9-4

Latch

Screw

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CAFP

CAUTION

9-2. Installing the Ceiling Panel

The power must be turned ON in order to change the flap angle. (Do not attempt to move the flap by hand. Doing so may damage the flap.)

(1) Insert the temporary fasteners (stainless steel) on

the inside of the ceiling panel into the square holes on the unit to temporarily fasten the ceiling panel in place. (Fig. 9-7)

● The ceiling panel must be installed in the correct

direction relative to the unit. Align the REF. PIPE and DRAIN marks on the ceiling panel corner with the correct positions on the unit.

● To remove the ceiling panel, support the ceiling

panel while pressing the temporary fasteners toward the outside. (Fig. 9-7)

(2) Align the panel installation holes and the unit

screw holes.

(3) Tighten the supplied washer head screws at the 4

panel installation locations so that the panel is attached tightly to the unit. (Fig. 9-8)

(4) Check that the panel is attached tightly to the ceil-

ing.

● At this time, make sure that there are no gaps

between the unit and the ceiling panel, or between the ceiling panel and the ceiling surface. (Fig. 9-9)

Square hole in unit

Temporary fastener

Push when you remove

Temporary fastener

Fig. 9-7

Drain tubing corner

Refrigerant tubing corner

Panel installation hole (4 locations)

Ceiling panel

Washer head screws

DRAIN mark

REF. PIPE mark

Fig. 9-8

Do not allow

gaps

Ceilin

panel

Main unit

Ceiling surface

Fig. 9-9

Insert a wrench or other tool into the corner cover installation hole and make fine adjustments to the unit nut.

Air leakage

Air leakage from ceiling surface

Staining

Condensation, water leakage

Adjust so that there are no gaps.

Fig. 9-10

Fig. 9-11

● If there is a gap between the panel and the ceiling,

leave the ceiling panel attached and make fine adjustments to the installation height of the unit to eliminate the gap with the ceiling. (Fig. 9-10)

● If the screws are not sufficiently

tightened, trouble such as that shown in the figure below may occur. Be sure to tighten the screws securely.

● If a gap remains between the

ceiling surface and the ceiling panel even after the screws are tightened, adjust the height of the unit again.

The height of the unit can be adjusted from the ceiling panel corner hole, with the ceiling panel attached, to an extent that does not affect the unit levelness, the drain hose, or other elements.

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CAFP

9-3. Wiring the Ceiling Panel

(1) Open the cover of the electrical component box.

(2) Connect the 7P wiring connector (red) from the

ceiling panel to the connector in the unit electrical component box.

● If the connectors are not connected, Auto flap will

not operate. Be sure to connect them securely.

● Check that the wiring connector is not caught

between the electrical component box and the cover.

● Check that the wiring connector is not caught

between the unit and the ceiling panel.

9-4. How to Attach the Corner & Air Intake Grille

Attaching the corner cover and air-intake grille

A. Attaching the corner cover

(1) Check that the safety cord from the corner cover is

fastened to the ceiling panel pin, as shown in the figure.

(2) Use the supplied screws to attach the corner

cover to the ceiling panel.

B. Attaching the air-intake grille

● To install the air-intake grille, follow the steps for

Removing the grille in the reverse order. By rotating the air-intake grille, it is possible to attach the grille onto the ceiling panel from any of 4 directions. Coordinate the directions of the air-intake grilles when installing multiple units, and change the directions according to customer requests.

● When attaching the air-intake grille, be careful

that the flap lead wire does not become caught.

● Be sure to attach the safety cord to the ceiling

panel unit as shown in the figure at right. This keeps the air intake grille from accidentally dropping

(Direction that the unit faces has been changed to facilitate explanation.)

Ceiling panel wiring connector

Ceiling panel side

Screws (3 locations)

Mains side

Clamp

Electrical component box cover

* Pass the wiring connector through the clamp to fasten it in place,

as shown in the figure.

Place the corner cover so that the 3 tabs fit into the holes in the ceiling panel. Then fasten it in place with the supplied screws.

● With this ceiling panel, the directions of the air-intake grille lattices when installing multiple units, and the position

of the label showing the company name on the corner panel, can be changed according to customer requests, as shown in the figure below. However, the optional wireless receiver kit can only be installed at the refrigeranttubing corner of the ceiling unit.

Unit electrical component box

Unit drain hose side

Unit refrigerant tube side

Optional wireless receiver kit * Can only be installed in this position.

Can be installed rotated 90˚

Locations of the air-intake grille catches at the time the product is shipped. * The grille can be installed with these

catches facing in any of 4 directions.

Fig. 9-12

Fig. 9-13

Hole for ceiling panel hook

Hook that prevents the

rille from droppin

Fig. 9-14

Fig. 9-15

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CAFP

9-5. Checking After Installation

● Check that there are no gaps between the unit and

the ceiling panel, or between the ceiling panel and the ceiling surface. Gaps may cause water leakage and condensation.

● Check that the wiring is securely connected.

If it is not securely connected, the auto flap will not operate. (“P09” is displayed on the remote controller.) In addition, water leakage and condensation may occur.

9-6. When Removing the Ceiling Panel for

Servicing

When removing the ceiling panel for servicing, remove the air-intake grille and air filter, disconnect the wiring connector inside the electrical component box, and then remove the 4 mounting screws.

9-7. Adjusting the Auto Flap

The air-direction louver on the ceiling panel outlet can be adjusted as follows.

● Adjust the louver to the desired angle using the

remote controller. The louver also has an automatic air-sweeping mechanism.

● Never attempt to move the louver by hand.

● Proper air flow depends on the location of the air

conditioner, the layout of the room and furniture, etc. If cooling or heating seems inadequate, try changing the direction of the air flow.

NOTE

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Page 64

10. TEST RUN

10-1. Preparing for Test Run

● Before attempting to start the air conditioner,

check the following:

(1) All loose matter is removed from the cabinet espe-

cially steel filings, bits of wire, and clips.

(2) The control wiring is correctly connected and all

electrical connections are tight.

(3) The protective spacers for the compressor used

for transportation have been removed. If not, remove them now.

(4) The transportation pads for the indoor fan have

been removed. If not, remove them now.

(5) The power has been supplied to the unit for at

least 5 hours before starting the compressor. The bottom of the compressor should be warm to the touch and the crankcase heater around the feet of the compressor should be hot to the touch. (Fig. 10-1)

(6) Both the wide and narrow tube service valves are

open. If not, open them now. (Fig. 10-2)

(7) Request that the customer be present for the trial

run. Explain the contents of the instruction manual, then have the customer actually operate the system.

(8) Be sure to give the instruction manual and warran-

ty certificate to the customer.

(9) When replacing the control PCB, be sure to make

all the same settings on the new PCB as were in use before replacement. The existing EEPROM is not changed, and is connected to the new control PCB.

Fig. 10-1

Fig. 10-2

Power mains switch

(Power must be turned ON at least 5 hours before attempting test run)

Narrow tube

Wide tube

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■ CAFP, SPAFP, DSAFP Type

10-2. Caution

● This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor

unit, and also in a system where 1 outdoor unit is connected to multiple indoor units (maximum 4).

* If multiple indoor units are used, also refer to 10-8. System Control.

● The indoor and outdoor unit control PCBs utilize a semiconductor memory element (EEPROM). The set-

tings required for operation were made at the time of shipment. Only the correct combinations of indoor and outdoor units can be used.

● This test run manual describes primarily the procedure when using the wired remote controller.

10-3. Test Run Procedure

Recheck the items to check before the test run.

Indicate (mark) the combination number.

Turn ON the indoor and outdoor power.

Set the remote controller to “test run.”

Turn ON the indoor and outdoor power.

Return the remote controller to normal control.

YES

Automatic

address

(See 10-4)

(See 10-8-1 ~ 5)

(See 10-8-3)

(See 10-8-4)

(See 10-8-5)

(See 10-5)

(* 1)

Check the combination (wiring) of indoor and outdoor units.

Is system “single-type”?

(1 indoor unit is connected to 1 outdoor

unit and remote controller)

Is group control with

multiple outdoor units used?

Can

operation be

started?

Setting the Outdoor Unit System Address

Automatic Address Setting

Set the outdoor unit system address.

Use the remote controller to perform automatic address setting.

Refer to “Table of Self-Diagnostic Functions” to check the system. In addition, refer to 10-8-1 ~ 5 and correct any items that need to be corrected.

Note: Check the indoor-side drainage. (*1) Required for simultaneous-operation multi systems and for group control.

(Automatic Address)

Fig. 10-3

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10-4. Items to Check Before the Test Run

(1) Turn the remote power switch ON at least 12 hours in advance in order to energize the crank case heater.

(2) Fully open the closed valves on the narrow-tube and wide-tube sides.

