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

...

Download

Page 1

AS 1S

AS B S

AS 2S

AS S

A W S

AC S

ADS

ADP S

AF S

AF NS

AE S

R E M

2005

Indoor Unit T ype 22 28

56 64

106

1 40

AS 1S **

1-W ay Air D ischa rge

A S 1S 22 MH AS 1S 28MH A S 1S 36 MH

S emi-C oncea led

AS B S **

1-W ay Air D ischa rge

A S BS 28MH AS B S 36 MH AS B S 56 MH AS B S 73 MH

S emi-C oncealed S lim

AS 2S **

2-W ay Air D ischa rge

AS 2S 22 MH AS 2S 28 MH AS 2S 36 MH A S2 S5 6MH AS 2S 73 MH

S emi-C oncea led

AS S

4-W ay Air D ischa rge

AS S 22M H* A S S2 8MH* AS S 36MH * AS S 56M H*

AS S 73M H* AS S 10 6MH* AS S 140M H*

S emi-C oncea led*

AW S W a ll-Mounted A WS 22MH

WS 2 8MH

A W S 36MH

WS 5 6MH

AW S7 3MH

AC S

C eiling-Mounted AC S 36MH ** AC S 56MH ** AC S 73MH AC S 106M H A CS 1 40MH

AD S

C oncea led-Duct

AD S2 2MH* AD S2 8MH* ADS 36 MH*

AD S5 6MH* ADS 73M H ADS 1 06MH A DS 140M H

AD PS **

C oncea led-Duct

AD PS 73 MH ADP S 106 MH ADP S 140 MH

High S ta tic Pre ss ure*

AF S **

F loor-S ta nding AFS 2 2MH

AF S 28MH

AF S 36MH

AF S 56MH AF S 73MH

AF NS ** C oncea led-F lo or-

AF NS 22M H AF NS 28MH

F NS 36MH

AF NS 56M H AF NS 73M H

AE S

AD 45MHG *

AD 64MHG *

AS S 45M H*G

F C

S D

F C2 2MHG *

F C2 8MHG * F C 36MHG * F C45 MHG *

F C5 6MHG *

F C6 4MHG *

S D22 MHG * S D28 MHG *

S D36 MHG *

S D45 MHG * S D56 MHG *

S D64 MHG *

ADP S

AF S

INSTALLATION INSTRUCTIONS

- MULTISET System Air Conditioner -

DC Inverter 2-Way R410A



Indoor Units

R410A Models

2-W ay Air D ischa rge

S emi-C oncea led

4-W ay Air D ischa rge

S emi-C oncea led*

W a ll-Mounted

C oncea led-Duct

High S ta tic Pre ss ure*

F loor-S ta nding

C oncea led-F loor-

Wa ll-mounted

C eiling-mounted

C oncea led-Duc t

S lim Duc te d

2-W ay A ir Dis charge

S emi-C onceale d

4-W ay A ir Dis charge

S emi-C onceale d

C oncea led-Duc t

High-S tatic Pr ess ure

F loor-standing

C oncea led-F loor S tanding

F loor-C eiling

1-W ay A ir Dis charge

S emi-C onceale d

S emi-C oncealed Slim

* For these Indoor Unit Types, please see the installation instructions inside the manual included in their package

**Indoor Unit Types not available

R emote Controller R E M HW

Wireles s R emote C ontroller ( For AS S type) R EM H LAS S

Wireles s R emote C ontroller ( For AS 2S , AS BS type) R E M HLF C AS S

Wireles s R emote C ontroller ( For AC S type) R E M HLACS

Wireless R emote C ontroller

R E MHL

Wireles s R emote C ontroller ( For A R E M HLAW S

S implifie d R emote C ontroller R E M HWS M

R emote S ensor R S M

S ystem C ontroller R E M HW64S

S chedule Timer R E M H WT

Wireless R emote Controller + wal l receiver

Wired R emote C ontroller

Wireles s R emote C ontroller ( for AS S type)

S implifie d R emote C ontroller

R emote S ensor

S ystem Controller

Weekly T imer

Optional controllers

AS S /AC S /ADS /FC /S D

wa ll receive r for

R E M

Wireles s R emote C ontroller ( for F C & AS S types )

Wireles s R emote C ontroller ( for AC S type)

Wireles s R emote Controller (for AWS type)

C onstant S peed (S ub) U nit

AE S 06MI2H, AE S 0

MI2H, AE S1 0MI2H , A ES 12 MI2H

AE S 0 8M2H , A E S10M2 H, AE S12M2 H

Outdoor Units

Dc Inverter Main Unit

R efrigera nt R 410A is used in the outdoor units

Indoor Unit T ype

Page 2

IMPORTANT! Please Read Before Starting

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

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

●

Carefully read this instruction booklet before beginning.

●

Follow each installation or repair step exactly as shown.

●

Observe all local, state, and national electrical codes.

●

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.

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

When Servicing

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

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

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

• Ventilate any enclosed areas when installing or testing the

refrigeration system. Escaped refrigerant gas, on contact with fire or heat, can produce dangerously toxic gas.

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

NOTE

WARNING

CAUTION

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 2

Page 3

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/m

)

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

(ISO 5149).

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

For the amount of charge in this example:

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

NOTE

Outdoor unit

Refrigerant tubing

Indoor unit

e.g., charged amount (10 kg)

Outdoor unit

Indoor unit

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

e.g., charged amount (15 kg)

Refrigerant tubing

Outdoor unit

Very small room

Indoor unit

Small room

Medium room

Large room

Mechanical ventilation device – Gas leak detector

10 20 30

Total amount of refrigerant

Min. indoor floor space

Range below the density limit of 0.3 kg/m

(countermeasures not needed)

Range above the density limit of 0.3 kg/m

(countermeasures needed)

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 3

Page 4

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

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

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

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

defects of the unit.

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

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

3. Different tools required

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

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

Unit: mm

Material 0

Copper tube

Outer diameter 6.35 9.52 12.7 15.88 Wall thickness 0.8 0.8 0.8 1.0

Material 1/2 H, H

Copper tube

Outer diameter 19.05 22.22 25.4 28.58 31.75 38.1 Wall thickness 1.0 1.0 1.0 1.0 1.1 1.35

Item New R407C tools Remarks

tool compatible

with R410A

Manifold gauge Yes No Types of refrigerant, refrigerating machine

oil, and pressure gauge are different. Charge hose Yes No To resist higher pressure, material must be changed. Vacuum pump Yes Yes Use a conventional vacuum pump if it is equipped

with a check valve. If it has no check valve,

purchase and attach a vacuum pump adapter. Leak detector Yes No Leak detectors for CFC and HCFC that

react to chlorine do not function because

R410A contains no chlorine. Leak 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.

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.” For tubes of φ19.05 or larger, use C1220 T-1/2H material or H material, and do not bend the tubes.

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

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

joints (optional).

● When bending tubing

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

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

Manifold gauge

Vacuum pump

Outlet Inlet

CAUTION

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 4

Page 5

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.

New refrigerant R410A cannot be used for earlier models.

1. Compressor specifications are different.

If recharging a R22 or R407C compressor with R410A, durability will significantly decrease since some of the materials used for compressor parts are different.

2. Existing tubing cannot be used (especially R22).

Completely cleaning out residual refrigerating machine oil is impossible, even by flushing.

3. Refrigerating machine oil differs (R22).

Since R22 refrigerating machine oil is mineral oil, it does not dissolve in R410A. Therefore, refrigerating machine oil discharged from the compressor can cause compressor damage.

