Argo ASS106MH Installation instructions

INSTALLATION INSTRUCTIONS

- MULTISET System Air Conditioner -

DC Inverter 2-Way R410A

R410A Models

Indoor Units

AS 1S **

22 28 36

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

45

56 64 73 106 140

AS B S ** AS B S 28MH AS B S 36MH AS B S 56MH AS B S 73MH

AS 2S **

2-Way Air Discharge

S emi-C oncealed

AS 2S 22MH AS 2S 28MH AS 2S 36MH AS 2S 56MH AS 2S 73MH

AS S

AW S

AC S

ADS

4-Way Air Discharge

S emi-C oncealed

AS S 22MH* AS S 28MH* AS S 36MH*

Wall-mounted

C oncealed-Duct

ADP S **

C oncealed-Duct

High-S tatic Pressure

AF S **

Floor-standing

AF NS **

C oncealed-Floor

S tanding

AWS 22MH A WS 28MH A WS 36MH

ADS 22MH*

AC S 36MH**

ADS 28MH* ADS 36MH*

AWS 56MH

AD45MHG *

AC S 56MH**

ADS 56MH*

AF S 22MH AF S 28MH AF S 36MH

AF NS 22MH AF NS 28MH A F NS 36MH

AS S 45MH*G AS S 56MH*

AF S 56MH

AF NS 56MH

F C

Floor-C eiling

S D S lim Ducted

F C 22MHG * F C 28MHG * F C 36MHG * F C 45MHG * F C 56MHG *

S D22MHG * S D28MHG * S D36MHG * S D45MHG * S D56MHG *

AD64MHG *

F C 64MHG *

S D64MHG *

AS S 73MH* AS S 106MH* AS S 140MH*

AWS 73MH

AC S 73MH AC S 106MH AC S 140MH

ADS 73MH ADS 106MH ADS 140MH

ADP S 73MH ADP S 106MH ADP S 140MH

AF S 73MH

AF NS 73MH

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

**Indoor Unit Types not available

Outdoor Units

AE S

Dc Inverter Main Unit

C onstant S peed (S ub) Unit

R efrigerant R 410A is used in the outdoor units

AE S 06MI2H, AE S 08MI2H, AE S 10MI2H, AE S 12MI2H

AE S 08M2H, AE S 10M2H, AE S 12M2H

Optional controllers

R E M

Wireless R emote C ontroller

Wireless R emote Controller + wal l receiver

R E M HW

R E M HLAS S

R E M HLF C AS S

R E M HLAC S

R E MHL + wall receiver for

AS S /AC S /ADS /F C /S D

R E M HLAWS

R E M HWS M

R S M

R E M HW64S

R E M HWT

AS 1S

AS B S

AS 2S

AS S

AWS

AC S

ADS

AF NS

AE S

R E M

W

2005

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

WARNING

This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.

CAUTION

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

WARNING

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.

NOTE

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

CAUTION 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.

2


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 (m 3 )

≤ Density limit (kg/m 3 )

The density limit of refrigerant which is used in multi air conditioners is 0.3 kg/m 3 (ISO 5149).

NOTE

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:

Outdoor unit e.g., charged amount (10 kg) e.g., charged amount (15 kg)

Indoor unit

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

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.

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

(1) No partition (shaded portion)

(2) When there is an effective opening with the adjacent 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).

Outdoor unit

Refrigerant tubing

Indoor unit

(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.

Refrigerant tubing

Outdoor unit

Very small room

Indoor unit

Small room

Medium room

Large room

Mechanical ventilation device – Gas leak detector

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

40 m 2

35

30

25

20

15

10

5

0

Range below the density limit of 0.3 kg/m 3

(countermeasures not needed)

Range above the density limit of 0.3 kg/m

(countermeasures needed)

3

10 20 30

Total amount of refrigerant kg

3


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 Seamless Pipes and Tubes.”

For tubes of

φ

19.05 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

φ

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

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.

Unit: mm

Copper tube

Material

Outer diameter

Wall thickness

Copper tube

Material

Outer diameter

Wall thickness

6.35

0.8

19.05

1.0

9.52

0.8

22.22

1.0

0

12.7

0.8

15.88

1.0

25.4

1.0

1/ 2 H, H

28.58

1.0

31.75

1.1

38.1

1.35

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.

Item tool compatible with R410A

Manifold gauge Yes No

Charge hose Yes No

Vacuum pump Yes Yes

Leak detector Yes No

Flaring oil Yes No

Types of refrigerant, refrigerating machine oil, and pressure gauge are different.

To resist higher pressure, material must be changed.

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 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.

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.

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

Manifold gauge

Vacuum pump

Outlet

Inlet

4


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

Liquid

Valve

5


Page

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

CONTENTS

Page

■ 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


3-27. Duct for Fresh Air

3-28. Shaping the Tubing


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

■ Concealed-Duct Type (ADS Type) . . . . . . . . . .62





3-34. Increasing the Fan Speed

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


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





■ 1-Way Air Discharge Semi-Concealed Slim Type

(ASBS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .38






(AS2S Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .43





■ 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)


3-38. Installing the Refrigerant Tubing


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


3-43. Dimensions and Part Names

3-44. Removing and Attaching the Front Panel

(Floor-Standing Type)

3-45. Installing the Refrigerant Tubing


3-47. Installing the Remote Controller

6


Page

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 Diameter 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


(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



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

9-4. Before Installing the Ceiling Panel


9-6. When Removing the Ceiling Panel for Servicing


(ASS Type) . . . . . . . . . . . . . . . . . . . . . . . . . . .105

9-7. Before 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

7

Page

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




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




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)


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.

Table

1-1

1-2

1-3

Type

1-Way Air Discharge Semi-Concealed

1-Way Air Discharge Semi-Concealed Slim

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

1-9

Concealed-Duct High Static Pressure

Floor-Standing & Concealed Floor-Standing

CAUTION

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

1-4. Additional Materials Required for Installation

1. Refrigeration (armored) tape

2. Insulated staples or clamps for connecting wire

(See your local codes.)

3. Putty

4. Refrigeration tubing lubricant

5. Clamps or saddles to secure refrigerant tubing

6. Scale for weighing

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.

8


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

Part Name

Flare insulator

Figure

Insulating tape

Vinyl clamp

Hose band

Packing

Drain insulator

Drain hose

(Black)

(White)

3

2

8

Q’ty

2

Remarks

For wide and narrow tubes


For wide and narrow tube flare nuts

For flare insulator

1

1

For securing drain hose

For drain joint

1 For drain joint

1 For securing drain hose

1 For measuring clearance between the unit and ceiling Installation gauge

Special washer 8 For suspension bolts

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

Figure Part Name

Full-scale installation diagram

Special washer

Flare insulator

(Black)

8

2

2

Q’ty

1

Remarks

For determining suspension bolt pitch

For temporarily suspending indoor unit from ceiling



Insulating tape

(White)

Vinyl clamp

Hose band

Packing

Drain insulator

Sealing putty

Cable

Drain hose

1

1

1

2

8

1

1

1


For flare insulator


For drain joint

For drain joint

For sealing recessed portion of power supply

Connection cable for fan motor


9




Flare insulator

Insulating tape (White)

Vinyl clamp

Hose band

Packing

Drain insulator

Installation gauge

(Use the packaging side pad.)

M5

×

L40 (Black screw, with washer)

Special washer

Q’ty

2

Remarks


For wide and narrow tube flare nuts 2

8

1

1

For flare insulator and drain insulator


For drain joint

1

1

1

4

For drain joint

Gauge A

(Install on tubing side.)

Gauge B

(Install on opposite side of tubing.)

For fastening installation gauges

8

1

For suspension bolts

For securing drain hose Drain hose (L = 25cm)

Putty 1 For sealing recessed portion of power supply




Flare insulator

Insulating tape

Hose band

Packing

Drain insulator

Drain hose

Washer

(White)

Screw

Q’ty

1

Remarks

Printed on container box

2

2



1 For securing drain hose

For drain joint 1

1 For drain joint

For securing drain hose 1

8 For suspension bolts

4 For full-scale installation diagram

Table 1-5 (Wall-Mounted)

Part Name

Plastic cover

Tapping screw

Insulator

Figure

Truss-head Phillips

4

×

16 mm

Q’ty Remarks

1 For improved tubing appearance

10 For fixing the rear panel

1 For insulating flare nut (73 type only)

10


Table 1-6 (Ceiling-Mounted)

Part Name

Special washer

Drain insulator

Flare insulator

Insulating tape

Vinyl clamp

Eyelet


Drain hose

Hose band

Figure Q’ty Remarks

4 For temporarily suspending indoor unit from ceiling

T10

1 For drain hose joint

T5

White

(heat-resisting)

T3

2 sets

For wide and narrow tube joints

2 For wide and narrow flare joints

8

1

For flare and drain insulator

For power supply inlet

1 Printed on container box

L140

1

2

For main unit + PVC pipe joints

For drain hose connection

Table 1-7 (Concealed-Duct)

Part Name

Washer

Flare insulator

Figure Q’ty

8

Remarks

For suspending indoor unit from ceiling

2 For wide and narrow tubes

2 For wide and narrow tubes flare nuts Insulating tape

Drain insulator 1

Hose band

Packing

Drain hose

Sealing putty

1

Vinyl clamp

Booster cable*

8

* Booster cable is housed inside the electrical component box.

●

●

Use 3/8" for suspending bolts.

Field supply for suspending bolts and nuts.

1

1

1

1

For drain hose joint


For drain joint

For sealing recessed por tion of power supply

For flare and drain insulators

Connector for changeover to HT tap.

11


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

Part Name Figure

Special washer

Flare insulator

Drain socket

Tube connector

Q’ty

8

Remarks

For suspending indoor unit from ceiling


1

1

For drain pipe connection

For increasing size of narrow tube from

φ

6.35 to

φ

9.52 mm (only for 73 type)

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


Connection pipe

Q’ty

1

Remarks

For connecting wide tubes

Flare insulator

Insulating tape


(White) 2 For wide and narrow tube flare nuts

(Black) 2 For wide and narrow tubes Insulating tape

Vinyl clamp 7 For ends of flare insulator

Insulating tape (black and long)

Drain insulator

1 For drain pipe

1 For drain hose joint

Table 1-10 (Outdoor Unit)

Part Name

Connection tube

(for wide tubing)

Connection tube

(for narrow tubing)

Seal label

Instruction manual

Explanatory booklet

Figure seal paper paper

Main unit (DC inverter unit)

Q’ty

Sub unit (constant speed) unit)

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)

0 0 1 1 0 1 1

0 0 0 1 0 0 1

1

1

1

1

1

1

1

1

1

1

1

1

0

1

0

0

1

0

1

0 0 hp = horsepower

12


1-5. Tubing Size

Table 1-11a Main Tubing Size (LA) Unit: mm kW

Total system horsepower

16.0

6

22.4

8

28.0

10

33.5

12

40.0

14

Combined outdoor units

(6)

–

–

–

(8)

–

–

–

(10)

–

–

–

Wide tubing

(mm)

Narrow tubing

(mm)

ø19.05

ø19.05

ø22.22

ø9.52

ø9.52

ø9.52

(12)

–

–

–

(6)

–

ø25.4

8

–

ø12.7

45.0

16

50.4

18

56.0

20

ø28.58

ø15.88

61.5

22

68.0

24

73.0

26

78.5

28

85.0

30

ø31.75

ø19.05

90.0

32

96.0

34

(8)

–

8

–

(10) 8

– –

(10) 10

– –

(12) 10

– –

(12) 12

– –

(10)

8

8 (10) 10

– 8 –

(10) 10

10 –

(12) 10

10

(12) 12

10 kW

Total system horsepower

Combined outdoor units

Wide tubing (mm)

Narrow tubing (mm)

101.0

36

(12) 12

12

106.5

38

(10)

10

10

8

113.0

(10)

10

40

10

10

118.0

(12) 10

10

42

10

ø38.1

ø19.05

123.5

44

(12) 12

10 10

130.0

46

135.0

48

(12) 12

12 10

(12) 12

12 12

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 φ 9.52.

■ 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...)

Total capacity after distribution

Tubing size

Below kW

Over kW

Wide tubing (mm)

Narrow tubing (mm)

7.1

(2.5 hp)

–

ø12.7

ø9.52

16.0

(6 hp)

7.1

(2.5 hp)

ø15.88

ø9.52

22.5

(8.1 hp)

16.0

(6 hp)

ø19.05

ø9.52

30.0

(11 hp)

22.5

(8.1 hp)

ø22.22

ø9.52

42.0

(15 hp)

30.0

(11 hp)

ø25.4

ø12.7

52.4

(19 hp)

42.0

(15 hp)

ø28.58

ø12.7

70.0

(25 hp)

42.0

(15 hp)

ø28.58

ø15.88

Unit: mm hp = horsepower

98.0

(35 hp)

70.0

(25 hp)

–

98.0

(35 hp)

ø31.75

ø19.05

ø38.1

ø19.05

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.)

Table 1-12 Outdoor Unit Tubing Connection Size (

Main unit (DC inverter unit) kW

16.0

22.4

28.0

33.5

Wide tubing

ø19.05

ø22.22

Brazing connection

ø25.4

A

–

D

) Unit: mm

Sub unit (constant speed unit)

22.4

22.5

28.0

28.1

33.5

33.6

ø19.05

ø22.22

ø25.4

Brazing connection

Narrow tubing

Balance tubing

ø9.52

Brazing connection

ø9.52

Flare connection

ø12.7

ø9.52

ø12.7

Brazing connection

ø9.52

Flare connection

13


Table 1-13 Indoor Unit Tubing Connection (

Indoor unit type

Wide tubing (mm)

Narrow tubing (mm)

22 28

ø12.7

ø6.35

36 56

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

φ

19.05.

1

,

73

2

...

40

)

106

ø15.88

140

ø9.52

Unit: mm

224

ø19.05

280

ø22.22

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

Wide tubing size (mm)

90

°

elbow

45

°

elbow

U-shape tube bent (R60 100 mm)

Trap bend

Y-branch distribution joint

Ball valve for service

12.7

0.30

0.23

0.90

2.30

15.88

19.05

22.22

0.35

0.42

0.32

0.48

0.36

0.26

1.05

1.26

1.44

2.80

25.4

0.52

0.39

1.56

28.58

0.57

0.43

1.71

4.70

3.20

3.80

4.30

Equivalent length conversion not needed.

31.8

0.70

0.53

2.10

5.00

Equivalent length conversion not needed.

38.1

0.79

0.59

2.37

5.80

Table 1-15 Required Copper Tubing Dimensions

Material

Outer diameter

Copper tubing

Wall thickness

6.35

0.8

9.52

0.8

0

12.7

0.8

Material

Outer diameter

Copper tubing

Wall thickness

19.05

1.0

22.22

1.0

Unit: mm

15.88

1.0

1/2 H, H

25.4

28.58

1.0

1.0

31.75

1.1

38.1

1.35

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

Narrow tubing size

φ

6.35

φ

9.52

φ

12.7

φ

15.88

φ

19.05

φ

22.22

Amount of refrigerant charge/m (g/m)

26

56

128

185

259

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.

14


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

DC

(kg)

AD

(kg)

AES06MI2H

7.5

–

–

AES08MI2H

10.0

AES08M2H

10.0

AES10MI2H

10.0

AES10M2H

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.

CAUTION

● Sub units cannot be used independently.

AES12MI2H

10.0

AES12M2H

10.0

Table 1-18 Combination of Outdoor Units

22.4

28.0

33.5

40.0

Total cooling capacity 16.0

(kW)

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

08

AD unit (sub)

45.0

50.4

56.0

08

08

10

08

10

10

61.5

12

10

68.0

73.0

78.5

85.0

90.0

12

12

10

08

08

10

10

08

10

10

10

12

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)

AD unit (sub)

12

12

10

12

12

12

10

10

10

08

10

10

10

10

12

10

10

10

12

12

10

10

12

12

12

10

12

12

12

12

1-9. System Limitations

Table 1-19 System Limitations

Max. No. allowable connected outdoor units

Max. capacity allowable connected outdoor units

Max. connectable indoor units

Max. allowable indoor/outdoor capacity ratio

4

135 kW (48 hp)

40

50 – 130 %

15


1-10. Tubing Length

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

D

Sub unit

C

Sub unit

L5

1.

2.

3.

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.

H3

D

Balance tubing

(ø9.52)

C Sub unit

B

Main unit A

B A

LM

LO2 LO1 LB

LA

Explanation of symbols

Distribution joint

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

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

LF

LG

LC LD

4

Max. 40cm

For extension

For extension

Max. 40cm

LH

1

L4

L2

LE

5

2

3

6

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.

