Argo AS1S22MH, ASBS28MH, AS1S28MH, AS1S36MH, ASBS36MH Installation Instructions Manual

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Page 1

AS1S

ASBS

AS2S

ASS

AWS

ACS

ADS

ADPS

AFS

AFNS

AES

REM

85464359926000 2006

– MULTISET System Air Conditioner –

INSTALLATION INSTRUCTIONS

 R410A Models

Indoor Units

Outdoor Units

Indoor Unit Type 22 28 36 56 73 106 140

AS1S 1-Way Air Discharge AS1S22MH AS1S28MH AS1S36MH

Semi-Concealed

ASBS 1-Way Air Discharge ASBS28MH ASBS36MH ASBS56MH ASBS73MH

Semi-Concealed Slim

AS2S 2-Way Air Discharge AS2S22MH AS2S28MH AS2S36MH AS2S56MH AS2S73MH

Semi-Concealed

ASS 4-Way Air Discharge ASS22MH ASS28MH ASS36MH ASS56MH ASS73MH ASS106MH ASS140MH

Semi-Concealed

AWS Wall-Mounted AWS22MH AWS28MH AWS36MH AWS56MH AWS73MH

ACS Ceiling-Mounted ACS36MH ACS56MH ACS73MH ACS106MH ACS140MH

ADS Concealed-Duct ADS22MH ADS28MH ADS36MH ADS56MH ADS73MH ADS106MH ADS140MH

ADPS Concealed-Duct ADPS73MH ADPS106MH ADPS140MH

High Static Pressure

AFS Floor-Standing AFS22MH AFS28MH AFS36MH AFS56MH AFS73MH

AFNS Concealed-Floor- AFNS22MH AFNS28MH AFNS36MH AFNS56MH AFNS73MH

Standing

* Refrigerant R410A is used in the outdoor units.

AES Heat Pump Unit ES04MMIH, AES05MMIH, AES06MMIH

Optional Controllers

Remote Controller REM HW

Wireless Remote Controller (For ASS type) REM HLASS

Wireless Remote Controller (For AS2S, ASBS type) REM HLAS2BS

Wireless Remote Controller (For ACS type) REM HLACS

REM Wireless Remote Controller REM HL

(For AS1S, ADS, ADPS, AFS, AFNS type)

Wireless Remote Controller (For AWS type) REM HLAWS

Simplified Remote Controller REM HWSM

Remote Sensor RSM

System Controller REM HW64S

Schedule Timer REM HWT

DC Inverter R410A

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page a

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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.



This product is intended for professional use. Permission from the power supplier is required when installing an outdoor unit that is connected to a 16 A distribution network.



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.

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.

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 (when the ceiling is 2.7 m high):

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/m3)

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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R407C tools

Item compatible Remarks

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 detector 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.

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 O

Copper tube

Outer diameter 6.35 9.52 12.7 15.88 19.05

Wall thickness 0.8 0.8 0.8 1.0 1.0

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, 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 substances can result in system malfunction.

New tool?

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 4

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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.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 5

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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. Straight Equivalent Length of Joints 1-7. Additional Refrigerant Charge 1-8. System Limitations 1-9. Tubing Length 1-10. Check of Limit Density 1-11. Installing Distribution Joint 1-12 Optional Distribution Joint Kit 1-13. Optional Ball Valve Kit 1-14. Recommended Location of Ball Valves 1-15. Example of Tubing Size Selection and

Refrigerant Charge Amount

2. SELECTING THE INSTALLATION SITE . . . . .21

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 Air-Discharge Chamber 2-7. Dimensions of Outdoor Unit with

Air-Discharge Chamber (field supply) 2-8. Dimensions of Snow Ducting 2-9. Dimensions of Outdoor Unit with

Snow-Proof Vents (field supply)

3. HOW TO INSTALL THE INDOOR UNIT . . . . . .29

 1-Way Air Discharge Semi-Concealed Type

(AS1S Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .29

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

 1-Way Air Discharge Semi-Concealed Slim Type

(ASBS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .34

3-5. Suspending the Indoor Unit 3-6. Placing the Unit Inside the Ceiling 3-7. Installing the Drain Piping 3-8. Checking the Drainage

 2-Way Air Discharge Semi-Concealed Type

(AS2S Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .39

3-9. Suspending the Indoor Unit 3-10. Placing the Unit Inside the Ceiling

3-11. Installing the Drain Piping 3-12. Checking the Drainage

 4-Way Air Discharge Semi-Concealed Type

(ASS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

3-13. Preparation for Suspending 3-14. Suspending the Indoor Unit 3-15. Placing the Unit Inside the Ceiling 3-16. Installing the Drain Piping 3-17. Checking the Drainage

 Wall-Mounted Type (AWS Type) . . . . . . . . . . . .47

3-18. Removing the Rear Panel from the Unit 3-19. Selecting and Making a Hole 3-20. Installing the Rear Panel onto the Wall 3-21. Removing the Grille to Install the Indoor Unit 3-22. Preparing the Tubing 3-23. Shaping the Tubing 3-24. Installing the Drain Hose

 Ceiling-Mounted Type (ACS Type) . . . . . . . . . .51

3-25. Required Minimum Space for Installation and

Service 3-26. Suspending the Indoor Unit 3-27. Duct for Fresh Air 3-28. Shaping the Tubing 3-29. Installing the Drain Piping

 Concealed-Duct Type (ADS Type) . . . . . . . . . .58

3-30. Required Minimum Space for Installation and

Service 3-31. Suspending the Indoor Unit 3-32. Installing the Drain Piping 3-33. Checking the Drainage 3-34. Increasing the Fan Speed

 Concealed-Duct High Static Pressure Type

(ADPS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .63

3-35. Required Minimum Space for Installation and

Service (73, 106, 140 Type) 3-36. Suspending the Indoor Unit 3-37. Installing the Drain Piping 3-38. Caution for Ducting Work

 Floor-Standing Type (AFS Type)

Concealed Floor-Standing Type (AFNS Type) . . .67 3-39. Required Minimum Space for Installation and

Service 3-40. Dimensions and Part Names 3-41. Removing and Attaching the Front Panel

(Floor-Standing Type) 3-42. Installing the Refrigerant Tubing 3-43. Installing the Drain Piping 3-44. Installing the Remote Controller

4. HOW TO INSTALL THE OUTDOOR UNIT . . . .72

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

CONTENTS

Page Page

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 6

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5. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . .73

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

Diameter for Power Supply System

5-3. Wiring System Diagrams

6. HOW TO INSTALL THE REMOTE CONTROLLER

(OPTIONAL PART) . . . . . . . . . . . . . . . . . . . . . .77

6-1. When Using a Wall Box for Flush Mounting 6-2. Basic Wiring Diagram 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

7. HOW TO PROCESS TUBING . . . . . . . . . . . . .82

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. AIR PURGING . . . . . . . . . . . . . . . . . . . . . . . . .86

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

Preparation

9. HOW TO INSTALL THE CEILING PANEL . . . .89

 1-Way Air Discharge Semi-Concealed Type

(AS1S Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .89

9-1. Installing the Ceiling Panel 9-2. How to Use the Stoppers

 1-Way Air Discharge Semi-Concealed Slim Type

(ASBS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .90

9-3. Installing the Ceiling Panel

 2-Way Air Discharge Semi-Concealed Type

(AS2S Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .92

9-4. Before Installing the Ceiling Panel 9-5. Installing the Ceiling Panel 9-6. When Removing the Ceiling Panel for Servicing

 4-Way Air Discharge Semi-Concealed Type

(ASS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

9-7. Before Installing the Ceiling Panel 9-8. Installing the Ceiling Panel 9-9. Wiring the Ceiling Panel 9-10. How to Attach the Corner & Air Intake Grille 9-11. Checking After Installation 9-12. When Removing the Ceiling Panel for Servicing 9-13. Adjusting the Auto Flap

10. TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . .98

10-1. Preparing for Test Run 10-2. Test Run Procedure 10-3. Outdoor Unit PCB Setting

10-4. Auto Address Setting 10-5. Caution for Pump Down 10-6. Meaning of Alarm Messages

11. HOW TO INSTALL THE WIRELESS REMOTE

CONTROLLER RECEIVER . . . . . . . . . . . . . .111



REM HLASS for 4-Way Cassette (ASS Type)

. . .111 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



REM HLACS for Ceiling Mounted (ACS Type)

. . .114 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. Ho w to Use the Test Run Setting

 REM HLAS2BS for 2-Way and High Ceiling

1-Way Type (AS2S, ASBS Type) . . . . . . . . . . .117

11-11. Installing the Display 11-12. Installing the Control Unit 11-13. Installing the Display 11-14. Installing the Control Unit 11-15. Accessories 11-16. Wiring the Receiver Unit 11-17. Precautions on Simultaneous Installation of

Wired Remote Controller and Wireless Remote Controller

11-18. How to Use the Test Run Setting

 REM HL for AS1S, ADS, ADPS, AFS, AFNS Type

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

11-19. Accessories Supplied with Separate

Receiver Unit

11-20. Important Information for Installation of

1 Separate Receiver Unit 11-21. How to Install the Separate Receiver Unit 11-22. Wiring the Separate Receiver Unit

11-23. . . .Important Information for Installation of

2 Separate Receiver Units 11-24. Test Run Setting

12. SPECIAL REMARKS . . . . . . . . . . . . . . . . . . .128

 DC Fan Tap Change Procedure for 4-Way

Cassete (ASS Type)

13. MARKINGS FOR DIRECTIVE

97/23/EC(PED) . . . . . . . . . . . . . . . . . . . . . . . 129

Page

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 7

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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 1-10.

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 1-Way Air Discharge Semi-Concealed

1-2 1-Way Air Discharge Semi-Concealed Slim

1-3 2-Way Air Discharge Semi-Concealed

1-4 4-Way Air Discharge Semi-Concealed

1-5 Wall-Mounted

1-6 Ceiling-Mounted

1-7 Concealed-Duct

1-8 Concealed-Duct High Static Pressure

1-9 Floor-Standing & Concealed Floor-Standing

1-10 Outdoor Unit

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 8

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

Table 1-2 (1-Way Air Discharge Semi-Concealed Slim)

Part Name Figure

Q’ty

Remarks

Flare insulator

Insulating tape

Vinyl clamp

Hose band

Packing

Drain insulator

Drain hose

Installation gauge

For gas and liquid tubes

For gas and liquid tube flare nuts

For flare insulator

For securing drain hose

For drain joint

For measuring clearance between the unit and ceiling

Special washer

For suspension bolts

1 For securing drain hose

(Black)

(White)

Part Name Figure

Q’ty

Remarks

Full-scale installation diagram

Special washer

Flare insulator

Insulating tape

Vinyl clamp

Hose band

Packing

Drain insulator

Sealing putty

Cable

For determining suspension bolt pitch

For temporarily suspending indoor unit from ceiling

For gas and liquid tubes

For gas and liquid tube flare nuts

For flare insulator

For secur ing drain hose

For drain joint

For sealing recessed por tion of po

wer supply

Drain hose

(Black)

For securing drain hose

Connection cable for fan motor

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Table 1-3 (2-Way Air Discharge Semi-Concealed)

Part Name Figure

Q’ty

Remarks

Flare insulator

Insulating tape

Vinyl clamp

Hose band

Packing

Drain insulator

For gas and liquid tubes

For gas and liquid tube flare nuts

For flare insulator and drain insulator

For securing drain hose

For drain joint

or drain joint

(White)

Drain hose (L = 25cm)

Special washer

For suspension bolts

For securing drain hose

For sealing recessed portion of power supply

Putty

Installation gauge (Use the packaging side pad.)