R22 refrigerating machine oil Mineral oil (Suniso oil) R407C refrigerating machine oil Synthetic fluid (ether oil) R410A refrigerating machine oil Synthetic fluid (ether oil)

R410A

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 5

Page 6

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

Please Read Before Starting Check of Density Limit Precautions for Installation Using New Refrigerant New refrigerant R410A cannot be used for earlier models

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. Combination Outdoor Units 1-9. System Limitations 1-10. Tubing Length 1-11. Check of Limit Density 1-12. Installing Distribution Joint 1-13 Optional Distribution Joint Kits 1-14. Optional Ball Valve Kits 1-15. Recommended Location of Ball Valves 1-16. Example of Tubing Size Selection and

Refrigerant Charge Amount

2. SELECTING THE INSTALLATION SITE . . . . .26

2-1. Indoor Unit 2-2. Outdoor Unit 2-3. Shield for Horizontal Exhaust Discharge 2-4. Installing the Outdoor Unit in Heavy Snow Areas 2-5. Precautions When Installing in Heavy Snow

Areas 2-6. Dimensions of Wind Ducting 2-7. Dimensions of Snow Ducting

3. HOW TO INSTALL THE INDOOR UNIT . . . . .33

■ 1-Way Air Discharge Semi-Concealed Type

(AS1S Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .33

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) . . . . . . . . . . . . . . . . . . . . . . . . . . .38

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) . . . . . . . . . . . . . . . . . . . . . . . . . . .43

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) . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

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) . . . . . . . . . . . .51

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) . . . . . . . . . .55

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) . . . . . . . . . .62

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) . . . . . . . . . . . . . . . . . . . . . . . . . .67

3-35. Required Minimum Space for Installation

and Service (73, 106, 140 Type)

3-36. Required Minimum Space for Installation

and Service (224, 280 Type) 3-37. Suspending the Indoor Unit 3-38. Installing the Refrigerant Tubing 3-39. Installing the Drain Piping 3-40. Caution for Ducting Work 3-41. Increasing the Fan Speed (280 Type only)

■ Floor-Standing Type (AFS Type) Concealed Floor-Standing Type (AFNS Type) .74 3-42. Required Minimum Space for Installation

and Service 3-43. Dimensions and Part Names 3-44. Removing and Attaching the Front Panel

(Floor-Standing Type) 3-45. Installing the Refrigerant Tubing 3-46. Installing the Drain Piping 3-47. Installing the Remote Controller

CONTENTS

Page

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 6

Page 7

4. HOW TO INSTALL THE OUTDOOR UNIT . . .79

4-1. Transporting 4-2. Installing the Outdoor Unit

5. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . .81

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

eter for Power Supply System

5-3. Wiring System Diagrams

6. HOW TO INSTALL THE REMOTE CONTROLLER

(OPTIONAL PART) . . . . . . . . . . . . . . . . . . . . . .85

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 6-7. Meanings of Alarm Messages

7. HOW TO PROCESS TUBING . . . . . . . . . . . . .93

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 . . . . . . . . . . . . . . . . . . . . . . . . .97

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

9. HOW TO INSTALL THE CEILING PANEL . . .100

■ 1-Way Air Discharge Semi-Concealed Type

(AS1S Type) . . . . . . . . . . . . . . . . . . . . . . . . . .100

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

■ 1-Way Air Discharge Semi-Concealed Slim Type

(ASBS Type) . . . . . . . . . . . . . . . . . . . . . . . . . .101

9-3. Installing the Ceiling Panel

■ 2-Way Air Discharge Semi-Concealed Type

(AS2S Type) . . . . . . . . . . . . . . . . . . . . . . . . . .103

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) . . . . . . . . . . . . . . . . . . . . . . . . . . .105

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 . . . . . . . . . . . . . . . . . . . . . . . . . . .109

10-1. Preparing for Test Run 10-2. Test Run Procedure 10-3. Main Outdoor Unit PCB Setting 10-4. Sub Outdoor Unit PCB Setting 10-5. Auto Address Setting 10-6. Caution for Pump Down

11. HOW TO INSTALL THE WIRELESS REMOTE

CONTROLLER RECEIVER . . . . . . . . . . . . . .122

■ REM HLASS for 4-Way Cassette (ASS Type) . .122

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) .125

11-6. Installing the Receiver Unit 11-7. Accessories Supplied with Unit 11-8. Wiring the Receiver Unit 11-9. Precautions on Simultaneous Installation of

Wired Remote Controller and Wireless Remote Controller

11-10. How to Use the Test Run Setting

■ REM HLAS2BS for 2-Way and High Ceiling

1-Way Type (AS2S, ASBS Type) . . . . . . . . . .128

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133

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 . . . . . . . . . . . . . . . . . . .139

■ DC Fan Tap Change Procedure for 4-Way Cassete (ASS Type)

Page

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 7

Page 8

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 8

Page 9

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 wide and narrow tubes

For wide and narrow 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 wide and narrow tubes

For wide and narrow tube flare nuts

For flare insulator

For securing drain hose

For drain joint

For sealing recessed portion of po

wer supply

Drain hose

(Black)

For securing drain hose

Connection cable for fan motor

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 9

Page 10

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 wide and narrow tubes

For wide and narrow 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 wide and narrow tubes

For securing drain hose

For drain joint

For dr

ain joint

(White)

Washer

For suspension bolts

Screw

Printed on container box

For wide and narrow tube flare nuts

For full-scale installation diagram

For securing drain hose

Table 1-5 (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 × 16 mm

Insulator

For insulating flare nut (73 type only)

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 10

Page 11

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 wide and narrow tube joints

For wide and narrow flare joints

For flare and drain insulator

For pow

er supply inlet

T10

White (heat-resisting)

For drain hose connection

Hose band

L140

For main unit + PVC pipe joints

Printed on container box

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 wide and narrow tubes

For wide and narrow tubes flare nuts

For drain hose joint

For securing drain hose

For drain joint

For sealing recessed portion 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.

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 11

Page 12

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

Part Name Figure

Q’ty

Remarks

Special washer

Flare insulator

Drain socket 1

Tube connector

For suspending indoor unit from ceiling

For wide and narrow tubes

For drain pipe connection

For increasing size of narrow tube from φ6.35 to φ9.52 mm (only f

or 73 type)

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

Part Name Figure

Q’ty

Remarks

Connection pipe

Flare insulator

Insulating tape

Vinyl clamp

Insulating tape (black and long)

Drain insulator

For connecting wide tubes

For wide and narrow tubes

For wide and narrow tube flare nuts

For wide and narrow tubes

For ends of flare insulator

For drain pipe

For drain hose joint

(White)

(Black)

Table 1-10 (Outdoor Unit)

Figure

Q’ty

Connection tube (for wide tubing)

Connection tube (for narrow tubing)

Part Name

06 Model

(6 hp)

08 Model

(8 hp)

10 Model

(10 hp)

12 Model

(12 hp)

08 Model

(8 hp)

10 Model

(10 hp)

12 Model

(12 hp)

1111

Instruction manual

Explanatory booklet

paper

seal

Sub unit (constant speed) unit)

Main unit (DC inverter unit)

Seal label

hp = horsepower

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 12

Page 13

ø19.05

ø38.1

ø19.05

ø31.75

ø15.88

ø28.58

ø12.7

ø25.4

ø9.52

ø19.05

ø9.52

ø15.88

ø9.52

ø12.7

(mm)

–

70.0

(25 hp)

42.0

(15 hp)

ø12.7

ø28.58

52.4

(19 hp)

42.0

(15 hp)

7.1

(2.5 hp)

7.1

(2.5 hp)

98.0

(35 hp)

–

98.0

(35 hp)

16.0

(6 hp)

16.0

(6 hp)

70.0

(25 hp)

22.5

(8.1 hp)

ø9.52

ø22.22

22.5

(8.1 hp)

30.0

(11 hp)

30.0

(11 hp)

Below kW

Over kW

42.0

(15 hp)

Total capacity after distribution

Tubing size

Wide tubing

Narrow tubing

hp = horsepower

Unit: mm

1-5. Tubing Size Table 1-11a Main Tubing Size (LA)

Unit: mm

––––––––––––

–

85.0

–

78.5

–

73.0

–

ø9.52

ø22.22

28.0

–

33.5

ø25.4

ø12.7

40.0

45.0

ø28.58

ø15.88

50.4

56.0

–

ø19.05

ø31.75

61.5

68.0

–

22.4

ø19.05

ø9.52

– –

ø9.52

ø19.05

16.0 90.0

12 12

121010

101.0 106.5 113.0 118.0

40 42

ø38.1

441046

ø19.05

135.0

–

130.0123.5

810

– ––

96.0

(6) (8)

(10) (12) (12)(10)(10)(10) (12)(10)

(6)

(12) (12)

(12) (12)(10) (10) (12) (12) (12)

(8)

(10)

Total system horsepower

Combined outdoor units

Wide tubing (mm)

Narrow tubing (mm)

Table 1-12 Outdoor Unit Tubing Connection Size (A– D) Unit: mm

22.5

ø9.52

22.4

16.0

ø22.22

ø9.52

22.4 28.0 33.5

28.1

28.0 33.5

33.6

ø19.05

ø12.7

ø25.4

ø19.05

ø22.22 ø25.4

ø9.52 ø12.7

Brazing connection

ø9.52

Flare connectionFlare connection

Wide tubing

Balance tubing

Main unit (DC inverter unit)

Sub unit (constant speed unit)

Narrow tubing

Note 1: “(6), (8), (10), (12)” in the combination table indicate the horsepower of the main units (DC inverter type). “8, 10, 12”

indicate the horsepower of sub units (constant speed type).