10-5. Test Run Using the Remote Controller

(1) Press and hold the remote controller button for 4 seconds or longer. Then press the button.

● “TEST” appears in the LCD display during the test run.

● Temperature control is not possible when test run mode is engaged.

(This mode places a large load on the devices. Use it only when performing the test run.)

(2) Use either Heating or Cooling mode to perform the test run.

Note: The outdoor unit will not operate for approximately 3 minutes after the power is turned ON or after it stops

operating.

(3) If normal operation is not possible, a code appears on the remote controller LCD display.

Refer to the “Table of Self-Diagnostic Functions and Corrections” on the next page, and correct the problem.

(4) After the test run is completed, press the button again. Check that “TEST” disappears from the LCD display.

(This remote controller includes a function that cancels test run mode after a 60-minute timer has elapsed, in order to prevent continuous test run operation.)

(5) For the test run of an inverter outdoor unit, operate the compressors for a minimum of 10 minutes (in order to

check for open phase).

* When performing a test run using a wired remote controller, operation is possible without attaching the cas-

sette-type ceiling panel. (“P09” will not be displayed.)

10-6. Precautions

● Request that the customer be present when the test run is performed. At this time, explain the operation manual

and have the customer perform the actual steps.

● Be sure to pass the manuals and warranty certificate to the customer.

● Check that the AC 220 – 240 V power is not connected to the inter-unit control wiring connector terminal.

* If AC 220 – 240 V is accidentally applied, the indoor or outdoor unit control PCB fuse (0.5 A for both indoor

and outdoor units) will blow in order to protect the PCB. Correct the wiring connections, then disconnect the 2P connectors (indoor: blue, DC) (outdoor: blue, serial 1) that are connected to the PCB, and replace them with 2P connectors (indoor: brown, EMG) (outdoor: brown, serial 2). (Refer to the figure below.) If operation is still not possible after changing the brown connectors, try cutting the varistor (black) (both indoor and outdoor). (Be sure to turn the power OFF before performing this work.)

Indoor unit control PCB

Outdoor unit control PCB

Varistor (black)

Fuse 0.5A

SG41

Fuse

VA002

2P connector (brown)

2P connector (blue)

CHK (2P plug)

Serial 1 (blue) connector

0.5A

Terminal plug (black)

3 ~ 5 HP

Serial 2 (brown) connector

Fig. 10-4

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Page 67

Wired remote

controller display

Cause

Correction

Nothing is

displayed

Nothing is

displayed

E 0 1

displayed

E 0 2

displayed

E 0 9

displayed

E 1 4

displayed

E 0 4

displayed

E 0 5

displayed

E 1 5

displayed

E 1 6

displayed

E 2 0

displayed

P 0 5

displayed

L 0 2

displayed

L 1 3

displayed

P 0 9

displayed

L 0 7

displayed

P 1 2

displayed

Indoor unit

receiver lamp

Operating lamp

is blinking.

Standby lamp

is blinking.

Both the Operation

lamp and Standby

lamp are blinking

together.

Operation lamp and

Standby lamp are

blinking alternately.

Timer lamp and

Standby lamp are

blinking alternately.

1:1 connection (single type)

●

Remote controller is not connected correctly.

●

Indoor unit power is not ON.

●

Automatic address setting has not been

completed.

●

Inter-unit control wiring is cut or is not

connected correctly.

●

Remote controller is not connected correctly

(remote controller receiving failure).

●

Remote controller is not connected correctly

(failure in transmission from remote controller

to indoor unit).

●

Indoor-outdoor inter-unit wiring is not

connected correctly.

●

Indoor unit capacity is too low.

●

Indoor unit capacity is too high.

●

No serial signal is being received at all from

the indoor units.

●

Reversed phase or open phase in the outdoor

unit 3-phase power

●

Insufficient gas

●

Indoor-outdoor unit type mismatch

●

The indoor unit ceiling panel connector is not

connected correctly.

●

Indoor unit DC fan trouble

●

Remote controller is not connected with

indoor unit correctly

●

Indoor unit power is not ON.

●

Automatic address setting has not been

completed.

●

Inter-unit control wiring is cut or is not

connected correctly.

●

Remote controller is not connected with

indoor unit correctly

●

Remote controller is not connected with

indoor unit correctly

●

Same as in the left

●

Indoor-outdoor inter-unit wiring is cut or

is not connected correctly.

●

Same as in the left

●

Reversed phase or open phase in the 3-

phase power at one of the outdoor units

in the group

●

Same as in the left

●

Same as in the left

●

Same as in the left

Simultaneous-operation multi system

(flexible combination)

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Same as in the left

●

Remote controller crossover wiring is cut

or is not connected correctly.

●

Indoor unit ceiling panel connector is not

connected correctly.

●

Indoor unit fan trouble

●

Remote controller crossover wiring is

connected to the indoor unit, however it is set

for individual operation.

Connect the remote controller correctly.

Turn ON the indoor unit power.

●

2 remote controllers are

set as the main remote

controller.

Control by main-sub

remote controllers

Check the remote controller and inter-unit

control wiring.

Perform automatic address setting

(See 10-8-4).

Connect the remote controller correctly.

Refer to 10-8-6 Main-sub remote Control,

and make the correct settings.

Check the remote controller crossover wiring.

Perform automatic address setting again.

Connect the wiring correctly.

Refer to 10-8 System Control, and make the

correct settings.

Check that the total capacities of the indoor

and outdoor units are appropriate.

Check whether the fan holder is loose.

Check the wiring between the DC fan and

the PCB.

Check that the indoor unit power is ON, and that

the inter-unit control wiring is connected correctly.

Reverse 2 phases of the outdoor unit 3-phase

power and connect them correctly.

Check that the indoor and outdoor unit types

are correct.

Perform automatic address setting (See 10-8).

Connect the indoor unit ceiling panel

connector correctly.

●

DC fan trouble at one of the indoor units

in the group

●

Ceiling panel connector at one of the

indoor units in the group is not

connected correctly.

Group connection

●

Reversed phase or open phase in

the outdoor unit 3-phase power

10-7. Table of Self-Diagnostic Functions and Corrections (CAFP, SPAFP, DSAFP, MAFP Type)

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10-8. System Control

System control refers to connecting link wiring for control, for simultaneous-operation multi systems, group control, and main-sub remote controller control.

10-8-1. Basic wiring diagram 1

Single type and simultaneous-operation multi system

● Simultaneous-operation multi system

● Be careful to avoid miswiring when connecting the wires. (Miswiring will damage the units.)

1 2

L N

U1 U2

1 2

L N

1 2

L N

Remote controller crossover wiring for group control

System address rotary switch (Set to “0” at the time of shipment.)

Inter-unit control wiring

Outdoor unit

Indoor

unit

Indoor

unit

Indoor

unit

For a simultaneous-operation multi system, a maximum of 4 indoor units can be connected to 1 outdoor unit.

Ground

Wired remote controller

Remote controller wiring

WHT

BLK

(Optional)

Ground

Leakage breaker

Fig. 10-5

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Page 69

10-8-2. Basic wiring diagram 2

Group control (when a central control device is not used)

● Simultaneous-operation multi system

Up to 4 (Double-Twin) indoor units can be connected to 1 outdoor unit for operation. (However, coordinate the outdoor unit capacity and the total capacity of the indoor units.) (It is not possible to connect individual remote controllers for independent operation.) A maximum of 8 indoor units can be connected to 1 remote controller. When 2 or 3 indoor units are connected to each outdoor unit in the refrigerant system, set the system address (refrigerant tubing system address) before turning on the remote power switch. (Refer to 10-8-3. Setting the outdoor unit system addresses.) (Set using the system address rotary switch on the outdoor unit control PCB.)

Fig. 10-6

1 2

L N

TNLNL

L N

1 2

Outdoor unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Outdoor unit

Ground

Ground Ground Ground

(Optional)

Wired remote controller

Remote controller wiring

Remote controller crossover wiring for group control

System address rotary switch (Change the setting.)

Indoor power crossover wiring – up to 16 units (no-heater units only)

Inter-unit control wiring

WHT

BLK

Leakage breaker

(Wiring procedure)

(1) Connect the remote controller to the indoor unit remote controller wiring terminal plate (1, 2). (Remote controller

wiring)

(2) Connect the indoor units (U1, U2) and the outdoor units (1, 2). Connect the other outdoor units and indoor units

(with different refrigerant systems) in the same way. (Inter-unit control wiring) Connect the remote controller crossover wiring to the indoor units (U1, U2) for each refrigerant system. (Interunit control wiring)

(3) Connect the remote controller crossover wiring (2 wires) from the remote controller wiring terminal plate (1, 2)

on the indoor unit (unit where the remote controller is connected) to the remote controller terminal plates (1, 2) on the other indoor units. (Remote controller crossover wiring)

(4) Turn ON both the indoor and outdoor unit power and perform automatic address setting from the remote con-

troller. (For the automatic address setting procedure, refer to 10-8-4.)