M5 × L40

(Black screw, with washer)

Gauge A (Install on tubing side.)

Gauge B (Install on opposite side of tubing.)

For fastening

installation gauges

Table 1-4 (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 gas and liquid tubes

For securing drain hose

For drain joint

For dr

ain joint

(White)

Washer

For suspension bolts

Screw

Printed on container box

For gas and liquid tube flare nuts

For full-scale installation diagram

For securing drain hose

Table 1-5 (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 × 30 mm

Insulator

For insulating flare nut (73 type only)

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Table 1-6 (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 gas and liquid tube joints

For gas and liquid 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

Table 1-7 (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 gas and liquid tubes

For gas and liquid tube 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 suspending bolts.  Field supply for suspending bolts and nuts.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 11

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Table 1-8 (Concealed-Duct High Static Pressure)

Part Name Figure

Q’ty

Remarks

Special washer 8

Flare insulator 2

Drain socket 1

Tube connector 1

For suspending indoor unit from ceiling

For gas and liquid tubes

For drain pipe connection

For increasing size of liquid tube from ø6.35 to ø9.52 mm (only for 73 type)

Table 1-9 (Floor-Standing & Concealed Floor-Standing)

Part Name Figure

Q’ty

Remarks

Connection pipe 1

Flare insulator 2

Insulating tape 2

Vinyl clamp

Insulating tape (black and long)

Drain insulator

For connecting gas tubes

For gas and liquid tubes

For gas and liquid tube flare nuts

For gas and liquid tubes

For ends of flare insulator

For drain pipe

For drai

n hose joint

(White)

(Black)

Table 1-10 (Outdoor Unit)

Figure

Q’ty

Tube Discharge Assy

Part name

Instruction manual

paper

hp = horsepower

04 Model

(4 hp)

05 Model

(5 hp)

06 Model

(6 hp)

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 12

Page 13

Table 1-13 Indoor Unit Tubing Connection (1, 2...

n–1

)

(mm)

ø15.88

ø9.52

Unit: mm

ø6.35

ø12.7

Gas tubing

(mm)

Liquid tubing

Indoor unit type 22 28 36 56 73 106 140

ø9.52

ø15.88

ø9.52

ø12.7

(mm)

–

7.1

(2.5 hp)

7.1

(

2.5

hp)

15.5

(6 hp)

Below kW

Over kW

Total capacity after distribution

Tubing size

Gas tubing

Liquid tubing

hp = horsepower

Unit: mm

1-5. Tubing Size

Table 1-11 Main Tubing Size (LA)

ø19.05

Unit: mm

15.5

14.0

ø9.52

ø15.88

11.2

System horsepower

Gas tubing (mm)

Liquid tubing (mm)

Table 1-12 Main Tubing Size After Distribution (LB, LC...)

Note: In case the total capacity of connected indoor units exceeds the total capacity of the outdoor units, select the main

tubing size for the total capacity of the outdoor units.

Note: When only one indoor unit is connected to a 6-hp outdoor unit, connect ø19.05 gas tubing up to just before the indoor

unit, then use a socket or similar device (field supply) to change the tube diameter to ø15.88 and connect the gas tube to the indoor unit.

Material O

Copper tubing

Outer diameter 6.35 9.52 12.7 15.88

Wall thickness 0.8 0.8 0.8 1.0

1.0

19.05

Table 1-15 Required Copper Tubing Dimensions Unit: mm

Gas tubing size (mm)

90°

elbow

45°

elbow

U-shape tube bend (R60 100

mm)

Trap bend

12.7

0.30

0.23

0.90

2.30

15.88

0.35

0.26

1.05

2.80

19.05

0.42

0.32

1.26

3.20

Y-branch distribution joint Equivalent length conversion not needed.

Ball valve for service Equivalent length conv

ersion not needed.

1-6. Straight Equivalent Length of Joints

Design the tubing system by referring to the following table for the straight equivalent length of joints.

Table 1-14 Straight Equivalent Length of Joints

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 13

Page 14

1-7. Additional Refrigerant Charge

Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.

Table 1-16 Amount of Refrigerant Charge Per Meter, According to Liquid Tubing Size

Liquid tubing size Amount of refrigerant

charge/m (g/m)

ø6.35 26

ø9.52 56

Required amount of charge = (Amount of refrigerant charge per meter of each size of liquid tube × its tube length) + (...) + (...)

*Always charge accurately using a scale for weighing.

Table 1-17 Refrigerant Charge Amount at Shipment (for outdoor unit)

1-8. System Limitations

Table 1-18 System Limitations

Number of max. connectable indoor units

Outdoor units (Type)

04 05 06

6 8 9

Max. allowable indoor/outdoor capacity ratio

50 – 130%

Heat pump unit

AES04MMIH

3.5

AES05MMIH

3.5

AES06MMIH

3.5

(kg)

1-9. Tubing Length

Table 1-19 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights

R410A distribution joint DDVI16 (for indoor unit)

Note: Do not use commercially available T-joints for the liquid tubing.

L1 L2

LCLB

* Be sure to use special R410A distribution joints (DDVI: purchased separately)

for outdoor unit connections and tubing branches.

Main tube of unit

1st branch

Unit distribution tube

2 3

n-1

Items Marks Contents Length (m)

L1 Max. tubing length

Actual length

150

Equivalent length

175

L (L2 – L3)

Difference between max. length and min.

length from the No.1 distribution joint

1, 2~ n

Max. length of each distribution tube 30

+2+~

n–1

Total max. tubing length including length of

200

each distribution tube (only liquid tubing)

When outdoor unit is installed higher than indoor unit

When outdoor unit is installed lower than indoor unit 40

H2 Max. difference between indoor units

L = Len

th, H = Height

Allowable tubing length

Allowable elevation differenc

+L1

Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown in the figure below.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 14

Page 15

WARNING

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

1-10. Check of Limit Density

When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally leaks out, its density does not exceed the limit level for that room.

If the density could exceed the limit level, it is necessary to provide an opening between the unit 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/m3(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 in the field. (For the refrigerant charge amount at shipment, refer to the unit’s nameplate.)

1-11. Installing Distribution Joint

(1) Refer to “HOW TO ATTACH DISTRIBUTION

JOINT” enclosed with the optional distribution joint kit (DDVI16).

(2) In order to prevent accumulation of refrigerant oil in

stopped units, if the main tubing is horizontal then each branch tubing length should be at an angle that is greater than horizontal. If the main tubing is vertical, provide a raised starting portion for each branch.

(3) If there are height differences between indoor units

or if branch tubing that follows a distribution joint is connected to only 1 unit, a trap or ball valve must be added to that distribution joint. (When adding the ball valve, locate it within 40 cm of the distribution joint.) (Consult with ARGO separately concerning the ball valve.)

If a trap or ball valve is not added, do not operate the system before repairs to a malfunctioning unit are completed. (The refrigerant oil sent through the tubing to the malfunctioning unit will accumulate and may damage the compressor.)

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

40.5

54.0

20 30 40 50 60 70 80 kg

67.5

81.0

94.5

108.0

121.5

135.0

148.5

162.0

175.5

189.0

202.5

216.0

229.5

243.0

256.5

270.0

Total amount of refrigerant

Min. indoor floor area

(when the ceiling is 2.7 m high)

Min. indoor volume

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)

100

15 to 30°

Tube branching methods (horizontal use)

Arrow view

Horizontal line

View as seen from arrow

Ball valve

(BV: purchased

separately)

Main tubing

Types of vertical trap specifications

(If only 1 unit is connected, a ball valve is also needed on this side.)

Indoor unit (1)

(When not using ball valve)

(When using ball valve)

Branch tubing is directed upward.

(Each unit is connected to tubing that is either level or is directed downward.)

Main tubing

Indoor unit

More than 20 cm

Indoor unit (more than 2 units)

Horizontal

Indoor unit is directed downward

CAUTION

Pay special attention to any location, such as a basement, etc., where leaking refrigerant can accumulate, since refrigerant gas is heavier than air.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 15

Page 16

DDVI16 Use: For indoor unit (Capacity after distribution joint is 22.4 kW or less.)

Table 1-21 Dimension for Connections of Each Part

Unit: mm

210 55

145

135

185

103

G H

Insulator

Gas tube Liquid tube

Example: (F below indicates inner diameter. below indicates outer diameter.)

• When creating a tube of diameter G, use a tube cutter and cut between F and H. Cut at a point as close to H as possible.

Position A B C D E F G H I J

Dimension – – – – – ø19.05 ø15.88 ø12.7 ø9.52 ø6.35

1-12. Optional Distribution Joint Kit

See the installation instructions packaged with the distribution joint kit for the installation procedure.

Table 1-20

Model name Cooling capacity after distribution Remarks

DDVI16 22.4 kW or less For indoor unit

1-13. Optional Ball Valve Kit

Table 1-22

1. Because the diameter of this ball valve is approximately the same as the inner diameter of the connecting copper tube, correction for pressure loss is not necessary.

2. Airtightness must be 3.6 MPa or more.

It is recommended that the ball valve is installed at each outdoor unit (gas tube and liquid tube), in order to prevent refrigerant from being released into the atmosphere if the outdoor unit is eventually replaced.

NOTE

Model No.

Gas tube Liquid tube

BV-RXP160AG 15.88

BV-RXP56AG 12.7

9.52

6.35

Valve connecting tube size (mm) Indoor unit where used

16.0 kW or less

5.6 kW or less

Total capacity of indoor units after the valve

Service port

30˚

Insulator

(divided in 2)

ø6.35 (1/4") ø9.52 (3/8") ø12.7 (1/2") ø15.88 (5/8")

BCD

72 76 89

108

42 42 42 51

54 54 58 68

16 16 20 22

44 44 51 56

Type with flare nut at each end

Dimensions

Size

Figure

Dimensions

Unit: mm

Note: Install the service port so that it faces the extension side.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 16

Page 17

Ball Valve Installation (for refrigerant R410A only)

Check the size of the ball valve set you separately purchased.

1. Installing the ball valve

(1) If the ball valve is to be installed for indoor unit

extension, or near an indoor unit, install it so that the service port faces the indoor unit side. (This facilitates indoor unit leak testing and vacuum procedures.) Install the ball valve as close as possible to the distribution joint.

CAUTION

This ball valve is for use only in systems that utilize refrigerant R410A. The service port connection size is ø7.94. The face-to-face distance between the ø12.7 or ø15.88 flare nuts is 26 mm or 29 mm, respectively. Be sure to use only the supplied flare nuts. Be careful to use the correct tools and materials.

2. Flare nut tightening

The flare nut on the service port side is fully tightened. Recommended tightening torque is (8~10 N·m).