2: If future extension of the system is expected, select tubing diameters that are based on total horsepower after extension.

However, extension that requires increasing the tubing size by 2 steps is not possible.

3: The balance tubing (outdoor unit tubing) size is

φ9.52.

■ Size of tubing (LO1, LO2) between outdoor units

Select the size of tubing between outdoor units based on the main tubing size (LA) as given in the table above.

Table 1-11b Main Tubing Size After Distribution (LB, LC...)

Note: 1. 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. (Especially the main tubing segments of LA, LB and LF.)

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 13

Page 14

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

Table 1-15 Required Copper Tubing Dimensions

Unit: mm

1-7. Additional Refrigerant Charge

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

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

Wide tubing size (mm) 12.7 15.88 19.05 22.22 25.4 28.58 31.8 38.1

90° elbow 0.30 0.35 0.42

0.48

0.52 0.57 0.70

0.79

45° elbow 0.23 0.26 0.32

0.36

0.39 0.43 0.53

0.59

U-shape tube bent (R60 100 mm) 0.90

1.05

1.26 1.44 1.56 1.71 2.10

2.37

Trap bend

2.30

2.80 3.20 3.80 4.30

4.70

5.00

5.80

Y-branch distribution joint Equivalent length conversion not needed.

Ball valve for service Equivalent length conv

ersion not needed.

Material 0

Copper tubing

Outer diameter 6.35 9.52 12.7 15.88

19.05 22.22

Wall thickness 0.8 0.8 0.8 1.0

1.0

Material

1/2 H, H

Copper tubing

Outer diameter 25.4 28.58 31.75 38.1 Wall thickness 1.0 1.0 1.1

1.35

Narrow tubing size Amount of refrigerant

charge/m (g/m)

6.35 26

9.52 56

12.7 128

15.88 185

19.05 259

22.22 366

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

*Always charge accurately using a scale for weighing.

Table 1-13 Indoor Unit Tubing Connection (1, 2...40) Unit: mm

ø22.22

(mm)

ø15.88

ø9.52ø6.35

ø12.7

ø19.05

Wide tubing Narrow tubing

Indoor unit type

28 36 56

106 140

224

280

Note: Use C1220T-1/2H material for tubing over φ19.05.

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 14

Page 15

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

AES06MI2H AES08MI2H AES10MI2H AES12MI2H

(kg)

7.5 10.0 10.0 10.0

– AES08M2H AES10M2H AES12M2H

(kg)

– 10.0 10.0 10.0

1-8. Combination of Outdoor Units

As shown in Table 1-18, a DC unit can be used independently or in combination with an AD unit.

1-9. System Limitations

Table 1-19 System Limitations

CAUTION

●

Sub units cannot be used independently.

Table 1-18 Combination of Outdoor Units

Total cooling capacity 16.0 22.4 28.0 33.5 40.0 45.0 50.4 56.0 61.5 68.0 73.0 78.5 85.0 90.0 (kW)

DC INV. unit (main) 06 08 10 12 06 08 10 10 12 12 10 10 10 12

AD unit (sub)

08 08 08 10 10 12 08 10 10 10

08 08 10 10

Total cooling capacity 96.0 101.0 106.5 113.0 118.0 123.5 130.0 135.0 (kW)

DC INV. unit (main) 12 12 10 10 12 12 12 12

12 12 10 10 10 12 12 12

AD unit (sub)

10 12 10 10 10 10 12 12

08 10 10 10 10 12

Max. No. allowable connected outdoor units 4 Max. capacity allowable connected outdoor units 135 kW (48 hp) Max. connectable indoor units 40 Max. allowable indoor/outdoor capacity ratio 50 – 130 %

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 15

Page 16

1-10. Tubing Length

Table 1-20 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights

LO1

Max. 40cm

LD LELC

R410A distribution joint

DDVE135 (for outdoor unit) DDVE68 (for outdoor unit) DDVI135 (for indoor unit) DDVI68 (for indoor unit) DDVI16 (for indoor unit)

LO2

(ø9.52)

Sub unit

Main unit

Balance tubing

Explanation of symbols

Distribution joint (DDVE & DDVI: purchased separately) special tubing for R410A

Ball valve (BV: purchased separately) special valve for R410A

For extension

Main tubing length LM = LA + LB … ≤ 80 m Main distribution tubes LC – LH are selected according to the capacity after the distribution joint. Sizes of indoor unit connection tubing 1 – 40 are determined by the connection tubing sizes on the indoor units.

Note:

Do not use commercially available T-joints for the liquid tubing and parts.

* Be sure to use special R410A distribution joints (DDV: purchased separately) for outdoor

unit connections and tubing branches.

NOTE

1: The tubing size (LO1, LO2) connecting the outdoor units to one another is decided by the total capacity of the

outdoor units connected at tubing ends. The LO1 tubing size is determined by the total capacity of the 3 sub units B, C, and D, which are connected after main unit A. The LO2 tubing size is determined by the total capacity of sub units C and D, which are connected after sub unit B. Refer to Table 1-11a.

2: If the maximum tubing length (L1) exceeds 90 m (or equivalent length), increase the size of both the narrow

and wide main tubing (LM) by 1 step. However, the maximum wide tubing size is

38.1. In addition, it is not necessary to increase the tubing sizes in the case of a 6-horsepower system. (Tubing reducers must be obtained in the field.)

Items Marks Contents Length (m)

L1 Max. tubing length

Actual length 150 Equivalent length 175

∆L (L2 – L4)

Difference between max. length and min.

length from the No.1 distribution joint

LM Max. length of main tubing (at max. diameter)

1, 2~ 40

Max. length of each distribution tube 30

L1+

+2+~

Total max. tubing length including length of

300

A+B

+LF+LG+LH each distribution tube (only narrow tubing)

L5 Distance between PC and AD unit

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 15 H3 Max. difference between outdoor units

L = Len

th, H = Height

Allowable tubing length

Allowable elevation difference

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 16

Page 17

WARNING

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

1-11. 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.)

1-12. Installing Distribution Joint

(1) Refer to “HOW TO ATTACH DISTRIBUTION

JOINT” enclosed with the optional distribution joint kit (DDVE135, DDVE68, DDVI135, DDVI68, 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.

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 17

Page 18

1-13. Optional Distribution Joint Kits

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

Table 1-21

1. DDVE68

Use: For outdoor unit (Capacity after distribution joint is 68.0 kW or less.)

Table 1-22 Dimensions for connections of each part

Unit: mm

2. DDVE135

Use: For outdoor unit (Capacity after distribution joint is greater than 68.0 kW and no more than 135.0 kW.)

Table 1-23 Dimensions for connections of each part

Unit: mm

395

230

126

340

130

Narrow tubeWide tube

EFGGFE

Thermal insulation Thermal insulation

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

Position A B C D E F G H I J Dimension ––

28.58

25.4

22.22

19.05

15.88

12.7

9.52 –

Position A B C D E F G H I J Dimension

38.1φ31.75φ28.58

25.4

22.22

19.05

15.88

12.7

9.52 –

622

315

340

130

D E F

195

BCD

G F

GFE EFG

Narrow tube

Wide tube

Insulator

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

Model name Cooling capacity after distribution Remarks

1. DDVE68 68.0 kW or less For outdoor unit

2. DDVE135 135.0 kW or less For outdoor unit

3. DDVI16 22.4 kW or less For indoor unit

4. DDVI68 68.0 kW or less For indoor unit

5. DDVI135 135.0 kW or less For indoor unit

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 18

Page 19

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

4. DDVI68

Use: For indoor unit (Capacity after distribution joint is greater than 22.4 kW and no more than 68.0 kW.)

Table 1-24 Dimensions for connections of each part

Unit: mm

5. DDVI135

Use: For indoor unit (Capacity after distribution joint is greater than 68.0 kW and no more than 135.0 kW.)