* Models with auxiliary heaters cannot be used for crossover wiring of the indoor unit power wires. (Use a pull box

to divide the wiring.) Be sure to use the indoor unit temperature sensor (body sensor) when using this control. (Status at shipment.)

NOTE

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Page 70

10-8-3. Setting the outdoor unit system addresses

For basic wiring diagram 2 (Set the system addresses: 1, 2, 3...)

System address rotary switch (Set to “0” at time of shipment)

System address rotary switch

System address

DIP switch

OFF

10s 20s

3 ~ 5H P

Outdoor unit control PCB

Fig. 10-7

System address No.

System address 10s digit

(2P DIP switch)

System address 1s place

(Rotary switch)

0 Automatic address

(Setting at shipment = “0”)

1 (If outdoor unit is No. 1)

“0” setting

Both OFF

10s digit ON

20s digit ON

10s digit and 20s digit ON

“1” setting

“2” setting

“1” setting

“0” setting

2 (If outdoor unit is No. 2)

11 (If outdoor unit is No. 11)

21 (If outdoor unit is No. 21)

(If outdoor unit is No. 30)

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

10-8-4. Automatic address setting using the remote controller

When the outdoor unit shown in 10-8-2. Basic wiring diagram 2 is used for group control of multiple units , use

the remote controller to perform automatic address setting. (During automatic address setting, “SETTING” blinks on the remote controller display.)

● Press the remote controller timer time button and button simultaneously. (Hold for 4 seconds or longer.)

Then press the button. (Item code “AA” appears: All systems automatic address setting.) (Automatic address setting is performed in sequence for all outdoor units from No. 1 to No. 30. When automatic address setting is completed, the units return to normal stopped status.)

● To select each refrigerant system individually and perform automatic address setting, press the remote controller

timer time button and button simultaneously. (Hold for 4 seconds or longer.) Then press either the temperature setting or button. (Item code “A1” appears: Individual system automatic address setting) Use either the or button to select the outdoor unit to perform automatic address setting for. (R.C.1 is displayed.) Then press the button. (Automatic address setting is performed for refrigerant system 1.) When automatic address setting for system 1 is completed, the system returns to normal stopped status. Again press the remote controller timer time button and the button simultaneously. Then in the same way as above (use the button to display “R.C.2”), select the next system and perform automatic address setting.

System address rotary switch

System address 10s digit and 20s digit

DIP switch

Automatic address button (black)

Terminal plug (black)

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10-8-5. Indicating (marking) the indoor and outdoor unit combination number

Indicate (mark) the number after automatic address setting is completed.

(1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensure that

the indoor and outdoor unit numbers correspond to the system address number on the outdoor unit control PCB, and use a magic marker or similar means which cannot be easily erased to indicate the numbers in an easily visible location on the indoor units (near the indoor unit nameplates).

Example: (Outdoor) 1 - (Indoor) 1, 2... (Outdoor) 2 - (Indoor) 1, 2...

(2) These numbers will be needed for maintenance. Be sure to indicate them.

* Use the remote controller to check the addresses of the indoor units. Press and hold the button and

button for 4 seconds or longer (simple settings mode). Then press the button and select the indoor

address. (Each time the button is pressed, the address changes as follows: 1-1, 1-2, ... 2-1, 2-2, ....) The

indoor unit fan operates only at the selected indoor unit. Confirm that correct fan is operating, and indicate address on the indoor unit.

Press the button again to return to the normal remote controller mode. For details, refer to the separate handbook.

10-8-6. Main-sub remote controller control

Control using 2 remote controller switches

Main-sub remote controller control refers to the use of 2 remote controllers to control 1 or multiple indoor units. (A maximum of 2 remote controllers can be connected.)

● Connecting 2 remote controllers to

control 1 indoor unit

● Connecting 2 remote controllers to control a

simultaneous-operation multi system

1 2

U1U2

1 2

U1U2

1 2

U1U2

1 2

U1U2

1 2

Remote controller wiring

Optional

Remote controller switch (sub)

Remote controller switch (main)

Indoor unit

Indoor unit 1

Outdoor unit

Indoor unit 2 Indoor unit 3

Outdoor unit

Ground

Ground Ground

Ground

Remote controller switch (sub)

Remote controller crossover wiring

Inter-unit control wiring

for remote controller wiring

Terminal plate

for remote

controller wiring

Terminal plate

for remote

controller wiring

(Setting procedure)

(1) Set 1 of the 2 connected remote controllers as the

main remote controller.

(2) On the other remote controller (sub remote con-

troller), change the remote controller address connector on the reverse side of the remote controller switch PCB from the Main position to the Sub position. The remote controller will now function as the sub remote controller. The sub remote controller will also operate if connected to indoor unit 2.

Fig. 10-8

TIMER TMNL.

RCU

TMNL.

RCU.ADR

RCU.Main

RCU.Sub

RCU.CK

To Service Technicians

To display the sensor temperature:

WARNING

To avoid an electric shock hazard, DO NOT touch any terminal on the Printed Circuit Board with a metal rod, a screwdriver edge or bare hand when power is supplied.

To display the trouble history: Press both and buttons on the remote controller for more than 4 seconds together. Change the alarm message: / (SET TEMP) buttons CODE NO.

Press the button to finish service mode.

On the remote controller, press + + at the same time for more than 4 seconds. Set CODE No. with / (SET TEMP) button.

Set DATA from to with / (TIMER) button. Press Finally, Press

(New) (Old)

Changing method for room temperature sensor (from Indoor unit to RCU)

Remote Controller (Sub)

Remote controller address connector

Remote Controller (Main)

Checking remote controller

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■ MAFP Type 10-9. Caution

● This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor

unit, and also in a system where 1 outdoor unit is connected to multiple indoor units (maximum 4).

* If multiple indoor units are used, also refer to 10-16. System Control.

● The indoor and outdoor unit control PCBs utilize a semiconductor memory element (EEPROM). The set-

tings required for operation were made at the time of shipment. Only the correct combinations of indoor and outdoor units can be used.

10-10. Test Run Procedure

Recheck the items to check before the test run.

Turn ON the indoor and outdoor power.

Set the indoor unit control switch to “TEST.”

Turn ON the indoor and outdoor power.

Slide the indoor unit control switch back to “ON.”

YES

(See 10-13-3)

(See 10-15)

(See 10-11)

(See 10-16)

Check the combination (wiring) of indoor and outdoor units.

Is system “single-type”?

(1 indoor unit is connected

to 1 outdoor unit)

Are multiple outdoor units used?

Can

operation be

started?

Refer to “Table of Self-Diagnostic Functions” to check the system. In addition, refer to 10-16 and correct any items that need to be corrected.

Note: Check the indoor-side drainage.

Confirm wiring is done in accordance with Fig. 2,

“Basic Wiring.”

(Automatic Address Setting)

(See 10-16-2) In case of group control

Set the automatic address setting from outside unit.

(See 10-16-3 ~ 10-16-6)

How to Set Automatic Address

(Automatic Address setting)

Fig. 10-9

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10-11. Items to Check Before the Test Run

(1) Turn the remote power switch ON at least 12 hours in advance in order to energize the crank case heater.

(2) Fully open the closed valves on the narrow-tube and wide-tube sides.

(3) Set the slide switch inside the wireless remote controller cover to match the unit type. After changing the set-

ting, press the ACL button.

10-12. Preparation for Test Run

10-12-1. Switching the temperature sensor

● Temperature sensors are contained in the indoor unit and wireless remote controller. One or the other of the

temperature sensors is used for operation.

● If (BODY SENSOR) appears on the LCD display of the wireless remote controller, then the indoor unit body

sensor is used for operation.

To switch to the remote controller sensor, open the remote controller cover and press the SENSOR button once. The (BODY SENSOR) display disappears and the remote control sensor is used for operation.

● Even if the remote controller sensor is selected, the sensor will be automatically switched to the indoor unit body

sensor if no temperature signal has been received from the remote controller for 10 minutes. Install the remote controller in a position where the signal can be reliably received by the unit.

● When group control is engaged, be sure to use the body sensor.

10-12-2. Using the remote controller

● Face the remote controller toward the receiver (on the

main unit).

● The signal can be received up to a distance of approxi-

mately 8 m. Use this distance as a guide. This distance may vary somewhat depending on the battery capacity and other factors.

● Be sure that there are no objects between the remote

controller and the receiver which may block the signal.

● The unit beeps when a signal is received correctly.

(For operation start only, the unit beeps twice.)

● Do not drop, throw, or wash the remote controller.

● Do not place the remote controller in locations exposed to direct sunlight or nearby a stove.