If the valve is used for extension, it can be used as-is. In all other cases, use 2 monkey wrenches in combination to loosen the flare nut.

Outdoor unit

Indoor

Indoor unit

Service port

Ball valve

Outdoor

Indoor unit extension

Model name Size

BV-RXP56AG ø6.35 • ø12.7

BV-RXP160AG ø9.52 • ø15.88

Service port

Fully tightened (this side only)

Plug (this side only)

Cool with damp shopcloth or other means when heating brazed plug with torch.

Service port Tightening torque (8~10 N

•m)

Valve cap Tightening torque (19~21 N

•m)

These valves are flare-nut type.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 17

Page 18

1-14. Recommended Location of Ball Valves

 Select a valve location that allows service to be easily provided for each unit or each refrigerant system.

(1) When adding ball valve for indoor unit

Outdoor unit

Distribution tube

Distribution joint

Main tube

Ball valve (for extension)

Less than 40 cm

Indoor unit for extension

Distribution tube

Main tube

Ball valve (for extension)

Indoor unit for extension

3. Opening and closing the valve

This valve is open at the time of shipment from the factory. If the valve is used for extension, be sure to close it.

4. Installing thermal insulation

The thermal insulation used for a flare-nut type valve is in the form of a bag. When the valve is used for extension, it can be used as-is. If the valve is used for any other purpose, use a box cutter or similar tool to cut away the part shown in the figure at right. The insulation is divided into 2 parts. After performing the leak test, use vinyl tape or other means to temporarily fasten the 2 parts together. Then carry out final finishing.

Valve opened

Spindle

Valve closed

Spindle

Notch

Insulator

1. Location: Install the ball valve at the distribution tube (not main tube).

2. Installation requirements

• Be sure to install the ball valve up-grade to prevent the inadvertent flow of oil.

• Install the ball valve at the shortest distance (within 40 cm) from the main tube. If the diameter of the ball valve is smaller than that of the main tube, use a reducer or the like to reduce the size of the tubing at that location.

• Select a place where it is easy to operate, using careful consideration of the location in advance.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 18

Page 19

1-15. Example of Tubing Size Selection and Refrigerant Charge Amount

Additional refrigerant charging

Based on the values in Tables 1-11, 1-12, 1-13 and 1-16, use the liquid tubing size and length, and calculate the amount of additional refrigerant charge using the formula below.

= [56 × (a) + 26 × (b)] × 10

–3

(a): Liquid tubing Total length of ø9.52 (m) (b): Liquid tubing Total length of ø6.35 (m)

 Charging procedure

Be sure to charge with R410A refrigerant in liquid form.

1. After performing a vacuum, charge with refrigerant from the liquid tubing side. At this time, all valves must be in the “fully closed” position.

2. If it was not possible to charge the designated amount, operate the system in Cooling mode while charging with refrigerant from the gas tubing side. (This is performed at the time of the test run. For this, all valves must be in the “fully open” position.) Charge with R410A refrigerant in liquid form. With R410A refrigerant, charge while adjusting the amount being fed a little at a time in order to prevent liquid refrigerant from backing up.

 After charging is completed, turn all valves to the “fully open” position.

 Replace the tubing covers as they were before.

Required additional refrigerant charge (kg)

CAUTION

1. R410A additional charging absolutely must be done through liquid charging.

2. The R410A refrigerant cylinder has a gray base color, and the top part is pink.

3. The R410A refrigerant cylinder includes a siphon tube. Check that the siphon tube is present. (This is indicated on the label at the top of the cylinder.)

4. Due to differences in the refrigerant, pressure, and refrigerant oil involved in installation, it is not possible in some cases to use the same tools for R22 and for R410A.

Tightening torque for valve stem cap: 19~21 N·m

Tightening torque for valve stem cap: 28~32 N·m

Tightening torque: 34~42 N·m

Tightening torque: 68~82 N·m

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 19

Page 20

Checking of limit density

Density limit is determined on the basis of the size of a room using an indoor unit of minimum capacity. For instance, when an indoor unit is used in a room (floor area 7.43 m

× ceiling height 2.7 m = room volume

20.06 m3), the graph at right shows that the minimum room volume should be 14.1 m3(floor area 5.2 m2) for refrigerant of 4.238 kg. Accordingly, openings such as louvers are required for this room.

Overall refrigerant charge amount for the air conditioner: kg

(Minimum room volume for indoor unit: m3)

4.238 (kg) + 3.5 (kg) = 0.39 (kg/m

) ≥ 0.3 (kg/m3)

20.06 (m

)

Therefore, openings such as louvers are required for this room.

 Obtain charge amount for each tubing size

Note that the charge amounts per 1 meter are different for each liquid tubing size. ø9.52 → LA + LB + LC + LD : 65 m × 0.056 kg/m = 3.64 kg ø6.35 → 1 + 2 + 3 + 4 + 5 : 23 m × 0.026 kg/m = 0.598 kg

Total 4.238 kg

Additional refrigerant charge amount is 4.238 kg.

Be sure to check the limit density for the room in which the indoor unit is installed.

CAUTION

 Example of each tubing length

Main tubing Distribution joint tubing

LA = 40 m Indoor side LB = 5 m 1 = 5 m 4 = 6 m LC = 5 m 2 = 5 m 5 = 5 m LD = 15 m 3 = 2 m

L1 L2

LCLB

Main tube of unit

1st branch

model 22 model 28 model 36 model 56

model 73

Unit distribution tube

2 3 4

Example:

108.0

94.5

81.0

67.5

54.0

40.5

27.0

13.5

10 20 30

Total amount of refrigerant

Min. indoor floor area

(when the ceiling is 2.7 m high)

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)

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 20

Page 21

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 Table 1-19.

 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.

Air delivery will be degraded if the distance from the floor to the ceiling is greater than 3 m (for ASBS type, greater than 3.5 m).

NOTE

Concealed-Duct Type

4-Way Semi-Concealed Type

1 m

2-Way,

Wall-Mounted Type

min.15 cm

Front View

min. 15 cm

Floor-Standing, Concealed Floor-Standing Type

min.

10 cm

min. 100 cm

min. 10 cm

min. 100 cm

Horizontal view Vertical view

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

100

min. 5 cm

min. 1 m

Air intake

Air discharge

Obstacle

Ceiling

Wall

Side view

Semi-Concealed Type Semi-Concealed Slim Type

1-Way Semi-Concealed & Slim Type

Fig. 2-3

Fig. 2-5

Fig. 2-4

NOTE

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 21

Page 22

2-2. Outdoor Unit

AVOID:

 heat sources, exhaust fans, etc. (Fig. 2-6)

 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. 2-7)

 use lug 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. 2-6

Fig. 2-8

Fig. 2-9

Outdoor unit

Heat source

Hot air

Exhaust fan

Anchor bolts (4 pieces)

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. 2-9)

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

vibration and noise.

More than 1 cm

More than 100 cm

More than 1 cm

Inlet side C

Inlet side More than 20 cm

Outlet side

(field supply)

(Ground)

Air direction chamber

(Obstruction above unit)

(Obstruction on inlet side)

CAUTION

 Concerning inlet-side distance “C” (Fig. 2-7)

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. 2-7), or if obstructions are present on all 3 sides *2,

*3, and *4 (Fig. 2-7), then the minimum distance for “A” and “B” is 2 m (Fig. 2-9). Even if there is no wall on the outlet side, a minimum of 100 cm is required.

Fig. 2-7

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 22

Page 23

Fig. 2-10

Fig. 2-11

Fig. 2-12

2-3. Air Discharge Chamber for Top Discharge

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

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

the air discharge outlet and an obstacle.

 the air discharge outlet is facing a sidewalk and

discharged hot air may annoy passers-by. Refer to Fig. 2-10.

2-4. Installing the Unit in Heavy Snow Areas

In locations with strong wind, snow-proof ducting should 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 to the

unit may occur. 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. 2-11)

(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)

With snowproof ducting (High platform)

Outdoor

Duct

Air

Unit

Intake

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 23

Page 24

2-6. Dimensions of Air-Discharge Chamber Reference diagram for air-discharge chamber (field supply) For AES04/05/06MMIH

24029.5

29.5

35537317 70

Rectangular hole

300

240

35317537 70

54425 25

569

1090

997

250

310250

Unit: mm

1 Unit front, air discharge chamber

2 Unit left side, air discharge chamber

3 Unit light side, air discharge chamber

4 Reinforcement brackets, 4 locations

110660170

340

405

380

1015

2020

544

300

Wind

direction

Wind direction

940

1230

Wind direction

300

108997

Wind direction

Unit: mm

2-7. Dimensions of Outdoor Unit with Air-Discharge Chamber (field supply) For AES04/05/06MMIH

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 24

Page 25

More than 2000

More than 400

More than 1500

Installation with intakes facing outletsInstallation with intakes facing

intakes or outlets facing outlets

More than 400

More than 300

More than 200

Min. 1000

Min. 200

The front and both sides must remain open.

Installation in front-rear rows

The front and top must remain open. The obstacles must be no taller than the height of the outdoor unit.

Installation in lateral rows

(2) Multiple-unit installation

The top and both sides must remain open. If there are obstacles to the front and rear of the outdoor unit, the obstacle at either the front or rear must be no taller than the height of the outdoor unit.

(1) Single-unit installation

If an air discharge chamber is used, the space shown below must be secured around the outdoor unit. If the unit is used without the required space, a protective device may activate, preventing the unit from operating.

Required space around outdoor unit

CAUTION

Unit: mm



Reference for air-discharge chamber (field supply) Required space around outdoor unit For AES04/05/06MMIH

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 25

Page 26

444

645

233

732

388

1209

302

101

233

732

1209

764

150

450

500

338

500

730

778

500

Fastened by screws at 13 locations

Fastened by screws at 3 locations (also on reverse side)

Fastened by screw at 1 location (also on reverse side)

Unit anchor hole

(7 – ø 7 hole)

2-8. Dimensions of Snow Ducting Reference diagram for snow-proof vents (field supply) For AES04/05/06MMIH

Unit: mm

1 Unit top, snow-proof vent

2 Unit left side

3 Unit right side

4 Unit reverse side

5 Unit reverse side

6 Unit sides, reinforcement brackets for snow-proof vent

302

732

Wind direction

1230

1209

940

632

405

380 1015

2020

764

645

179

2-9. Dimensions of Outdoor Unit with Snow-Proof Vents (field supply) For AES04/05/06MMIH

Unit: mm

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 26

Page 27

Unit: mm

Reference diagram for snow-proof vents – 1

Space requirements for setting – (1) AES04/05/06MMIH

Outdoor unit

AES04/05/06MMIH

1000 1000

Outdoor unit

AES04/05/06MMIH

HI J

500 300 1000

Min. I Min. I

Min. M

Min. N

Min. H

Min. J

(1) Single-unit installation

(2) Multiple-unit installation (2 or more units)

• Top is open:

•

Top is blocked by an obstacle:

[Obstacle to the front of unit]

Outdoor unit

AES04/05/06MMIH

AB DCEFG

150

Outdoor unit

AES04/05/06MMIH

500 150

200300 300 150 200

Min. C

Min. E

Min. F

Min. E Min. E

Min. L

Min. B

Min. A

Min. D

Min. K

Min. G

[Obstacle to the rear of unit]

(1) Single-unit installation

(3) Multiple-unit installation (2 or more units)

• Top is open:

Note: In cases 2 and 3 the height of the obstacle

must be no taller than the height of the outdoor unit.