Table 1-25 Dimensions for connections of each part

Unit: mm

210

145

135

185 50

103

Insulator

Wide tube Narrow tube

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

FED

300 112

210

230

DEF

141

145

JIH

D E F

G H

103

Narrow tube

Wide tube

Insulator

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

Position A B C D E F G H I J Dimension ––

28.58

25.4

22.22φ19.05

15.88

12.7

9.52

6.35

Position A B C D E F G H I J Dimension

38.1φ31.75φ28.58

25.4

22.22φ19.05

15.88

12.7

9.52

6.35

E D C

A B

H G

F E

BAC

CDEF

FEDC

CAB

GFE

JIH

EFG

HIJ

H G

105 112

340

130

Wide tube

Narrow tube

Insulator

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 19

Page 20

1-14. Optional Ball Valve Kits

Table 1-26

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 3.8 MPa or more.

* It is recommended that this part be installed at each outdoor unit (wide tube and narrow tube), in order to pre-

vent refrigerant from being released into the atmosphere if the outdoor unit is eventually replaced.

Dimensions

Unit: mm

NOTE

Valve connecting tube size (mm) Indoor unit where used

Model No.

Wide tube Narrow tube Balance valve

Outdoor unit where used Total capacity of indoor units

after the valve

BV-RXP335AG 25.4 12.7 – 12 hp More than 30.0 kW and less than 42.0 kW BV-RXP280AG 22.22 9.52 – 10 hp Less than 30.0 kW BV-RXP224AG 19.05 9.52 – 6, 8 hp 22.4 kW or less BV-RXP160AG 15.88 9.52 –– 16.0 kW or less BV-RXP56AG 12.7 6.35 –– 5.6 kW or less BV-RP3G ––9.52 For balance tube –

Service port

30˚

2 - ø 7

Insulator

(divided in 2)

Insulator

(divided in 2)

Service port

30˚

2 - ø 7

Insulator

(divided in 2)

Service port

2 - ø 7

30˚

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

BCD

ø19.05 (3/4") ø22.22 (7/8")

ø25.4 (1")

250 55 69

84.5

72 76 89

108

42 42 42 51

54 54 58 68

16 16 20 22

44 44 51 56

250 250515168682222

56 56

Type with flare nut at each end

Type that is welded at each end

Dimensions

Size

Figure

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

hp: horse power

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 20

Page 21

Ball Valve Installation (for refrigerant R410A only)

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

Model name Size

BV-RXP56AG

6.35 • φ12.7

BV-RXP160AG

9.52 • φ15.88

BV-RXP224AG

9.52 • φ19.05

BV-RXP280AG

9.52 • φ22.22

BV-RXP335AG

12.7 • φ25.4

Valves with φ19.05, φ22.22, or φ25.4 connections are brazing type. All others are flare-nut type.

1. Installing the ball valve (1) If the ball valve is to be installed on the outdoor

unit side, or for outdoor unit extension, install it so that the service port faces the outdoor unit side.

(2) 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

7.94. The face-to-face dis-

tance between the φ12.7 or

15.88 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, welding plug The flare nut on the service port side is fully tight-

ened. In the case of the welded type, a plug is welded in place.

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. In the case of the brazed type, heat with a brazing torch and remove the plug. At this time, use a damp shopcloth or other means to cool the brazed-type ball valve unit while using the torch.

When performing brazing, be sure to replace the air in the tubing with nitrogen in order to prevent the formation of oxide film.

Outdoor unit

Service port

Outdoor unit extension

Ball valve

Indoor

Indoor unit

Service port

Ball valve

Outdoor

Indoor unit extension

Service port

Fully tightened (this side only)

Plug (this side only)

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 21

Page 22

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 22

Page 23

1-15. Recommended Location of Ball Valves

● It is recommended that a ball valve kit be installed for each outdoor unit.

● 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

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.

(2) When adding ball valve for outdoor unit

1. Location: Install the ball valve at the main tube of the distribution joint.

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.

• If the ball valve is installed at the outdoor unit (including extension for outdoor unit), face the service port of the valve toward the outdoor unit side (see above illustration; dotted line) and allow a distance of over 50 cm from the outdoor unit. If the ball valve is installed between the indoor unit (including extension for indoor unit) and the main tube, face the ball valve toward the indoor unit side (see above illustration; dotted line).

NOTE

Outdoor unit

Distribution tube

Distribution joint

Main tube

Ball valve (for extension)

Less than 40 cm

Indoor unit for extension

Main tube

Ball valve (for extension)

Main tube of distribution joint

To indoor unit

Outdoor unit for extension

Narrow tube

Balance tube

Wide tube

Ball valve (for service)

Distribution tube

Main tube

Ball valve (for extension)

Indoor unit for extension

Required additional refrigerant charge (kg)

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 23

Page 24

1-16. Example of Tubing Size Selection and Refrigerant Charge Amount

Additional refrigerant charging

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

= [366

× (a) + 259 × (b) + 185 × (c) + 128 × (d) + 56 × (e) + 26 × (f)] × 10

–3

(a) : Narrow tubing Total length of φ22.22 (m) (d) : Narrow tubing Total length of φ12.7 (m) (b) : Narrow tubing Total length of

φ19.05 (m) (e) : Narrow tubing Total length of φ9.52 (m)

φ15.88 (m) (f) : Narrow tubing Total length of φ6.35 (m)

● Charging procedure

Be sure to charge with R410A refrigerant

in liquid form.

1. After performing a vacuum, charge with refrigerant from the narrow 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 wide 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.

1 2 3 4 5 6 7

Outdoor unit

08 model

10 model

106 model 106 model 140 model 140 model

140 model

140 model 73 model

Main unit

Example:

● Example of each tubing length

Main tubing Distribution joint tubing

LO = 2 m LD = 15 m Outdoor side Indoor side LA = 40 m LE = 10 m A = 1.5 m 1 = 30 m 5 = 2 m LB = 5 m LF = 10 m B = 1.5 m 2 = 5 m 6 = 6 m LC = 5 m C = 2 m 3 = 5 m 7 = 5 m

4 = 5 m

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 24

Page 25

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 15 m3× ceiling height 2.7 m = room volume 40.5 m

), the graph at right shows that the minimum room

volume should be 70.3 m

(floor area 26 m2) for refrigerant of 21.093 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)

21.093 (kg) = 0.52 (kg/m3) ≥ 0.3 (kg/m3)

40.5 (m

)

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

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

● Obtain narrow tubing size from Tables 1-11a, 11b, 12, 13 and 16.

Main tubing

LO = φ15.88 m (Total capacity of outdoor unit is 50.4 kW) LA = φ19.05 m (Total capacity of indoor unit is 88.4 kW) The longest tubing length in this example LB = φ19.05 m (Total capacity of indoor unit is 77.2 kW) (LM = 40 + 5 = 45 m) LC = φ15.88 m (Total capacity of indoor unit is 66.0 kW) LD = φ15.88 m (Total capacity of indoor unit is 52.0 kW) LE = φ12.7 m (Total capacity of indoor unit is 38.0 kW) LF = φ9.52 m (Total capacity of indoor unit is 22.0 kW)

Distribution joint tubing

Outdoor side A: φ9.52 B: φ9.52 C: φ9.52 (from outdoor unit connection tubing) Indoor side 1: φ9.52 2: φ9.52 3: φ9.52 4: φ9.52

5: φ9.52 6: φ9.52 7: φ9.52 (from indoor unit connection tubing)

● Obtain charge amount for each tubing size

Note that the charge amounts per 1 meter are different for each narrow tubing size.

φ19.05 → LA + LB : 45m × 0.259 kg/m = 11.655 φ15.88 → LO + LC + LD : 22 m × 0.185 kg/m = 4.07 φ12.7 → LE : 10 m × 0.128 kg/m = 1.28 φ9.52 → LF + A – C + 1 – 7 : 73 m × 0.056 kg/m = 4.088

Total 21.093 kg

Additional refrigerant charge amount is 21.093 kg.

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

CAUTION

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 25

Page 26

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 1-20.

● 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 T

ype

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 26

Page 27

Fig. 2-6

Fig. 2-7

Fig. 2-8

2-2. Outdoor Unit

AVOID:

● heat sources, exhaust fans, etc.

● damp, humid or uneven locations

● indoors (no-ventilation location)

DO:

● choose a place as cool as possible.