NOTE

S: Flap type with limit switch (4-way, ceiling-mounted, wall-mounted) K: Swing-only type (floor-mounted) installed N: No-flap type (built-in)

Check that sliding switch 1 is set to “S.” Set sliding switch 2 to match

the unit type.

A: Heat-pump type (H: Heat pump with no auto heat/cool) C: Cool-only type

Sliding switch 1

SKN

AHC AHC

ACL (ALL CLEAR) button

Sensor button

Sliding switch 2

OPERATION TIMER STANDBY

Receiver

Fig. 10-10

Fig. 10-11

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10-13. Test Run

Using the control unit

(1) Change the indoor control unit switch from “ON” → “TEST”.

(The outdoor unit will not operate for 3 minutes after the power is turned ON and after operation is stopped.)

(2) All the indicator lamps blink while the test run is in progress.

(3) Temperature control is not possible during the test run.

(4) If correct operation is not possible, the trouble will be indicated by the

indicator lamps. Refer to “Table of Self Diagnostic Functions and Corrections” and correct the problem.

(5) After the test is completed, change the control unit switch from “TEST” → “ON”. Confirm that the indicator

lamps have stopped blinking. (A function is included which cancels the test run after a 60-minute timer has elapsed, in order to prevent continuous test run operation.)

● This mode places a large load on the devices. Use it only for performing test runs.

● A test run is not possible if the power is turned ON with the switch in the TEST position.

After the power has been turned ON, change the switch once to ON or OFF, then switch it back to the TEST position.

10-14. Precautions

● Request that the customer be present when the test run is performed. At this time, explain the operation manual

and have the customer perform the actual steps.

● Be sure to pass the manuals and warranty certificate to the customer.

● Check that the AC 220 – 240 V wiring is not connected to the inter-unit control wiring connector terminal.

* If AC 220 – 240 V is accidentally applied, the indoor or outdoor unit control PCB fuse (0.5 A for both indoor and

outdoor units) will blow in order to protect the PCB. Correct the wiring connections, then disconnect the 2P connectors (indoor: blue) (outdoor: blue, serial 1) that are connected to the PCB, and replace them with 2P connectors (indoor: brown) (outdoor: brown, serial 2). (Refer to the figure below.) If operation is still not possible after changing the brown connectors, try cutting the varistor (black) (both indoor and outdoor). (Be sure to turn the power OFF before performing this work.)

NOTE

2 HP

2P connector (blue)

Fuse (0.5A)

CHK (2P plug)

SW103

ON OFF TEST

SW103

TEST ON OFF

2P connector (brown)

Varistor (black)

VA002

Varistor (black) VA002

Indoor unit control PCB

3 HP

Indoor unit control PCB

Fig. 10-12

Outdoor unit control PCB

Varistor (black)

Fuse

VA002

Serial 1 (blue) connector

0.5A

Terminal plug (black)

3 ~ 5 HP

Serial 2 (brown) connector

ON OFF TEST

Indoor control unit switch

OPERATION

TIMER STANDBY

Indicator lamps

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10-15. Table of Self-Diagnostic Functions and Corrections

Wired remote

controller display

(Field supply)

Cause

Correction

Nothing is displayed

Operating lamp is blinking.

Standby lamp is blinking.

Operation lamp and Standby lamp are blinking alternately.

Both the Operation lamp and Standby lamp are blinking together.

Indoor unit

receiver lamp

E14 displayed

E04

displayed

E06

displayed

E15

displayed

1:1 connection

(Single type)

Group connection

(Simultaneous multi system)

• Set the indoor operation switch ON.

• Turn ON the indoor unit power.

• Check the inter-unit control wiring.

• Perform automatic address setting

(See 10-16).

• Check the remote controller crossover wiring.

• Perform automatic address setting again.

• Connect the wiring correctly.

E01 displayed

• Refer to 10-16 System Control, and make the correct settings.

• Check that the total capacities of the indoor and outdoor units are appropriate.

• Connect the units correctly.

• Perform automatic address setting

(See 10-16).

• Reverse 2 phases of the outdoor unit

3-phase power and connect them correctly.

• Same as in the left.

•

Remote controller crossover wiring is cut or is not connected

• Same as in the left.

• Inter-unit control

wiring is cut or is not connected

• Same as in the left.

• Outdoor unit

address is duplicated

Remote controller crossover wiring is connected to the indoor unit, however, it is set for individual operation.

• Same as in the left.

• Indoor operation switch is OFF.

• Indoor unit power is not ON.

• Automatic address setting has not

been completed.

• Inter-unit control wiring is cut or is not connected correctly.

• Indoor-outdoor inter-unit wiring is not connected correctly.

• Indoor unit capacity is too low.

• Indoor unit capacity is too high.

• Indoor-outdoor unit type mismatch.

• Indoor-outdoor units are not setting

correctly.

• Reversed phase or open phase in the outdoor unit 3-phase power

E16

displayed

P05

displayed

L02

displayed

L13

displayed

L04

displayed

L07

displayed

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N 1 2

1 2

L N

LN 12

Ground

Wireless remote controller

Connection to lead wire (white/black)

For group control (wiring locally supplied)

Wired remote

controller

white black

(Field

supply)

Outdoor unit

Inter-unit control wiring

Wall-

mounted

type

Indoor

unit No. 1

(white)

Wall-

mounted

type

Indoor

unit No. 2

Wall-

mounted

type

Outdoor

unit

Indoor

unit

terminal

plate

Indoor

unit No. 3

Remote controller crossover wiring (Dia. 0.5 to 2 mm2)

Total length of wiring 200 m or less

Leakage breaker Leakage breaker

Leakage breaker

(Using a wired remote controller with a single-type system)

1. Wall-mounted units do not include a terminal plate for connecting a remote controller.

2. To connect the remote controller, remote controller cord is required.

Example: Using a wireless remote controller

with a simultaneous-operation multi system

System address (S2) (Setting at shipment:

“0”)

When using wall-mounted units in a simultaneous-operation multi system, connect the remote controller crossover wiring to the remote controller connector (2P) on the main unit, as shown in the diagram.

10-16. System Control

System control refers to connecting link wiring for control, for simultaneous-operation multi systems, group control, and main-sub remote controller control.

10-16-1. Basic wiring diagram 1

Single type and simultaneous-operation multi system

● Simultaneous-operation multi system

● Be careful to avoid miswiring when connecting the wiring. (Miswiring will damage the units.)

(Wiring procedure)

(1) Set the No. 1 wall-mounted indoor unit so that it can be operated by the wireless remote controller. (This is set

at the time of shipment.) On the indoor unit control PCBs, set the No. 2 and following wall-mounted units to the sub remote controller. (Refer to 10-16-5.)

(2) Connect the crossover wiring to the lead wires (white/black) which extend out from the remote controller connec-

tors of the No. 1 indoor unit and other wall-mounted indoor units (as shown in the basic wiring diagram 1 above). Connect the crossover wiring to 1 and 2 on the remote controller wiring terminal plate for units (4-way, ceilingmounted, etc.) other than the No. 1 indoor unit.

(3) Connect the inter-unit control wiring to 1 and 2 on the No. 1 indoor unit terminal plate, and to 1 and 2 on the

outdoor unit terminal plate. Also connect the inter-unit control wiring between the indoor units.

(4) When the indoor and outdoor unit power is turned ON, automatic address setting is performed (when there is

only 1 outdoor unit or when the system address is 0).

Fig. 10-13

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* If the system address is “0,” automatic address setting is performed when the power is turned ON (in the case

shown in basic wiring diagram 1). This requires approximately 4 – 5 minutes (when the outdoor / indoor unit ratio is 1:1 as shown in basic wiring diagram 1). During automatic address setting, LED 1 and 2 on the outdoor unit control PCB blink alternately. These LEDs turn OFF when automatic address setting is completed.

10-16-2. Basic wiring diagram 2

Group control (when a central control device is not used)

● A maximum of 8 indoor units can be connected to a single remote controller.

Example: In a refrigerant system where 2 or 3 indoor units are connected to 1 outdoor unit, set the new system

address (refrigerant system address) before turning ON the remote power switch. (Refer to 10-15-3.) (Set using the system address black rotary switch on the outdoor unit control PCB.)

NOTE

L N

1 2

L N

Leakage breaker

Outdoor unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Indoor

unit

Outdoor unit

Ground Ground

GroundGround

Ground

System address rotary switch (Change the setting to “1”.)

System address rotary switch (Change the setting to “2”.)

Indoor power crossover wiring – up to 16 units (no-heater units only)

Inter-unit control wiring

No. 1

No. 2 No. 3 No. 4 No. 5

Remote controller crossover wiring for group control (field-supply wiring)

Up to 8 units can be set for group control

Connection to lead wires (Black / White)

Wall-mounted

type

(Thickness 0.5 – 2.0 mm2, total length 200 m or less)

1. Wall-mounted units do not include a terminal plate for connecting a remote controller.

2. For group control of wall-mounted units, connect the remote controller crossover wiring to the remote controller connector (2P) on the main unit, as shown in the diagram.