40

L1

H2

H1

R410A distribution joint

DDVE135 (for outdoor unit)

DDVE68 (for outdoor unit)

DDVI135 (for indoor unit)



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

Items

Allowable tubing length

Allowable elevation difference

Marks

L1

∆

L (L2 – L4)

Contents

Actual length

Max. tubing length

Equivalent length

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

+

A

L1+

+

1

+

2

+~

40

Total max. tubing length including length of

B

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

L5

H1

H2

H3

Distance between PC and AD unit

When outdoor unit is installed higher than indoor unit

When outdoor unit is installed lower than indoor unit

Max. difference between indoor units

Max. difference between outdoor units

L = Length, H = Height

Length (m)

> 150

> 175

> 40

>

>

80

30

> 300

>

>

>

>

>

10

50

40

15

4

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

φ

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.)

16


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: m 3 )

≤

Limit density 0.3 (kg/m 3 )

The limit density of refrigerant which is used in this unit is 0.3 kg/m 3 (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.)

CAUTION

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

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.)

17

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

80

75

70

65

60

55 m 2

100

95

90

85

50

45

40

35

30

25

20

15 m 3

270.0

256.5

243.0

229.5

216.0

202.5

189.0

175.5

162.0

148.5

135.0

121.5

108.0

94.5

81.0

67.5

54.0

40.5

Range below the density limit of

0.3 kg/m 3

(Countermeasures not needed)

Range above the density limit of

0.3 kg/m 3

(Countermeasures needed)

20 30 40 50 60 70 80 kg

Total amount of refrigerant

Tube branching methods (horizontal use)

°

15 to 30

B

B

A

Horizontal line

A

View as seen from arrow

Arrow view

Types of vertical trap specifications

(When using ball valve)

Main tubing

Ball valve

(BV: purchased separately)

Indoor unit (more than 2 units)

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

Indoor unit (1)

(When not using ball valve)

Main tubing

Horizontal

Indoor unit

Branch tubing is directed upward.

More than

20 cm

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

Indoor unit is directed downward


1-13. Optional Distribution Joint Kits

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

Table 1-21

Model name Cooling capacity after distribution Remarks

1. DDVE68

2. DDVE135

68.0 kW or less

135.0 kW or less

For outdoor unit

For outdoor unit

3. DDVI16

4. DDVI68

5. DDVI135

22.4 kW or less

68.0 kW or less

135.0 kW or less

For indoor unit

For indoor unit

For indoor unit

1. DDVE68

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

53

D C

C

Wide tube

395 74

D

D

E F

230

D

D

E

F

I H

G G F E

Narrow tube

H

I

G

G

F

E

E F G

340

G

H I

50

Thermal insulation Thermal insulation

Table 1-22 Dimensions for connections of each part

Position

Dimension

A

–

B

–

C

φ

28.58

D

φ

25.4

E

φ

22.22

F

φ

19.05

G

φ

15.88

H

φ

12.7

I

φ

9.52

Unit: mm

J

–

2. DDVE135

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

B A

Wide tube

622

BCD

IH

G GFE

Narrow tube

I

H

G

G

F

E

EFG G

340

HI

50

315

D

E

F

B A

Insulator

Insulator


Position A B

Dimension

φ

38.1

φ

31.75

C

φ

28.58

D

φ

25.4

E

φ

22.22

F

φ

19.05

G

φ

15.88

H

φ

12.7

18

I

φ

9.52

Unit: mm

J

–


3. DDVI16

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

Wide tube

210 55

HG

F F

145

F

F

G

H

F

F

GH J

H

Narrow tube

185 50

135

H

J

H

H H

J

Insulator Insulator

4. DDVI68

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

FED

C C

Insulator

Wide tube

300 112 55

C

C DEF

C

F

GH

230

C

F

D

E

F

G

H

JIH

G G

Insulator

Narrow tube

145

210

G

H

I

J

72

G

G HI J

G


Position

Dimension

A

–

B

–

C

φ

28.58

D

φ

25.4

E

φ

22.22

F

φ

19.05

G

φ

15.88

H

φ

12.7

I

φ

9.52

Unit: mm

J

φ

6.35

5. DDVI135

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

Wide tube

H

G

F

F E D C C A B

F

E

D

C

C

A

B

B

B B

90

Narrow tube

I

H

G

J

G

F

E

B A C C D E F

J I H

G G F E

340

105 112

E F G G

H I J

72

Insulator


Position

Dimension

A

φ

38.1

B

φ

31.75

C

φ

28.58

D

φ

25.4

E

φ

22.22

19

F

φ

19.05

Insulator

G

φ

15.88

H

φ

12.7

I

φ

9.52

Unit: mm

J

φ

6.35


1-14. Optional Ball Valve Kits

Table 1-26

Valve connecting tube size (mm) Indoor unit where used

Model No.

BV-RXP335AG

BV-RXP280AG

Wide tube Narrow tube Balance valve

Outdoor unit where used Total capacity of indoor units after the valve

25.4

22.22

12.7

9.52

–

–

12 hp

10 hp

More than 30.0 kW and less than 42.0 kW

Less than 30.0 kW

BV-RXP224AG 19.05

BV-RXP160AG 15.88

BV-RXP56AG 12.7

BV-RP3G –

9.52

9.52

6.35

–

–

–

–

9.52

6, 8 hp

–

–

For balance tube

22.4 kW or less

16.0 kW or less

5.6 kW or less

– hp: horse power

NOTE

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

Dimensions

Type with flare nut at each end

A

Figure

E

D

Dimensions

Size

ø6.35 (1/4")

ø9.52 (3/8")

ø12.7 (1/2")

ø15.88 (5/8")

A

72

76

89

108

B

42

42

42

51

C

54

54

58

68

D

Unit: mm

E

16

16

20

22

44

44

51

56

Insulator

(divided in 2)

2 -

ø 7

Type that is welded at each end

A

Service port

30˚

E

D

ø19.05 (3/4")

ø22.22 (7/8")

250

250

51

51

68

68

22

22

56

56

Insulator

(divided in 2)

2 -

ø 7

Type that is welded at each end

A

Service port

30˚

E

D

ø25.4 (1") 250 55 69 36 84.5

Insulator

(divided in 2)

2 -

ø 7

Service port

30˚

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

20


Ball Valve Installation (for refrigerant R410A only)

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

Model name

BV-RXP56AG

BV-RXP160AG

BV-RXP224AG

BV-RXP280AG

BV-RXP335AG

Size

φ

6.35 •

φ

12.7

φ

9.52 •

φ

15.88

φ

9.52 •

φ

19.05

φ

9.52 •

φ

22.22

φ

12.7 •

φ

25.4

Valves with

φ

19.05,

φ

22.22, or

φ

25.4 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.

Outdoor unit extension

Ball valve

CAUTION

This ball valve is for use only in systems that utilize refrigerant R410A. The service port connection size is

φ

7.94. The face-to-face distance between the

φ

12.7 or

φ

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.

Service port

Indoor unit

Outdoor unit

Service port

Ball valve

Indoor unit extension

Indoor

Outdoor

2. Flare nut tightening, welding plug

The flare nut on the service port side is fully tightened. 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.

Fully tightened (this side only)

Service port

Plug

(this side only)

Service port

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

21


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.

Valve opened

Spindle

Valve closed

Spindle

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.

Insulator

Notch

22


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).

Outdoor unit

Distribution joint

Main tube

Distribution tube

Ball valve (for extension)

Main tube

Required additional refrigerant charge (kg)

Distribution tube


Less than 40 cm

Indoor unit for extension

Indoor unit for extension

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.

Outdoor unit for extension

Ball valve (for service)


Balance tube

Wide tube

Narrow tube

Main tube of distribution joint

To indoor unit

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.

NOTE

• 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).

23


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.

Required additional refrigerant charge (kg)

= [366

×

(a) + 259

×

(b) + 185

×

(c) + 128

×

(d) + 56

×

(e) + 26

×

(f)]

×

10

–3

(a) : Narrow tubing Total length of

φ

22.22 (m)

(b) : Narrow tubing Total length of

φ

19.05 (m)

(c) : Narrow tubing Total length of

φ

15.88 (m)

(d) : Narrow tubing Total length of

φ

12.7 (m)

(e) : Narrow tubing Total length of

φ

9.52 (m)

(f) : Narrow tubing Total length of

φ

6.35 (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.

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.

Example:

Outdoor unit

08 model

10 model

Main unit

10 model

C B A

LE LF

LO LA

1

LB

2

LC

3

LD

4 5 6 7

106 model 106 model 140 model 140 model 140 model 73 model 140 model

● Example of each tubing length

Main tubing

LO = 2 m

LA = 40 m

LB = 5 m

LC = 5 m

LD = 15 m

LE = 10 m

LF = 10 m

Distribution joint tubing

Outdoor side

A = 1.5 m

B = 1.5 m

C = 2 m

24

Indoor side

1 = 30 m

2 = 5 m

3 = 5 m

4 = 5 m

5 = 2 m

6 = 6 m

7 = 5 m


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

Main tubing

LO =

φ

15.88 m (Total capacity of outdoor unit is 50.4 kW)

LA =

φ

19.05 m (Total capacity of indoor unit is 88.4 kW)

LB =

φ


LC =

φ


LD =

φ


LE =

φ


LF =

φ


Distribution joint tubing

Outdoor side A:

φ

9.52

Indoor side 1:

φ

9.52

5:

φ

9.52

B:

2:

6:

φ

φ

φ

9.52

9.52

9.52

C:

3:

7:

φ

φ

φ

The longest tubing length in this example

(LM = 40 + 5 = 45 m)

9.52 (from outdoor unit connection tubing)

9.52 4:

φ

9.52

9.52 (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.

φ

19.05

→

LA + LB

φ

15.88

→

LO + LC + LD

: 45m

×

0.259 kg/m = 11.655

: 22 m

×

0.185 kg/m = 4.07

φ

12.7

→

LE : 10 m

×

0.128 kg/m = 1.28

φ

9.52

→

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.

CAUTION

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

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 m 3

× ceiling height 2.7 m = room volume 40.5

m 3 ), the graph at right shows that the minimum room volume should be 70.3 m 3 (floor area 26 m 2 ) for refrigerant of 21.093 kg. Accordingly, openings such as louvers are required for this room.

<Determination by calculation>

Overall refrigerant charge amount for the air conditioner: kg

(Minimum room volume for indoor unit: m 3 )

=

21.093 (kg)

40.5 (m 3 )

= 0.52 (kg/m 3 ) ≥ 0.3 (kg/m 3 )

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

75

70

65

60

55

50

45

40

35

30

25

20

15 m

2

100

95

90

85

80 m

3

270.0

256.5

243.0

229.5

216.0

202.5

189.0

175.5

162.0

148.5

135.0

121.5

108.0

94.5

81.0

67.5

54.0

40.5

Range below the density limit of

0.3 kg/m 3

(Countermeasures not needed)

Range above the density limit of

0.3 kg/m 3

(Countermeasures needed)

20 30 40 50 60 70 80 kg

Total amount of refrigerant

25


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 furniture.

● locations where high-frequency emissions are generated.

DO:

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

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

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

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

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

NOTE

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).

Floor-Standing, Concealed Floor-Standing Type min.

10 cm min.

10 cm min. 100 cm min. 100 cm

Wall min. 25 cm

Front view min. 25 cm

NOTE

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

Air discharge

1m

Ceiling-Mounted Type

Ceiling min. 50 cm

Side view

Fig. 2-1

Max. 25 cm

Obstacle

Concealed-Duct Type

1m

Fig. 2-2

1-Way Semi-Concealed & Slim Type

Semi-Concealed Type Semi-Concealed Slim Type

Ceiling min. 5 cm

Wall

100 cm

Obstacle

Air discharge Air intake min. 5 cm

Side view

Wall

20 cm

Fig. 2-3

Wall-Mounted Type

100

cm

20 cm

20 cm min.

15 cm

1m

Air intake

1m

1m min.15 cm min.

15 cm

Horizontal view

Fig. 2-4

Vertical view

Front View

Fig. 2-5

26


2-2. Outdoor Unit

Exhaust fan

AVOID:

● heat sources, exhaust fans, etc.

● damp, humid or uneven locations

● indoors (no-ventilation location)

Hot air

Heat source

Outdoor unit

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.

Fig. 2-6

Example of installation of 2 units

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.

More than

50 cm

More than 50 cm

More than 60 cm

More than

50 cm

Fig. 2-7

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.

Multiple Installation Example

925

90

925

(3928)

90

925

90

925

Installation anchor hole pitch

2 in 1 row

Min.

0.6 m

Min.

0.6 m

3 in 1 row

Min.

0.9 m

Min.

0.9 m

4 in 1 row

Min.

1.0 m

Min.

1.0 m

Min.

0.6 m

Min.

0.6 m

2 in 2 rows

Min.

0.9 m

Min.

0.9 m

Min.

0.9 m

3 in 2 rows

Min.

1.3 m

Min.

1.0 m

4 in 2 rows

Min.

1.0 m

Min.

1.3 m

0.6 m 0.6 m 0.6 m

Min.

0.9 m

Min.

1.3 m

Min.

0.9 m

Min.

0.9 m

2 in 3 rows

Min.

1.1 m

Min.

1.3 m

Min.

1.3 m

3 in 3 rows

Min.

1.4 m

Min.

1.3 m

4 in 3 rows

Min.

1.3 m

Min.

1.3 m

Min.

1.6 m

0.6 m 0.6 m 0.6 m

Min.

1.1 m

Min.

1.1 m

0.6 m

Min.

1.1 m

Min.

1.4 m

Min.

1.4 m

0.6 m

Min.

1.4 m

Min.

1.6 m

Min.

1.6 m

0.6 m

Min.

1.6 m

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.

Fig. 2-8

27


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, causing 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.

Fig. 2-9

AVOID

Without snowproof vents

(Low platform)

Fallen snow

With snowproof vents

(High platform)

Fig. 2-10

28

Fig. 2-11


2-6. Dimensions of Wind Ducting

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

08 / 10 / 12 unit

Air direction: Front direction example

06 unit

Unit: mm

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


Unit: mm


29


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

08 / 10 / 12 unit

Unit: mm

06 unit

Unit: mm

30


2-7. Dimensions of Snow Ducting

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

08 / 10 / 12 unit


06 unit

Unit: mm



Unit: mm


31


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

1

2

3

4

Part name

Air direction chamber

Air intake duct

Air intake duct (front)

Spacer

Model No.

STK-DR280A

STK-BDR280A

STK-BDR280AF

STK-BDR

Q'ty

4

6

4

3 (with 6 separate parts)

32

Unit: mm


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

(2) Depending on the ceiling type:

● Insert suspension bolts as shown in Fig. 3-3 or

● Use existing ceiling supports or construct a suitable support as shown in Fig. 3-4.

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)

780 (Ceiling opening dimension)

652 (Suspension bolt pitch)

74

Unit: mm

AS1S

15

74

268

560

Fig. 3-1

4 – 12

×

37 oblong holes

Drain outlet

Unit: mm

15

Suspension lug

Power wiring outlet

115 40 100

Drain inspection port

Flared refrigerant connection outlet (narrow tube)

Flared refrigerant connection outlet (wide tube)

Fig. 3-2

Hole-in-anchor

Hole-in-plug Concrete Insert

Suspension bolt (M10 or 3/8")

(field supply)

Fig. 3-3

Ceiling tiles

Ceiling support

Fig. 3-4

33


AS1S

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 A in Fig. 3-5.

CAUTION

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

3-2. Placing the Unit Inside the Ceiling

(1) When placing the unit inside the ceiling, determine the pitch of the suspension bolts.

Tubing must be laid and connected inside the ceiling when suspending the unit. If the ceiling is already constructed, lay the tubing into position for connection to the unit before placing the unit inside the ceiling.

(2) Thread the 3 hexagonal nuts and 2 washers (field supply) onto each of the the 4 suspension bolts as shown in Fig. 3-6. Use 1 nut and 1 washer for the upper side, and 2 nuts and 1 washer for the lower side, so that the unit will not fall off the suspension lugs.

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

177 Unit: mm

For fresh air intake

(ø125 hole) A

Fig. 3-5

Nuts and washers

Double nuts

Upper

Lower

Suspension bolt

Suspension lug

Fig. 3-6

20

74

Suspension bolts

Tubing side

74

20

Suspension bolts

Fig. 3-7

Unit: mm

Fig. 3-8

Ceiling material

Unit: mm

34


(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)

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.

● 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°.)

(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)

NOTE

Make sure the drain pipe has a downward gradient

(1/100 or more) and that there are no water traps.

70

Bead

Fig. 3-9

5

15

Unit: mm

Installation gauge

Packing (supplied)

PVC adhesive

Fig. 3-10

Vinyl clamps

Fig. 3-11

37

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) Drain hose

(supplied)

Hard PVC socket VP-25

(not supplied)

Hard PVC pipe

VP-25

(not supplied)

Drain insulator (supplied)

AS1S

35


CAUTION

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.

Air bleeder

Fig. 3-12

30 cm or less (as short as possible)

50 cm or less

Fig. 3-13

Upward gradient prohibited

Fig. 3-14

Support pieces

Fig. 3-15

36


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.

CAUTION

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

(4) When the drainage check is complete, open the check pin (CHK) and remount the insulator.

CAUTION

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.

Siphon pump

Fig. 3-16

Drain pan

AS1S

37


ASBS

■ 1-Way Air Discharge Semi-Concealed Slim

Type (ASBS Type)

Front face


(1) Place the full-scale diagram (supplied) on the ceiling 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.