● choose a place that is well ventilated.

● allow enough room around the unit for air intake/

exhaust and possible maintenance.

Installation Space

Install the outdoor unit where there is enough space for ventilation. Otherwise the unit may not operate properly. Fig. 2-7 shows the minimum space requirement around the outdoor units when 3 sides are open and only 1 side is shuttered, with open space above the unit. The mounting base should be concrete or a similar material that allows for adequate drainage. Make provisions for anchor bolts, platform height, and other site-specific installation requirements.

CAUTION

● Leave space open above

the unit.

● Construct louvers or other

openings in the wall, if necessary, to ensure adequate ventilation.

NOTE

Do not do any wiring or tubing within 30 cm of the front panel, because it is needed as a servicing space for the compressor.

2 in 1 row

2 in 2 rows

2 in 3 rows

3 in 1 row 4 in 1 row

4 in 2 rows

4 in 3 rows

3 in 2 rows

3 in 3 rows

Min.

0.6 m

Min.

0.6 m

Min.

0.6 m

Min.

0.9 m

Min.

0.9 m

Min.

1.0 m

Min.

1.0 m

Min.

1.0 m Min.

1.0 m

Min.

1.3 m

Min.

1.3 m

Min.

1.3 m

Min.

1.3 m

Min.

1.3 m

Min.

1.3 m

Min.

1.3 m

Min.

1.3 m

Min.

0.9 m Min.

0.9 m

Min.

0.9 m

Min.

0.9 m

Min.

0.9 m

Min.

1.1 m

Min.

1.1 m

Min.

1.1 m

Min.

1.4 m

Min.

1.4 m

Min.

1.6 m

Min.

1.6 m

Min.

1.6 m

Min.

1.6 m

Min.

1.4 m

Min.

1.4 m

Min.

1.1 m

Min.

0.9 m

Min.

0.6 m

0.6 m0.6 m0.6 m

0.6 m 0.6 m

0.6 m

Outdoor unit

Heat source

Hot air

Exhaust fan

More than 60 cm

More than 50 cm

Example of installation of 2 units

Conditions for installation: Fence height 1.8 m; effective opening ratio 50%; no raising for installation. The distance between the units will vary with changes in installation conditions.

Multiple Installation Example

925925925

Installation anchor hole pitch

(3928)

830

925

909090

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 27

Page 28

Fig. 2-9

Fig. 2-10

Fig. 2-11

2-3. Shield for Horizontal Exhaust Discharge

It is necessary to install an air-discharge chamber (field supply) to direct exhaust from the fan horizontally if it is difficult to provide a minimum space of 2 m between the air-discharge outlet and a nearby obstacle. (Fig. 2-9)

CAUTION

In regions with heavy snowfall, the outdoor unit should be provided with a solid, raised platform and snowproof vents. (Fig. 2-10)

2-4. Installing the Outdoor Unit in Heavy Snow

Areas

In locations where wind-blown snow can be a problem, snow-proof vents should be fitted to the unit and direct exposure to the wind should be avoided as much as possible. (Fig. 2-11) The following problems may occur if proper countermeasures are not taken:

● The fan in the outdoor unit may stop running, caus-

ing the unit to be damaged.

● There may be no air flow.

● The tubing may freeze and burst.

● The condenser pressure may drop because of

strong wind, and the indoor unit may freeze.

2-5. Precautions When Installing in Heavy Snow

Areas

a) The platform should be higher than the maximum

snow depth. (Fig. 2-10)

b) 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 the outdoor unit.

c) The platform foundation must be solid and the unit

must be secured with anchor bolts.

d) When installing on a roof subject to strong wind,

countermeasures must be taken to prevent the unit from being overturned.

With snowproof vents

(Hi

h platform)

Without snowproof vents

(Low platform)

AVOID

Fallen sn

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 28

Page 29

2-6. Dimensions of Wind Ducting

Reference diagram for air-discharge chamber (field supply) - 1

Air direction: Front direction example

Note: Can be installed so that the air direction is to the front or rear direction.

Air direction: Front direction example

Note: Can be installed so that the air direction is to the front or rear direction.

08 / 10 / 12 unit

06 unit

Unit: mm

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 29

Page 30

Reference diagram for air-discharge chamber (field supply) - 2

08 / 10 / 12 unit

06 unit

Unit: mm

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 30

Page 31

2-7. Dimensions of Snow Ducting

Reference diagram for snow-proof vents (field supply) - 1

Note: Can be installed so that the air direction is to the front or rear direction.

Air direction: Front direction example

Note: Can be installed so that the air direction is to the front or rear direction.

Air direction: Front direction example

08 / 10 / 12 unit

06 unit

Unit: mm

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 31

Page 32

Reference diagram for snow-proof vents (field supply) - 2

Part name

Model No. Q'ty

Air intake duct

Spacer

Air direction chamber

STK-BDR280A STK-BDR280AF STK-BDR

STK-DR280A

Air intake duct (front)

1 2 3 4

4 6 4

3 (with 6 separate parts)

Unit: mm

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 32

Page 33

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 (wide tube)

Flared refrigerant connection outlet (narrow 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 suppl

)

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 33

Page 34

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 ceil-

ing 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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 34

Page 35

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 air-intake 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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 35

Page 36

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 36

Page 37

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 37

Page 38

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 (narrow tube side)

Refrigerant tubing joint (wide 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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 38

Page 39

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)

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. 3-23. 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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 39

Page 40

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°.)

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 40

Page 41

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

● 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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 41

Page 42

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.

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 42

Page 43

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 (wide tube)

Refrigerant connection outlet (narrow 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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 43

Page 44

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. Tubing must be laid and connected inside the ceil-

ing 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. 3-40. 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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 44

Page 45

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 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. 3-44)

● 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

● 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)

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 45

Page 46

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 46

Page 47

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 (narrow side)

Refrigerant tubing joint (wide side)

(VP25)

Drain outlet

(other side)

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

Cassette, see page 139.

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 47

Page 48

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 48

Page 49

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

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 49

Page 50

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.

04-396 Inverter-W_a-p50 ARGO 12/21/04 9:38 AM Page 50

Page 51

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

φ80

Left tubing

Right-rear tubing (recommended)

ht tubin

Left-rear tubing

Remove the rear panel

Press

Screws used during transportation

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 51

Page 52

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 52

Page 53

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 53

Page 54

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 con-

nections to be made.

Next, bend the tubing with a pipe bender, and con-

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

tubing and drain hose together with insulating

tape, as shown in the figure at right.

Then fit the tubing into the tubing storage space in

the rear of the indoor unit and clamp in place. (3) Adjust the indoor unit so that it is securely installed

onto the rear panel.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 54

Page 55

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

Wide tubing

Narrow tubing

Right side

Left side

Rear (Figure shows view from front)

Closed with rubber stopper at time of shipment.

Left drain position Right drain position

(Narrow tubing • Wide tubing)

123

110 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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 55

Page 56

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

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

Unit: mm

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 56

Page 57

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 attach-

ment 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 ceil-

ing 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.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 57

Page 58

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 58

Page 59

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 59

Page 60

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 on page 58, 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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 60

Page 61

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 on page 58. 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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 61

Page 62

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

(Suspension bolt pitch)

M-ø3.3

(Hole)

4-ø12 (Hole)

(Hole)

A (O.D.)

L-ø6

10 10

5555 200

IJJK

C D(150)

EEEF75

285

70 130

25 210

310

175

3131

H (Duct suspension bolt pitch) G (Ceiling opening dimension)

100

185

58025

115

190

70 30

160

630 25

275

(Ceiling opening dimension)

260

(O.D.)

1919

Inspection access

(450 × 450)

(Field supply)

Inspection access panel

Ceiling

Unit: mm

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 62

Page 63

ADS

Fig. 3-100

3-31. Suspending the Indoor Unit

Depending on the ceiling type:

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

• 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.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 63

Page 64

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 64

Page 65

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.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 65

Page 66

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 (m3/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 m3/minute, while the external static pressure is 49 Pa at “H” position. If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed as explained above.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 66

Page 67

ADPS

■ 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. 3-113a.

● It is recommended that space be provided (600 ×

600 mm) for checking and servicing the electrical system.

● Fig. 3-113b and Table 3-7 show the detailed dimen-

sions of the indoor unit.