• Top is blocked by an obstacle:

(2) Obstacles on both sides



06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 27

Page 28

Reference diagram for snow-proof vents – 2

Space requirements for setting – (2) AES04/05/06MMIH

Outdoor unit

AES04/05/06MMIH

1000 150

Min. 300

Min. 1000 Min. 200

Min. 1500 Min. 2000

Min. 300

Min. 1000

Min. 200

Min. P

Min. O

(1) Single-unit installation

(2) Obstacles on both sides

[Installation in front-rear rows]

[Obstacles to the front and rear of unit]

• The top and both sides must remain open. Either the obstacle to the front or the obstacle to the rear must be no taller than the height of the outdoor unit.

Dimension Q If a snow protection duct is

attached after the unit is

installed, verify that dimension Q is 500 mm or more.

Dimension Q If a snow protection duct is

attached after the unit is installed, verify that dimension Q is 500 mm or more.

• The top and both sides must remain open. Either the obstacle to the front or the obstacle to the rear must be no taller than the height of the outdoor unit.



Unit: mm

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AS1S

3. HOW TO INSTALL THE INDOOR UNIT

 1-Way Air Discharge Semi-Concealed Type

(AS1S Type)

3-1. Suspending the Indoor Unit

(1) Follow the diagrams to make the holes in the ceil-

ing. (Figs. 3-1 and 3-2)

(2) Depending on the ceiling type:

 Insert suspension bolts as shown in Fig. 3-3

 Use existing ceiling supports or construct a suitable

support as shown in Fig. 3-4.

Fig. 3-1

Fig. 3-2

Fig. 3-4

Fig. 3-3

4 – 12 × 37 oblong holes

780 (Ceiling opening dimension)

590

(Ceiling opening dimension)

652 (Suspension bolt pitch)

483

(Suspension bolt pitch)

Flared refrigerant connection outlet (gas tube)

Flared refrigerant connection outlet (liquid tube)

Power wiring outlet

Suspension lug

Drain outlet

560

268

100

115

287

Drain inspection port

Ceiling tiles

Ceiling support

Hole-in-anchor Hole-in-plug

Concrete Insert

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

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 unit, test the strength of each attached suspension bolt.

(3) Cut the ceiling material, if necessary.

(Figs. 3-1 and 3-2)

Unit: mm

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AS1S

Fig. 3-5

Fig. 3-6

Fig. 3-7

Fig. 3-8

177

For fresh air intake (ø125 hole) A

140

Nuts and washers

Suspension bolt

Suspension lug

Upper

Lower

Double nuts

Suspension bolts

Tubing side

Suspension bolts

Ceiling material

If the system requires fresh air to be drawn into the unit, cut and remove the insulation (both externally and internally) at the location shown as in Fig. 3-5.

3-2. Placing the Unit Inside the Ceiling

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

the pitch of the suspension bolts.

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) Thread the 3 hexagonal nuts and 2 washers (field

supply) onto each of the the 4 suspension bolts as shown in Fig. 3-6. 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.

(3) The distance between the unit and the opening of

the ceiling and the distance between the bottom surface of the ceiling and the bottom surface of the flange of the unit should follow the dimensions given in Figs. 3-7 and 3-8.

When making the cuts to the insulation, be careful not to damage the drain pan.

CAUTION

Unit: mm

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AS1S

(4) Adjust the distance between the unit and the

opening in the ceiling to give clearances of 15 mm in the front and back directions and 70 mm in the right and left directions so that the height between the bottom surface of the flange of the unit and the bottom surface of the ceiling is 37 mm, and the airintake side is 5 mm. To check these dimensions for positioning the unit, use the installation gauge which is taped on the unit. (Fig. 3-9)

(5) Confirm all clearances with the installation gauge

as follows:

 Between each side of the unit and the opening of

the ceiling:

15 mm

70 mm

 Between bottom of unit flange and ceiling material:

5 mm (2 corners)

37 mm (2 corners)

Improper clearance can lead to poor mounting of the ceiling panel, causing condensation and dripping. (Fig. 3-9)

3-3. Installing the Drain Piping

(1) Prepare 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. 3-10)

Fig. 3-9

Fig. 3-10

Fig. 3-11

Installation

gaug

Vinyl clamps

Drain insulator (supplied)

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

CAUTION

(2) After checking the drainage, wrap the supplied

packing and drain pipe insulator around the pipe, then secure it with the supplied clamps. (Fig. 3-11)

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

NOTE

 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.

 Tighten the hose clamps so their locking nuts

face upward. (Fig. 3-10)

 Do not use the supplied drain hose bent at a 90°

angle. (The maximum permissible bend is 45°.)

Unit: mm

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AS1S

 Do not install an air bleeder as this may cause

water to spray from the drain pipe outlet. (Fig. 3-12)

 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. 3-13)

 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. 3-14)

 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. 3-15)

 Provide insulation for any pipes that are run

indoors.

Fig. 3-12

Fig. 3-14

Fig. 3-13

Air bleeder

30 cm or less (as short as possible)

50 cm or less

Upward gradient prohibited

Fig. 3-15

Support pieces

CAUTION

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AS1S

3-4. 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) Pour water into the drain pan about 500 cc using a

siphon pump through the air outlet grille. (Fig. 3-16)

(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 drainage check is complete, open the

check pin (CHK) and remount the insulator.

CAUTION

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

The bottom drain port is for use only during test runs and servicing inspections. Do not connect the drain pipe to the bottom drain port.

Drain pan

Siphon pump

Fig. 3-16

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ASBS

Fig. 3-17

Fig. 3-18

Fig. 3-20

Fig. 3-21

 1-Way Air Discharge Semi-Concealed Slim

Type (ASBS Type)

3-5. 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. Refer to Table 3-1 and Figs. 3-17 and 3-19.

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

(2) Follow the diagrams to make the holes in the ceil-

ing. (Figs. 3-18 and 3-19)

Table 3-1

NOTE

Type

Length

28, 36, 56 1,193 1,089

73 1,390 1,286

The distance between the bottom of the suspension bolts and the bottom surface of the ceiling should be 30 to 100 mm. (Fig. 3-24)

(3) Depending on the ceiling type:

 Insert suspension bolts as shown in Fig. 3-20.

 Use existing ceiling supports or construct a suitable

support as shown in Fig. 3-21.

WARNING

(4) Cut the ceiling material, if necessary.

(Figs. 3-18 and 3-19)

Rear

Full-scale dia

ram

Front face

A (Ceiling opening dimension)

B (Suspension bolt pitch)

690(Ceiling

opening dimension)

Air discharge side

Drain hose

Refrigerant tube

(Suspension bolt pitch)

405197

1839

192221

52 (52)

Air-discharge side

Refrigerant tubing joint (liquid tube side)

Refrigerant tubing joint (gas tube side)

Drain connection port

157 28

Suspension lug

88 35

140

157

19815

221 4052

Hole-in-anchor Hole-in-plug

Concrete Insert

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

Ceiling tiles

Ceiling support

Fig. 3-19

Unit: mm

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ASBS

(5) If the system requires fresh air to be drawn into

the unit, cut and remove the insulation (both externally and internally) at the location shown as in Fig. 3-22.

3-6. 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. 3-17)

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

supply) onto each of the the 4 suspension bolts as shown in Fig. 3-23. 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.

(3) The indoor unit should be suspended from the

suspension bolts (Fig. 3-23) so that the distance between the bottom of the suspension lug and the bottom surface of the ceiling is 30 to 40 mm. (Fig. 3-24) Clearance between the indoor unit and the bottom surface of the ceiling is adjustable after the ceiling panel is attached to the unit.

(4) The unit should be adjusted using water level or

as shown in Fig. 3-25 so that the drain pipe side is slanted 5 mm lower than the opposite side.

(5) After completing the adjustment of the clearance,

fasten all upper and lower suspension nuts tightly.

Fig. 3-22

Fig. 3-23

Fig. 3-24

Fig. 3-25

Power supply inlet

Fresh air intake knock-out hole ø125

635

125

Nuts and washers

Suspension bolt

Suspension lug

Upper

Lower

Double nuts

Full-scale installation diagram

Suspension lug

30 to 40 mm

Drain pipe side

Poured water

Vinyl hose

0 to 5 mm

Unit: mm

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ASBS

3-7. Installing the Drain Piping

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

CAUTION

Fig. 3-26a

Fig. 3-26b

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)

(2) After checking the drainage, wrap the supplied

packing and drain pipe insulator around the pipe, then secure it with the supplied clamps. (Fig. 3-26b)

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

NOTE

 Do not use adhesive at the drain connection

port on the indoor unit.

 Insert the drain pipe until it contacts the sock-

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

 Tighten the hose clamps so their locking nuts

face upward. (Fig. 3-26a)

 Do not use the supplied drain hose bent at a 90°

angle. (The maximum permissible bend is 45°.)

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ASBS

 Do not install an air bleeder as this may cause

water to spray from the drain pipe outlet.

(Fig. 3-27)

 If it is necessary to increase the height of the drain

pipe, the pipe can be raised a maximum of 59 cm

from the bottom of the ceiling. Do not raise it any

higher than 59 cm, as this could result in water

leaks. (Fig. 3-28)

 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. 3-29)

 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 con-

nection to the unit. Fasten the pipe to a wall, frame,

or other support as close to the unit as possible.

(Fig. 3-30)

 Provide insulation for any pipes that are run

indoors.

3-8. 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) Short the check pin (CHK) on the indoor control

board and operate the drain pump.

(3) Pour water into the drain pan using a siphon pump

through the air outlet grille. (Fig. 3-31) Check the water flow through the transparent drain pipe and see if there is any leakage.

CAUTION

Fig. 3-27

Fig. 3-28

Fig. 3-29

Fig. 3-30

Fig. 3-31

Air bleeder prohibited

CAUTION

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

59 cm or less

30 cm or less (as short as possible)

Upward gradient

prohibited

Support pieces

Siphon pump

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ASBS

Fig. 3-33

Fig. 3-32

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

check pin (CHK) and remount the insulator.

Cleaning the sub drain pan

Before beginning work, make necessary preparations (e.g., prepare a bucket, wiping cloth, etc.).

(1) Unscrew the 2 screws securing the cover, and

place them on the reverse side to remove the cover.

(2) Release the screw securing the sub drain pan

support L-shape bracket, and remove the bracket while holding the sub drain pan with your hand.

(3) Drain any water and clean the sub drain pan by

tilting it downward. To remove the drain pump, remove the 4 drain pump installation screws, the drain hose, and the wiring.

Removing the side panel

(1) Push the tab on both sides of the side panel

inward (a) to disengage the tab (first stage) and move the panel horizontally (b).

(2) Push the area in the vicinity of the tab (second

stage) inward while holding both sides of the side panel to remove the side panel.