Rear

Full-scale diagram

Fig. 3-17

NOTE

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

Table 3-1

73

Length

Type

28, 36, 56

A

1,193

1,390

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)

52

A (Ceiling opening dimension)

B (Suspension bolt pitch)

Drain hose

Refrigerant tube

Unit: mm

B

1,089

1,286

52

Air discharge side

Fig. 3-18

221

Refrigerant tubing joint

(narrow tube side)

40

Refrigerant tubing joint

(wide tube side)

Suspension lug

157

Drain connection port

28

Unit: mm

(52)

Unit: mm

Air-discharge side


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

or


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.

(4) Cut the ceiling material, if necessary.

(Figs. 3-18 and 3-19)

38

Fig. 3-19

Hole-in-anchor



(field supply)

Fig. 3-20

Fig. 3-21

Ceiling tiles

Ceiling support


(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.

A


(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)



(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.

Suspension lug

635 88

Unit: mm

Fresh air intake knock-out hole

ø125

Fig. 3-22

Power supply inlet

ASBS

Suspension bolt

Suspension lug

Nuts and washers

Double nuts

Upper

Lower

Fig. 3-23


30 to 40 mm

Fig. 3-24

30 to 40 mm

Drain pipe side Poured water

Vinyl hose

Fig. 3-25

0 to 5 mm

39



(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. 3-26a)

ASBS

CAUTION



● Tighten the hose clamps so their locking nuts face upward. (Fig. 3-26a)


(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)

NOTE






(supplied)


(not supplied)

Hard PVC pipe

VP-25

(not supplied)

Bead Packing (supplied)

PVC adhesive

Fig. 3-26a


Vinyl clamps

Fig. 3-26b

40


CAUTION

● Do not install an air bleeder as this may cause water to spray from the drain pipe outlet.

(Fig. 3-27)

● If it is necessary to increase the height of the drain pipe, the pipe can be raised a maximum of 59 cm from the bottom of the ceiling. Do not raise it any higher than 59 cm, as this could result in water leaks. (Fig. 3-28)

● Do not install the pipe with an upward gradient from the connection port. This will cause the drain water to flow backward and leak when the unit is not operating. (Fig. 3-29)

● Do not apply force to the piping on the unit side when connecting the drain pipe. The pipe should not be allowed to hang unsupported from its connection to the unit. Fasten the pipe to a wall, frame, or other support as close to the unit as possible.

(Fig. 3-30)

● Provide insulation for any pipes that are run indoors.




(2) Short the check pin (CHK) on the indoor control board and operate the drain pump.

CAUTION


(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.

Air bleeder prohibited

Fig. 3-27

30 cm or less

(as short as possible)

59 cm or less

Fig. 3-28


Fig. 3-29

ASBS

Siphon pump

Support pieces

Fig. 3-30

Fig. 3-31

41


ASBS

(4) When the check of drainage is complete, open the check pin (CHK) and remount the insulator.

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.

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.

CAUTION

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

(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

Fig. 3-32

Sub drain pan

Tab (second stage)

Tab (first stage)

Tab of both sides

Fig. 3-33 b a

Side panel

42



(AS2S Type)


(1) Follow the diagrams to make the holes in the ceiling.

Table 3-2

A

22, 28, 36, 56 1,020

73

B

920

C

840

1,320 1,220 1,140

D

400

Unit: mm

E

440

550 590




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.


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

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

40

70

Center of panel and ceiling opening

D E

C

Suspension bolt pitch B

Ceiling opening dimension A

Fig. 3-34

30

600

110

70

30

Unit: mm

AS2S

Unit: mm

Drain outlet

Refrigerant connection outlet

(wide tube)

Refrigerant connection outlet (narrow tube)

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

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

Fig. 3-35

Hole-in-anchor



(field supply)

Fig. 3-36

Ceiling tiles

Ceiling support

Fig. 3-37

43


(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.

A

CAUTION

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

AS2S


(1) When placing the unit inside the ceiling, determine the pitch of the suspension bolts.



(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.


(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)

A

ø

162

ø150

ø138

Fig. 3-38

Fig. 3-39

Nuts and washers

Double nuts

Upper

Lower

Suspension bolt

Suspension lug

Fig. 3-40

Unit: mm

CAUTION



● Tighten the hose clamps so their locking nuts face upward. (Fig. 3-41)





(supplied)


(not supplied)

Hard PVC pipe

VP-25

(not supplied)


PVC adhesive

Fig. 3-41

44


(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)

NOTE



CAUTION

● Do not install an air bleeder as this may cause water to spray from the drain pipe outlet.

(Fig. 3-43)


● 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)


● Provide insulation for any pipes that are installed indoors.


Vinyl clamps

Fig. 3-42


Fig. 3-43


50 cm or less

Fig. 3-44


Fig. 3-45

AS2S

Support pieces

Fig. 3-46

45


AS2S




(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.

CAUTION


(4) When the check of drainage is complete, open the check pin (CHK) and remount the tube cover.

(Fig. 3-47)

CAUTION

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.

Drainage check section

(transparent drain port) Inspection cover

Water for checking drainage

(Approx. 1,200 cc)

Fig. 3-47

46



(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.


(1) Fix the suspension bolts securely in the ceiling using the method shown in the diagrams (Figs. 3-

48 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

Length

Type

28, 36, 56,

73, 106, 140

A B

788 723

C

Unit: mm

D

885 885

(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

Length

Type

28, 36, 56, 73

106, 140

A B

113 173

113 173

C

256

319

D

210

210

Unit: mm

E

88

88

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

Cassette, see page 139.

Hole-in-anchor



(field supply)

Fig. 3-48

A (suspension bolt pitch)

C (ceiling opening dimension)

Fig. 3-49

ASS

Drain outlet (other side)

(VP25)

Refrigerant tubing joint (narrow side) Refrigerant tubing joint (wide side)

Suspension lug

Fig. 3-50

47


ASS


(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 appropriate 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 protect the fan parts during transport.

Supplied bolt

Nuts and washers

(use for upper and lower)


(printed on top of container box)

Fig. 3-51

Suspension bolt

Suspension lug

Notch

Double nut

12 – 17 (mm)

Fig. 3-52

48



(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)

CAUTION

● 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 supplied 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)

CAUTION

Tighten the hose clamps so their locking nuts face upward. (Fig. 3-53)

NOTE



CAUTION

● Do not install an air bleeder as this may cause water to spray from the drain pipe outlet. (Fig. 3-55)

Connection pipe

(drain port)

Hose band

Supplied drain hose

Hard PVC socket

VP-25

(Field supply)

Hard PVC pipe

VP-25

(Field supply)

Align the hose band with the end of the pipe

Bead

Fig. 3-53

Vinyl clamps

Fig. 3-54

Packing

(supplied)

PVC adhesive



Fig. 3-55

ASS

49


ASS

CAUTION


● 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)


● Provide insulation for any pipes that are run indoors.




(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.

Drainage check

Over 100 mm


64 cm or less

Fig. 3-56


Fig. 3-57

Support pieces

Fig. 3-58

CAUTION


50

Plastic container for water intake

Drain pan outlet

Water (Approx. 1,200 cc)

Fig. 3-59

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

■ 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.

NOTE

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)

CAUTION

Avoid areas where electrical wiring or conduits are located.

(6) Place the plastic cover over the end of the pipe (for indoor side only) and insert in the wall. (Fig. 3-65)

NOTE

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

Plastic cover

INSIDE

Wall

OUTSIDE

PVC pipe

Slight angle

Fig. 3-65

Screws used during transportation

Press

Remove the rear panel

Fig. 3-60

Left-rear tubing

Left tubing

Right-rear tubing

(recommended)

Fig. 3-61

Center of left rear tubing hole

Tubing hole diameter

φ

80

Center of right rear tubing hole

Fig. 3-62

Indoor side

Fig. 3-63

Cut at slight angle

Fig. 3-64

Outdoor side

PVC pipe (locally purchased)

Right tubing

AWS

51


AWS

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.

52

Fig. 3-66

Fig. 3-67

Filter

Flap

Open the grille

Fig. 3-69

4.8 mm dia. hole

Rawl plug

Fig. 3-68

Installation screw cover

Fig. 3-70

Intake grille

Remove the grille

Fig. 3-71


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 refrigerant 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.

Frame

Right tubing outlet

When left and right side tubing

Fig. 3-72

Installation tabs

Press

Installation tabs

Fig. 3-73

Fig. 3-74

Clamp

Rear panel tab

Fig. 3-75

Insulating tape

Refrigerant tubing

Plastic cover

Fig. 3-76

Indoor and outdoor unit connection wiring

53

AWS


Left or left-rear tubing

(1) Pass the tubing and drain hose into the rear of the indoor unit. Provide sufficient length for the connections to be made.

Next, bend the tubing with a pipe bender, and connect them.

(2) After performing a leak test, wrap the refrigerant tubing and drain hose together with insulating tape, as shown in the figure at right.

Then fit the tubing into the tubing storage space in the rear of the indoor unit and clamp in place.

(3) Adjust the indoor unit so that it is securely installed onto the rear panel.

AWS

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 recommended.

WARNING

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

Insulation

Fig. 3-77

Insulating tape

Refrigerant tubing

Rear panel

Inter-unit wiring

Drain hose

Fig. 3-78

Indoor unit

Slant

Refrigerant tubing

Fig. 3-79

54


■ Ceiling Mounted Type (ACS Type)

3-25. Required Minimum Space for Installation and Service

(1) Dimensions of suspension bolt pitch and unit

Type

Length

A B C

36, 56 855 910 210

B

73

106, 140

1125

1540

1180

1595

210

210

Ceiling side

C

Air intake

Unit: mm

27.5

A

(Suspension bolt pitch)

Fig. 3-80

(2) Refrigerant tubing • drain hose position

Rear (Figure shows view from front)

Left side

75 97

27.5

Air

Right side 216

(Narrow tubing •

Wide tubing)

Narrow tubing

Wide tubing

251 84

Left drain position

Closed with rubber stopper at time of shipment.

Right drain position

146

251

161

Unit: mm

Fig. 3-81

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

Left-side drain hose outlet port 123 Top outlet port

216

110 76

Right-side drain hose outlet port

*1

*1

Side panel

*3

Remote controller wiring inlet port

(

φ

30, knock-out)

*3


(

φ

30, rubber grommet on right side only)

Power inlet port

(

φ

40, knock-out)

Knock-out

*2 Side panel Position of plate inside side panel

84

Rear outlet port

Outside air intake duct connection port

(

φ

100, knock-out)

Power inlet port

(

φ

40, knock-out)

Rear tubing hole

Left-side drain hose outlet port

Fig. 3-82

262

125 72

347

Unit: mm

* 1 Use a compass saw, jig saw or similar 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.

55

ACS


(4) Wall and ceiling side opening position

Figure shows view from front Figure shows view from top

ACS

Ceiling Wall *

90

φ

100 wall side opening

φ

100 wall side opening

(for left-side drain hose)

135

φ

100 ceiling opening

φ

100 ceiling opening

125 Unit: mm

* If the optional drain up kit is installed, create a

φ

100 hole along the dotted line (part marked with * in figure).

Fig. 3-83


(1) Place the full-scale diagram (supplied) on the ceiling at the spot where you want to install the indoor unit. Use a pencil to mark the drill holes.

(Fig. 3-84).


Ceiling

Wall

Fig. 3-84

NOTE

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 fullscale diagram.

(3) Depending on the ceiling type: a) Insert suspension bolts as shown in Fig. 3-85.

or b) Use existing ceiling supports or construct a suitable support as shown in Fig. 3-86.

Hole-in-anchor

Hole-in-plug Concrete


(field supply)

Fig. 3-85

Insert

Ceiling tiles

Ceiling support

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.

A

A

Fig. 3-86

(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) unit

Ceiling surface

Fixture

Fig. 3-87

56


(5) Before suspending the indoor unit, remove the 2 or 3 screws on the latch of the air-intake grilles, open the grilles, and remove them by pushing the claws of the hinges as shown in Fig. 3-88a. Then remove both side panels sliding them along the unit toward the front after removing the 2 attachment screws. (Fig. 3-88b)

(6) Carry out the preparation for suspending the indoor unit. The suspension method varies depending on whether there is a suspended ceiling or not. (Figs. 3-89a and 3-89b)

(7) Suspend the indoor unit as follows: a) Mount 1 washer and 2 hexagonal nuts on each suspension bolt as shown in Fig. 3-89c.

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

Screw

Latch

Slide

Air-intake grille

Fig. 3-88a

Slide toward front side

Hinge

57

Side panel

Fig. 3-88b

Suspension bolt

(field supply)

Unit

Fixture

Fig. 3-89a

Ceiling surface

Washer (supplied)

Double nut

(field supply)

Suspension bolt

(field supply)

Washer (field supply)

Unit

Fig. 3-89b

Washer (supplied)

Double nut

(field supply)

ACS

Washer

(supplied)

Ceiling surface

Nut

(field supply)

Suspension bolt

Fig. 3-89c


ACS 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 suspension bolt to suspend the indoor unit as shown in

Fig. 3-91.

NOTE

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)

Fig. 3-90

Fig. 3-91

NOTE

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

Indoor side

Outdoor side

Fig. 3-92

PVC pipe (locally purchased)

INSIDE

Wall

OUTSIDE

PVC pipe

Slight angle

Cut at slight angle

Fig. 3-93

58


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.


(

φ

30, rubber grommet on right side only)

Rear outlet port

Outside air intake duct connection port

(

φ

100, knock-out)

Power inlet port

(

φ

40, knock-out)

Rear tubing hole

Left-side drain hose outlet port

Fig. 3-94a

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.

ACS

Rear cover

Fig. 3-94c

Fig. 3-94b


● Prepare standard PVC pipe for the drain and connect 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.

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.

59


ACS

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

● Connect the drain piping so that it slopes downward 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 dripping.

● 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.)

Drain port

* If the drain hose is routed through the left side, refer

Screwdriver to Fig. 3-94b on page 58, and follow the procedure

Rubber stopper 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.

CAUTION

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

Twist tie

(4 ties, supplied)

Drain hose

Unit drain port insulation

(supplied)

Hard PVC pipe

(equivalent to

VP-20)

(Field supply)

Position to fasten hose bands

5

25

140

Unit drain pan

Good

Not good

Fig. 3-95

5

25

Min. 1/100

Drain hose

(supplied)

Hose band

(2 bands, supplied)

Unit: mm

Fig. 3-96

60


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)

CAUTION

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

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


* 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.

Clamp

Power, inter-unit wiring

Fig. 3-97

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

ACS

61


ADS

■ 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 Unit: mm

Type 22, 28, 36, 56 73 106, 140

A (Length)

Number of duct flanges

780

2

1,080

3

1,560

4

Table 3-6

Dimension

Type

22, 28, 36, 56

73

106, 140

A B C D E

662

962

1,442

600

(200

×

3)

900

(180

×

5)

700 780 290

1,000 1,080 290

1,380

(230

×

6)

1,480 1,560 335

F min. 250

A (Suspension bolt pitch)

Indoor unit

Air outlet duct flange

G H I J

Fig. 3-98

K

262 680 715 180 – 340

272 980 1,015 130

310 1,460 1,495 130

245

(245

×

1)

490

(245

×

2)

250

240

12

16

Electrical component box

Inspection access

450 450

Refrigerant tubing min. 650

Unit: mm

No. of holes

L M

8 12

16

18

Unit: mm

90

10

19

I

L-ø6

(Hole)

J K

A (O.D.)

J

H (Duct suspension bolt pitch)

G (Ceiling opening dimension)

31

B

I

10

19

11

4-ø12

(Hole)

9

10

11

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


Flange for the air intake duct

(Option or field supply)

31

M-ø3.3

(Hole)

25

310

210 25

175

10

9

Inspection access

(450

×

450)

(Field supply)

E

C

D


E E F

40

(150)

75

65

35

70 130

285

Inspection access panel

Ceiling

Unit: mm

Fig. 3-99

62



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.

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.


(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)


(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.

Hole-in-anchor

Hole-in-plug

Nuts and washers

(use for upper and lower)

Concrete Insert


(field supply)

Fig. 3-100

Fig. 3-101

Ceiling tiles

Ceiling support

Suspension bolt

Suspension lug

Notch

Double nuts

Fig. 3-102

ADS

Suspension bolt

Hexagonal nut

Double nuts

Fig. 3-103

63


● Fig. 3-104 shows an example of installation.

Air outlet duct

Bolt anchor

Suspension bolt

Air-intake duct

Air-outlet grille

Ceiling material Indoor unit

Air-intake grille

ADS

Fig. 3-104


(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)




(supplied)


(not supplied)

Hard PVC pipe

VP-25

(not supplied)


PVC adhesive

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)

NOTE



Vinyl clamps

Fig. 3-105b

64


CAUTION

● Do not install an air bleeder as this may cause water to spray from the drain pipe outlet. (Fig. 3-106)


● 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 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. 3-109)




(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.

CAUTION


(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.