Fig. 3-113b

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)

(mm)

Drain pan

Ceiling face

310

100 100

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 narrow line (ø9.52 or ø6.35) Refrigerant wide 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. 3-113a

Unit: mm

140

73, 106

420

450

395

425

Length

Type

Unit: mm

Table 3-7

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 67

Page 68

ADPS

3-36. Required Minimum Space for Installation

and Service (224, 280 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. 3-114a.

● It is recommended that space be provided (600 ×

600 mm) for checking and servicing the electrical system.

● Fig. 3-114b shows the detailed dimensions of the

indoor unit.

Fig. 3-114b

Fig. 3-114a

Min. 600

(Space for

service)

Min. 700

(Space for

service)

Min. 610

Min. 130

Drain port

Drain pan

Ceiling face

Refrigerant

tubing

Electrical component box

1170

(mm)

1100

(Suspension bolt pitch)

Air suction side

5555

1200

1310

(Suspension bolt pitch)

Inspection

access

(600

600)

479

300

100

1428

1310

1100 51

1170 (Suspension bolt pitch)

964

9×100P=900

4 - 37×12 (Hole for suspension bolt)

26-ø3.5 (Holes all around)

28-ø3.5 (Holes all around)

10×100P=1000

106

1070

1310

1200 (Suspension bolt pitch)

113

(236)

364364

1334

43320

100

178

209344

1222

Refrigerant tubing joint (narrow tube ø12.7 mm) Refrigerant tubing joint (wide tube ø28.6 mm) Power supply outlet Drain port (O.D. 32 mm) Duct connection for suction Duct connection for discharge

Unit: mm

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 68

Page 69

ADPS

Fig. 3-115

Fig. 3-116

Fig. 3-117a

Hole-in-anchor Hole-in-plug

Concrete Insert

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

)

Ceiling tiles

Ceiling support

Suspension bolt

20~50 mm

Hexagonal nuts and washers

(2 sets)

Fig. 3-117b

Outdoor Unit Side

Supplied strainer assembly

Wide tube ø15.58

Suspension hook

CAUTION

Wide tube ø15.88

Supplied strainer assembly

Narrow tube ø9.52

Service cover

Valve body

6P connector (5 m)

Note: This figure shows the valve body with the suspension hook and strainer assemblies installed.

Indoor Unit Side

3040

167

3040

281

189

159.5

153

100

164

319

1045

354 372

80 80

3-37. 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. (Figs. 3-113a and 3-114a)

(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. 3-117a.

■ RAP (Refrigerant Accumulation Protector) Valve Kit (EEV22-28)

When installing a ADPS type indoor unit (either the 8hp 224 type or 10-hp 280 type), you must also install the RAP Valve Kit (EEV22-28).

● Connect two RAP valve kits in parallel for 224 or

280 type.

● Secure the R.A.P. valve kit using suspension bolts,

etc. within 30 meters from the indoor unit.

● Do not place the R.A.P. valve kit directly on the

ceiling.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 69

Page 70

ADPS

”

‘

’

ˆÓ

”

‚ê‚

Ω

Eƒ

ƒ†ƒ

ƒb ƒg

“à• ”

[

85464759795001

@ @

[

• ª ‚ É—â‹

‚

‚ È ‚

ª ‚ ç ì ‹ Æ

‚

‚ Ä ‚

‚ ‚≥ ‚

¢ B

@ @

‰

E }

‚Ì

‚æ ‚ ‚ É

”

Ç ‚



”

‚ê‚

Ω

‚ Å

[

‚ —

Ú ‚Ì ”

‚©

‚ ç ç

‚ é ‚

Ω

‚ß

‘

Ç ‚ Ì—

Ú ‚É ‚ Í

ƒ†ƒ

jƒbƒg “à•

”‚Ì

Thermistor (inside unit)

Wide tubing

Dampened shopcloths

3-38. Installing the Refrigerant Tubing

The size of the refrigerant tubing is as shown in the table below.

Table 3-8

● When brazing the wide tubing, cool the tubing with

dampened shopcloths as you work, as shown in the figure at right, to protect the unit’s thermistor from the heat generated by brazing.

● Be sure to insulate both the wide tubing and nar-

row tubing. In addition, wrap the supplied insulation material around the tubing joints, and fasten in place with vinyl tape or other means. Failure to insulate the tubing may result in water leakage from condensation.

● Plug all gaps at tube through-holes in the unit with

insulation or a similar substance to prevent air leakage.

● When connecting an embedded ceiling type unit

(like this one) to a refrigerant system where individual operation is possible, install 2 RAP valve kits (EEV22-28) in parallel. (For details on connecting the RAP valve kit, refer to the manual that came with the kit.)

224 Type 280 Type

Wide tube (mm) φ19.05 (Brazing connection) φ22.22 (Brazing connection)

Narrow tube (mm)

φ9.52 (Flare connection) φ9.52 (Flare connection)

Fig. 3-118

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 70

Page 71

ADPS

Air-outlet grille

Air-intake grille

Fig. 3-119

Fig. 3-120a

Fig. 3-120b

Fig. 3-120c

Min. 50 mm

Inspection plu

Min.

100 mm

Good

Min. 1/100

Not good

3-39. 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. 3-120a)

(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. 3-120b.

(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. 3120c)

(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)

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 71

Page 72

ADPS

3-40. 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 (m3/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

H: At shipment

Fig. 3-121

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 72

Page 73

ADPS

Fig. 3-122b

Fig. 3-122a

3-41. Increasing the Fan Speed (280 Type only)

(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 2 booster cables from option carton box

(sockets at both ends). (4) Securely connect the booster cable’s 2 sockets

between the disconnected fan motor sockets in

step 2 as shown in Fig. 3-122a. (5) Place the cable neatly in the box and reinstall the

cover plate.

Booster cable

Electrical component box

(At shipment) (Booster cable installed)

Fan motor socket

Fan

motor

NOTE

HT : Using booster cable

At shipment

60 70

Air Flow (m

/minute)

External Static Pressure

150

200

250

Limit line

100

(mmAq)

(Pa)

70 80 90

Air Flow (m

/minute)

External Static Pressure

150

200

250

Limit line

100

(mmAq)

(Pa)

, H, HT

224 Type

280 Type

Indoor Fan Performance

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 73

Page 74

AFS

AFNS

■ Floor-Standing Type (AFS Type)

Concealed Floor-Standing Type (AFNS Type)

3-42. 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.

3-43. 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 (narrow tube) Refrigerant connection outlet (wide 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. 3-123a

Fig. 3-123b

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 3-9

Type

Length

A B C Narrow Wide

tube tube

22, 28, 36 1065 665 632 9.52 12.7

56, 73 1380 980 947 9.52 15.88

Unit: mm

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 74

Page 75

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 (narrow tube) Refrigerant connection outlet (wide tube) Level adjusting bolt Drain outlet (20A) Flange for air-outlet duct

Table 3-10

Type

Length

A B C D Narrow Wide

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 75

Page 76

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

3-44. 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.

3-45. 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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 76

Page 77

AFS

AFNS

Fig. 3-127

Fig. 3-128

CAUTION

Insulate both wide and narrow 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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 77

Page 78

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

3-46. 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.

3-47. 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 cen-

ter 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.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 78

Page 79

AES

4. HOW TO INSTALL THE OUTDOOR UNIT

4-1. Transporting

When transporting the unit, have it delivered as close to the installation site as possible without unpacking.

Use a hook for suspending the unit. (Fig. 4-1)

● When hoisting the unit, pass the lifting ropes under

the bottom plate as shown in the figure at right. During hoisting, the angle between the ropes and the top panel must be 70° or greater so that the ropes do not touch (or damage) the fan guard. (Use 2 ropes 7 meters in length or longer.) In addition, when passing the ropes under the bottom plate, adjust them so that the ropes are within the supplied strips of cardboard on each side of the bottom plate as shown in the figure.

● Use panels or padding at each location where the

ropes contact the outer casing or other parts in order to prevent these parts from being scratched or damaged. In particular, use the supplied cardboard to prevent the top panel from being scratched.

● Be careful of the fan.

There is danger of injury if the fan starts to turn during inspection. Be sure to turn OFF the remote power switch before beginning inspection.

4-2. Installling the Outdoor Unit

(1) Use anchor bolts (M12) or similar to securely

anchor the unit in place. (Fig. 4-2) (2) Be sure the rubber vibration insulator and platform

extend to the inside of the legs. In addition, the

washers used to anchor the unit from the top must

be larger than the installation anchor holes.