Drain pump installation screw

Drain pump

Drain hose

Sub drain pan

Tab (first stage)

Tab of both sides

Side panel

Tab (second stage)

CAUTION

Use 4 ××8 tapping screws to fasten cover drainage. If the screws used are longer than 8 mm, it may make a hole in the drain pan and cause leakage.

CAUTION

Continuing to work without holding the sub drain pan causes accumulated water in the sub drain pan to leak out.

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AS2S

Fig. 3-34

Fig. 3-35

Fig. 3-36

Suspension bolt pitch B

Ceiling opening dimension A

Suspension bolt pitch

Ceiling opening dimension

Center of panel and ceiling opening

20 600

530

640

Drain outlet

Refrigerant connection outlet (gas tube)

Refrigerant connection outlet (liquid tube)

Outlet for power cord, inter-unit wiring & optional cord

3508

115195

220

29060 – 65

110

600

7030

Hole-in-anchor Hole-in-plug

Concrete Insert

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

 2-Way Air Discharge Semi-Concealed Type

(AS2S Type)

3-9. Suspending the Indoor Unit

(1) Follow the diagrams to make the holes in the ceil-

ing.

Table 3-2

(2) Depending on the ceiling type:

 Insert suspension bolts as shown in Fig. 3-36

 Use existing ceiling supports or construct a suitable

support as shown in Fig. 3-37.

WARNING

(3) Cut the ceiling material, if necessary. (Refer to

Figs. 3-34 and 3-35, and Table 3-2.)

ABCDE

22, 28, 36, 56 1,020 920 840 400 440

73 1,320 1,220 1,140 550 590

Fig. 3-37

Ceiling tiles

Ceiling support

Adjust so that the distance between the indoor unit and the ceiling bottom is 60 to 65 mm.

Unit: mm

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AS2S

Fig. 3-38

Fig. 3-39

Fig. 3-40

Fig. 3-41

(5) If the system requires fresh air to be drawn into

the unit, cut and remove the insulation (both externally and internally) at the location shown as in Fig. 3-38.

3-10. Placing the Unit Inside the Ceiling

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

the pitch of the suspension bolts.

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

supply) onto each of the the 4 suspension bolts as shown in Fig. 3-40. 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.

(3) The distance between the unit and the opening in

the ceiling and the distance between the bottom surface of the ceiling and the bottom surface of the flange of the unit should follow the dimensions given in Figs. 3-39. Use the supplied installation gauge to check.

3-11. 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.

When doing this, leave a gap between the drain socket and the PVC pipe to allow the drainage to be checked. The unit’s transparent drain port allows you to check the drainage. (Fig. 3-41)

When making the cuts to the insulation, be careful not to damage the drain pan.

CAUTION

Nuts and washers

Suspension bolt

Suspension lug

Upper

Lower

Double nuts

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

ø150

ø162

ø138

 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.

 Tighten the hose clamps so their locking nuts

face upward. (Fig. 3-41)

 Do not use the supplied drain hose bent at a 90°

angle. (The maximum permissible bend is 45°.)

Unit: mm

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AS2S

 Do not install an air bleeder as this may cause

water to spray from the drain pipe outlet.

(Fig. 3-43)

 If it is necessary to increase the height of the

drain pipe, the section directly after the con-

nection 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. 3-44)

 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. 3-45)

 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. 3-46)

 Provide insulation for any pipes that are

installed indoors.

Fig. 3-43

Fig. 3-45

Fig. 3-44

Air bleeder prohibited

30 cm or less (as short as possible)

50 cm or less

Upward gradient prohibited

Fig. 3-46

Support pieces

CAUTION

(2) After checking the drainage, wrap the supplied

packing and drain pipe insulator around the pipe, then secure it with the supplied clamps. (Fig. 3-42)

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

NOTE

Fig. 3-42

Vinyl clamps

Drain insulator (supplied)

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AS2S

3-12. 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 the 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 tube cover. (Fig. 3-47)

CAUTION

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

To mount the tube cover, use 4 ××8 tapping screws. (Fig. 3-47) Do not use long screws as they may puncture the drain pan and cause water leakage.

Water for checking drainage

(Approx. 1,200 cc)

Drainage check section

(transparent drain port)

Inspection cover

Fig. 3-47

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ASS

 4-Way Air Discharge Semi-Concealed Type

(ASS Type)

3-13. Preparation for Suspending

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

3-14. Suspending the Indoor Unit

(1) Fix the suspension bolts securely in the ceiling

using the method shown in the diagrams (Figs. 348 and 3-49), 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. 3-49 and Table 3-3 to make the holes

in the ceiling.

Table 3-3

Unit: mm

(3) Determine the pitch of the suspension bolts using

the supplied full-scale installation diagram. The diagram and table (Fig. 3-50 and Table 3-4) show the relationship between the positions of the suspension fitting, unit, and panel.

Table 3-4

Unit: mm

Fig. 3-48

Fig. 3-49

Fig. 3-50

Hole-in-anchor Hole-in-plug

Concrete Insert

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

Type

788

723

885

Length

28, 36, 56, 73, 106, 140

113

173

210

256

106, 140

88319

113

Type

Length

28, 36, 56, 73

D (ceiling opening dimension)

C (ceiling opening dimension)

A (suspension bolt pitch)

B (suspension bolt pitch)

Suspension lug

Refrigerant tubing joint (liquid side)

Refrigerant tubing joint (gas side)

(VP25)

Drain outlet

(other side)

Note: For DC Fan Tap Change Procedure for 4-Way

Cassette, see page 128.

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ASS

Fig. 3-51

Fig. 3-52

3-15. 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. 3-51)

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. 3-51.

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

supply) onto each of the 4 suspension bolts as shown in Fig. 3-52. 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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ASS

3-16. 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. 3-53)

 Insert the drain pipe until it contacts the socket,

as shown in Fig. 3-53, 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. Please make sure that the bead is not covered by the hose band. (Fig. 3-53)

(2) After checking the drainage, wrap the supplied

packing and drain pipe insulator around the pipe. (Fig. 3-54)

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. 3-53)

CAUTION

 Do not install an air bleeder

as this may cause water to spray from the drain pipe outlet. (Fig. 3-55)

Fig. 3-53

Fig. 3-54

Fig. 3-55

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

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 45

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ASS

Fig. 3-56

30 cm or less (as short as possible)

64 cm or less

Fig. 3-57

Upward gradient prohibited

Fig. 3-58

Fig. 3-59

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. 3-56)

 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. 3-57)

 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. 3-58)

 Provide insulation for

any pipes that are run indoors.

3-17. 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. 3-59)

(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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AWS

 Wall-Mounted Type (AWS Type)

3-18. 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. 3-61. Select the direction which will provide the shortest run to the outdoor unit.

3-19. 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. 3-62)

(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. 3-63)

(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. 3-64)

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

indoor side only) and insert in the wall. (Fig. 3-65)

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

NOTE

Fig. 3-60

Fig. 3-61

Fig. 3-62

Fig. 3-63

Fig. 3-64Fig. 3-65

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

ø80

Left tubing

Right-rear tubing (recommended)

ht tubin

Left-rear tubing

Remove the rear panel

Press

Screws used during transportation

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 47

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AWS

Fig. 3-66

3-20. 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. 3-66) 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. 3-67)

(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. 3-68)

3-21. 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. 3-69)

(2) Remove the filter. (Fig. 3-69)

(3) Adjust the flap so that it is horizontal. (Fig. 3-70)

(4) Open the installation screw covers below the grille

(3 locations). (Fig. 3-70)

(5) Remove the screws. (Fig. 3-70)

(6) Remove the grille. (Fig. 3-71)

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. 3-67

Fig. 3-68

Fig. 3-69

Fig. 3-70

Fig. 3-71

4.8 mm dia. hole

Rawl plug

Intake grille

Filter

Flap

Open the

rille

Installation screw cover

Remove the grille

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AWS

3-22. 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. 3-72)

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 73 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. 3-73)

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. 3-74)

Raising the clamp to lift up the indoor unit will facilitate this work. (Fig. 3-75)

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 3-18. “Removing the Rear Panel from the Unit (Fig. 3-60).” Then lift up the indoor unit to remove it.

3-23. Shaping the Tubing

Right-rear tubing

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

go into the hole. (Fig. 3-76)

(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. 3-72

Frame

Right tubing outlet

When left and right side tubing

Fig. 3-73

Installation tabs

Fig. 3-74

Press

Fig. 3-75

Clamp

Fig. 3-76

Insulating

tape

Refrigerant

tubing

Rear panel tab

Plastic cover

Indoor and outdoor unit connection wiring

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 49

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AWS

Fig. 3-79

Fig. 3-77

Insulation

Fig. 3-78

Insulating tape

Rear panel

Inter-unit wiring

Refrigerant tubing

Drain hose

Indoor unit

Slant

Refrigerant tubing

3-24. Installing the Drain Hose

a) The drain hose should be slanted downward to the

outside. (Fig. 3-79)

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.

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ACS

 Ceiling-Mounted Type (ACS Type)

3-25. Required Minimum Space for Installation and Service

(1) Dimensions of suspension bolt pitch and unit

36, 56

106, 140

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

Gas tubing

Liquid 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

(Liquid tubing • Gas tubing)

123

110 76

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. 3-80

Fig. 3-82

Fig. 3-81

*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

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 51

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ACS

(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. 3-84

Fig. 3-83

Fig. 3-85

3-26. 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. 3-84).

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. 3-85.

b) Use existing ceiling supports or construct a suit-

able support as shown in Fig. 3-86.

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. 3-85 and 3-86. The distance of each exposed bolt must be of equal length within 50 mm. (Fig. 3-87)

Hole-in-anchor Hole-in-plug

Concrete Insert

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

Fig. 3-86

Fig. 3-87

Ceiling tiles

Ceiling support

unit

Ceiling surface

Fixture

Within

50 mm

Unit: mm

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 52

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ACS

Fig. 3-88a

Slide

Hinge

Air-intake grille

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

Screw

Latch

Fig. 3-88b

Slide toward front side

Side panel

Fig. 3-89a

Unit

Suspension bolt (field supply)

Ceiling surface

Washer (supplied)

Double nut (field supply)

Fixture

Fig. 3-89b

Unit

Suspension bolt (field supply)

Washer (supplied)

Washer (field supply)

Double nut (field supply)

Fig. 3-89c

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. 3-88a. Then remove both side panels sliding them along the unit toward the front after removing the 2 attachment screws. (Fig. 3-88b)

(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. 3-89a and 3-89b)

(7) Suspend the indoor unit as follows:

a) Mount 1 washer and 2 hexagonal nuts on each

suspension bolt as shown in Fig. 3-89c.

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ACS

Fig. 3-90

Fig. 3-91

Fig. 3-92

Indoor side

Outdoor side

Fig. 3-93

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. 3-90)

c) Tighten the 2 hexagonal nuts on each suspen-

sion bolt to suspend the indoor unit as shown in Fig. 3-91.

The ceiling surface is not always level. Please 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. 3-92)

(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. 3-93)

NOTE

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

NOTE

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ACS

3-27. 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. 3-94a)

3-28. 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. 3-82.