Air bleeder

Prohibited

Fig. 3-106

Good

30 cm or less

50 cm or less

Prohibited

Fig. 3-107

Upward gradient

Fig. 3-108

Support pieces

Fig. 3-109

ADS

65

Water intake

Fig. 3-110


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.

Indoor Fan Performance

Fan motor


Booster cable

Booster cable

Fan motor socket

(At shipment)

Fig. 3-111

(Booster cable installed)

150

22, 28, 36 Type

15 150

56 Type

15

100 10

Limit line

HT

Limit line

50 5

H

M

L

0

5 10

Air Flow (m 3 /minute)

0

100

Lim it line

50

0

10

Limit line

5

H

HT

M

L

10


15

0

73 Type 106 Type 140 Type

ADS 150 15 150

Limit line

15 150

Limit line

15

100

Limit line

10

HT

Limit line

50

H

5

M

L

0

10 20


0

100

HT

10

Limit line

H

50

M

L

0

20 30


5

0

100

Li mit line

HT

10

H

50 5

M

L

0

20 30


40

0

NOTE HT : Using booster cable

H : At shipment

Fig. 3-112

■ How to read the diagram

The vertical axis is the external static pressure (Pa) while the horizontal axis represents the air flow (m 3 /minute).

The characteristic curves for “HT,” “H,” “M” and “L” fan speed control are shown. The nameplate values are shown based on the “H” air flow. For the 73 type, the air flow is 18 m 3 /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.

66


■ Concealed-Duct High Static Pressure Type

(ADPS Type)

3-35. Required Minimum Space for Installation and Service (73, 106, 140 Type)


● The minimum space for installation and service is shown in Fig. 3-113a.

● It is recommended that space be provided (600

×


● Fig. 3-113b and Table 3-7 show the detailed dimensions of the indoor unit.

980

Suspension bolt pitch

940

Inspection access

(600

×

600)

130

500

290

Suspension bolt pitch

(mm)

Min. 600

(Space for service)

Air suction side

Refrigerant tubing


Min. 600

Space for service

Drain pan

Ceiling face

Fig. 3-113a

Min. 130

Min.

(73 Type)

550

Min.

(106, 140 Type)

580 or

Unit: mm

940

793

7

×

100=700

22 - ø3.2

(Hole for full circumference)

55

40

48

20

90

60

Unit: mm

10

620

500 70

10


15

35

46

16 - ø3.2

(Hole for full circumference)

4

×

100=400

500

980 (Suspension bolt pitch) 15

4-ø20 hole for suspension bolt

Table 3-7

Length

Type

73, 106

140

A

Unit: mm

B C

420 395 68

450 425 98

1010

940 35

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

ADPS

Fig. 3-113b

67

Drain pan


3-36. Required Minimum Space for Installation and Service (224, 280 Type)


● The minimum space for installation and service is shown in Fig. 3-114a.

● It is recommended that space be provided (600

×


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

Min. 600

(Space for service)

1170


1100

(mm)

Air suction side

Min. 700

(Space for service)

Refrigerant tubing

Inspection access

×


Min. 610

Min. 130 Drain port

Drain pan

Ceiling face

Unit: mm

Fig. 3-114a

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

ADPS

23 178

479

300

100 10050

41

2

106

44

1310

1070

10

×

100P=1000

28-ø3.5 (Holes all around)

100 100 60

320 43

67

26-ø3.5 (Holes all around)

9

×

100P=900

964

1200 (Suspension bolt pitch) 67

4 - 37

×

12

(Hole for suspension bolt)

1310

42 364 (236)

1334

1428

364

Fig. 3-114b

68

Unit: mm



Depending on the ceiling type:



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.

Hole-in-anchor



(field supply)

Fig. 3-115

Ceiling tiles

Ceiling support

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

Fig. 3-116

Hexagonal nuts and washers

(2 sets)

Fig. 3-117a

Suspension bolt

■ 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).

Supplied strainer assembly

Wide tube ø15.58

Wide tube ø15.88

Suspension hook

Indoor Unit Side

CAUTION

Outdoor Unit Side

● Connect two RAP valve kits in parallel for 224 or

280 type.

Narrow tube ø9.52

● Secure the R.A.P. valve kit using suspension bolts, etc. within 30 meters from the indoor unit.

6P connector (5 m)

354

Service cover

Narrow tube ø9.52

Supplied strainer assembly

159.5

319 372

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

ADPS

Valve body

69

80 80

1045

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

Fig. 3-117b


ADPS

3-38. Installing the Refrigerant Tubing

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

Table 3-8

224 Type

Wide tube (mm)

Narrow tube (mm)

φ

19.05 (Brazing connection)

φ

9.52 (Flare connection)

● 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 narrow 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.)

280 Type

φ

22.22 (Brazing connection)

φ

9.52 (Flare connection)

Wide tubing

Thermistor (inside unit)

@’ @

@ˆÓ

@

@ @

@ @

@ @

@ @

@ @ [•ª‚É— —n Ú

‚Ì”M‚©

”G‚ê‚

Æ‚

‚ß A

ƒEƒFƒ

X‚Å

‚¢ B

Dampened shopcloths

Fig. 3-118

ƒT [ƒ ~ƒXƒ

iƒ†ƒjƒ bƒg“à •” j

”G‚ê‚

ƒEƒF

ƒX

4759

01

70


Air-outlet grille

Air-intake grille

Fig. 3-119


(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 threaded 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, prepare traps with an inspection plug to clean dust or debris that may cause leaking of water. (Fig. 3-

120c)

(6) After connecting the drain piping, slowly pour water into the drain pan to check that the water drains smoothly.

Drain pan

Drain opening

(25A male screw)

Fig. 3-120a

Good

Not good

Fig. 3-120b

Sealing tape

Drain joint

(supplied)

Min. 1/100

ADPS

71

Inspection plug

Fig. 3-120c

Min. 50 mm


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.

ADPS


How to Read the Diagram

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

(m 3 /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 m 3 /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.

73 Type 106 Type 140 Type

250

25

250

25

200

Limit line

L

M

H

150

20

15

200

Limit line

150 L

M

H

20

15

250

200

Limit line

150

L

M

H

H

M

H

100 10 100 10

50 Limit line

5

0

20 25


30

0

50

0

Limit line

M

5

25 30


35

0

25

20

15

100 10

50

0

Limit line

H,M

5

0

30 35


40

NOTE H : At shipment

Fig. 3-121

72


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

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 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.

Fan motor


Booster cable

Booster cable

Fan motor socket

(At shipment)

Fig. 3-122a

(Booster cable installed)


224 Type 280 Type

250 25 250

Limit line

25

200

Limit line

150

L

M

H

100

H

20

15

10

50

Limit line

M

5

0

50 60


70

0

NOTE HT : Using booster cable

H : At shipment

Fig. 3-122b

73

200

150

100

50

20

15

L

M

H

HT

10

M, H, HT Limit line 5

0

60 70 80


90

0

ADPS


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.

NOTE

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)

1 4-ø12 holes (for fastening the indoor unit to the floor with screws)

2 Air filter

3

4


Refrigerant connection outlet (wide tube)

5

6

7

8

Level adjusting bolt

Drain outlet (20 A)

Power cord outlet (downward, rear)

Refrigerant tubing outlet (downward, rear)

9 Location for mounting the remote controller (remote controller is attachable in the room) min.

10 cm

Horizontal view min.

10 cm min. 100 cm

Table 3-9

Length

Type

22, 28, 36

56, 73

A

1065

1380

Fig. 3-123a

B

665

980

Vertical view min. 100 cm

C

632

947

Unit: mm

Narrow Wide tube tube

9.52

12.7

9.52

15.88

161 26 15

57

100177

230

C

B

A

Air outlet

Side panel

Refrigerant tubing space for downward tubing

156

67

76

213

25 R

615

260

36

155

54 54

Air inlet

Fig. 3-123b

74

107

Rear-tube outlet

205

Unit: mm


Concealed Floor-Standing Type (AFNS Type)

1 4-ø12 holes (for fastening the indoor unit to the floor with screws)

2

3

4

5

6

7

Air filter


Refrigerant connection outlet (wide tube)

Level adjusting bolt

Drain outlet (20A)

Flange for air-outlet duct

Table 3-10

Length A

Type

22, 28, 36

56, 73

B C D

858 692 672 665

1173 1007 1002 980

Narrow tube

9.52

9.52

Unit: mm

Wide tube

12.7

15.88

56

100

166

A

Air outlet

B

C ( Internal dimension)

46

229

155

66

125

374

616

147 260

402

539

70

Air inlet 30

AFS

30

147

205

Unit: mm

AFNS

Fig. 3-124

NOTE

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.

75


AFS

AFNS

3-44. Removing and Attaching the Front Panel

(Floor-Standing Type)

NOTE

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.

Front panel

B

Front panel

Fig. 3-125

A

Tab

Side panel

Fixture Chain

Dew-prevention

heater

Lead-wire connector

(2p Red)

Fig. 3-126

76


CAUTION

Insulate both wide and narrow tubes.

● To insulate tubes

(1) Wrap the flare nuts with the supplied white insulating tape.

(2) Wrap the flare nuts with the supplied flare insulator.

(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.

Holes for fixing the unit to the floor

167

Fig. 3-127

177

Rear-tube outlet

Refrigerant tubing space for downward tubing

Unit: mm

Insulating tape (black)

Insulating tape (white)

Flare insulator

AFS

Insulator

Flare nut

Vinyl clamps

Fig. 3-128

Insulating tape

AFNS

77


AFS


CAUTION

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

(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 gradient 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 center and route them to the lead wire guide.

(4) Secure the fixture using the supplied screws.

Drain hose

Drain pipe (PVC)

Fig. 3-129

Drain hose (supplied) Drain insulator (supplied)

Vinyl clamp

(supplied)

Hose band

(supplied)

Hard PVC pipe

VP20

(field supply)

Vinyl clamps

(supplied)

Fig. 3-130

Insulating tape

(supplied)

Drain hose insulator

(field supply)

AFNS

Lead wire guide

Remote controller

Fig. 3-131

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.

Screw

Fig. 3-132

78


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)

Fan guard

Supplied cardboard strips

Rope

70˚

CAUTION

● 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)

Table 4-1

Unit: mm

Type Master unit (DC inverter unit) Slave unit (constant speed unit)

08 12 08 12

A

B

06

783

823

10

925

965

10

925

965

Anchor bolts (more than M12)

Washer

Installation anchor bracket

Vibration insulator

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

Fig. 4-1

20

44

Fig. 4-2

64

A

B

Outdoor unit bottom plate

(Detailed view of leg)

Installation anchor hole (15* 20)

Fig. 4-3

Unit: mm

Unit: mm

(Anchor bolt positions)

Installation anchor hole (4 15* 20 hole)

AES

A

B

Fig. 4-4

Unit: mm

79


Installation examples

125 125 125

925

90

925

90

Fig. 4-5

925

90

125

925

Unit: mm

925

90

Fig. 4-6

783

Unit: mm

AES

80


5. ELECTRICAL WIRING

5-1. General Precautions on Wiring

(1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram.

(2) Provide a power outlet to be used exclusively for each unit, and a power supply disconnect and circuit breaker for overcurrent protection should be provided in the exclusive line.

(3) To prevent possible hazards from insulation failure, the unit must be grounded.

(4) Each wiring connection must be done in accordance 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 damaged, 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

AES06MI2H

AES08MI2H

AES10MI2H

AES12MI2H

AES08M2H

AES10M2H

AES12M2H

Indoor unit

(A) Power supply

Wire size Max. length

4 mm 2 113 m

6 mm

6 mm

6 mm

6 mm

6 mm

6 mm

2

2

2

2

2

2

74 m

60 m

55 m

47 m

46 m

39 m

Time delay fuse or circuit capacity

15 A

30 A

35 A

40 A

35 A

40 A

50 A or

(A) Power supply

Wire size Max. length

2.5 mm

6 mm

6 mm 2

10 mm 2

6 mm 2

10 mm

10 mm 2

2

2

2

70 m

74 m

60 m

91 m

47 m

77 m

65 m


16A

35A

35A

50A

35A

50A

50A

Type

AWS

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

ADPS (73, 106, 140)

ADPS (224/280)

(B) Power supply

2.5 mm

2


Max. 150 m

Max. 130 m

Max. 60 m

Max. 50/30 m

10 ~ 16A

10 ~ 16A

10 ~ 16A

10 ~ 16A

Control wiring

(C) Inter-unit (between outdoor and

indoor units) control wiring

0.75 mm 2 (AWG #18)

Use shielded wiring*

Max. 1,000 m

NOTE

* With ring-type wire terminal.

(D) Remote control wiring

0.75 mm 2 (AWG #18)

Use shielded wiring

Max. 500 m

(E) Control wiring for group control

0.75 mm 2 (AWG #18)


Max. 500 m (Total)

(F) Inter-outdoor unit control wiring

0.75 mm 2 (AWG #18)


Max. 500 m

81


5-3. Wiring System Diagrams

Power supply

220-240V 50Hz

L

N

Ground

Remote controller

WHT

BLK

1

2

1

2

D

Power supply

220-240V 50Hz

L

N

Ground

Remote controller

WHT

BLK

1

2

1

2

D

Group control:

Power supply

220-240V 50Hz

L

N

Ground

Power supply

220-240V 50Hz

L

N

Ground

Remote controller

WHT

BLK

1

2

1

2

D

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.

Indoor unit (No. 1)

1

2

B

U1

U2

R1

R2

B

E

B

C

Indoor unit (No. 2)

1

2

3

U1

U2

R1

R2

C

Indoor unit (No. 3)

1

2

3

U1

U2

R1

R2

C

Ground

Ground

Ground

Ground

F

Ground

C

B

Indoor unit (No. n)

1

2

3

U1

U2

R1

R2

Outdoor unit

INV unit

U1

U2

3

4

3

4

1

2

5

Inter-outdoor-unit control wiring

Outdoor unit

AD unit

3

4

3

4

5

1

2

A

A

L1

L2

L3

N

Ground

Power supply

380-415V-3N 50

L1

L2

L3

N

Ground

Power supply

380-415V-3N 50

7P terminal board

1(L)

Power supply

2(N) U1 U2

Inter-unit control wiring

R1 R2

Remote controller

AS2S, ASS, ACS Type

8P terminal board 5P terminal board

1 2 U1 U2 R1 R2

1(L)2(N) R1 R2

Power supply

U1 U2

Inter-unit

Remote controller control wiring

AS1S, ASBS, ADS,

ADPS, AFS, AFNS

4 5 1 2

1(L)2(N)

Power supply

3

4 5


AWS Type

82


CAUTION

(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

Prohibited

Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit

Fig. 5-1

(3) Do not install inter-unit control wiring such as star branch wiring. Star branch wiring causes mis-address setting.

NO

Indoor unit Outdoor unit

NO

Indoor unit

Indoor unit Indoor unit

Branch point

Fig. 5-2

Outdoor unit

Indoor unit

Indoor unit

Indoor unit

(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)

Outdoor unit Outdoor unit Outdoor unit

Indoor unit Indoor unit more than 1 m

Branch point

16 or fewer

Indoor unit more than 1 m

Indoor unit

Indoor unit less than 1 m

Indoor unit

Fig. 5-3

83




(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 terminal 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)

Ground

Shielded wire

Ground

Fig. 5-4

Stranded wire

Fig. 5-5

Special washer

Wire

Screw

Ring pressure terminal

Terminal plate

Wire

Fig. 5-6


Screw and

Special washer


84


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 controller 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 provided. 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) correctly to the corresponding terminals in the electrical component box of the indoor unit.

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.

(4) To finish, fit the back tabs of the case into the remote controller and mount it.

CAUTION

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

M4

×

25 screws (2)

Opening for switch box

Spacer

Remote controller

Decorative cover

120

Fig. 6-2

Under case

(Back case)

Fig. 6-1

Accessories for remote controller switch

No.

1

Supplied parts

Remote controller switch

(with 200 mm wire)

2

Small screws

M4

×

25

Q’ty No.

Supplied parts

Spacers

1 4

2 5

Wire joints

Q’ty

2

2

3

Wood screws

2

Diagram of outer dimensions

4

16

Unit: mm

REM

85


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.

Shielded wire

Ground

Remote control wiring

Group control

1

Terminal

3P

1

2

2

Indoor unit

No. 1

1 2

Connection wiring for group control

Standard remote control

1 2

1 2

Indoor unit

No. 2

1 2

1 2

Indoor unit

No. 3

1 2

Multiple remote control

1 2

1 2

Indoor unit

No. 8

1 2

1 2

1 2

Outdoor unit

: Ground


Fig. 6-3

Inter-unit wiring

Indoor unit 1

Indoor unit 2

Indoor unit 7

Indoor unit 8

Group-control wiring

Fig. 6-4

REM

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.