Fig. 10-14

(Wiring procedure)

(1) Set the No. 1 wall-mounted indoor unit so that it can be operated by the wireless remote controller. (This is set

at the time of shipment.) On the indoor unit control PCBs, set the No. 2 and following wall-mounted units to the sub remote controller. (Refer to Item 10-16-5.)

(2) Connect the crossover wiring to 1 and 2 on the remote controller wiring terminal plates of the No. 1 indoor unit

and the other indoor units (as shown in the basic wiring diagram 2 above).

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(3) Connect the inter-unit control wiring to 1 and 2 on the No. 1 indoor unit terminal plate, and to 1 and 2 on the

outdoor unit terminal plate. Connect the wiring in the same way from the other outdoor units to U1 and U2 on the indoor units terminal plates (different refrigerant system).

(4) Perform automatic address setting from the outdoor unit. (For the automatic address setting procedure, refer to

10-16-4.)

* Models with auxiliary heaters cannot be used for “crossover wiring” of the indoor unit power wires. (Use a pull

box to divide the wiring.)

* Be sure to use the indoor unit temperature sensor (body sensor) when using this control. (Status at shipment)

NOTE

10-16-3. Setting the outdoor unit system addresses

For basic wiring diagram 2 (Set the system addresses: 1, 2,...)

System address No.

System address 10s digit

(2P DIP switch)

System address 1s place

(Rotary switch)

0 Automatic address

(Setting at shipment = “0”)

1 (If outdoor unit is No. 1)

“0” setting

Both OFF

10s digit ON

20s digit ON

10s digit and 20s digit ON

“1” setting

“2” setting

“1” setting

“0” setting

2 (If outdoor unit is No. 2)

11 (If outdoor unit is No. 11)

21 (If outdoor unit is No. 21)

(If outdoor unit is No. 30)

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

System address rotary switch (Set to “0” at time of shipment)

System address rotary switch

System address

DIP switch

OFF

10s 20s

3 ~ 5H P

Outdoor unit control PCB

Fig. 10-15

System address rotary switch

System address 10s digit and 20s digit

DIP switch

Automatic address button (black)

Terminal plug (black)

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10-16-4. Automatic address setting from the outdoor unit

When there are multiple outdoor units as shown in basic wiring diagram 2

● If the power can be turned ON separately for the indoor and outdoor units in each system (indoor unit addresses

can be set without operating the compressor):

(1) Turn ON the indoor and outdoor unit power for refrigerant system 1.

Press and hold the automatic address setting button (black) for 1 second or longer at the outdoor unit where the power was turned ON.

↓

Communication for automatic address setting begins. LED 1 and 2 on the outdoor unit control PCB blink alternately, and turn OFF when address setting is completed.

↓ <Approximately 4 – 5 minutes are required.>

(2) Next, turn ON the power only at the indoor and outdoor units in a different system. Press the automatic address

setting button (black) on the outdoor unit.

↓

LED 1 and 2 on the outdoor unit control PCB blink alternately, and turn OFF when address setting is completed. Repeat the same procedure for each system and complete automatic address setting.

↓

(3) Operation using the remote controller is now possible.

10-16-5. Indoor unit remote controller main-sub setting

● When multiple wall-mounted indoor units are installed for group control in a simultaneous-operation multi sys-

tem, set the control PCB at the No. 2 and following wall-mounted units to “Sub remote control.” If a wired remote controller is used, set the wired remote controller to “Sub.” If 2 wireless remote controllers are used, set the wireless PCB (DIP switch) on the second remote controller to “Sub.”

10-16-6. Indoor unit address setting

● If multiple single-type units are installed in the same room, the addresses can be set to prevent signal interfer-

ence. By coordinating the numbers of the indoor unit (wireless PCB) and remote controller addresses, up to 6 indoor units can be controlled independently by their respective remote controllers. Independent control is not possible when a simultaneous-operation multi system is used.

● Checking the addresses

Press the remote controller address button to display the current address on the remote controller display. If this address matches the indoor unit (wireless PCB) address, the buzzer will sound. (If ALL is set, the buzzer will always sound.) If ALL is set, operation is possible regardless of the indoor unit address. Point the remote controller toward the receiver (indoor unit) that you wish to operate, and send the operation signal.

● Remote controller address setting

Press and hold the address button for 4 seconds or longer to display the address on the remote controller display. The current address appears blinking. The address changes each time the remote controller address button is pressed: ALL → 1 → 2 → 3 → ... → 6. Set the address to match the remote controller you wish to operate. When the SET button is pressed, the address stops blinking and is displayed for 5 seconds. The buzzer sounds if the address matches the indoor unit.

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12312312 3123

6 5 4 ON 3 2 1 OFF

123

ONONON

6 5 4 ON 3 2 1 OFF

Address

ALL 1 2 6

Address Address Address

Indoor unit control PCB

2 HP

Indoor unit control PCB

3 HP

DIP switch

Address switch

(SW101)

(SW102)

DIP switch

Address switch

(SW101)

(SW102)

Remote controller address display

Indoor unit PCB address, DIP switch

Main

Sub

Off

Address switch

Test

Remote controller

For address switches 1, 2, and 3, turn DIP switch 1 to OFF. For address switches 4, 5, and 6, turn DIP switch 1 to ON.

Fig. 10-16

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■ CAFP, SPAFP, DSAFP Type (for Link Wiring)

10-17. Caution

This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor unit, and also in a system where 1 outdoor unit is connected to multiple indoor units (maximum 4 < DoubleTwin >).

● This test run manual describes primarily the procedure when using the wired remote controller.

● If link wiring is used, set the outdoor unit system address to allow the combination of indoor and outdoor units to

be identified. At the same time, indicate the indoor-outdoor unit combination number in a location where it can be checked easily (near the indoor unit nameplates). (This number will be required for subsequent maintenance. Refer to 10-22-2, 3, 4.)

● Request that the customer be present when the test run is performed. At this time, explain the operation manual

and have the customer perform the actual steps.

● Be sure to pass the manuals and warranty certificate to the customer.

● Check that the AC 220 – 240 V wiring is not connected to the inter-unit control wiring connector terminal.

If AC 220 – 240 V is accidentally applied, the indoor or outdoor unit control PCB fuse (0.5 A for both indoor and outdoor units) will blow in order to protect the PCB. Correct the wiring connections, then disconnect the 2P connectors (indoor: blue, OC) (outdoor: blue, serial 1) that are connected to the PCB, and replace them with 2P connectors (indoor: brown, EMG) (outdoor: brown, serial 2). (Refer to the figure below.) If operation is still not possible after changing the brown connectors, try cutting the varistor (black) (both indoor and outdoor). (Be sure to turn the power OFF before performing this work.)

Indoor unit control PCB

Outdoor unit control PCB

Varistor (black)

Fuse 0.5A

SG41

Fuse

VA002

2P connector (brown)

2P connector (blue)

CHK (2P plug)

Serial 1 (blue) connector

0.5A

3 ~ 5 HP

Serial 2 (brown) connector

Fig. 10-17

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Fig. 10-18

Recheck the items to check before the test run.

Set the outdoor unit system address.

Set the remote controller to “test run.”

Turn ON the indoor and outdoor power.

Return the remote controller to normal control.

YES

(See 10-22-3, 4)

( * )

(See 10-20)

(See 10-21)

(See 10-19)

(See 10-22-1)

Check the combination (wiring) of indoor and outdoor units.

Is system “single-type”?

Is outdoor unit multiple?

(See 10-22-2) How to Set the Outdoor Unit System Address

Set the automatic address setting from

outside unit or remote controller.

(See 10-22-1) How to Set Automatic Address

Can

operation be

started?

Refer to “Table of Self-Diagnostic Functions” to check the system. In addition, refer to Item 10-22 and correct any items that need to be corrected.

Note: Check the indoor-side drainage. (*) Required for simultaneous-operation multi systems and for group control.

Automatic Address

Indicate (mark) the combination number.

Turn ON the indoor and outdoor power.

10-18. Test Run Procedure

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10-19. Items to Check Before the Test Run

(1) Turn the remote power switch ON at least 12 hours in advance in order to energize the crank case heater.

(2) Fully open the closed valves on the narrow-tube and wide-tube sides.

10-20. Test Run Using the Remote Controller

(1) Press and hold the remote controller button for 4 seconds or longer. Then press the button.

● “TEST” appears in the LCD display during the test run.

● Temperature control is not possible when test run mode is engaged.

(This mode places a large load on the devices. Use it only when performing the test run.)

(2) Use either Heating or Cooling mode to perform the test run.