* When routing the tubing out through the top, the

optional L-shape tubing kit is required.

3-29. 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. 3-94a

Rear cover

CAUTION

 Attach so that the hose

band fastener is on the side of the drain port. (Fig. 3-96)

 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. 3-94b

Fig. 3-94c

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ACS

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. 3-96

Good

Min. 1/100

Not good

Fig. 3-95

 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. 3-95)

 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 of the optional part.)

* If the drain hose is routed

through the left side, refer to Fig. 3-94b, and follow the procedure above to install the hose. Rettach the rubber stopper that was earlier removed 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

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 56

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ACS

* 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. 3-94a. For the method used to insert the wiring, refer to the figure below. (Fig. 3-97)

(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. 3-97

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 57

Page 58

ADS

Fig. 3-98

Fig. 3-99

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 (ADS Type)

3-30. 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. 3-98 and Table 3-5.

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

mm) for checking and servicing the electrical system.

 Fig. 3-99 and Table 3-6 show the detailed dimensions

of the indoor unit.

Table 3-5

Table 3-6

Type

A (Length)

Number of duct flanges

106, 140

1,560

1,080

22, 28, 36, 56

780

Dimension

Type

22, 28, 36, 56

106, 140

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 (liquid tube) Refrigerant tubing joint (gas 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)

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

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 58

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ADS

Fig. 3-100

3-31. Suspending the Indoor Unit

Depending on the ceiling type:

• Insert suspension bolts as shown in Fig. 3-100

• Use existing ceiling supports or construct a suitable support as shown in Fig. 3-101.

Hole-in-anchor Hole-in-plug

Concrete Insert

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

Fig. 3-101

Fig. 3-102

Fig. 3-103

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. 3-98 and Table 3-5) 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. 3-100. (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. 3-102 and 3-103. 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.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 59

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ADS

 Fig. 3-104 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. 3-104

Fig. 3-105a

Fig. 3-105b

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)

3-32. 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. 3-105a)

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. 3-105a)

(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. 3-105b)

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

NOTE

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 60

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ADS

Fig. 3-106

Fig. 3-107

Fig. 3-108

Fig. 3-109

Fig. 3-110

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. 3-107)

 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. 3-108)

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

3-33. 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. 3-106)

CAUTION

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

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 61

Page 62

ADS

NOTE

HT : Using 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)

56 Type22, 28, 36 Type

Indoor Fan Performance

73 Type 106 Type 140 Type

3-34. 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. 3-111.

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

cover plate.

Fig. 3-111

Fig. 3-112

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 73 type, the air flow is 18 m

/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.

NOTE

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 62

Page 63

ADPS

Fig. 3-114

 Concealed-Duct High Static Pressure Type

(ADPS Type)

3-35. Required Minimum Space for Installation

and Service (73, 106, 140 Type)

 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. 3-113.

 It is recommended that space be provided (600 ×

600 mm) for checking and servicing the electrical system.

 Fig. 3-114 and Table 3-7 show the detailed dimen-

sions of the indoor unit.

Air suction side

Refrigerant tubing

Min. 600

Space for

service

Min. 130

Electrical

component

box

Inspection access (600 × 600)

(73 Type)

Min. 550

Min. 580

(106, 140 Type)

Suspension bolt pitch

980

940

130 290

500

Min. 600

(Space for service)

Drain pan

Ceiling face

310

100

300

500 70

35 940 35

80 290

(Suspension bolt pitch)

130

23 5

7×100=700

4×100=400

500

980 (Suspension bolt pitch)

4-ø20 hole for suspension bolt

Drain pan

793

940

16 - ø3.2

Electrical component box

22 - ø3.2 (Hole for full circumference)

(Hole for full circumference)

(274)

100

1010

620

55 55

100

Refrigerant liquid line (ø9.52 or ø6.35) Refrigerant gas line (ø19.05 or ø15.88) Power supply entry Drain connection (25A, O.D. 32 mm) Duct connection for suction Duct connection for discharge

Fig. 3-113

Unit: mm

140

73, 106

420

450

395

425

Length

Type

Unit: mm

Table 3-7

Unit: mm

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 63

Page 64

ADPS

Fig. 3-115

Fig. 3-116

Fig. 3-117

Hole-in-anchor Hole-in-plug

Concrete Inser t

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

Ceiling tiles

Ceiling support

Suspension bolt

20~50 mm

Hexagonal nuts and washers

(2 sets)

3-36. Suspending the Indoor Unit

Depending on the ceiling type:

 Insert suspension bolts as shown in Fig. 3-115

 Use existing ceiling supports or construct a suitable

support as shown in Fig. 3-116.

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 suport 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. 3-113)

(2) Screw in the suspension bolts allowing them to

protrude from the ceiling as shown in Fig. 3-115. (Cut the ceiling material, if necessary.)

(3) Suspend and fix the indoor unit using the 2 hexag-

onal nuts (field supply) and special washers (supplied with the unit) as shown in Fig. 3-117.

Air-outlet grille

Air-intake grille

Fig. 3-118

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 64

Page 65

ADPS

Fig. 3-119a

Fig. 3-119b

Fig. 3-120

Min. 50 mm

Inspection plu

Min.

100 mm

Good

Min. 1/100

Not good

3-37. Installing the Drain Piping

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

the drain and use the supplied drain socket to prevent water leaks. The PVC pipe must be purchased separately. When doing this, apply adhesive for the PVC pipe at the connection point.

(2) If connecting a drain joint (supplied) to the thread-

ed drain port, first wrap the drain port threads with sealing tape, then connect the joint. (Fig. 3-119a)

(3) After connecting the drain pipe securely, wrap

insulator (field supply) around the pipe.

(4) Ensure the drain pipe has a downward gradient

(1/100 or more) and prepare traps as indicated in Fig. 3-119b.

(5) Also, in another part of the pipe arrangement, pre-

pare traps with an inspection plug to clean dust or debris that may cause leaking of water. (Fig. 3-120)

(6) After connecting the drain piping, slowly pour

water into the drain pan to check that the water drains smoothly.

Sealing tape

Drain joint (supplied)

Drain pan

Drain opening (25A male screw)

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 65

Page 66

ADPS

3-38. Caution for Ducting Work

 This unit has high static pressure (applicable external

static pressure Max. 167 to 216 pa (17–22 mm Aq). In the case of small pressure resistance (for instance, a short duct), install a damper for adjusting air flow volume as air flow volume / air flow noise increases.

 If the air conditioner is to be installed in a room

such as an office or meeting room which needs a low sound level, provide a supply and return noise absorption chamber with an acoustic liner.

 Include an air filter (field supply) at the return duct.

Indoor Fan Performance

How to Read the Diagram

The vertical axis is the External Static Pressure (mmAq) while the horizontal axis represents the Air Flow (m

/minute). The characteristic curve for the “H,” “Med,” and “Lo” fan speed control. The nameplate values are shown based on the “H” air flow. Therefore in the case of 73 Type, the flow is 23 m3/minute, while the External Static Pressure is 19 mmAq at “H” position. If the external static pressure is too great (due to long extension of duct, for example), the air flow volume may drop too low at each air outlet.

External Static Pressure

Limit line

Air Flow (m3/minute)

25 30

(Pa)

100

150

200

250

(mmAq)

Limit line

25 30 35

Air Flow (m3/minute)

External Static Pressure

(Pa)

100

150

200

250

(mmAq)

Limit line

H,M

30 35 40

Air Flow (m3/minute)

External Static Pressure

(Pa)

100

150

200

250

(mmAq)

NOTE

73 Type

106 Type 140 Type

At shipment

Fig. 3-121

NOTE

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 66

Page 67

AFS

AFNS

 Floor-Standing Type (AFS Type)

Concealed Floor-Standing Type (AFNS Type)

3-39. Required Minimum Space for Installation and

Service

Install the unit where cooled or heated air from the unit can circulate well in the room. Do not put obstacles which may obstruct the air flow in front of the air intake and outlet grilles.

Ensure there is adequate space for maintenance of the electrical component box, air filter and, refrigerant tubes.

3-40. Dimensions and Part Names

Floor-Standing Type (AFS Type)

4-ø12 holes (for fastening the indoor unit to the

floor with screws)

Air filter

Refrigerant connection outlet (liquid tube)

Refrigerant connection outlet (gas tube)

Level adjusting bolt

Drain outlet (20 A)

Power cord outlet (downward, rear)

Refrigerant tubing outlet (downward, rear)

Location for mounting the remote controller (remote

controller is attachable in the room)

NOTE

Fig. 3-122

Fig. 3-123

min. 10 cm

min. 100 cm

min. 10 cm

min. 100 cm

Horizontal view Vertical view

54 54

161

100

177

230

615

25 R

155

107

205

260

213

156

C B A

Side panel Refrigerant tubing space for downward tubing

Air inlet

Rear-tube outlet

Air outlet

Table 3-8

Type

Length

A B C Liquid Gas

tube tube

22, 28, 36 1065 665 632 9.52 12.7

56, 73 1380 980 947 9.52 15.88

Unit: mm

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AFS

AFNS

Fig. 3-124

Concealed Floor-Standing Type (AFNS Type)

4-ø12 holes (for fastening the indoor unit to the floor with screws)

Air filter

Refrigerant connection outlet (liquid tube)

Refrigerant connection outlet (gas tube)

Level adjusting bolt

Drain outlet (20A)

Flange for air-outlet duct

Table 3-9

Type

Length

A B C D Liquid Gas

tube tube

22, 28, 36 858 692 672 665 9.52 12.7

56, 73 1173 1007 1002 980 9.52 15.88

229

155

125

260

402

539

147

205

100

B C

166

374

147

616

Air outlet

(

Internal dimension)

Air inlet

Make an opening in the housing of the unit so that maintenance service can be peformed on the electric component box, air filter, refrigerant tubing connection, and drain pipe.

NOTE

Unit: mm

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 68

Page 69

AFS

AFNS

Fig. 3-125

Fig. 3-126

Front panel

Tab

Side panel

Dew-prevention

heater

Fixture

Chain

Lead-wire connector

(2p Red)

Front panel

3-41. Removing and Attaching the Front Panel

(Floor-Standing Type)

A dew-prevention heater is secured behind the front panel. When removing or attaching the panel, take care not to damage the lead wire to the heater.

How to remove the front panel

(1) Remove the 2 screws at the lower part of the front

panel.

(2) Holding A at the upper right of the unit, push up at

B at the lower right of the panel. The right side of the front panel is removed. Then remove the left side of the front panel following the same procedure.

(3) Disengage the lead wire connector (2P red) for the

dew-prevention heater.

(4) Remove the chain connecting the front panel of

the unit by unhooking it from the fixture attached to the panel.

How to attach the front panel

(1) Hook the chain to the fixture of the front panel.

(2) Connect the lead wire connector.

(3) Align the slots at the lower part of the front panel

to the tabs at the lower part of the indoor unit and put the upper trim tab of the front panel on the groove of the unit. Then press down the panel.

(4) Insert the 2 screws at the lower part of the front

panel.

3-42. Installing the Refrigerant Tubing

(1) When connecting the wide tube use the supplied

tubing.

(2) Tubes can be extended in 2 directions: downward

and at rear.