Remote controller

1 2

Terminal

3P

1 2

Indoor unit

No. 1

1 2


1 2

Outdoor unit


1 2

Indoor unit

No. 2

1 2

1 2

Indoor unit

No. 3

1 2

Remote controller

(main)

1 2

3P terminal base for remote control wiring

1 2

Indoor unit

No. 1

(sub)


1 2

1 2

Indoor unit

No. 2

1 2

Indoor unit

No. 3

: Ground (earth)

Fig. 6-5

86

(Main) (Sub)

1 2

Indoor unit

No. 8

1 2

1 2

Indoor unit

No. 8


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).

TIMER

TMNL.

To Service Technicians

To display the sensor temperature:

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.

RCU

TMNL.

RCU.Main

RCU.CK

RCU.Sub

RCU.ADR

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.

(New) (Old)

Press the button to finish service mode.

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

1 On the remote controller, press

+ + at the same time for

2 more than 4 seconds.

Set CODE No. with /

(SET TEMP) button.

Remote controller address connector

Remote Controller (Main)

Remote Controller (Sub)

WA R N I N G

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.

3 Set DATA from to with / (TIMER) button.

4

Press

Finally, Press

Fig. 6-6

NOTE

Cautions on group control

● Group control within the same refrigerant tubing system is recommended.

[Tubing system which is NOT recommended]

Tubing system 2

Outdoor units

Tubing system 1

Group address

2 1 3 2 1 3 2 1

Group 3 Group 2 Group 1

Remote controller

3 4 5 6 2 1 Indoor Units

Group 4

<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.

87

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.

NOTE

● 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.

NOTE

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

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.

NOTE

● 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.

REM

88


6-6. Wiring the Remote Controller

<Flush Mounting>

● Connection diagram

Approx.

200 mm

Terminal board for indoor unit remote controller wiring

1

2

W

BK

1

2

Remote controller unit

Remote controller wiring

(field supply)

Connector

Power wire from remote controller unit

● Use 0.5 mm 2 – 2 mm 2 wires.

(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 connection at the wire joint.

(3) If a special crimping tool is not used, or if the connection 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.

Connector

Provided wire joint

(white)

Remote controller wiring

Power wire from remote controller unit

Lead wire anchor

Wire joint

CE-1, white

Remote controller cord (optional)

REM

89


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

LED 1 LED 2

Alternating

Alarm contents

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)

Possible cause of malfunction

Serial communication errors

Mis-setting

Remote controller is detecting error signal from indoor unit.

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.

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

Indoor unit is detecting error signal from main outdoor unit.

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.”)

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

Activation of protective device

Alarm message

<E01>

<E02>

<<E03>>

E04

<E06>

Improper setting of indoor unit or remote controller.

Indoor unit address setting is duplicated.

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.”)

Remote controller address connector (RCU. ADR) is duplicated.

(Duplication of main remote controller)

Starting auto. address setting is prohibited.

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

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)

No indoor unit is connected during auto. address setting.

Indoor unit communication error of group control wiring.

Improper setting.

Main outdoor unit is detecting error signal from sub outdoor unit.

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.

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

Duplication of main indoor unit address setting in group control.

Duplication of outdoor R.C. address setting.

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

Priority set remote controller

Non-priority set remote controller

Group control wiring is connected to individual control indoor unit.

Indoor unit address is not set.

Capacity code of indoor unit is not set.

Protective device in indoor unit is activated.

Capacity code of outdoor unit is not set.

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

4-way valve operation failure

Thermal protector in indoor unit fan motor is activated.

Improper wiring connections of ceiling panel.

Float switch is activated.

E08

<<E09>>

E12

E15

E16

E20

E24

E25

E26

E29

E18

L02

<L03>

L04

L05

L06

L07

L08

<<L09>>

L10

L17

L18

<<P01>>

<<P09>>

<<P10>>

Continued

90


Possible cause of malfunction

Alarm message


Thermistor fault

Protective device in outdoor unit is activated.

Indoor thermistor is either open or damaged.

Outdoor thermistor is either open or damaged.

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)

Outdoor unit fan motor is unusual.

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

Negative (defective) N phase.

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.)

IPM trip (IPM current or temperature)

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

Indoor coil temp. sensor (E1)



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)

Compressor intake port temperature sensor (RDT)

High pressure sensor

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

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

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

Protective device for compressor is activated

Protective device for compressor

No. 1 is activated.

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

Overload current is detected.

Lock current is detected.

Current is not detected when comp. No. 1 is ON.

Discharge gas temperature of the comp. No. 1 is not detected.

Temp. sensor is not seated at the sensor holder.

Protective device for compressor

No. 2 is activated.

Overload current is detected.

Lock current is detected.

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

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

Low pressure switch is activated.

Low oil level.

Oil sensor fault.

(Disconnection, etc.)

Comp. No. 1 oil sensor

Comp. No. 2 oil sensor

P02

P03

P04

P05

P17

P22

P16

P26

H31

P29

H05

H11

H12

H13

H15

H06

H07

H08

H27

Continued

<<F01>>

<<F02>>

<<F03>>

<<F10>>

<<F11>>

F04

F05

F06

F07

F08

F12

F16

F23

F24

F29

F31

H01

H02

H03

REM

91


Alarm messages displayed on system controller

Serial communication errors

Mis-setting


Error in transmitting serial communication signal

Error in receiving serial communication signal

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.

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

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.

C05

C06

P30

NOTE

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.

REM

92


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)

NOTE

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.)

NOTE

A good flare should have the following characteristics:

●

●

● inside surface is glossy and smooth edge is smooth tapered sides are of uniform length

Before

Deburring

After

Fig. 7-1

Copper tubing

Reamer

Fig. 7-2

Flare tool

Fig. 7-3

Flare nut

Copper tubing

93


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

7-2. Connecting Tubing Between Indoor and Outdoor Units

(1) Tightly connect the indoor-side refrigerant tubing extended from the wall with the outdoor-side tubing.

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

● When removing the flare nuts from the tubing connections, 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.

Indoor unit

Apply refrigerant lubricant here and here

Fig. 7-4

Union Flare nut

Fig. 7-5

Torque wrench

Spanner

Outdoor unit

Fig. 7-6

94

Tube diameter

φ

6.35 (1/4")

φ

9.52 (3/8")

φ

12.7 (1/2")

φ

15.88 (5/8")

φ

19.05 (3/4")

Tightening torque, approximate

14 – 18 N · m

(140 – 180 kgf · cm)

34 – 42 N · m

(340 – 420 kgf · cm)

49 – 61 N · m

(490 – 610 kgf · cm)

68 – 82 N · m

(680 – 820 kgf · cm)

100 – 120 N · m

(1000 – 1200 kgf · cm)

Tube thickness

0.8 mm

0.8 mm

0.8 mm

1.0 mm

1.0 mm

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.


7-3. Insulating the Refrigerant Tubing

Tubing Insulation

● Thermal insulation must be applied to all unit tubing, 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.

CAUTION

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.

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.

CAUTION

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.

Two tubes arranged together

Narrow tubing

Insulation

Three tubes arranged together

Cosmetic

(finishing) tape

Narrow tubing

Wide tubing

Insulation

Fig. 7-7

Wide tubing

Balance tubing

Sealer (supplied)

Insulation tape (white)

(supplied)

Flare insulator (supplied)

Unit side insulator

Tube insulator

(not supplied)

Heat resistant

120

°

C or above

Flare nut

Vinyl clamps (supplied)

Fig. 7-8

Drain insulator and clamp.

Large

(supplied)

Refrigerant tubing and insulator

(not supplied)

Drain pipe and insulator

(not supplied)

Packing clamp.

Small hose band

(supplied)

Seal

Insulation tape

Vinyl

Flare insulator clamp

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

Fig. 7-9

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

95


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)

NOTE

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)

Clamp

Insulated tubes Drain hose

Fig. 7-10

Apply putty here

Tubing

Fig. 7-11

96


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 refrigerant 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.

CAUTION

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

(3) Pressurize the system to no more than 38 kgf/cm 2 G with dry nitrogen gas and close the cylinder valve when the gauge reading reaches 38 kgf/cm 2 G.

Then, test for leaks with liquid soap.

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.)

Pressure gauge

Fig. 8-2

Manifold valve

Lo Hi

Charge hose

Cylinder valve

Nitrogen gas cylinder

(In vertical standing position)

Wide tube

Narrow tube

Balance tube

Manifold gauge

Fig. 8-1

Vacuum pump

Outlet

Inlet

Open

Close

Open

Close

Open

Fig. 8-3

Close

Outdoor unit

97

AES


(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 preceding 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:

Required time for evacuation when 30 gal/h vacuum pump is used

If tubing length is less than 15 m

45 min. or more

If tubing length is longer than 15 m

90 min. or more

Pressure gauge

Manifold valve

Lo Hi

Wide tube

Narrow tube

Balance tube

Vacuum pump

Open

Close

Open

Close

Open

Fig. 8-4

Close

Outdoor unit

AES

98


NOTE

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.

CAUTION

Use a cylinder designed for use with R410A respectively.

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 counterclockwise to fully open the valve.

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.

(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.

99

Pressure gauge

Wide tube

Narrow tube

Balance tube

Wide tube

Narrow tube

Balance tube

Manifold valve

Lo Hi

Close

Open

Close

Fig. 8-5

Open

Close

Close

Close

Close

Close

Open

Open

Open

Fig. 8-6

Liquid

R410A

Valve

Outdoor unit

Outdoor unit

AES


AS1S

9. HOW TO INSTALL THE CEILING PANEL

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

9-1. Installing the Ceiling Panel

(1) Screw the M5

×

40 screws supplied (in the unit packing) into 4 points on the flange surface of the unit bolted to the ceiling. Insert the screws so that the distance between the bottom of the screw head and the bottom surface of the flange is at least 19.05 mm. (Fig. 9-1)

(2) Next, lift the ceiling panel in this position so that the 4 protruding screws pass through the key hole-shaped openings in the panel, then shift the panel sideways until it is caught by the screws.

(3) Keeping the ceiling panel in this position, check to see if the joining edge of the ceiling panels are in line with those of the ceiling material. If they are not in line, remove the ceiling panel and finely adjust the suspension position of the unit.

(4) Once the joining edges are properly aligned with each other, install the supplied stoppers into the key holeshaped openings, then insert the 4 screws until the ceiling panel touches the flange surface of the unit.

M5

×

40 small screw (4)

Unit

Screw

Key hole-shaped opening

Stopper

Ceiling face

Ceiling panel

Air-intake grille

Chain

Hook

A

Insertion direction

Mounting

Accessory

1 2 3

NOTE

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

Accessory part

Insertion direction

B

Fig. 9-1

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)

100


■ 1-Way Air Discharge Semi-Concealed Slim Type

(ASBS Type)


(1) Hook the 2 panel catches of the ceiling panel to the tubing side (stationary side) of the indoor unit.

Then, press up on the opposite side to engage the level catch to install by opening the level catch

(pressed with fingers.) (Fig. 9-2)

Make sure the ceiling panel is mounted correctly.

(2) Fasten the M6 screws (supplied) into 4 points as shown in Fig. 9-3.

CAUTION

Never attempt to move the louver by hand.

Since the louver has an automatic air-sweeping mechanism, it may be damaged.

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

NOTE

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

Connector

(unit side)

Panel catch

(level catch side)


Side panel

Connector

(panel side)

Fig. 9-2

Panel catch

(stationary side)

Side panel

Fig. 9-3

ASBS

101


ASBS

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

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

Fig. 9-5.

● Attaching the side panels

Put the center claw of the side panel into the center recess of the indoor unit.

Pressing 2 claws of the both sides of the side panel toward the inside, press the side panel onto the indoor unit.

● Removing the side panels

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

CAUTION

When attaching the side panels, be sure to hook the safety cords in the holes of the side panels.

Ceiling panel

Fig. 9-4

Suspension bolt

Nut, washer

Ceiling material

Safety cord Center recess

Side panel

Fig. 9-5

Claw

Center claw

Safety cord

102



(AS2S Type)

9-4. Before Installing the Ceiling Panel

(1) Adjust the distance between the unit and the surface of the ceiling (60 mm) using the 2 hexagonal nuts as shown in Fig. 9-6 while following the installation gauge.

(2) Remove the air-intake panel and the air filter from the ceiling panel as shown in Figs. 9-7 and 9-8.

CAUTION

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

Ceiling

Indoor unit

M4

×

25 screw, 2 pcs.

(Only 73 Type)

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

(1) Push in.

→

(2) Slide.

→

(3) Pull.

→

(4) Remove.

Filter installation section

M5

×

40 screw, 4 pcs.

4

2

Indoor unit

Fig. 9-6

Unit: mm


Ceiling panel

Latch

Filter installation section

Air filter

Air-intake panel

AS2S

1

3

Air-intake panel Fig. 9-7

Fig. 9-8

103



(1) Lift the ceiling panel and position it to align the panel catches with the catch recesses of the indoor unit.

(2) Hook the stationary catch first and then press up on the opposite side to engage the level catch to install as shown in Fig. 9-9.

AS2S

NOTE

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

(3) Next, check to see that the ceiling panel is properly aligned with the seamline of the ceiling. If it is not, remove the ceiling panel and slightly readjust the indoor unit body to the proper suspension point.

(4) When the ceiling panel has been properly aligned, use the 4 supplied mounting screws (M5) with washers to permanently fasten the ceiling panel.

(5) Install the wiring connector from the ceiling panel to the connector in the electrical component box of the indoor unit (8P connector if heat pump model).

After installing the connector, use the clamp on the body of the indoor unit to secure the wiring.

NOTE

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

(6) Install the air filter and air-intake grille by performing the steps in Figs. 9-7 and 9-8 in reverse.

9-6. When Removing the Ceiling Panel for

Servicing

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

Release one side of the panel by pressing the panel catch in the direction of the arrow. (See Caution.)

Completely remove the ceiling panel by disengaging the stationary catch. (Fig. 9-9)

CAUTION

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

Panel catch (level catch side)

Panel catch (stationary side)

Fig. 9-9

Connector


Fig. 9-10

104



(ASS Type)

Checking the unit position

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

860

×

860 to 910

×

910 mm

(2) Use the full-scale installation diagram (from the packaging) that was supplied with the unit to determine the positioning of the unit on the ceiling surface. If the positions of the ceiling surface and unit do not match, air leakage, water leakage, flap operation failure, or other problems may result.

CAUTION

● Never place the panel face-down. Either hang it vertically or place it on top of a projecting object. Placing it facedown will damage the surface.

● Do not touch the flap or apply force to it.

(This may cause flap malfunction.)

A must be within the range of 12 – 17 mm.

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

Latch

Main unit

A

Ceiling side

Ceiling opening dimension

Fig. 9-11

Screw

Fig. 9-12a

Wing

Fig. 9-12b

Air-intake grille Ceiling panel

9-7. Before Installing the Ceiling Panel

(1) Remove the air-intake grille and air filter from the ceiling panel. (Figs. 9-12b, 9-13 and 9-14) a) Remove the 2 screws on the latch of the airintake grille. (Fig. 9-12b) b) Slide the air-intake grille catches in the direction shown by the arrows 1 to open the grille.

(Fig. 9-13) c) With the air-intake grille opened, remove the grille hinge from the ceiling panel by sliding it in the direction shown by the arrow 2 .

(Fig. 9-14)

(2) Removing the corner cover a) Slide the corner cover to the direction shown by the arrow 1 to remove the corner cover.

(Fig. 9-15).

2

Air-intake grille hinge

1

1

Fig. 9-13

Fig. 9-14

Corner cover

Ceiling panel

1

Push

ASS

Corner cover

Strap

Fig. 9-15

105


ASS


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

Doing so may damage the flap.)

(1) Insert the temporary fasteners (stainless steel) on the inside of the ceiling panel into the square holes on the unit to temporarily fasten the ceiling panel in place. (Fig. 9-16)

● The ceiling panel must be installed in the correct direction relative to the unit. Align the REF. PIPE and DRAIN marks on the ceiling panel corner with the correct positions on the unit.

● To remove the ceiling panel, support the ceiling panel while pressing the temporary fasteners toward the outside. (Fig. 9-16)

(2) Align the panel installation holes and the unit screw holes.

(3) Tighten the supplied washer head screws at the 4 panel installation locations so that the panel is attached tightly to the unit. (Fig. 9-17)

(4) Check that the panel is attached tightly to the ceiling.

● At this time, make sure that there are no gaps between the unit and the ceiling panel, or between the ceiling panel and the ceiling surface. (Fig. 9-18)

Square hole in unit

Push when you remove

Temporary fastener

Ceiling panel

Washer head screws

Fig. 9-16

REF. PIPE mark

Panel installation hole (4 locations)

Fig. 9-17

Temporary fastener

Drain tubing corner

DRAIN mark

Refrigerant tubing corner

Do not allow gaps

Main unit

Ceiling surface

Fig. 9-18

Ceiling panel

● If there is a gap between the panel and the ceiling, leave the ceiling panel attached and make fine adjustments to the installation height of the unit to eliminate the gap with the ceiling. (Fig. 9-19)

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

CAUTION

● If the screws are not sufficiently tightened, trouble such as that shown in the figure below may occur. Be sure to tighten the screws securely.

● If a gap remains between the ceiling surface and the ceiling panel even after the screws are tightened, adjust the height of the unit again.