Note: The outdoor unit will not operate for approximately 3 minutes after the power is turned ON or after it stops

operating.

(3) If normal operation is not possible, a code appears on the remote controller LCD display.

Refer to the “Table of Self-Diagnostic Functions and Corrections” on the next page, and correct the problem.

(4) After the test run is completed, press the button again. Check that “TEST” disappears from the LCD display.

(This remote controller includes a function that cancels test run mode after a 60-minute timer has elapsed, in order to prevent continuous test run operation.)

(5) For the test run of an inverter outdoor unit, operate the compressors for a minimum of 10 minutes (in order to

check for open phase). * When performing a test run using a wired remote controller, operation is possible without attaching the cas-

sette-type ceiling panel. (“P09” will not be displayed.)

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Wired remote

controller display

Cause

Correction

Nothing is displayed

Operation lamp is blinking.

Standby lamp is blinking.

Timer lamp and Standby lamp are blinking alternately.

Both the Operation lamp and Standby lamp are blinking together.

Indoor unit

receiver lamp

E02 displayed

E14 displayed

E04

displayed

E06

displayed

E15

displayed

Group connection and simultaneous-operation multi system

• Remote controller is not connected with indoor unit correctly.

• Indoor unit power is not ON.

Connect the remote controller correctly. Turn ON the indoor unit power.

Check the remote controller and inter-unit control wiring. Perform automatic address setting (10-22).

Connect the remote controller correctly.

Check the remote controller crossover wiring. Perform automatic address setting again.

Connect the wiring correctly.

E01 displayed

• Automatic address setting has not been completed.

•

Inter-unit control wiring is cut or is not connected correctly.

• Remote controller is not connected with indoor unit correctly.

• Reversed phase or open phase in the 3-phase power at one of the outdoor units in the group.

• Insufficient gas

• Ceiling panel connector at one of the indoor units

in the group is not connected correctly.

• DC fan trouble at one of the indoor units in the group.

• Indoor-outdoor unit type mismatch.

• Remote controller is not connected with indoor

unit correctly.

• Remote controller crossover wiring is cut or is not connected correctly.

• Indoor-outdoor inter-unit wiring is not connected correctly.

Refer to 10-22-1. Basic wiring diagram, and make the correct setting.

• Inter-unit control wiring is cut or is not connected correctly.

Check that the total capacities of the indoor and outdoor units are appropriate.

Connect the indoor unit ceiling panel connector correctly.

Check whether the fan holder is loose. Check the wiring between the DC fan and the PCB.

Check that the indoor and outdoor unit types are correct.

• Remote controller crossover wiring is connected to the indoor unit, however it is set for individual operation.

Perform automatic address setting (10-22).

• Check outdoor operation with separate maintanance-use remote controller.

Reverse 2 phases of the outdoor unit 3-phase power and connect them correctly.

• Indoor unit capacity is too low.

E16

displayed

P05

displayed

P09

displayed

P12

displayed

L02 L13

displayed

L10

displayed

L07

displayed

• Indoor unit capacity is too high.

10-21. Table of Self-Diagnostic Functions and Corrections CAFP, SPAFP, DSAFP, MAFP Type

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10-22. Automatic Address Setting

10-22-1. Basic wiring diagram

● Link wiring

● A terminal plug (black) is attached to each of the outdoor unit control PCBs. At only one outdoor unit, leave the

terminal plug short-circuit socket on the “Yes” side. At all the other outdoor units, change the socket (from “Ye s” to “No”).

● A maximum of 8 indoor units can be connected to 1 remote controller for group control.

NOTE

3-1

3-2

1-1

1-2

2-1

2-2

2-3

3-3

3-4

Refrigerant system No. 1 Refrigerant system No. 2 Refrigerant system No. 3

(Change setting to “1”)

(Change setting to “2”) (Change setting to “3”)

No. 1 No. 2 No. 3

Inter-unit control wiring

Terminal plate 1, 2

Outdoor unit

Indoor unit

Remote controller

Remote controller crossover wirin

for group control

Remote controller Remote controller

Change the terminal plug (black) shortcircuit socket

Change the terminal plug (black) short-circuit socket

System address rotary switch on the outdoor unit PCB

Automatic address setting from the outdoor unit CAFP, SPAFP, DSAFP type

Case 1

● If the power can be turned ON separately for the indoor and outdoor units in each system, the indoor unit

addresses can be set without running the compressor.

(1) Turn on the indoor and outdoor unit power for refrigerant system 1.

Press and hold the automatic address setting button (black) for 1 second or longer at the outdoor unit where the power was turned ON.

↓

Communication for automatic address setting begins.

↓

LED 1 and 2 on the outdoor unit control PCB blink alternately, and turn OFF when address setting is completed.

↓ <Approximately 4 – 5 minutes are required.>

(2) Next, turn ON the power only at the indoor and outdoor units in a different system. Press the automatic address

setting button (black) on the outdoor unit.

↓

LED 1 and 2 on the outdoor unit control PCB blink alternately, and turn OFF when address setting is completed.

↓

Repeat the same procedure for each system and complete automatic address setting.

↓

(3) Operation using the remote controller is now possible.

Fig. 10-19

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Case 2

● If the power cannot be turned ON separately for the indoor and outdoor units in each system:

The compressors must be run in order to automatically set the indoor unit addresses. Therefore perform this step after completing the refrigerant tubing work.

(1) Turn ON the power to the indoor and outdoor units in all refrigerant systems.

↓

When setting addresses in cooling mode (2) Short-circuit the mode-change pin at the outdoor unit where automatic address setting will be performed. Then

press the automatic address setting button (black).

↓

When setting addresses in heating mode (2) Press the automatic address setting button (black) at the outdoor unit where automatic address setting will be

performed.

↓

(3) LED 1 and 2 blink alternately. The compressors begin running in Cooling (or Heating) mode. Communication for

automatic address setting begins, using the temperature changes at the indoor units.

↓

Address setting is completed when the compressors stop and the LED indicators turn OFF. <Approximately 15 minutes is required for 1 system.> If address setting fails, LED 1 and 2 blink simultaneously and the alarm contents are displayed at the remote controller.

(4) After 1 system is completed, be sure to press the automatic address setting button (black) at the other outdoor

units to complete automatic address setting in the same way for each system.

(5) Operation using the remote controller is now possible.

Automatic address setting using the remote controller

Case 3

● If the power can be turned ON separately for the indoor and outdoor units in each system (indoor unit addresses

can be set without running the compressor):

Individual system automatic address setting: Display item code “A1.”

(1) Press the remote controller timer time button and button simultaneously. (Hold for 4 seconds or longer.)

↓

(2) Then press either the temperature setting or button.

(Confirm that the item code is “A1.”)

↓

(3) Use either the or button to select the outdoor unit to perform automatic address setting for. Then

press the button. (“R.C.1” is displayed, and automatic address setting is performed for refrigerant system 1.) When automatic address setting for system 1 is completed, the units return to normal stopped status. <Approximately 4 – 5 minutes are required.>

During automatic address setting, “SETTING” blinks on the remote controller display. This display disappears when address setting is completed.

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Case 4

● If the power cannot be turned ON separately for the indoor and outdoor units in each system:

(The compressors must be run in order to automatically set the indoor unit addresses. Therefore perform this step after completing the refrigerant tubing work.)

All-systems automatic address setting: Display item code “AA.”

(1) Press the remote controller timer time button and button simultaneously. (Hold for 4 seconds or longer.)

↓

(2) Next press the button.

(Automatic address setting is performed in sequence for all outdoor units from No. 1 to No. 30. When automatic address setting is completed, the units return to normal stopped status.) <Approximately 15 minutes is required for each system.>

↓

During automatic address setting, “SETTING” blinks on the remote controller display. This display disappears when address setting is completed.

Fig. 10-20

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Fig. 10-21

10-22-2. Setting outdoor unit system addresses

For the basic wiring diagram (Set the system addresses: 1, 2, 3...)

System address rotary switch (Set to “0” at time of shipment)

System address rotary switch

System address

DIP switch

OFF

10s 20s

Outdoor unit control PCB

3 ~ 5 HP

System address No.

System address 10s digit

(2P DIP switch)

System address 1s place

(Rotary switch)

0 Automatic address

(Setting at shipment = “0”)

1 (If outdoor unit is No. 1)

“0” setting

Both OFF

10s digit ON

20s digit ON

10s digit and 20s digit ON

“1” setting

“2” setting

“1” setting

“0” setting

2 (If outdoor unit is No. 2)

11 (If outdoor unit is No. 11)

21 (If outdoor unit is No. 21)

(If outdoor unit is No. 30)

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

(black)

System address 10s digit and 20s digit DIP switch

Automatic address button (black)

Terminal plug

Mode change pin

System address rotary switch

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10-22-3. Checking indoor unit addresses

Use the remote controller to check the addresses of the indoor units. Press and hold the button and button for 4 seconds or longer (simple settings mode, “ALL” appears on the remote controller). Then press the button and select the indoor address. (For the system addresses of the No. 1 outdoor unit, each time the button is pressed, the address changes as follows: 1-1, 1-2, ... 1-1, ...) The indoor unit fan operates only at the selected indoor unit. Confirm the indoor unit address. (For the system addresses of the No. 2 outdoor unit, the displayed addresses are 2-1, 2-2, ...)