(Fig. 4-2 and 4-3)

Fig. 4-1

Supplied cardboard strips

Fan guard

Rope

70˚

Fig. 4-2

Fig. 4-3

A B

44 64

The vibration insulator, base, and platform must accommodate all of the bottom plate and insulation anchor brackets (108 mm).

Outdoor unit

bottom plate

Installation anchor bracket

Vibration insulator

Anchor bolts (more than M12)

Washer

CAUTION

21.5

830

890

Installation anchor hole (15* 20)

(Detailed view of leg)

Fig. 4-4

830

890

Installation anchor hole (4 15* 20 hole)

(Anchor bolt positions)

Table 4-1

Type

783

A B

823

925

965

925

Master unit (DC inverter unit)

Slave unit (constant speed unit)

Unit: mm

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 79

Page 80

AES

Fig. 4-5

125

830

890

925

Fig. 4-6

125

925

783

830

890

Installation examples

Unit: mm

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 80

Page 81

Control wiring

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

(F) Inter-outdoor unit control wiring

0.75 mm

(AWG #18)

0.75 mm

(AWG #18)

0.75 mm

(AWG #18)

Use shielded wiring* Use shielded wiring Use shielded wiring

0.75 mm

(AWG #18)

Use shielded wiring

Max. 1,000 m

Max. 500 m

Max. 500 m (Total)

Max. 500 m

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 cir-

cuit breaker for overcurrent protection should be

provided in the exclusive line. (3) To prevent possible hazards from insulation fail-

ure, the unit must be grounded. (4) Each wiring connection must be done in accor-

dance with the wiring system diagram. Wrong

wiring may cause the unit to misoperate or

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

compressor, or any moving parts of the fan. (6) Unauthorized changes in the internal wiring can be

very dangerous. The manufacturer will accept no

responsibility for any damage or misoperation that

occurs as a result of such unauthorized changes.

(7) Regulations on wire diameters differ from locality

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

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

(8) To prevent malfunction of the air conditioner

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

● The remote control wiring and the inter-unit control

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

● Use shielded wires for inter-unit control wiring

between units and ground the shield on both sides.

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

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

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

Outdoor unit

(A) Power supply

Wire size Max. length

Wire size

Max. length

AES06MI2H 113 m

15 A

AES08MI2H 74 m

30 A

AES10MI2H 60 m

35 A

AES12MI2H 55 m

40 A

AES08M2H 47 m

35 A AES10M2H 46 m 40 A AES12M2H

4 mm 6 mm 6 mm 6 mm 6 mm 6 mm 6 mm

2.5 mm

6 mm

10 mm

6 mm

10 mm

39 m 50 A

Time delay fuse or circuit capacity

70 m 74 m 60 m 91 m 47 m 77 m 65 m

16A 35A 35A 50A 35A 50A 50A

Indoor unit

Time delay fuse or

circuit capacity

(B) Power supply

2.5 mm

AWS

Type

Max. 150 m Max. 130 m

Max. 60 m

Max. 50/30 m

10 ~ 16A 10 ~ 16A 10 ~ 16A 10 ~ 16A

ADPS (224/280)

ADPS (73, 106, 140)

AS1S, ASBS, AS2S, ASS, ACS, ADS, AFS, AFNS

NOTE

* With ring-type wire terminal.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 81

Page 82

5-3. Wiring System Diagrams

3 4 5

WHT

Remote controller

BLK

1 2

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

L2 L3

380-415V-3N 5

Ground

L N

BLK

3 4 5

Outdoor unit AD unit

Power supply 220-240V 50Hz

Ground

Power supply

L2 L3 N

Ground

380-415V-3N 5

Power supply 220-240V 50Hz

Ground

1 2

Inter-outdoor-unit control wiring

NOTE

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

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

(2) The basic connection diagram of the indoor unit

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

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

before turning the power on.

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

112. Auto. address setting can be executed by remote controller automatically. Refer to page 117.

1(L)2(N) Power

supply

Inter-unit

control wiring

Remote

controller

8P terminal board

R1 R2

1 2 U1 U2 R1 R2

AWS Type

1(L)2(N)

12345

Power

supply

Inter-unit

control wiring

5P terminal board

AS1S, ASBS, ADS, ADPS, AFS, AFNS

1(L) 2(N) Power

supply

Inter-unit

control wiring

Remote

controller

AS2S, ASS, ACS Type

7P terminal board

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 82

Page 83

Outdoor unit Outdoor unit Outdoor unit

Indoor unit Indoor unit Indoor unit Indoor unit

Indoor unit

more than 1 m

Branch point

16 or fewer

Indoor unit

Indoor unit Indoor unit Indoor unit

less than 1 m

Indoor unit

Outdoor unit Indoor unit Indoor unit Indoor unit

Indoor unit Indoor unit Indoor unit

Outdoor unit

Indoor unit

Branch point

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

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

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

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

Outdoor unit Outdoor unit Outdoor unit

Prohibited

Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit

Fig. 5-1

Fig. 5-2

Fig. 5-3

CAUTION

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

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

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

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 83

Page 84

Fig. 5-4

Shielded wire

Ground

Fig. 5-5

Stranded wire

Ring pressure terminal

Strip 10 mm

Fig. 5-6

Wire

Special washer

Screw

Ring pressure terminal

Terminal plate

Screw and Special washer

Ring pressure terminal

Wire

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

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

WARNING

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

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

How to connect wiring to the terminal

■ For stranded wiring

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

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

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

minal screw(s) on the terminal plate.

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

clamp each stripped wire end with a ring pressure terminal.

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

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 84

Page 85

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 85

Page 86

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 86

Page 87

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 87

Page 88

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 88

Page 89

REM

6-6. Wiring the Remote Controller

● Connection diagram

● Use 0.5 mm2– 2 mm2wires.

(1) Strip the insulation to approximately 14 mm from

the ends of the wires that will be connected.

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

nection at the wire joint.

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

nection is soldered, insulate the wires using insulation tape.

● Use the remote controller cord (optional) for remote

controller wiring.

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

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

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

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

Terminal board for indoor unit remote controller wiring

1 2

Remote controller wiring (field supply)

Connector

Remote controller unit

Power wire from remote controller unit

Approx. 200 mm

Remote controller wiring

Power wire from remote controller unit

Provided wire joint (white)

Wire joint CE-1, white

Remote controller cord (optional)

Connector

Lead wire anchor

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 89

Page 90

REM

6-7. Meanings of Alarm Messages

Table of Self-Diagnostics Functions and Description of Alarm Displays.

Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on the wired remote controller.

● Viewing the LED 1 and 2 (D72 and D75) alarm displays

Possible cause of malfunction

Remote controller is detecting error signal from indoor unit.

Indoor unit is detecting error signal from main outdoor unit.

Improper setting of indoor unit or remote controller.

During auto. address setting, number of connected units does not correspond to number set.

When turning on the power supply, number of connected units does not correspond to number set. (Except R.C. address is “0.”)

Indoor unit communication error of group control wiring.

Improper setting.

Alarm

message

<E01>

<E02>

<E06>

<<E03>>

E04

E08

<<E09>>

E12

E15

E16

E20 E24 E25

E26

E29

E18

<L03>

L04 L05

L06 L07

L08

<<L09>>

L17

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

Error in receiving serial communication signal. (Signal from main indoor unit in case of group control) Ex: Auto address is not completed.

Error in transmitting serial communication signal.

Error in receiving serial communication signal. When turning on the power supply, the number of connected

indoor units does not correspond to the number set. (Except R.C.

address is “0.”)

Indoor unit address setting is duplicated. Remote controller address connector (RCU. ADR) is duplicated.

(Duplication of main remote controller) Starting auto. address setting is prohibited.

Error in auto. address setting. (Number of connected indoor units is less than the number set)

Error in auto. address setting. (Number of connected indoor units

is more than the number set)

Error of outdoor unit address setting. The number of connected main and sub outdoor units do not

correspond to the number set at main outdoor unit P.C.B.

Error of sub outdoor unit in receiving serial communication signal from main outdoor unit.

Error of main indoor unit in receiving serial communication signal

from sub indoor units.

Duplication of main indoor unit address setting in group control. Duplication of outdoor R.C. address setting.