Air leakage

Air leakage from

ceiling surface

Staining

Condensation, water leakage

Adjust so that there are no gaps.

Fig. 9-20

106

Fig. 9-19

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


9-9. Wiring the Ceiling Panel

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

(2) Connect the 7P wiring connector (red) from the ceiling panel to the connector in the unit electrical component box.

● If the connectors are not connected, the Auto flap will not operate. Be sure to connect them securely.

● Check that the wiring connector is not caught between the electrical component box and the cover.

● Check that the wiring connector is not caught between the unit and the ceiling panel.

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

Electrical component box cover

Screws

(3 locations)

Ceiling panel side

Ceiling panel wiring connector

Mains side

Clamp

* Pass the wiring connector through the clamp to fasten it in place, as shown in the figure.

9-10. How to Attach the Corner & Air Intake Grille

Fig. 9-21

Attaching the corner cover and air-intake grille

A. Attaching the corner cover

(1) Check that the safety cord from the corner cover is fastened to the ceiling panel pin, as shown in the figure.

(2) Use the supplied screws to attach the corner cover to the ceiling panel.

Pin

B. Attaching the air-intake grille

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

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

● When attaching the air-intake grille, be careful that the flap lead wire does not become caught.

● Be sure to attach the safety cord that prevents the air-intake grille from dropping off to the ceiling panel unit as shown in the figure at right.

Place the corner cover so that the 3 tabs fit into the holes in the ceiling panel.

Then fasten it in place with the supplied screws.

Fig. 9-22

Hole for ceiling panel hook

Hook that prevents the grille from dropping

Fig. 9-23

● With this ceiling panel, the directions of the air-intake grille lattices when installing multiple units, and the position of the label showing the company name on the corner panel, can be changed according to customer requests, as shown in the figure below. However, the optional wireless receiver kit can only be installed at the refrigeranttubing corner of the ceiling unit.

Locations of the air-intake grille catches at the time the product is shipped.

* The grille can be installed with these catches facing in any of 4 directions.

Unit drain hose side

Unit refrigerant tube side

ASS

Optional wireless receiver kit

* Can only be installed

in this position.

Unit electrical component box

Can be installed rotated 90˚

Fig. 9-24

107


ASS

9-11. Checking After Installation

● Check that there are no gaps between the unit and the ceiling panel, or between the ceiling panel and the ceiling surface.

Gaps may cause water leakage and condensation.

● Check that the wiring is securely connected.

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

9-12. When Removing the Ceiling Panel for

Servicing

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

9-13. Adjusting the Auto Flap

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

● Adjust the louver to the desired angle using the remote controller. The louver also has an automatic air-sweeping mechanism.

NOTE

● Never attempt to move the louver by hand.

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

108


10. TEST RUN

10-1. Preparing for Test Run

● Before attempting to start the air conditioner, check the following.

(1) All loose matter is removed from the cabinet especially steel filings, bits of wire, and clips.

(2) The control wiring is correctly connected and all electrical connections are tight.

(3) The protective spacers for the compressor used for transportation have been removed. If not, remove them now.

(4) The transportation pads for the indoor fan have been removed. If not, remove them now.

(5) The power has been connected to the unit for at least 5 hours before starting the compressor. The bottom of the compressor should be warm to the touch and the crankcase heater around the feet of the compressor should be hot to the touch.

(Fig. 10-1)

(6) Both the wide and narrow tube service valves are open. If not, open them now. (Fig. 10-2)

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

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

(8) Be sure to give the instruction manual and warranty certificate to the customer.

(9) When replacing the control PCB, be sure to make all the same settings on the new PCB as were in use before replacement.

The existing EEP ROM is not changed, and is connected to the new control PCB.

ON

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

Power mains switch

Fig. 10-1

Balance tube Narrow tube

Fig. 10-2

Wide tube

109


10-2. Test Run Procedure

<Outdoor unit control PCB>

Unit No. setting switch

(S007)



(S006)



(S004 and S005)

Recheck the items to check before the test run.

Have the outdoor sub units been connected?

YES

Set the unit address.

Set the No. of outdoor units.

Set the No. of indoor units.

*1

NO

*1

The unit with the unit

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

Items to Check Before the Test Run

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

2. Turn the outdoor service valves (3 locations) to the full-open positions.

● Use caution when making the settings. If there are duplicated system addresses, or if the settings for the

Nos. of the indoor units are not consistent, an alarm will occur and the system will not start.

● These settings are not made on the indoor unit PCB.

(Check the link wiring.)



(S002 and S003)

Refer to Fig. 10-4

Are the inter-unit control wires connected to more than 1 refrigerant system?

YES

Set the system address.

NO

When multiple outdoor main units exist, disconnect the terminals extended from the shorted plugs (CN003) at all outdoor main unit

PCBs except for 1.

Alternatively, move the sockets to the OPEN side.

CASE 1

Note: It is not necessary to remove the socket that is used to shortcircuit the terminal plugs from the outdoor sub unit PCBs.

NO

CASE 3B

Is it OK to start the compressors?

Is it possible to turn ON the power only for the 1 refrigerant system where the test run will be performed?

NO

Will automatic address setting be performed in Heating mode?

YES

CASE 3A

Is it OK to start the compressors?

YES CASE 2

Turn ON the indoor and outdoor unit power for that refrigerant system only.

Make necessary corrections.

Short-circuit the automatic address pin (CN100) on the outdoor main unit PCB for 1 second or longer, then release it.

Turn OFF the indoor and outdoor unit power.

Check the alarm contents.

LED 1 and 2 blink alternately

(about 2 or 3 minutes).

Turn ON the indoor and outdoor unit power.

*2

Short-circuit the mode change pin

(CN101) on the outdoor main unit PCB.

At the same time, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

*3

Start indoor and outdoor unit cooling operation.

LED 1 and 2 blink alternately.

Turn ON the indoor and outdoor unit power.

*2

Short-circuit the automatic address pin (CN100) on the outdoor main unit PCB for 1 second or longer, then release it.

*3

Start indoor and outdoor unit heating operation.

LED 1 and 2 blink alternately.

NO

NO

Make necessary corrections

Turn OFF the indoor and outdoor unit

Refer to “Table of Self-

Diagnostic Functions and

Description of Alarm Displays.”

Check the alarm contents.

*2 A minimum of 5 hours must have passed after the power was turned ON to the outdoor unit.

*3 All indoor units operate in all refrigerant systems where the power is ON.

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

YES

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

YES

Check that test run preparation is OK.

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

Refer to the remote controller test-run settings.

Set the wired remote controller for test run.

Does system operate?

NO

YES

Return remote control to normal mode

End test run.

Check and make corrections according to

“Table of Self-Diagnostic Functions.”

Fig. 10-3

110


10-3. Main Outdoor Unit PCB Setting

CN100

CN101

D75 (LED2)

D72 (LED1)

S003

S002

S005

S004

S006

S007

Fig. 10-4

111

CN003 (Terminal plug)

Instead of moving the socket to the OPEN side, unplug the lead wire connector extended from this plug.


● Examples of the No. of indoor units settings

No. of indoor units

1 unit (factory setting)

11 units

21 units

31 units

40 units

Indoor unit setting (S005)

(3P DIP switch, blue)

10 20 30

ON ON

All OFF

1 2 3

OFF

ON

ON

1 ON

1 2 3

OFF

ON ON

2 ON

1 2 3

ON

OFF

ON

3 ON

1 2 3

ON

OFF

ON

1 & 3 ON

1 2 3

OFF

Indoor unit setting (S004)

(Rotary switch, red)

1

Set to 1

1

Set to 1

1

Set to 1

1

Set to 1

0

Set to 0

● Examples of refrigerant circuit (R.C.) address settings (required when link wiring is used)

System address No.

System 1 (factory setting)

System 11

System 21

System 30

System address (S003)


10 20

ON

ON

Both OFF

1

ON

2 OFF

ON

1 ON

1

ON

2 OFF

ON

2 ON

1

ON

2 OFF

ON

1 & 2 ON

1 2 OFF

System address (S002)

(Rotary switch, black)

0

1

1

1

Set to 1

Set to 1

Set to 1

Set to 0

● Examples of the No. of outdoor units settings

No. of outdoor units

1 unit (factory setting)

2 units

3 units

4 units

Outdoor unit setting (S006)


ON ON

1 ON

1

ON

2 3 OFF

ON

2 ON

1 2 3

ON

OFF

ON

1 & 2 ON

1

ON

2 3 OFF

ON

3 ON

1 2 3

OFF

● Address setting of outdoor unit

Unit No. setting

Address setting of outdoor unit (S007)


ON ON Unit No. 1 (main unit)

(factory setting)

1 2 3 OFF

112


10-4. Sub Outdoor Unit PCB Setting

CN100

CN101

D75 (LED2)

D72 (LED1)

S003

S002

S005

S004

S006

S007

Fig. 10-5

● Address setting of outdoor unit

Unit No. setting

Unit No. 2 (sub unit)

(factory setting)



Address setting of outdoor unit (S007)


ON

ON

2 ON

1 2 3

ON

OFF

ON

1 & 2 ON

1

ON

2 3 OFF

ON

3 ON

1 2 3 OFF

The slave unit control PCB contains the same switches as the master unit control PCB for No. of indoor units, No.

of outdoor units, and system address. However it is not necessary to set these switches.

113


10-5. Auto Address Setting

Basic wiring diagram: Example (1)

• If link wiring is not used

(The inter-unit control wires are not connected to multiple refrigerant systems.)

Indoor unit addresses can be set without operating the compressors.

No. 1 (main unit) settings No. of indoor units

(10 units setting)

System address

(system 1 setting)

(S004)

0

(S002)

1

(S003)

ON ON

(S005)

ON

1 2

OFF

ON

No. of outdoor

(S006) units (3 units

ON setting) 1 2 3

1 2 3 OFF

ON

OFF

Unit number setting

(S007)

ON

(Unit No. 1)

1 2 3

ON

OFF

No. 2 (sub unit) settings

Unit number setting

(Unit No. 2) 1

(S007)

ON

2 3

ON

OFF


Unit number setting

(Unit No. 3) 1

(S007)

ON

2 3

ON

OFF

Outdoor Unit

Unit

No. 1

(Main) Outdoor main/sub control wiring


Unit

No. 2

(Sub) Outdoor master/slave control wiring

Unit

No. 3

(Sub)

Indoor Unit 1-1 1-2 1-3

Remote controller cross-over wiring

1-10

Remote controller

Fig. 10-6

(1) Automatic Address Setting from the Outdoor Unit

1. On the outdoor master unit control PCB, check that the system address rotary switch (S002) is set to “1” and

ON that the DIP switch (S003) is set to ON “0.” (These are the settings at the time of factory shipment.)

1 2 OFF

2. To set the number of indoor units that are connected to the outdoor unit to 10, on the outdoor master unit control

PCB set the No. of indoor units DIP switch (S005) to ON

ON “1,” and set the rotary switch (S004) to “0.”

1 2 3

OFF

3. To set the number of outdoor units, on the outdoor master unit control PCB set the No. of outdoor units DIP switch

(S006) to ON

ON

(3 units), and set the unit No. DIP switch (S007) to ON (unit No. 1 – master).

1 2 3

OFF

1

4. On the No. 2 (slave) unit control PCB, set the unit No. switch (S007) to

ON

1

ON

2 3

On the No. 3 (slave) unit control PCB, set the unit No. switch (S007) to

1 2 3

2 3

(unit No. 2).

(unit No. 3).

5. Turn ON the power to the indoor and outdoor units.

6. On the outdoor master unit control PCB, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

↓

(Communication for automatic address setting begins.)

↓ * To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

The LED that indicates that automatic address setting is in progress turns OFF and the process is stopped. Be sure to perform automatic address setting again.

(Automatic address setting is completed when LEDs 1 and 2 on the outdoor master unit control PCB turn OFF.)

↓

7. Operation from the remote controllers is now possible.

* To perform automatic address setting from the remote controller, perform steps 1 to 5, then use the remote controller and

● complete automatic address setting.

Refer to “Automatic Address Setting from the Remote Controller.”

114


Basic wiring diagram: Example (2)

System address

(system 1 setting)

(S002)

1

(S003)

ON

ON

1 2

OFF

• If link wiring is used

No. 1 (main unit) settings

No. of indoor units

(13 units setting)

(S004)

(S005)

ON

ON

No. of outdoor units

(3 units setting)

ON

1

(S006)

2 3

ON

OFF

1 2 3 OFF

Unit number setting

(unit No. 1)

(S007)

ON

1 2 3

ON

OFF

* When multiple outdoor main units exist, remove the socket that is used to short-circuit the terminal plug (CN003) from all outdoor main unit PCBs except for 1.

Alternatively, move the sockets to the “OPEN” side.


Unit number setting

(unit No. 2)

(S007)

ON

1 2 3

ON

OFF


Unit number setting

(unit No. 3)

(S007)

ON

1 2 3

ON

OFF

Outdoor unit system 1

Unit

No. 1

(Main)

Leave the socket that is used to shortcircuit the terminal plug. (CN003)

Unit

No. 2

(Sub) Outdoor main/sub control wiring

Unit

No. 3

(Sub)


Indoor unit 1-1 1-2

Remote controller

No. 1 (main unit) settings

System address

(system 2 setting)

(S002)

2

(S003)

ON

ON

No. of indoor units

(9 units setting)

(S004)

9

1 2

OFF (S005)

ON

ON

No. of outdoor units (2 units setting)

(S006)

ON

1 2 3

ON

OFF

1 2 3

Unit number setting

(unit No. 1)

OFF

(S007)

ON

1 2 3

ON

OFF

1-3

Remote controller communication wiring


Unit number setting

(unit No. 2)

(S007)

ON

1 2 3

ON

OFF

1-13

Outdoor unit system 2

Unit

No. 1

(Main)

Leave the socket that is used to open circuit the terminal plug (CN003).

Unit

No. 2

(Sub)


Outdoor main/sub control wiring

To other system link wiring

Indoor unit 2-1

Remote controller

2-2

Remote controller cross-over wiring

Make settings as appropriate for the cases listed below.

(Refer to the instructions on the following pages.)

• Indoor and outdoor unit power can be turned ON for each system separately.

Case 1

• Indoor and outdoor unit power cannot be turned ON for each system separately.

Automatic address setting in Heating mode Case 2

Automatic address setting in Cooling mode Case 3

Fig. 10-7

2-9

115


●

Case 1 Automatic Address Setting (no compressor operation)

Indoor and outdoor unit power can be turned ON for each system separately.

Indoor unit addresses can be set without operating the compressors.

Automatic Address Setting from Outdoor Unit

1. On the outdoor master unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the DIP switch (S003) is set to “0”

ON

ON . (These are the settings at the time of factory shipment.)

1 2 OFF

2. To set the number of indoor units that are connected to the outdoor unit to 13, on the outdoor master unit control

PCB set the No. of indoor units DIP switch (S005) to “1” ON

ON , and set the rotary switch (S004) to “3.”

1 2 3 OFF

3. To set the number of outdoor units, on the outdoor master unit control PCB set the No. of outdoor units DIP switch (S006) to ON

ON

(3 units).

1 2 3 OFF

ON

4. On the No. 1 (master) unit control PCB, set the unit No. switch (S007) to

On the No. 2 (slave) unit control PCB, set the unit No. switch (S007) to

ON

1 2 3

(unit No. 1).

(unit No. 2).

1

On the No. 3 (slave) unit control PCB, set the unit No. switch (S007) to ON

2 3

(unit No. 3).

1 2 3

5. At the outdoor master unit where all indoor and outdoor unit power has been turned ON, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

↓

(Communication for automatic address setting begins.)

↓

* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.

Be sure to perform automatic address setting again.

(Automatic address setting is completed when LEDs 1 and 2 on the outdoor master unit control PCB turn OFF.)

↓

6. Next turn the power ON only for the indoor and outdoor units of the next (different) system. Repeat steps 1 – 5 in the same way to complete automatic address settings for all systems.

↓

7. Operation from the remote controllers is now possible.

* To perform automatic address setting from the remote controller, perform steps 1 – 4, then use the remote controller and complete automatic address setting.

● Refer to “Automatic Address Setting from Remote Controller.”

116


●

Case 2 Automatic Address Setting in Heating Mode

Indoor and outdoor unit power cannot be turned ON for each system separately.

In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.

Therefore perform this process only after completing all refrigerant tubing work.


1. Perform steps 1 – 4 in the same way as for Case 1 .

5. Turn the indoor and outdoor unit power ON at all systems.

↓

6. To perform automatic address setting in Heating mode , on the outdoor master unit control PCB in the refrigerant system where you wish to set the addresses, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

(Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for more than one system at the same time.)

↓

(Communication for automatic address setting begins, the compressors turn ON, and automatic address

setting in heating mode begins.)

(All indoor units operate.)

↓




(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the master unit control PCB turn OFF.)

7. At the outdoor master unit in the next (different) system, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

↓

(Repeat the same steps to complete automatic address setting for all units.)

↓

8.