For floor-standing type

 When a rear tube is required, it can run through the

rear-tube outlet of the rear panel.

 When a downward tube is required, refer to the

opening dimensions shown in Fig. 3-127.

NOTE

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 69

Page 70

AFS

AFNS

Fig. 3-127

Fig. 3-128

CAUTION

Insulate both gas and liquid tubes.

 To insulate tubes

(1) Wrap the flare nuts with the supplied white insulat-

ing tape.

(2) Wrap the flare nuts with the supplied flare insula-

tor.

(3) Fill the clearance between the union insulator and

flare insulator with black insulating tape. Fasten both ends of the flare insulator with the supplied vinyl clamps.

167

177

Holes for fixing the unit to the floor

Rear-tube outlet

Refrigerant tubing space for downward tubing

Insulating tape (black)

Insulating tape (white)

Flare insulator

Insulator

Flare nut

Vinyl clamps

Insulating tape

Unit: mm

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 70

Page 71

AFS

AFNS

Fig. 3-129

Fig. 3-130

Fig. 3-131

Fig. 3-132

Drain hose

Drain pipe (PVC)

Drain hose (supplied)

Drain insulator (supplied)

Vinyl clamp (supplied)

Hose band (supplied)

Hard PVC pipe VP20 (field supply)

Insulating tape (supplied)

Vinyl clamps

(supplied)

Drain hose insulator (field supply)

Lead wire guide

Remote controller

Screw

3-43. Installing the Drain Piping

(1) When rear-side drain piping is required bend the

drain hose attached to the indoor unit by 90°. Connect a drain pipe (field supply) to the drain hose through the rear tubing outlet in the rear panel. Use a hard PVC pipe (VP20) for the drain piping.

(2) Ensure that the drain pipe has a downward gradi-

ent of 1/100 or more and that there are no water traps.

(3) Provide insulation for the drain pipe.

(4) After the drain piping is completed, pour water

into the drain pan to check if the water drains smoothly.

(5) Remove any dust or debris in the drain pan so that

the pipe is not clogged.

3-44. Installing the Remote Controller

A remote controller (optional wired remote controller) can be mounted in the indoor unit (floor-standing type).

(1) Remove the cover of the optional wired remote

controller. (Fig. 3-131)

(2) Remove the front panel. Remove the screws and

fixture. (Fig. 3-132)

(3) Place the remote controller into the space in the

unit as shown in Fig 3-132. Assemble the lead wires of the remote controller to its rear side center and route them to the lead wire guide.

(4) Secure the fixture using the supplied screws.

CAUTION

Water leaks may occur if the drain pipes are connected inadequately.

To remove the cover from the remote controller, insert a screwdriver between the cover and the controller as shown in the figure above, and turn the screwdriver in the direction indicated by the arrow.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 71

Page 72

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

940

296

150

219

13 13

15 10380

405

340

1313

170 660 110

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.

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Page 73

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 failure,

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 manufacturer, 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

AES04MMIH 16 m 25 A AES05MMIH 24 m 35 A AES06MMIH 20 m 35 A

4 mm 6 mm 6 mm

Time delay fuse or circuit capacity

Indoor unit

Time delay fuse or

circuit capacity

(B) Power supply

2.5 mm

AWS Max. 150 m 10 – 16 A

ADPS Max. 60 m 10 – 16 A

AS1S, ASBS, AS2S, ASS,

ACS, ADS, AFS, AFNS

Max. 130 m 10 – 16 A

Type

NOTE

* With ring-type wire terminal.

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 73

Page 74

5-3. Wiring System Diagram

1 2

WHT

Remote controller

BLK

WHT

Remote controller

Group control:

BLK

WHT

Remote controller

Indoor unit (No. n)

Indoor unit (No. 1)

Indoor unit (No. 2)

Indoor unit (No. 3)

Outdoor unit INV unit

Power supply

220–240V-1N 50Hz

Ground

L N

BLK

Power supply 220-240V 50Hz

Ground

Power supply 220-240V 50Hz

Ground

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 diagram.

(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.

(4) Regarding the R.C. address setting, refer to page

101. Auto. address setting can be executed by remote controller automatically. Refer to page 102 – 106.

1(L)2(N) Power

supply

Inter-unit

control wiring

Remote

controller

8P terminal board

R1 R2

1 2 U1 U2 R1 R2

AS1S, ASBS, ADS,

ADPS, AFS, AFNS Type

AWS Type

1(L)2(N)

123 45

Power

supply

Inter-unit

control wiring

5P terminal board

1(L) 2(N) Power

supply

U1 Inter-unit

control wiring

Remote

controller

AS2S, ASS, ACS Ty pe

7P terminal board

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 74

Page 75

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)

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 75

Page 76

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 Diagram.”

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)

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Page 77

REM

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 (3 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

Supplied parts Supplied partsNo.No.

Q’tyQ’ty

Accessories for remote controller switch

Unit: mm

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 77

Page 78

REM

6-2. Basic Wiring Diagram

CAUTION

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

 Use shielded wires for remote control wiring and

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

Fig. 6-3

Fig. 6-4

Shielded wire

Ground

: Ground

Outdoor unit

Indoor unit

No. 8

Indoor unit

No. 3

Indoor unit

No. 2

Indoor unit

No. 1

Group control

Connection wiring for group control

Standard remote control

Multiple remote control

1 1

Inter-unit control wiring

Terminal 3P

Remote control wiring

Inter-unit wiring

Group-control wiring

(Main) (Sub)

Indoor unit 8

Indoor unit 7

Indoor unit 2

Indoor unit 1

6-3. Wiring System Diagram for Group Control

This diagram shows when several units (maximum of

8) 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. 8

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. 8

Indoor unit

No. 3

Connection wiring for group control

Fig. 6-5

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 78

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REM

Cautions on group control

 Group control within the same refrigerant tub-

ing system is recommended.

[Tubing system which is NOT recommended]

<Example 1> In the MULTISET system, group control

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

While Group 4 is in heating operation, if later Group 3 begins cooling operation, indoor units 1, 2 of Group 3 can be operated, but the indoor units 3-6 of Group 4 cannot operate.

NOTE

45621

21321321

Indoor Units

Outdoor units

Group 4

Group 3 Group 2 Group 1

Remote controller

Group address

Tubing system 1

Tubing system 2

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 (Main) Remote Controller (Sub)

Remote controller address connector

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. The sub-remote controller will also operate when connected to the indoor unit (indoor unit 2 or 3).

Fig. 6-6

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 79

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REM

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 adapter (optional) is required to convert the signal for use at the no-voltage A contact.

NOTE

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 80

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REM

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

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 81

Page 82

7. HOW TO PROCESS TUBING

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 the end of the copper tube with a

tube reamer or file. This process is important and should be done carefully to make a good flare. (Fig. 7-1)

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 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

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 82

Page 83

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 in the flare nut lightly at first to obtain a smooth match. (Fig. 7-5)

 Adjust the shape of the liquid tube using a tube

bender at the installation site and connect it to the 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 Out-

door 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 refrigerant leakage and cause in injury or asphyxiation to room occupants.

 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

ø6.35 (1/4")

ø9.52 (3/8")

ø12.7 (1/2")

ø15.88 (5/8")

ø19.05 (3/4")

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)

100 – 120 N

(1000 – 1200 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 liquid tube,

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

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 83

Page 84

Fig. 7-8

Fig. 7-9

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 gas 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. 7-8)

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

Vinyl clamps (supplied)

Flare nut

The procedure used for installing the insulator for both gas and liquid 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)

Gas tubing

Liquid tubing

Insulation

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 use the valves and to allow the panels to be attached and removed.

Fig. 7-7

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 84

Page 85

Fig. 7-10

Fig. 7-11

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 the 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. 7-10)

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. 7-11)

NOTE

Insulated tubes

Drain hose

Clamp

Tubin

Apply putty here

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 85

Page 86

Fig. 8-1

Fig. 8-2

8. AIR PURGING

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 liquid and gas 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 gas tube and liquid tube service valves on the outdoor unit. Note that both liquid and gas tube service valves on the outdoor unit are kept closed at this stage.

Leak test

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

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

(2) Pressurize the system to no more than 36 kgf/cm

G with dry nitrogen gas and close the cylinder valve when the gauge reading reaches 36 kgf/cm2G. Then, test for leaks with liquid soap.

Manifold gauge

Outlet Inlet

Vacuum pump

Manifold valve

Pressure gauge

Lo Hi

Charge hose

Outdoor unit

Liquid tube

Gas tube

Nitrogen gas cylinder (In vertical standing position)

Open

Cylinder valve

Service port ø7.94 m

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.

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. (Refer to the previous page.)

Fig. 8-3

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 86

Page 87

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

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

(4) 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.

Evacuation

(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. The operation time for evacuation varies with the tubing length and capacity of the pump. The following table shows the amount of time for evacuation:

The required time in the above table is calculated based on the assumption that the ideal (or target) vacuum condition is less than 667 Pa (–755 mm Hg, 5 Torr).

(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

Lo Hi

Vacuum pum

Outdoor unit

Liquid tube

Gas tube

Open

Service port ø7.94 m

Required time for evacuation

when 30 gal/h vacuum pump is used

If tubing length is If tubing length is

less than 15 m longer than 15 m

45 min. or more 90 min. or more

NOTE

Fig. 8-4

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 87

Page 88

Fig. 8-5

Fig. 8-6

Charging additional refrigerant

 Charging additional refrigerant (calculated from the

liquid tube length as shown in Section 1-7 “Additional Refrigerant Charge”) using the liquid 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 gas tube service valve with the system in cooling operation mode at the time of test run. (Fig. 8-6)

Finishing the job

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

valve stem counter-clockwise to fully open the valve.

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

clockwise to fully open the valve.

(3) Loosen the charge hose connected to the gas

tube service port (for ø7.94 mm tube) slightly to release the pressure, then remove the hose.

(4) Replace the service port cap on the gas tube ser-

vice port and fasten the cap securely with an monkey spanner or box wrench. This process is very important to prevent gas from leaking from the system.

(5) Replace the valve caps at both gas tube and liquid

tube service valves and fasten them securely.

This completes air purging with a vacuum pump. The air conditioner is now ready for a test run.

CAUTION

Use a cylinder designed for use with R410A respectively.

CAUTION

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

Valve

Liquid

Manifold valve

Pressure gauge

Lo Hi

Outdoor unit

Liquid tube

Gas tube

Open

R410A

Outdoor unit

Liquid tube

Gas tube

Open

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Page 89

AS1S

9. HOW TO INSTALL THE CEILING PANEL

 1-Way Air Dischange Semi-Concealed Type (AS1S Type)

9-1. Installing the Ceiling Panel

(1) Screw the M5 × 40 screws supplied (in the unit packing) into 4 points on the flange surface of the unit bolted to

the ceiling. Insert the screws so that the distance between the bottom of the screw head and the bottom surface of the flange is at least 19.05 mm. (Fig. 9-1)

(2) Next, lift the ceiling panel in this position so that the 4 protruding screws pass through the key hole-shaped

openings in the panel, then shift the panel sideways until it is caught by the screws.