Press the button again to return to the normal remote controller mode.

10-22-4. Indicating (marking) the indoor and outdoor unit combination number

Indicate (mark) the number after automatic address setting is completed.

(1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensure that

the indoor and outdoor unit numbers correspond to the system address number on the outdoor unit control PCB, and use a magic marker or similar means which cannot be easily removed to indicate the numbers in an easily visible location on the indoor units (near the indoor unit nameplates).

Example: (Outdoor) 1 – (Indoor) 1, 2... (Outdoor) 2 – (Indoor) 1, 2...

(2) These numbers will be needed for maintenance. Be sure to indicate them.

Fig. 10-22

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■ MAFP Type (for Link Wiring)

10-23. Caution

● This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor

unit, and also in a system where 1 outdoor unit is connected to multiple indoor units (maximum 4).

● If link wiring is used, set the outdoor unit system address to allow the combination of indoor and outdoor units to

● Request that the customer be present when the test run is performed. At this time, explain the operation manual

and have the customer perform the actual steps.

● Be sure to pass the manuals and warranty certificate to the customer.

● Check that the AC 220 – 240 V wiring is not connected to the inter-unit control wiring connector terminal.

2 HP

2P connector (blue)

Fuse (0.5A)

CHK (2P plug)

SW103

ON OFF TEST

SW103

TEST ON OFF

2P connector (brown)

Varistor (black)

VA002

Varistor (black) VA002

Indoor unit control PCB

3 HP

Indoor unit control PCB

Fig. 10-23

Outdoor unit control PCB

Varistor (black)

Fuse

VA002

Serial 1 (blue) connector

0.5A

Terminal plug (black)

3 ~ 5 HP

Serial 2 (brown) connector

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10-24. Test Run Procedure

Recheck the items to check before the test run.

Indicate (mark) the combination number.

Set the outdoor unit system address.

(See 10-26-2) How to Set the Outdoor Unit System Address

Set the automatic address setting

from outside unit.

(See 10-26-1, 2) How to Set Automatic Address

Set the indoor unit control unit to “TEST.”

Turn ON the indoor and outdoor power.

Turn the power back ON to the indoor unit.

YES

(See 10-26-3, 4)

(See 10-26-3)

(See 10-13)

(See 10-25)

(See 10-11)

(See 10-26-1)

Check the combination (wiring) of indoor and outdoor units.

Is system “single-type”?

(1 indoor unit is connected

to 1 outdoor unit)

Are multiple outdoor units used?

Can

operation be

started?

Refer to “Table of Self-Diagnostic Functions” to check the system. In addition, refer to Item 10-26 and correct any items that need to be corrected.

Note: Check the indoor-side drainage.

(Automatic Address)

Turn ON the indoor and outdoor power.

(Automatic Address)

Fig. 10-24

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Wired remote

controller display

Cause

Correction

Nothing is displayed

Operation lamp is blinking.

Standby lamp is blinking.

Timer lamp and Standby lamp are blinking alternately.

Both the Operation lamp and Standby lamp are blinking together.

Indoor unit

receiver lamp

E02 displayed

E14 displayed

E04

displayed

E06

displayed

E15

displayed

Group connection and simultaneous-operation multi system

• Remote controller is not connected with indoor unit correctly.

• Indoor unit power is not ON.

Connect the remote controller correctly. Turn ON the indoor unit power.

Check the remote controller and inter-unit control wiring. Perform automatic address setting (10-22).

Connect the remote controller correctly.

Check the remote controller crossover wiring. Perform automatic address setting again.

Connect the wiring correctly.

E01 displayed

• Automatic address setting has not been completed.

•

Inter-unit control wiring is cut or is not connected correctly.

• Remote controller is not connected with indoor unit correctly.

• Reversed phase or open phase in the 3-phase power at one of the outdoor units in the group.

• Insufficient gas

• Ceiling panel connector at one of the indoor units

in the group is not connected correctly.

• DC fan trouble at one of the indoor units in the group.

• Indoor-outdoor unit type mismatch.

• Remote controller is not connected with indoor

unit correctly.

• Remote controller crossover wiring is cut or is not connected correctly.

• Indoor-outdoor inter-unit wiring is not connected correctly.

Refer to 10-22-1. Basic wiring diagram, and make the correct setting.

• Inter-unit control wiring is cut or is not connected correctly.

Check that the total capacities of the indoor and outdoor units are appropriate.

Connect the indoor unit ceiling panel connector correctly.

Check whether the fan holder is loose. Check the wiring between the DC fan and the PCB.

Check that the indoor and outdoor unit types are correct.

• Remote controller crossover wiring is connected to the indoor unit, however it is set for individual operation.

Perform automatic address setting (10-22).

• Check outdoor operation with separate maintanance-use remote controller.

Reverse 2 phases of the outdoor unit 3-phase power and connect them correctly.

• Indoor unit capacity is too low.

E16

displayed

P05

displayed

P09

displayed

P12

displayed

L02 L13

displayed

L10

displayed

L07

displayed

• Indoor unit capacity is too high.

10-25. Table of Self-Diagnostic Functions and Corrections CAFP SPAFP, DSAFP MAFP Type

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Page 93

3-1

3-2 3-3

1-1

1-2 1-3

2-1

2-2

System address 1

(Change setting to “1”)

System address 2

(Change setting to “2”) (Change setting to “3”)

System address 3

No. 3No. 2No. 1

Outdoor unit

Inter-unit control wiring

Terminal plate 1, 2

Indoor unit

Change the terminal plug (black) short-circuit socket

Inter-unit control wiring

Wired remote controller

Wireless remote controller

Wired remote controller

Remote controller crossover wiring for group control

10-26. Automatic Address Setting

10-26-1. Basic wiring diagram

● Link wiring

● A terminal plug (black) is attached to each of the outdoor unit control PCBs. At only 1 outdoor unit, leave the ter-

minal plug short-circuit socket on the “Yes” side. At all the other outdoor units, change the socket (from “Ye s” to “No”).

● A maximum of 8 indoor units can be connected to 1 remote controller for group control.

NOTE

* If wall-mounted type units are used for a simultaneous-operation multi system (group control), refer to 10-16. System Con-

trol (basic wiring diagrams and wiring procedures) on the reverse cover of this manual when wiring.

Fig. 10-25

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10-26-2. Setting the outdoor unit system addresses

For basic wiring diagram (Set the system addresses: 1, 2, 3...)

System address rotary switch

System address 10s digit and 20s digit

DIP switch

Automatic addresses button (black)

Terminal plug (black)

System address No.

System address 10s digit

(2P DIP switch)

System address 1s place

(Rotary switch)

0 Automatic address

(Setting at shipment = “0”)

1 (If outdoor unit is No. 1)

“0” setting

Both OFF

10s digit ON

20s digit ON

10s digit and 20s digit ON

“1” setting

“2” setting

“1” setting

“0” setting

2 (If outdoor unit is No. 2)

11 (If outdoor unit is No. 11)

21 (If outdoor unit is No. 21)

(If outdoor unit is No. 30)

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

OFF

1 2

Fig. 10-26

System address rotary switch (Set to “0” at time of shipment)

System address rotary switch

System address

DIP switch

OFF

10s 20s

Outdoor unit control PCB

3 – 5 HP

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Case 1

● If the power can be turned ON separately for the indoor and outdoor units in each system:

(The indoor unit addresses can be set without running the compressor.)

Automatic address setting from the outdoor unit (MAFP type)

(1) Turn on the indoor and outdoor unit power for refrigerant system 1.

Press and hold the automatic address setting button (black) for 1 second or longer at the outdoor unit where the power was turned ON. The compressor operates when the power is turned ON at a different outdoor unit.

↓

Communication for automatic address setting begins.

↓

LED 1 and 2 on the outdoor unit control PCB blink alternately, and turn OFF when address setting is completed.

↓ <Approximately 4 – 5 minutes are required.>

(2) Next, turn ON the power only at the indoor and outdoor units in a different system. Press the automatic address

setting button (black) on the outdoor unit.

↓

LED 1 and 2 on the outdoor unit control PCB blink alternately, and turn OFF when address setting is completed.

↓

Repeat the same procedure for each system and complete automatic address setting.

↓

(3) Operation using the remote controller is now possible.