Operation from the remote controllers is now possible.

* To perform automatic address setting from the remote controller, perform steps 1 – 5, then use the remote controller and complete automatic address setting.

● Refer to “Automatic Address Setting from Remote Controller.”

117


●

Case 3 Automatic Address Setting in Cooling Mode

Indoor and outdoor unit power cannot be turned ON for each system separately.

In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.

Therefore perform this process only after completing all refrigerant tubing work.

Automatic address setting can be performed during Cooling operation.


1. Perform steps 1 – 4 in the same way as for Case 1 .

5. Turn the indoor and outdoor unit power ON at all systems.

↓

6. To perform automatic address setting in Cooling mode , on the outdoor master unit control PCB in the refrigerant system where you wish to set the addresses, short-circuit the mode change 2P pin (CN101). At the same time, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it. (Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for more than one system at the same time.)

↓

(Communication for automatic address setting begins, the compressors turn ON, and automatic address

setting in Cooling mode begins.)

(All indoor units operate.)

↓




(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor master unit control PCB turn OFF.)

7. At the outdoor master unit in the next (different) system, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.

↓

(Repeat the same steps to complete automatic address setting for all units.)

↓

8.

Operation from the remote controllers is now possible.

* Automatic address setting in Cooling mode cannot be done from the remote controller.

Automatic Address Setting from the Remote Controller

Selecting each refrigerant system individually for automatic address setting

---Automatic address setting for each system: Item code “A1”

● Press the remote controller timer time button and button at the same time. (Press and hold for 4 seconds or longer.)

● Next, press either the temperature setting or button.

(Check that the item code is “A1.”) button to set the system No. to perform ● Use either the or automatic address setting.

● Then press the button.

(Automatic address setting for one refrigerant system begins.)

(When automatic address setting for one system is completed, the system returns to normal stopped status.) <Approximately 4 – 5 minutes is required.>

(During automatic address setting, “NOW SETTING” is displayed on the remote controller. This message disappears when automatic address setting is completed.)

● Repeat the same steps to perform automatic address setting for each successive system.

118


Display during automatic address setting

● On outdoor master unit PCB

LED 2 1

Blink alternately

* Do not short-circuit the automatic address setting pin (CN100) again while automatic address setting is in progress. Doing so will cancel the setting operation and will cause

LEDs 1 and 2 to turn OFF.

* When automatic address setting has been successfully completed, both LEDs 1 and 2 turn OFF.

* LED 1 is D72. LED 2 is D75.

* If automatic address setting is not completed successfully, refer to the table below and correct the problem.

Then perform automatic address setting again.

● Display details of LEDs 1 and 2 on the outdoor unit control PCB

( : ON

LED 1

: Blinking

LED 2

: OFF)

Display meaning

After the power is turned ON (and automatic address setting is not in progress), no communication with the indoor units in that system is possible.

After the power is turned ON (and automatic address setting is not in progress), 1 or more indoor units are confirmed in that system; however, the number of indoor units does not match the number that was set.

Alternating

Automatic address setting is in progress.

Automatic address setting completed.

At time of automatic address setting, the number of indoor units did not match the number that was set.

“ ” (when indoor units are operating) indication appears on the display.

Simultaneous

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

Alternating

Note: “ ” indicates that the solenoid is fused or that there is a CT detection current failure (current is detected when the compressor is OFF).

● Remote controller display is blinking

119


Request concerning recording the indoor/outdoor unit combination Nos.

After automatic address setting has been completed, be sure to record them for future reference.

List the outdoor master unit system address and the addresses of the indoor units in that system in an easily visible location (next to the nameplate), using a permanent marking pen or similar means that cannot be removed easily.

These numbers are necessary for later maintenance. Please be sure to indicate them.

Checking the indoor unit addresses

Use the remote controller to check the indoor unit address.

<If 1 indoor unit is connected to 1 remote controller>

1. Press and hold the button and button for 4 seconds or longer (simple settings mode).

2. The address is displayed for the indoor unit that is connected to the remote controller.

(Only the address of the indoor unit that is connected to the remote controller can be checked.)

3. Press the button again to return to normal remote controller mode.

<If multiple indoor units are connected to 1 remote controller (group control)>

1. Press and hold the button and button for 4 seconds or longer (simple settings mode).

2. “ALL” is displayed on the remote controller.

3. Next, press the button.

4. The address is displayed for 1 of the indoor units which is connected to the remote controller. Check that the fan of that indoor unit starts and that air is discharged.

5. Press the button again and check the address of each indoor unit in sequence.

6. Press the button again to return to normal remote controller mode.

Indoor unit address

Number changes to indicate which indoor unit is currently selected.

Remote Controller Test Run Settings

1. Press the remote controller button for 4 seconds or longer. Then press the button.

● “TEST RUN” appears on the LCD display while the test run is in progress.

● The temperature cannot be adjusted when in Test Run mode.

(This mode places a heavy load on the machines. Therefore use it only when performing the test run.)

2. The test run can be performed using the HEAT, COOL, or FAN operation modes.

Note: The outdoor units will not operate for approximately 3 minutes after the power is turned ON and after operation is stopped.

3. If correct operation is not possible, a code is displayed on the remote controller LCD display.

(Refer to “Table of Self-Diagnostic Functions” and correct the problem.)

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

(To prevent continuous test runs, this remote controller includes a timer function that cancels the test run after

60 minutes.)

* If the test run is performed using the wired remote controller, operation is possible even if the cassette-type ceiling panel has not been installed. (“P09” display does not occur.)

120


10-6. Caution for Pump Down

Pump down means refrigerant gas in the system is returned to the outdoor unit. Pump down is used when the unit is to be moved, or before servicing the refrigerant circuit.

CAUTION

● This outdoor unit cannot collect more than the rated refrigerant amount as shown by the nameplate on the back.

● If the amount of refrigerant is more than that recommended, do not conduct pump down. In this case use another refrigerant collecting system.

121


ASS

11. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER RECEIVER

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

Indoor unit drain tube side

Indoor unit refrigerant tube side

11-1. Installing the Receiver Unit

The only corner where the receiver unit can be installed is the one shown in Fig. 11-1. Therefore, consider the direction of the panel when it is installed on the indoor unit.

(1) Remove the intake grille.

(2) Remove the screws that fasten the adjustable corner cap, then slide the adjustable corner cap to the side to remove it. (Fig. 11-2)

(3) The square hole used for the panel wiring is filled with packing (sponge material) used for insulation.* Remove the packing, then pass the wiring from the wireless receiver unit through the grill.

Twist the wires together and use a cable fastener to fasten them and fix with screw, then replace the packing in the hole as it was before. (Fig. 11-3)

* If this packing is not used, there is danger of condensation on the wiring. Be sure to replace the packing.

(4) After completing wiring as described in “Wiring the

Receiver Unit” on the next page, twist the wires together and use a cable fastener to fasten them, leaving a length of wiring that is long enough to permit removal of the adjustable corner cap. (Fig.

11-3)

(5) Install the receiver unit in the panel. At this time, slide the receiver unit so that each of the 3 tabs fits into its respective hole. Take care that the wires are not pinched. (Fig. 11-4)

* Refer to the instruction manual provided with the panel.

Adjustable corner cap screw

Indoor unit electrical component box

Fig. 11-1

Receiver unit installation position

(Right side of electrical component box)

Ceiling panel

Fig. 11-2

Remove the packing, twist the wires together and fasten them with the cable fastener.

Then replace the packing.

Fig. 11-3

Adjustable corner cap

NOTE

● Do not twist the control wiring together with the power wiring because this may cause a malfunction.

● Install a noise filter or take other appropriate action if electrical noise affects the power supply circuit of the unit.

* For wiring and test run procedures, refer to “Wiring the Receiver Unit” and “Test Run.”

Fig. 11-4

122


11-2. Accessories

No.

Parts

1

Receiver unit

Q'ty

1

1

1

No.

4

5

6

7

AAA alkaline battery

Tapping screw

4

×

16

Parts

Clamp

Fastening screw

4

×

12

2

3

Remote control unit

Remote control holder

11-3. Wiring the Receiver Unit


Indoor unit Receiver PCB

CN001

Remote controller

Terminal board

WHT

BLK

2PWHT

● Connect the wire from the receiver unit to the indoor unit remote controller terminal board. (The wire has no polarity.)

11-4. Precautions on Simultaneous Installation of

Wired Remote Controller and Wireless

Remote Controller

By installing a wired remote controller, the wireless remote controller kit can permit dual remote control operation at the same time.

(Up to 2 units of remote controllers – a wireless kit and a wired unit – can be installed.)

Dual remote control operation can control 1 or multiple air conditioners using several remote controllers.

CAUTION

● Be sure to determine the correct terminal numbers on the indoor unit when wiring the remote controller.

The remote controller will be damaged if high voltage (such as 200

VAC) is applied.

● The wireless remote controller kit components cannot be used for more than 1 indoor unit at a time.

(However, separate receiver units may be used simultaneously.)

● When a wireless remote controller kit and a wired remote controller are used simultaneously, assign either the wireless remote controller or the wired remote controller as the SUB remote controller unit.

123

Q'ty

2

2

1

1

ASS


ASS

(1) To assign the wired remote controller as the sub unit, locate the address connector at the rear of the wired remote controller PCB and disconnect it.

Reconnect it to the sub unit position.

(2) To assign the wireless remote controller as the sub unit, locate the dip switch [S003] on the wireless receiver unit PCB. Set the No. 3 switch to the

ON position.

When 1 indoor unit is operated with 2 remote controllers:

(The indoor unit runs according to which of the remote controllers is assigned as the main or sub unit.)

Wireless remote controller kit

Receiver unit

* (main)

(optional)

CN1

1 2

Wired remote controller

* (sub)

(optional)

1 2

* Use field wiring cables with a cross-sectional area of at least

0.5mm

2 to 2mm 2 .

* The maximum total length of crossover cables must be no longer than 400m.

Remote control wiring (field supply) Remote controller terminal board

Indoor unit

Ground

When several groups of indoor units are operated with 2 remote controllers:

(The remote controller (main or sub unit) can operate with any indoor unit.) unit


Remote control

* (Main)

Receiver (optional)

CN1

1 2 wiring among the control groups

(field supply)


* (Sub)

(optional)

1 2


0.5mm

2

to 2mm

2

.


Remote controller terminal board

Indoor unit No.1

Ground

Indoor unit No.2

Ground Ground

Indoor unit No.3

Ground

Indoor unit No.4

Fig. 11-5

11-5. How to use the Test Run Setting

1. Set DIP switch [S003] No. 1 on the wireless receiver unit PCB from OFF to ON.

2. All indicator lamps in the display section blink during test run operation.

3. No temperature control is available during the test run.

4. After the test run, be sure to reset DIP switch No.

1 back to the OFF position and check that no indicator lamps are blinking. Then remount and attach the PCB cover as before.

NOTE

To avoid placing excessive operating load on the equipment, use this function only when conducting the test run.

S003

Bit 1: OFF ON

ON

Receiver PCB

Receiver unit cover

Fig. 11-6

Adjustable corner cap

124


■ REM HLACS for Ceiling Mounted

(ACS Type)

11-6. Installing the Receiver Unit

(1) To take off the side panel, open the intake grille and remove the screw. Then remove the side panel by moving it toward the front (direction of arrow). (Fig. 11-7)

(2) Wrap the end of a standard (flat) screwdriver blade with vinyl tape. Then insert the screwdriver blade into the groove on the side of the cover below the “O” mark, and pry open the cover.

(Fig. 11-8)

(Take care not to scratch the panel.)

(3) Pass the lead wire through the panel, then install the receiver unit in the panel hole.

(The projections on the receiver unit engage the panel holes to attach the unit.)

(4) Fasten the receiver lead wire to the fastener that holds the louver motor wiring. (Fig. 11-9)

(5) Reattach the side panel.

(6) Route the lead wire from the receiver unit along the louver motor wiring and other wiring and fasten them with a fastener. (Fig. 11-10)

* Access the hole at the top of the electrical component box to draw in the wiring.

NOTE

● Do not twist the control wiring with the power wiring because this may cause malfunction.

● Install a noise filter or take other appropriate action if electrical noise disturbs the unit’s power supply circuit.

* For the wiring and test run procedures, refer to

“Wiring the Receiver Unit” and “Test Run.”

Panel

Fig. 11-7

Vinyl tape

Insert into groove on side below “O” mark.

Fig. 11-8

Side panel

Intake grille

Standard screwdriver

(wrapped with vinyl tape)

Cover

Clamp

Clamp

ACS

Receiver unit

Fig. 11-9

Clamp

Terminal board

Fig. 11-10

125


11-7. Accessories Supplied with Unit

No.

t

1 Receiver unit

2

3

Remote control unit




Indoor unit


Q'ty

1

1

1

WHT

BLK

No.

4

Parts


5

Tapping screw

4

×

16

Receiver unit

CN001

2PWHT

ACS

● Connect the provided wire (already connected to the receiver unit) to the indoor unit remote controller terminal board.

(The wire has no polarity.)

11-9. Precautions on Simultaneous Installation of

Wired Remote Controller and Wireless Remote

Controller

By installing a wired remote controller, the wireless receiver unit can permit dual remote control operation at the same time.

(Up to 2 units of remote controllers – a wireless remote controller and a wired remote controller – can be installed.)


CAUTION

● Be sure to determine the correct terminal numbers on the indoor unit when wiring the remote controller. The remote controller will be damaged if high voltage

(such as 200 VAC) is applied.

● The wireless receiver unit components cannot be used for more than 1 indoor unit at a time. (However, separate receiver units may be used simultaneously.)

● When a wireless receiver unit and a wired remote controller are used simultaneously, assign either the wireless remote controller or the wired remote controller as the sub remote controller unit.

(1) To assign the wired remote controller as the sub unit, locate the address connector at the rear of the wired remote controller PCB and disconnect it.


(2) To assign the wireless remote controller as the sub unit, locate the DIP switch [S003] on the wireless control unit. Set the No. 3 switch to the ON position.

126

Q'ty

2

2




Wireless receiver unit

Control unit

* (main)

(optional)

CN1

1 2


* (sub)

(optional)

1 2


0.5mm

2

to 2mm

2

.



1 2

Indoor unit

Ground

Remote control wiring (field supply)


(The remote controller (main or sub unit) can operate with any indoor unit.)

Wireless receiver unit

* (main)

Remote control wiring among the

Receiver unit

(optional)

CN1 control groups

(field supply)

1 2


* (sub)

(optional)

1 2


0.5mm

2

to 2mm

2

.



1 2

Indoor unit No. 1

Ground Ground

1 2

Indoor unit No. 2

Ground

1 2

Indoor unit No. 3

Ground

1 2

Indoor unit No. 4

Fig. 11-11

11-10. How to Use the Test Run Setting

1. Set DIP switch [S003] No. 1 on the wireless receiver unit PCB from OFF to ON.




1 back to the OFF position and check that no indicator lamps are blinking. Then remount and attach the PCB cover as before.

NOTE

● To avoid placing excessive operating load on the equipment, use this function only when conducting the test run.

● The unit does not receive remote controller signals for approximately 1 minute after the power is turned ON. This is not a malfunction. (The signals are received, but have no immediate effect.)

S003

Bit 1: OFF ON

Fig. 11-12

127

ACS


ASBS

AS2S

■ REM HLAS2BS for 2-Way and High Ceiling

1-Way Type (AS2S, ASBS Type)

For 2-way Cassette Type (AS2S Type)

11-11. Installing the Display

● Remove panel cover A and install the display.

(1) Remove cover A from the rear side of the panel.

(2) Cover B is fit inside cover A. Therefore, spread cover A and remove cover B, as shown in Fig. 11-

13.

Remove the tape that holds cover B in place. It was used for protection during shipping.

(3) Fit the display into the panel.

(4) Pass the display lead wire through the notch in the panel. Use the hole in the plate and a clamp to fasten the wire in place.

(5) Reattach cover A.

Spread

11-12. Installing the Control Unit

NOTE

● Do not twist the control wiring with the power wiring because this may cause malfunction.

● Install a noise filter or take other appropriate action if electrical noise affects the power supply circuit of the unit.

(1) Use the 2 supplied screws (4 x 10) to attach the control unit at the location shown in the diagram below.

(2) Connect the display and control unit 6P connectors.

(3) Connect the control unit lead wire to the indoor unit remote controller wiring terminal.

(4) Bend the lead wire into the correct shape, and use a figure 8 clamp to fasten it in place.

(5) Attach the ceiling panel.



Cover B

Fig. 11-13

Fasten wire in hole of plate.

Pass display lead wire through notch in panel.

Fig. 11-14

Bend excess lead wire, then use figure 8 clamp to fasten it in place.

Control unit

Display

Cover A

Fig. 11-15

128


For 1-Way Air Discharge High-Ceiling Cassette Type (ASBS Type)

11-13. Installing the Display

● Remove the side panel and ceiling panel. Install the display.

(1) Remove the side panel.

a) Press the tabs on both sides of the side panel to disengage the lock. Then slide the panel sideways to remove it.