(3) Keeping the ceiling panel in this position, check to see if the joining edge of the ceiling panels are in line with

those of the ceiling material. If they are not in line, remove the ceiling panel and finely adjust the suspension position of the unit.

(4) Once the joining edges are properly aligned with each other, install the supplied stoppers into the key hole-

shaped openings, then insert the 4 screws until the ceiling panel touches the flange surface of the unit.

Fig. 9-1

Unit

Ceiling face

Ceiling panel

Air-intake grille

Chain

Hook

Screw

M5 × 40 small screw (4)

Key hole-shaped opening

Stopper

20 mm

123

Stoppers (2) are supplied with the ceiling panel at the time of shipment.

NOTE

9-2. How to Use the Stoppers

(1) Pass through screws on the unit into the key hole-shaped openings on the panel.

(2) Then, shift the panel sideways until it is caught by the screws.

(3) Insert the stoppers in the direction of the arrow as shown, confirm that the bent portion of each stopper is

securely in the hole, A and B, then tighten the screw. (Fig. 9-1)

Accessory

Mounting

Insertion direction

Accessory part

Insertion direction

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 89

Page 90

ASBS

 1-Way Air Discharge Semi-Concealed Slim Type

(ASBS Type)

9-3. Installing the Ceiling Panel

(1) Hook the 2 panel catches of the ceiling panel to

the tubing side (stationary side) of the indoor unit. Then, press up on the opposite side to engage the level catch to install by opening the level catch (pressed with fingers.) (Fig. 9-2) Make sure the ceiling panel is mounted correctly.

(2) Fasten the M6 screws (supplied) into 4 points as

shown in Fig. 9-3.

(3) Install the wiring connector from the ceiling panel to the connector from the indoor unit.

If the connector is not connected, a misoperation signal (“P9” on the remote control display) will be displayed when the unit is turned on.

NOTE

Never attempt to move the

louver by hand.

Since the louver has an

automatic air-sweeping

mechanism, it may be

damaged.

CAUTION

Panel catch (level catch side)

Panel catch (stationary side)

Side panel

Connector (panel side)

Connector (unit side)

Electrical component box

Side panel

Fig. 9-2

Fig. 9-3

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 90

Page 91

ASBS

Fig. 9-4

Suspension bolt

Nut, washer

Ceiling material

Ceiling panel

Fig. 9-5

Center recess

Center claw

Claw

Side panel

Safety cord

(4) Check to see that the ceiling panel is properly

aligned with the seamline of the ceiling. If not, readjust the indoor unit by adjusting the nuts to the proper suspension point. (Fig. 9-4)

(5) For attaching and removing the side panels, see

Fig. 9-5.

 Attaching the side panels

Put the center claw of the side panel into the center recess of the indoor unit. Pressing 2 claws of the both sides of the side panel toward the inside, press the side panel onto the indoor unit.

 Removing the side panels

Remove the side panel by pressing the 2 claws at both ends of the panel, disengage the claws and slide the panel horizontally.

When attaching the side

panels, be sure to hook

the safety cords in the

holes of the side panels.

CAUTION

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Page 92

AS2S

 2-Way Air Discharge Semi-Concealed Type

(AS2S Type)

9-4. Before Installing the Ceiling Panel

(1) Adjust the distance between the unit and the sur-

face of the ceiling (60 mm) using the 2 hexagonal nuts as shown in Fig. 9-6 while following the installation gauge.

(2) Remove the air-intake panel and the air filter from

the ceiling panel as shown in Figs. 9-7 and 9-8.

How to remove the air-intake panel (from either side). (Fig. 9-8)

(1) Push in. → (2) Slide. → (3) Pull. → (4) Remove.

Fig. 9-6

Indoor unit

Ceilin

Fig. 9-7

Fig. 9-8

Electrical component box

Ceiling panel

Indoor unit

M4 × 25 screw, 2 pcs.

(Only 73 Type)

M5 × 40 screw, 4 pcs.

Latch

Air filter

Air-intake panel

Filter installation section

Never touch or attempt to move the air-direction louver by hand or you may damage the unit. Instead, use the remote controller if you want to change the direction of air flow.

CAUTION

Air-intake panel

Unit: mm

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Page 93

AS2S

Fig. 9-9

Panel catch (level catch side)

Panel catch (stationary side)

Fig. 9-10

Electrical component box

Connector

9-5. Installing the Ceiling Panel

(1) Lift the ceiling panel and position it to align the

panel catches with the catch recesses of the indoor unit.

(2) Hook the stationary catch first and then press up

on the opposite side to engage the level catch to install as shown in Fig. 9-9.

The ceiling panel must be mounted correctly. Listen for the click to determine it is securely shut.

(3) Next, check to see that the ceiling panel is proper-

ly aligned with the seamline of the ceiling. If it is not, remove the ceiling panel and slightly readjust the indoor unit body to the proper suspension point.

(4) When the ceiling panel has been properly aligned,

use the 4 supplied mounting screws (M5) with washers to permanently fasten the ceiling panel.

(5) Install the wiring connector from the ceiling panel

to the connector in the electrical component box of the indoor unit (8P connector if heat pump model). After installing the connector, use the clamp on the body of the indoor unit to secure the wiring.

If the connector is not connected, a misoperation signal (“P9” on the remote control display) will be displayed when the unit is turned on.

(6) Install the air filter and air-intake grille by perform-

ing the steps in Figs. 9-7 and 9-8 in reverse.

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.

Release one side of the panel by pressing the panel catch in the direction of the arrow. (See Caution.) Completely remove the ceiling panel by disengaging the stationary catch. (Fig. 9-9)

NOTE

When the air filter is removed, the rotator and live parts are exposed at the openings and these can cause a danger. Therefore be particularly careful.

CAUTION

06-065 Mini ECO-i II for ARGO 2/8/06 4:37 PM Page 93

Page 94

ASS

 4-Way Air Discharge Semi-Concealed Type

(ASS 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. 9-11

Wing

Fig. 9-12a

Fig. 9-12b

Fig. 9-14

9-7. Before Installing the Ceiling Panel

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

ceiling panel. (Figs. 9-12b, 9-13 and 9-14)

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

intake grille. (Fig. 9-12b)

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

tion shown by the arrows to open the grille. (Fig. 9-13)

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. 9-14)

(2) Removing the corner cover

a) Slide the corner cover to the direction shown

by the arrow to remove the corner cover. (Fig. 9-15).

Corner cover

Ceiling panel

Strap

Push

Corner cover

Fig. 9-15

Air-intake grille

Ceiling panel

Air-intake grille hinge

Fig. 9-13

Latch

Screw

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ASS

CAUTION

9-8. 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. 9-16)

 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. 9-16)

(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. 9-17)

(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. 9-18)

Square hole in unit

Temporary fastener

Push when you remove

Temporary fastener

Fig. 9-16

Drain tubing corner

Refrigerant tubing corner

Panel installation hole (4 locations)

Ceiling panel

Washer head screws

DRAIN mark

REF. PIPE mark

Fig. 9-17

Do not allow

gaps

Ceilin

panel

Main unit

Ceiling surface

Fig. 9-18

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. 9-19

Fig. 9-20

 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. 9-19)

 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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9-9. 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, the 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.

9-10. 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 that prevents

the air-intake grille from dropping off to the ceiling panel unit as shown in the figure at right.

(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. 9-21

Fig. 9-22

Hole for ceiling panel hook

Hook that prevents the

rille from droppin

Fig. 9-23

Fig. 9-24

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9-11. 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.

9-12. 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.

9-13. 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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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,

especially steel filings, bits of wire, and clips.

(2) The control wiring is correctly connected and all

electrical connections are tight.

(3) The transportation pads for the indoor fan have

been removed. If not, remove them now.

(4) The power has been connected 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)

(5) Both the gas and liquid tube service valves are

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

(6) 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.

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

ty certificate to the customer.

(8) 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 EEP ROM 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)

Liquid tube service cap

Gas tube service cap

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YES

Make necessary corrections.

Check the alarm

contents.

Check the alarm contents.

Turn OFF the indoor and

YES

*3 *3

CASE 1

CASE 2

CASE 3B CASE 3A

YES

Recheck the items to check before the test run.

Have the outdoor sub units been connected?

Are the inter-unit control wires

connected to more than 1 refrigerant

system?

Is it possible to turn ON the power only

for the 1 refrigerant system where the

test run will be performed?

Will automatic address setting be

performed in Heating mode?

Is it OK to start the compressors?

Turn ON the indoor and

outdoor unit power.

Short-circuit the mode change pin

(CN50) on the outdoor main unit PCB.

At the same time, short-circuit the

automatic address pin (CN51) for 1

second or longer, then pull it out.

Short-circuit the automatic address

pin (CN51) on the outdoor unit PCB

for 1 second or longer,

then release it.

Short-circuit the automatic address pin (CN51)

on the outdoor unit PCB for 1 second or longer,

then release it.

Start indoor and outdoor unit

cooling operation.

LED 1 and 2 blink alternately.

Start indoor and outdoor unit

heating operation.

LED 1 and 2 blink alternately.

LED 1 and 2 blink alternately

(about 2 or 3 minutes).

Is it OK to start the compressors?

Turn ON the indoor and

outdoor unit power.

Turn OFF the indoor

and outdoor unit

Turn ON the indoor and

outdoor unit power for that

refrigerant system only.

Are LEDs 1 and 2 on the

outdoor unit PCB OFF?

Are LEDs 1 and 2 on the outdoor unit PCB OFF?

Set the unit address.

Set the No. of outdoor units.

Set the No. of indoor units.

Set the system address.

When multiple outdoor units exist, disconnect the terminals

extended from the shorted plugs (CN33) at all outdoor main unit

PCBs except for 1.

Alternatively, move the sockets to the OPEN side.

Unit No. setting switch

(S004)

Unit No. setting switch

(S002 and S003)

Refer to Fig. 10-4

(Check the link wiring.)

The unit with the unit

No. set to 1 is the main unit. All other units are sub units.

Refer to “Table of Self-Diagnostic Functions and Description of Alarm Displays.”

*2 A minimum of 5 hours must have passed after the

power was turned ON to the outdoor unit.

*3 All indoor units operate in all refrigerant systems

where the power is ON.

Check that test run preparation is OK.

(Do not allow the short-circuited pins to remain short-circuited.)

Refer to the remote

controller test-run

settings.

Set the wired remote controller for test run.

Does system operate?

Return remote control to normal mode

Check and make corrections according to

“Table of Self-Diagnostic Functions.”

End test run.

Make necessary

corrections

10-2. Test Run Procedure

Items to Check Before the Test Run

1. Turn the remote power switch on at least 5 hours before the test, in order to energize the crank case heater.

2. Turn the outdoor service valves (2 locations) to the full-open positions.

 Use caution when making the set-

tings. If there are duplicated system addresses, or if the settings for the Nos. of the indoor units are not consistent, an alarm will occur and the system will not start.

 These settings are not made on the

indoor unit PCB.

Fig. 10-3

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10-3. Outdoor Unit PCB Setting

CN51

CN50

D043

(LED2)

D042

(LED1)

S003

CN33

S002

S004

Fig. 10-4

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