Group control wiring is connected to individual control indoor unit. Indoor unit address is not set. Capacity code of indoor unit is not set.

There are 2 or more indoor units controllers which have operation mode priority in 1

refrigerant circuit.

Priority set remote

controller

Non-priority set remote

controller

Error of the main outdoor unit in receiving serial communication signal from the indoor unit.

This alarm message shows that the auto address connector CN100 is shorted while other RC line is executing auto address operation.

No indoor unit is connected during auto. address setting. Main outdoor unit is detecting error signal from sub outdoor unit.

Mis-match connection of outdoor units which have different kind of refrigerant.

Serial communication errors Mis-setting

Protective device in indoor unit is activated.

<<P01>> <<P09>> <<P10>>

Thermal protector in indoor unit fan motor is activated. Improper wiring connections of ceiling panel. Float switch is activated.

Activation of protective

device

Continued

This alarm message shows when the indoor unit for multiple-use is not connected to the outdoor unit.

Capacity code of outdoor unit is not set.

L02

L10

L18

4-way valve operation failure

LED 1

LED 2

Alarm contents

Alternating

Alarm display LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats. M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm 6: L alarm N = Alarm No.

Example: LED 1 blinks 2 times, then LED 2 blinks 17 times. The cycle then repeats.

Alarm is "P17."

( : Blinking)

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 90

Page 91

REM

Possible cause of malfunction

Thermistor fault

Protective device for compressor is activated

Indoor thermistor is either open or damaged.

Outdoor thermistor is either open or damaged.

Protective device for compressor No. 1 is activated.

Protective device for compressor No. 2 is activated.

Low oil level. Oil sensor fault.

Indoor coil temp. sensor (E1) Indoor coil temp. sensor (E2)

Indoor coil temp. sensor (E3) Indoor suction air (room) temp. sensor (TA) Indoor discharge air temp. sensor (BL) Comp. No. 1 discharge gas temp. sensor (DISCH1) Comp. No. 2 discharge gas temp. sensor (DISCH2)

Outdoor No. 1 coil gas temp. sensor

(EXG1)

Outdoor No. 1 coil liquid temp. sensor

(EXL1)

Outdoor air temp. sensor (AIR TEMP)

Outdoor No. 2 coil gas temp. sensor (EXG2) Outdoor No. 2 coil liquid temp. sensor (EXL2)

Overload current is detected. Lock current is detected. Current is not detected when comp. No. 1 is ON.

Overload current is detected.

Lock current is detected.

Current is not detected when comp. No. 2 is ON.

Low pressure switch is activated.

Comp. No. 1 oil sensor Comp. No. 2 oil sensor

EEP ROM on indoor unit P.C.B. failure

Alarm

message

<<F01>> <<F02>> <<F03>> <<F10>> <<F11>>

F04 F05 F06 F07 F08 F12 F16 F23 F24 F29

F31 H01 H02 H03

H05

H15

H11 H12 H13

H06 H07 H08 H27

(Disconnection, etc.)

High pressure sensor

EEP ROM on the main or sub outdoor unit P.C.B. is a failure.

Discharge gas temperature of the comp. No. 1 is not detected. Temp. sensor is not seated at the sensor holder.

Discharge gas temperature of the comp. No. 2 is not detected.

Protective device in outdoor unit is activated.

P02

P03 P04 P05

P17 P22

P26

H31

P16

P29

Compressor thermal protector is activated. Power supply voltage is unusual. (The voltage is more than 260 V or less than 160 V between L and N phase.)

Incorrect discharge temperature. (Comp. No. 1) High pressure switch is activated. Negative (Defective) phase. Incorrect discharge temperature. (Comp. No. 2)

Activation of protective device

Outdoor unit fan motor is unusual.

Inverter for compressor is unusual. (DC compressor does not operate.)

Overcurrent at time of compressor runs more than 80Hz (DCCT secondary current or ACCT primary current is detected at a time other than when IPM has tripped.)

Compressor running failure resulting from missing phase in the compressor wiring, etc. (Start failure not caused by IPM or no gas.)

IPM trip (IPM current or temperature)

Compressor intake port temperature sensor (RDT)

Continued

Negative (defective) N phase.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 91

Page 92

REM

Alarm messages displayed on system controller

Indoor or main outdoor unit is not operating correctly. Mis-wiring of control wiring between indoor unit, main outdoor unit

and system controller.

Indoor or main outdoor unit is not operating correctly. Mis-wiring of control wiring between indoor unit, main outdoor unit and system controller. CN1 is not connected properly.

When using wireless remote controller or system controller, in order to check the alarm message in detail, connect wired remote controller to indoor unit temporarily.

Error in transmitting serial communication signal

Error in receiving serial communication signal

Protective device of sub indoor unit in group control is activated.

Serial communication errors

Mis-setting

Activation of protective device

C05

C06

P30

1. Alarm messages in << >> do not affect other indoor unit operations.

2. Alarm messages in < > sometimes affect other indoor unit operations depending on the fault.

NOTE

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 92

Page 93

7. HOW TO PROCESS TUBING

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

7-1. Connecting the Refrigerant Tubing

Use of the Flaring Method

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

Flaring Procedure with a Flare Tool

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

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

(2) Remove burrs at 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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 93

Page 94

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 narrow tube (liquid tube)

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

Cautions During Brazing

● Replace air inside the tube with nitrogen gas to

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

● Do not allow the tubing to get too hot during

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

● Use a reducing valve for the nitrogen cylinder.

● Do not use agents intended to prevent the for-

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

7-2. Connecting Tubing Between Indoor and 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

6.35 (1/4")

9.52 (3/8")

12.7 (1/2")

15.88 (5/8")

19.05 (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 narrow tube,

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 94

Page 95

Fig. 7-8

Fig. 7-7

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 wide tube connections. Then cover up the tubing connections with the flare insulator, and fill the gap at the union with the supplied black insulation tape. Finally, fasten the insulator at both ends with the supplied vinyl clamps. (Fig. 7-8)

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

Vin

l clamps (supplied)

Flare nut

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

Seal

Flare insulator

Vinyl clamp

Insulation tape

Refrigerant tubing and insulator (not supplied)

Drain pipe and insulator (not supplied)

Drain insulator and clamp. Large (supplied)

Packing clamp. Small hose band (supplied)

Cosmetic (finishing) tape

Wide tubing

Narrow tubing

Insulation

Balance tubing

Three tubes arranged together

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.

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 95

Page 96

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 96

Page 97

AES

Fig. 8-1

Fig. 8-2

Fig. 8-3

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

Leak test

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

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

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

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

(3) Pressurize the system to no more than 38 kgf/cm

G with dry nitrogen gas and close the cylinder valve when the gauge reading reaches 38 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

Open

Narrow tube

Wide tube

Balance tube

Nitrogen gas cylinder (In vertical standing position)

Open

Cylinder valve

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.)

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 97

Page 98

AES

Fig. 8-4

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

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

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

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

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:

Manifold valve

Pressure gauge

Vacuum pump

Outdoor unit

Open

Narrow tube

Wide tube

Balance tube

Open

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 98

Page 99

AES

Fig. 8-5

Fig. 8-6

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. Please confirm that the gauge pressure is under 667 Pa (–755 mmHg, 5 Torr) after 4 to 5 minutes of vacuum pump operation.

Charging additional refrigerant

● Charging additional refrigerant (calculated from the

narrow tube length as shown in Section 1-8 “Additional Refrigerant Charge”) using the narrow tube service valve. (Fig. 8-5)

● Use a balance to measure the refrigerant accurately.

● If the additional refrigerant charge amount cannot

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

Finishing the job

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

valve stem counter-clockwise to fully open the valve.

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

clockwise to fully open the valve.

(3) Loosen the charge hose connected to the wide

tube service port (1/4 in.) slightly to release the pressure, then remove the hose.

(4) Replace the 1/4 in. flare nut and its bonnet on the

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

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

service valves and fasten them securely.

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

NOTE

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 wide tube is turned all the way out (“BACK SEAT” position.

Valve

Liquid

Manifold valve

Pressure gauge

Lo Hi

Outdoor unit

Narrow tube

Wide tube

Balance tube

Open

R410A

Outdoor unit

Open

Narrow tube

Wide tube

Balance tube

Open

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 99

Page 100

AS1S

100

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

04-396 InverterW_p51-108 ARGO 12/21/04 10:17 AM Page 100