(2) Remove the ceiling panel.

a) Remove the 4 screws that fasten the ceiling panel to the indoor unit.

b) Disconnect the wiring connector (15P) between the indoor unit and the ceiling panel.

c) While pressing the ceiling panel upwards, press on the bottom of the moveable hook inside the ceiling panel (electrical component box side).

This disconnects one side of the panel.

d) Lift up the opposite side (refrigerant tubing side) of the ceiling panel to disengage the fastening hook. The panel can then be removed.

(3) Remove cover A and cover B.

a) To remove cover A, remove the rivets from the inside of the ceiling panel.

b) Remove cover B.

(4) Install the display onto cover A.

(5) Pass the lead wire from the display into the ceiling panel hole. Then reattach cover A.

(6) Form the lead wire as shown in the figure.

At the position of the cover fastening bracket (part fastened by rivets), extend the lead wire parallel to the ceiling panel side surface, then use tape to fasten it in place.

Use tape to fasten

Wiring connector


Side panel

Ceiling panel

Ceiling panel hole

Fig. 11-16

Panel catch

(level catch side)

Panel catch

(stationary side)

Cover B display

Cover A

Side panel

Fig. 11-17

Part fastened by rivet

Rivet

11-14. Installing the Control Unit

NOTE

Do not twist the control wiring with the power wiring because this may cause malfunction.

Install a noise filter or take other appropriate action if electrical noise affects the power supply circuit of the unit.

Service cover

Fan case

ASBS

AS2S

● Attach the control unit to the indoor unit intake port.

(1) Use the 2 supplied screws (4

×

10) to fasten the control unit to the service cover (cover with attached handle).

(2) Connect the control unit lead wire to the indoor unit remote controller wiring terminal.

(3) Pass the lead wire over the shaft (ceiling side) and clamp it to form it in the correct shape (power-side lead wire).

Service cover fastening clamp

Fig. 11-18

(1)

(3)

129

04-396 InverterW_p109-139 ARGO 12/21/04 3:58 PM Page 130

ASBS

AS2S

(4) Attach the ceiling panel.

(5) Open the air-intake grille. Connect the display and the control unit 6P relay connector (white).

At this time, pass the lead wire from the display through the notch in the main unit, and use the supplied vinyl clamp to bind the lead wire. Then use the fastening clamp to fasten it to the service cover. Also connect the ceiling panel wiring connector.



11-15. Accessories

No.

1 Control unit

Parts

2 Display unit

3

4

5

Remote control unit



Vinyl clamp

Q'ty

1

1

1

1

No.

6 Spacer

Parts Q'ty

2

7

8

9

Tapping screw

4

× 10

Tapping screw

4

× 16

Truss-head Phillips

Vinyl clamp

L 150

4

2

3

2

Control unit

Power-side lead wire

Service cover

Clamp

(3)

Shaft

Fan case

Fig. 11-19



1. Connect W1 to the indoor unit remote controller wiring terminal. (It has no polarity.)

2. Connect W3 from the display and W2 from the control unit to the relay connector.

11-17. Precautions on Simultaneous Installation of Wired Remote Controller and Wireless

Remote Controller

By installing a wired remote controller, the wireless receiver unit can permit dual remote control operation at the same time.

(Up to 2 units of remote controllers – a wireless remote controller and a wired remote controller – can be installed.)


Indoor unit

Remote controller terminal

1

2 board

W1 (1300mm)

WHT

BLK

Control unit Display unit

CN1

CN2

2PWHT

6PWHT

W2 (200mm) W3 (1200mm)

CN1

BLU

YEL

PNK

RED

GRY

BLK

BLU

YEL

PNK

RED

GRY

BLK

6PWHT

Relay connector

(6PWHT)

CAUTION

● Be sure to determine the correct terminal numbers on the indoor unit when wiring the remote controller. The remote controller will be damaged if high voltage (such as 200 VAC) is applied.

130


CAUTION

● The wireless receiver unit components cannot be used for more than 1 indoor unit at a time.

(However, separate receiver units may be used simultaneously.)

● When a wireless receiver unit and a wired remote controller are used simultaneously, assign either the wireless remote controller or the wired remote controller as the sub remote controller unit.

● To assign the wired remote controller as the sub unit, locate the address connector at the rear of the wired remote controller PCB and disconnect it.


● To assign the wireless remote controller as the sub unit, locate the DIP switch [S003] on the wireless control unit PCB. Set the No. 3 switch to the ON position.




*(main)

Control unit

(optional)

CN1

1 2


*(sub)

(optional)

1 2


0.5mm

2

to 2mm

2

.


Remote control wiring (field supply) Remote controller terminal board

Ground

1 2

Indoor unit


(The remote controller (main or sub unit) can operate with any indoor unit.)


*(main)

Control unit

(optional)

CN1

1 2

Remote control wiring among the control groups

(field supply)


*(sub)

(optional)

1 2


0.5mm

2

to 2mm

2

.

* The maximum total length of crossover cables among the control groups must be no longer than 200m.


Ground

1 2

Indoor unit No. 1

Ground

1 2

Indoor unit No. 2

Ground

1 2

Indoor unit No. 3

Ground

1 2

Indoor unit No. 4

Fig. 11-20

131

ASBS

AS2S


ASBS

11-18. How to Use the Test Run Setting

1. Set DIP switch [DS] No. 1 on the wireless receiver unit PCB from OFF to the ON position.




1 back to the OFF position and check that no indicator lamps are blinking.

AS2S NOTE

● Be aware that test run is not possible if the ceiling panel is not attached.

● To avoid placing an excessive load on the equipment, use this function only when conducting the test run.

DS switch “1”

Sub remote controller unit

ON

OFF

1234

Fig. 11-21

132


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

11-19. Accessories Supplied with Separate

Receiver Unit

Q'ty No.

Parts No.

1

Parts

Separate receiver unit

(provided 200mm power cable)

2

Plate mounting

1

1

6

7

8

Spacer

Wire joints

Clamp

3 2

9

Pattern template

95

×

51

4

5

Screws

M4

×

25

Screws

M4

×

40

Wood screws

2

2

Q'ty

4

2

1

1 unit: mm

11-20. Important Information for Installation of

1 Separate Receiver Unit

<Installation location>

● Do not install in a location where the air contains oil mist, such as in a kitchen or factory.

● Do not install next to a window, or in any other location directly exposed to sunlight and outside air.

● Do not install nearby devices which can be expected to produce electrical noise, such as elevators, automatic doors, and industrial sewing machines.

● If the receiver unit is installed near a rapid-start type or inverter-type fluorescent lamp (a lamp which does not include a glow lamp), it may not be possible to receive the wireless remote controller signal in some cases. In order to prevent interference from fluorescent lamps, leave a minimum of 2 meters between the receiver unit and the fluorescent lamps, and install the receiver unit in a location where it can receive the wireless remote controller signal when the fluorescent lamps are lit.

11-21. How to Install the Separate Receiver Unit

NOTE

● To avoid malfunction of the remote controller, do not assemble or run remote control wiring together with the power cables, and do not enclose them in the same metal conduit.

● When the power unit induces electrical noise, it is recommended that a noise filter or the like be installed.

Screws

M4

×

25 (2)

Receiver unit

Spacer

Remove

Face plate

1

2

3

4 5

6

Fig. 11-22

133

AS1S

ADS

ADPS

AFS

AFNS


AS1S

ADS

ADPS

AFS

AFNS

● For flush mounting into a wall, install the separate receiver unit in a metal switch box (field supply) that has been recessed into the wall in advance.

1. Insert a flathead screwdriver or similar tool into the notch, and remove the face plate.

2. Fix the receiver unit with 2 M4 screws provided.

Do not overly tighten, and use the provided spacers. If the receiver unit does not fit in the wall, cut spacers to adjust the clearance.

3. Connect the receiver unit wiring (2-core cable) with the cables extended from the indoor unit.

(Refer to the section on receiver unit wiring.)

Be sure to determine the correct terminal numbers on the indoor unit when wiring the receiver unit.

The remote controller will be damaged if high voltage (such as 200 VAC) is applied.

4.

Reinstall the face plate.

● When using exposed mounting for the receiver unit, install onto a wall where the receiver unit can be attached.

1. Insert a flathead screwdriver or similar tool into the groove on the bottom of the receiver unit. Pry open with the screwdriver and remove the lower case. (Fig. 11-23).

2. In order to later pass the receiver wiring out through the upper case (thin part at the top center), use nippers or a similar tool to cut a notch in the same size as the remote controller cord

(optional). (Fig. 11-24)

3. Disconnect the wires that were connected to the connector at the time of shipment.

4. Fasten the remote controller cord (optional) at the position shown in Fig. 11-25, using the provided clamper. Then connect the cord to the receiver connector.

5. Shape the remote controller cord as shown in Fig.

11-25 so that it fits at the top inside the receiver unit, above the PCB. Then attach the lower case.

At this time, bend the head of the clamp so that it faces sideways.

6. Remove the nameplate and use 2 wood screws to attach the receiver unit.

7. Use the provided cord clips to fasten the remote controller cord to the wall.

8. Reattach the nameplate.

● If the separate receiver unit is installed on the ceiling, use the provided ceiling mounting bracket for installation.

Face plate

Fig. 11-23

Notch where remote controller cord passes through top case

2 3 mm

Clamp

Connector Remote controller cord (optional)

Fig. 11-24

Remote controller cord

(optional)

Clamp

Wood screws (2)

Fig. 11-25

1

2 3

4

5

6

Receiver unit

134


1. Insert a screwdriver or similar tool into the notch at the bottom to remove the receiver nameplate.

2. Cut a section out of the ceiling along the provided paper pattern (95

×

51 mm).

3. Pass the wire through the provided mounting bracket and insert the bracket into the installation hole. (Fig. 11-26)

4. Use bracket parts (A) and (B) to securely grip the ceiling material. (Fig. 11-27)

5. Connect the receiver wire (2-core) to the wire from the indoor unit.

(Refer to “Wiring the Receiver Unit.”)

Check the terminal number on the indoor unit before wiring the receiver unit and be sure not to wire incorrectly. (The unit will be damaged if high voltage, such as 200 VAC, is applied.)

6. Adjust the provided spacers so that they are several millimeters larger than the thickness of the ceiling material. Pass the 2 supplied screws (M4

×

40) through the spacers and tighten them enough to hold the receiver unit in place.

7. Return parts (A) and (B) through the gap between the ceiling and receiver unit so that they are contained in the openings. Then tighten the screws.

Do not tighten the screws excessively. This may result in damage or deformation of the case. Tighten to the point where the receiver unit can be moved slightly by hand. (Fig. 11-28)

8. Reattach the nameplate.

AS1S

Fig. 11-26

Part (A)

Fig. 11-27

Part (B)

Fig. 11-28

ADS

ADPS

AFS

AFNS

135


AS1S

11-22. Wiring the Separate Receiver Unit

* Use wires that are 0.5 mm 2 – 2 mm 2 in diameter.

* The wiring length must not exceed 400 m.

<Flush Mounting>


Indoor unit remote controller terminal board

1

2

WHT

BLK

1

2


Wire of receiver unit (field supply)

Connector

Power wire from receiver unit

Provided wire joint

(WHT 2)

Wire of receiver unit

(field supply)

Power wire from receiver unit

Wire joint

CE-1 (provided)

1. Strip the insulation to approximately 14mm from the ends of the wires to be connected.

2. Twist together the 2 wires and create a crimp connection at the wire joint.

3. If a special crimping tool is not used, or if the connection is soldered, insulate the wires using insulation tape.

<Exposed Mounting>


Indoor unit remote controller terminal board

1

2

ADS

ADPS

AFS

● Use the remote controller cord (optional) for wiring the separate receiver unit.

1. For the methods used to install the remote controller cord, refer to “For flush mounting into a wall, install the separate receiver unit in a metal switch box (field supply) that has been recessed into the wall in advance on P. 134.”

2. When using the remote controller cord (optional), refer to the instruction manual that came with the cord.

Check the terminal number on the indoor unit before wiring the remote controller and be sure not to wire incorrectly. (The unit will be damaged if high voltage, such as 200 VAC, is applied to it.)

WHT

BLK

1

2


Remote controller cord (optional)

AFNS

136


11-23. Important Information for Installation of 2

Separate Receiver Units

When using 2 receiver units to operate 1 or more indoor units at the same time, follow the procedure below to install them.

● Installation method

1. If 2 remote controllers are installed, set one of them as the “main remote controller” (setting at time of factory shipment).

2. At the other remote controller, remove the receiver nameplate and switch the DIP switch to “sub remote controller.” Under these conditions, the receiver unit functions as the sub receiver unit.

* The TIMER lamp lights only at the remote controller that receives the signal.

● Basic wiring diagram

* When connecting the wires, be careful not to wire incorrectly.

(Incorrect wiring will damage the unit.)

● Using 2 separate receiver units to control 1 indoor unit:


(main)

1 2


(sub)

(optional)

1 2


0.5 mm

2

to 2 mm

2

.

* The maximum total length of crossover cables must be no longer than 400 m.


Ground

1 2

Indoor unit

Wire of the receiver unit (field supply)

● Using 2 separate receiver units to control a group of multiple indoor units:

* The main and sub receiver units will operate regardless of the indoor unit in which they are installed.


(main)

(optional)

1 2

Crossover cables of the receiver unit for the control groups (field supply)


(sub)

(optional)

1 2

Remote controller terminal board 1 2

Indoor unit No. 1

Ground Ground

* Use wires that are 0.5 mm 2 – 2 mm 2 in diameter.

* The wiring length must not exceed 400 m.

1 2

Indoor unit No. 2

Ground

1 2

Indoor unit No. 3

1 2

Indoor unit No. 8

Ground

137

AS1S

ADS

ADPS

AFS

AFNS


ADS

ADPS

AFS

AFNS

AS1S

11-24. Test Run Setting

1. Remove the receiver unit face plate, and set the

DIP switch to “Test Run - ON” position.

2. Run the air conditioner using the wireless remote controller by pressing the “ON/OFF” button.

● All LEDs (“RUN,” “TIMER” and “STANDBY”) blink during test run operation.

● No temperature control is effective with the wireless remote controller in the “Test Run – ON” position.

To avoid mechanical strain on the air conditioner, do not use this mode except for conducting a test run.

3. Select any one of the operation modes HEAT,

COOL or FAN for the test run.

* The outdoor unit will not start running for about 3 minutes after the power ON button is pressed.

4. After the test run operation, stop the air conditioner using the wireless remote controller, and then reset the DIP switch in the receiver unit as it was before. (To prevent constant test running of the air conditioner, the receiver unit has a 60-minute offtimer function.)

138


12. SPECIAL REMARKS

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

<Steps> Be sure to turn OFF the power (at mains) before beginning the work below.

(1) In the table below, check the field-supply parts that will be used. (If this setting is not made, the airflow may decrease and condensation may occur.)

Setting

(a)

(b)

Air shield material (for use with 3-direction discharge)*

Air shield material (for use when a discharge duct is connected)*

Air shield material (for use with 2-direction discharge)*

* Use field-supply air shield material.

Setting (a): Go to (2).

Setting (b): Go to (3).

(2) Setting (a)

Open the cover of the electrical component box. Short the short-circuit pin TP3 (2P, yellow) on the indoor unit control PCB.

(3) Setting (b)

Open the cover of the electrical component box. Short the short-circuit pin TP6 (2P, white) on the indoor unit control PCB.

Indoor unit control PCB

* PCB model No.: CR-SRP50A-B

TP6

TP3

TP1

W YL RD

TP6 TP3 TP1

White Yellow Red

139

Via Vares e, 90 - 21013 G allarate (VA) - Italy

Tel. +39 0331 755111 - F ax +39 0331 776240 http://www.argoclima.com

Argo ASS106MH Installation instructions

INSTALLATION INSTRUCTIONS

- MULTISET System Air Conditioner -

DC Inverter 2-Way R410A

R410A Models

Outdoor Units

Optional controllers

IMPORTANT!

Please Read Before Starting

If Necessary, Get Help

In Case of Improper Installation

SPECIAL PRECAUTIONS

When Wiring

When Transporting

When Installing…

When Connecting Refrigerant Tubing

When Servicing

Check of Density Limit

Precautions for Installation Using New Refrigerant

1. Care regarding tubing

New refrigerant R410A cannot be used for earlier models.

CONTENTS

1. GENERAL

2. SELECTING THE INSTALLATION SITE

3. HOW TO INSTALL THE INDOOR UNIT

4. HOW TO INSTALL THE OUTDOOR UNIT

5. ELECTRICAL WIRING

6. HOW TO INSTALL THE REMOTE

CONTROLLER (OPTIONAL PART)

7. HOW TO PROCESS TUBING

8. AIR PURGING

9. HOW TO INSTALL THE CEILING PANEL

10. TEST RUN

11. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER RECEIVER

12. SPECIAL REMARKS

Key Features

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Frequently Answers and Questions

What is the maximum room size that the Argo ASS106MH can cool?

Does the Argo ASS106MH have a remote control?

Is the Argo ASS106MH energy efficient?

Table of contents