Case 2

● If the power cannot be turned ON separately for the indoor and outdoor units in each system:

The compressors must be run in order to automatically set the indoor unit addresses. Therefore perform this step after completing the refrigerant tubing work.

(1) Turn ON the power to the indoor and outdoor units in all refrigerant systems.

↓

When setting addresses in cooling mode (2) Short-circuit the mode-change pin at the outdoor unit where automatic address setting will be performed. Then

press the automatic address setting button (black).

↓

When setting addresses in heating mode (2) Press the automatic address setting button (black) at the outdoor unit where automatic address setting will be

performed.

↓

(3) LED 1 and 2 blink alternately. The compressors begin running in cool (or heat) mode. Communication for auto-

matic address setting begins, using the temperature changes at the indoor units.

↓

(4) After 1 system is completed, be sure to press the automatic address setting button (black) at the other outdoor

units to complete automatic address setting in the same way for each system.

(5) Operation using the remote controller is now possible.

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10-26-3. Checking indoor unit addresses

Press the button again to return to the normal remote controller mode.

10-26-4. Indicating (marking) the indoor and outdoor unit combination number

Indicate (mark) the number after automatic address setting is completed.

(1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensure that

Example: (Outdoor) 1 – (Indoor) 1, 2... (Outdoor) 2 - (Indoor) 1, 2...

(2) These numbers will be needed for maintenance. Be sure to indicate them.

10-26-5. Setting a wired remote controller as a sub remote controller

Change the remote controller address connected on the reverse side of the remote controller switch PCB from the Main position to the Sub position.

Fig. 10-27

Fig. 10-28

TIMER TMNL.

RCU

TMNL.

RCU.ADR

RCU.Main

RCU.Sub

RCU.CK

To Service Technicians

To display the sensor temperature:

WARNING

To avoid an electric shock hazard, DO NOT touch any terminal on the Printed Circuit Board with a metal rod, a screwdriver edge or bare hand when power is supplied.

To display the trouble history: Press both and buttons on the remote controller for more than 4 seconds together. Change the alarm message: / (SET TEMP) buttons CODE NO.

Press the button to finish service mode.

On the remote controller, press + + at the same time for more than 4 seconds. Set CODE No. with / (SET TEMP) button.

Set DATA from to with / (TIMER) button. Press Finally, Press

(New) (Old)

Changing method for room temperature sensor (from Indoor unit to RCU)

Remote Controller (Sub)

Remote controller address connector

Remote Controller (Main)

Checking remote controller

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Installing the Remote Controller

● If the remote controller is to be installed onto a wall or other surface for use, first place the remote controller in

the location where it will be installed and press (ON / OFF). Confirm that the “signal-received” sound occurs at the indoor unit and that the A/C begins operating.

Place in holder

Installation screws Truss tapping 4 x 16

Press

● Installing the batteries

(1) Press on both sides of the remote controller cover

and slide it downwards to remove it.

(2) Insert 2 AAA alkaline batteries. (Pay attention to

the + and – directions.)

(3) Use an object with a sharp point to press the ACL

(ALL CLEAR) button, then reattach the cover. (Be sure to press the ACL (ALL CLEAR) button after replacing the batteries.)

Fig. 10-29

Fig. 10-30

To remove the remote controller, pull it towards you.

Precautions for remote controller installation

● Before mounting the remote controller on the wall, place the unit at the mounting position, then turn on any fluo-

rescent lamps, press the ON/OFF button, and check that the air conditioner operates correctly.

When using the remote controller to detect the room temperature, observe the following precautions during installation:

• Avoid locations where the remote controller will be exposed to the direct path of air blown from the air conditioner.

• Avoid locations where the remote controller will be exposed to direct sunlight.

• Avoid locations where the remote controller will be exposed to direct heat sources.

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10-27. Caution for Pump Down

Pump down means refrigerant gas in the system is returned to the outdoor unit. Pump down is used when the unit is to be moved, or before servicing the refrigerant circuit.

CAUTION

● This outdoor unit cannot col-

lect more than the rated refrigerant amount as shown by the nameplate on the back.

● If the amount of refrigerant is

more than that recommended, do not conduct pump down. In this case use another refrigerant collecting system.

Important Information Concerning Pump Down

Observe the following items when using pump down operation to recover refrigerant.

(1) If the length of inter-unit tubing exceeds 30 m, pump down cannot be used to recover the refrigerant. (The overload

protection device may be activated.) In that case, use refrigerant recovery equipment to recover the refrigerant.

(2) Press and hold the “Recover refrigerant” button on the outdoor unit PCB for 1 second or longer.

• During refrigerant recovery, LED 1 blinks and LED 2 is lit.

• Close the liquid-side valve during refrigerant recovery. If the unit is operated for 10 minutes or longer with the

liquid-side valve open, operation will be stopped, although no alarm will be displayed on the remote controller. If this occurs, close the valve and restart operation.

(3) When the valve service port pressure is approximately 0.1 MPa, press the S005 (Refrigerant recovery) button again

to end refrigerant recovery.

• In order to protect the compressor, do not continue operating to generate a negative pressure in the interunit tubing.

Auto address

The S005 (Refrigerant recovery) button is

located at the bottom right of the outdoor unit PCB, as shown in the figure at left.

Refrigerant

recovery

(S001)

IC001

(S005)

System address

(S002)

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Page 99

CAFP

11. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER RECEIVER

■ K70D037Z for 4-Way Cassette (CAFP Type)

11-1. Installing the Receiver Unit

The only corner where the receiver unit can be installed is the one shown in Fig. 11-1. Therefore, consider the direction of the panel when it is installed on the indoor unit.

(1) Remove the intake grille.

(2) Remove the screws that fasten the adjustable cor-

ner cap, then slide the adjustable corner cap to the side to remove it. (Fig. 11-2)

(3) The square hole used for the panel wiring is filled

with packing (sponge material) used for insulation.* Remove the packing, then pass the wiring from the wireless receiver unit through the grill. Twist the wires together and use a cable fastener to fasten them and attach with a screw, then replace the packing in the hole as it was before. (Fig. 11-3)

* If this packing is not used, there is danger of con-

densation on the wiring. Be sure to replace the packing.

(4) After completing wiring as described in “Wiring the

Receiver Unit” on the next page, twist the wires together and use a cable fastener to fasten them, leaving a length of wiring that is long enough to permit removal of the adjustable corner cap. (Fig. 11-3)

(5) Install the receiver unit in the panel. At this time,

slide the receiver unit so that each of the 3 tabs fits into its respective hole. Take care that the wires are not pinched. (Fig. 11-4)

* Refer to the instruction manual provided with the

panel.

● Do not twist the control wiring together with the

power wiring because this may cause a malfunction.

● Install a noise filter or take other appropriate action

if electrical noise affects the power supply circuit of the unit.

* For wiring and test run procedures, refer to “Wiring

the Receiver Unit” and “Test Run.”

NOTE

Indoor unit refrigerant tube side

Indoor unit drain tube side

Receiver unit installation position (Right side of electrical components box)

Indoor unit electrical components box

Fig. 11-1

Ceiling panel

screw

Adjustable corner cap

Fig. 11-2

Remove the packing, twist the wires together and fasten them with the cable fastener. Then replace the packing.

Fig. 11-3

Fig. 11-4

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100

CAFP

11-2. Accessories

11-3. Wiring the Receiver Unit

● Connect the wire from the receiver unit to the

indoor unit remote controller terminal board. (The wire has no polarity.)

11-4. Precautions on Simultaneous Installation of

Wired Remote Controller and Wireless Remote Controller

By installing a wired remote controller, the wireless remote controller kit can permit dual remote control operation at the same time.

(Up to 2 units of remote controllers – a wireless kit and a wired unit – can be installed.)

Dual remote control operation can control 1 or multiple air conditioners using several remote controllers.

1 1

3 1

Fastening screw 4 × 12

Remote control unit

Remote control holder

Parts

Q'ty

Parts

Q'ty

AAA alkaline battery

Receiver unit

Tapping screw 4 × 16

Clamp

No.No.

2PWHT

CN001

WHT

BLK

Indoor unit

Receiver PCB

Remote controller

Terminal board

CAUTION

● Be sure to determine the correct ter-

minal numbers on the indoor unit when wiring the remote controller. The remote controller will be damaged if high voltage (such as 220 – 240 VAC) is applied.

● The wireless remote controller kit

components cannot be used for more than 1 indoor unit at a time. (However, separate receiver units may be used simultaneously.)

● When a wireless remote controller

kit and a wired remote controller are used simultaneously, assign either the wireless remote controller or the wired remote controller as the sub remote controller unit.

● Connection diagram

04-393 DC INV Tech p 64-110 12/13/04 11:35 AM Page 100

Technibel CAFP 164 R, SPAFP 124 R, MAFP 165 R, SPAFP 164 R, DSAFP 164 R Installation Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual