Johnson Controls HVAHR168B32S, HVAHR096B32S, HVAHR120B32S, HVAHR144B32S, HVAHR192B32S Installation And Maintenance Manual

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Page 1

Installation

and

Maintenance

Manual

INVERTER-DRIVEN

MULTI-SPLIT SYSTEM

HEAT RECOVERY

AIR CONDITIONERS

Models:

Outdoor Units;

208/230V

(H,Y)VAHR072B32S, (H,Y)VAHR096B32S, (H,Y)VAHR120B32S, (H,Y)VAHR144B32S, (H,Y)VAHR168B32S, (H,Y)VAHR192B32S, (H,Y)VAHR216B32S, (H,Y)VAHR240B32S, (H,Y)VAHR264B32S, (H,Y)VAHR288B32S, (H,Y)VAHR312B32S, (H,Y)VAHR336B32S, (H,Y)VAHR360B32S, (H,Y)VAHR384B32S, (H,Y)VAHR408B32S, (H,Y)VAHR432B32S

460V

(H,Y)VAHR072B42S, (H,Y)VAHR096B42S, (H,Y)VAHR120B42S, (H,Y)VAHR144B42S, (H,Y)VAHR168B42S, (H,Y)VAHR192B42S, (H,Y)VAHR216B42S, (H,Y)VAHR240B42S, (H,Y)VAHR264B42S, (H,Y)VAHR288B42S, (H,Y)VAHR312B42S, (H,Y)VAHR336B42S, (H,Y)VAHR360B42S, (H,Y)VAHR384B42S, (H,Y)VAHR408B42S, (H,Y)VAHR432B42S

IMPORTANT:

READ AND UNDERSTAND THIS MANUAL BEFORE INSTALLING THIS HEAT RECOVERY AIR CONDITIONER. KEEP THIS MANUAL FOR FUTURE REFERENCE.

P5417009

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Important Notice

● Johnson Controls Inc. pursues a policy of continuing improvement in design and performance in its products. As such, Johnson Controls Inc. reserves the right to make changes at any time without prior notice.

● Johnson Controls Inc. cannot anticipate every possible circumstance that might involve a potential hazard.

● This heat recovery air conditioning unit is designed for standard air conditioning applications only. Do not use this unit for anything other than the purposes for which it was intended for.

● The installer and system specialist shall safeguard against leakage in accordance with local codes. No part of this manual may be reproduced in any way without the expressed written consent of Johnson Controls Inc.

● This heat recovery air conditioning unit will be operated and serviced in the United States of America and comes with a full complement of the appropriate Safety, Danger, and Caution, Warnings.

● If you have questions, please contact your distributor or contractor.

● This manual provides common descriptions, basic and advanced information to maintain and service this heat recovery air conditioning unit which you operate as well for other models.

● This heat recovery air conditioning unit has been designed for a specic temperature range. For optimum performance and long life, operate this unit within the range limits according to the table below.

Temperature

F WB (oC WB) 59 (15) ~ 73 (23)

F DB (oC DB) 23 (-5) ~ 122 (50)

F DB (oC DB) 14 (-10) ~ 109 (43)

F DB (oC DB) -10 (-23) ~ 109 (43)

F DB (oC DB) 59 (15) ~ 80 (27)

F WB (oC WB) -13 (-25) ~ 59 (15)

F WB (oC WB) 59 (15) ~ 73 (23)

F DB (oC DB) 23 (-5) ~ 75 (24)

F DB (oC DB) 14 (-10) ~ 75 (24)

F DB (oC DB) -10 (-23) ~ 75 (24)

F DB (oC DB) 59 (15) ~ 80 (27)

F WB (oC WB) 22 (-6) ~ 59 (15)

F WB (oC WB) 12 (-11) ~ 59 (15)

F WB (oC WB) -11 (-24) ~ 59 (15)

Cooling Operation Range

Heating Operation Range

Cooling

Cooling & Heating Operation Range

Heating

DB: Dry Bulb, WB: Wet Bulb

Indoor

Outdoor

1, 2, 3, 6, 10 o

with Snow Protection Hood

with Low Ambient Kit

Indoor

Outdoor

7, 8, 9 o

Indoor

Outdoor

1, 2, 3, 6, 10 o

with Snow Protection Hood

with Low Ambient Kit

Indoor

Outdoor

7, 10 o

with Snow Protection Hood

with Low Ambient Kit

4, 6 o

5, 6, 8 o

4, 6 o

5, 6, 8 o

4, 6 o

5, 6, 8 o

P5417009-rev.6

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1. When the system meets the following conditions, the outdoor unit may be thermo-OFF to prevent the compressor

from failure.

●

Total capacity of the operating indoor unit is larger than capacity of outdoor unit; and

●

Outdoor air temperature is 100oF DB (38oC DB) or more.

2. If the installation takes place under either one of the following conditions, the maximum connectable indoor unit capacity ratio is 100%.

●

Outdoor air temperature is 109oF (43oC) or more during cooling operation; or

●

Outdoor air temperature is 14oF (-10oC) or less during cooling operation.

3. When installing the snow protection hood or low ambient kit, the upper limit of outdoor air temperature must be 109

C).

(43

4. When the outdoor air temperature is 23

F (-5oC) or less during the outdoor unit cooling operation, the minimum

connectable indoor unit capacity is 18MBH. In this case, installing the snow protection hood (optional part) is required.

5. When the outdoor air temperature is 14

F (-10oC) or less during the outdoor unit cooling operation, the minimum

connectable indoor unit capacity is 18MBH. In this case, installing the Low Ambient Kit (optional part) is required.

6. When operating the outdoor unit under the low cooling load conditions and in the low outdoor air temperature, (approx.

F DB (10oC DB) or less), the indoor unit will be Thermo-OFF to prevent the heat exchanger of the indoor unit from

50 frost. Depending on the operating condition, the outlet air temperature of the indoor unit may be excessively low. Pay attention to the direction of the outlet air. Do not place items near the air outlet and under the indoor unit as they may be damaged by condensates that may form if the humidity or the latent heat load is continuously high.

●

(for example:

7. When operating the outdoor unit under the low heating load conditions and the outdoor temperature is

F DB (15oC DB) or more, the outdoor unit will be Thermo-OFF to protect the compressor from failure.

8. Operation in the outdoor temperature of 5~-13

using at kitchen or gymnasium; or

●

using at the room that has high population density or introduces outside air; or

●

using humidier together; or

●

using combustion heater like gas heater together)

F WB (-15~-25oC WB) is assumed to limited conditions such as start-

up in early morning. Extended operation in this condition may shorten the life of the compressor.

9. When the outdoor air temperature is 14

F (-10oC) or less, or under the high heating load conditions, the total indoor

unit capacity should be less than 100% of the outdoor unit capacity, and the total piping length should be less than 984 ft (300m).

10. There are some limitations of the Height Difference between Outdoor Units and Indoor Units. Refer to Section 6.5 “Piping Size and Multi-kit Selection”, for details.

● This manual should be considered as a permanent part of the air conditioning equipment and should remain with the air conditioning equipment.

Product Inspection upon Arrival

1. Upon receiving this product, inspect it for any damages incurred in transit. Claims for damage, either

apparent or concealed, should be led immediately with the shipping company.

2. Check the model number, electrical characteristics (power supply, voltage, and frequency rating), and any accessories to determine if they agree with the purchase order.

3. The standard utilization for this unit is explained in these instructions. Use of this equipment for purposes other than what it designed for is not recommended.

4. Please contact your local agent or contractor as any issues involving installation, performance, or

maintenance arise. Liability does not cover defects originating from unauthorized modications

performed by a customer without the written consent of Johnson Controls, Inc. Performing any mechanical alterations on this product without the consent of the manufacturer will render your warranty null and void.

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Interchangeability between Generation 1 and 2 Change-Over Boxes

● Generation 2 change-over box is compatible with the generation 2 outdoor unit.

● Generation 1 change-over box is compatible with the generation 1 outdoor unit when there is no

generation 2 change-over box in the same system.

● Generation 1 change-over box is compatible with the generation 2 outdoor unit with limitations of the

operating temperature range and the connectable indoor unit capacity ratio.

See the following table “Limitations for Combination of Generation 1 Change-Over Box and Generation 2

Outdoor Unit” for details.

● Generation 1 and 2 change-over boxes can not be used in the same system together.

● Production of generation 1 change-over box shall be discontinued. However, it will be supplied for

servicing and maintenance until further notice. Regarding order requests for the generation 1 changeover box, contact Tech Support at: 1-844-873-4445 (option 2).

Determining Propriety of Connection between

Change-Over Box and VRF Outdoor Unit (Heat Recovery)

Change-Over Box

Generation 1 Generation 2

Model of Change-Over Box

and VRF Outdoor Unit

Single Branch Type Multiple Branch Type Single Branch Type Multiple Branch Type

COBS048B21S COBS096B21S

COBS048B22S COBS096B22S

COB04M132B22S COB08M264B22S COB12M264B22S

(H,Y)VAHR072B31S (H,Y)VAHR096B31S (H,Y)VAHR120B31S

208/230V Type

(H,Y)VAHR072B41S

Generation 1

(H,Y)VAHR096B41S (H,Y)VAHR120B41S

460 Type

(H,Y)VAHR072B32S (H,Y)VAHR096B32S (H,Y)VAHR120B32S (H,Y)VAHR144B32S (H,Y)VAHR168B32S

208/230V Type

(H,Y)VAHR192B32S

VRF Outdoor Unit (Heat Recovery)

(H,Y)VAHR072B42S (H,Y)VAHR096B42S (H,Y)VAHR120B42S (H,Y)VAHR144B42S (H,Y)VAHR168B42S

460V Type

Generation 2 (This Manual)

(H,Y)VAHR192B42S

Available Not Available

Available Available

Limitations for Combination of Generation 1 Change-Over Box and Generation 2 Outdoor Unit

Cooling Operation Range

Heating Operation Range

Temperature

Cooling & Heating Operation Range

Connectable Indoor Unit Capacity Ratio

DB: Dry Bulb, WB: Wet Bulb

Indoor °F WB (°C WB) 59 (15) ~ 73 (23)

Outdoor °F DB (°C DB) 23 (-5) ~ 109 (43)

Indoor °F DB (°C DB) 59 (15) ~ 80 (27)

Outdoor °F WB (°C WB) -4 (-20) ~ 59 (15)

Indoor (Cooling Side) °F WB (°C WB) 59 (15) ~ 73 (23)

Indoor (Heating Side) °F DB (°C DB) 59 (15) ~ 80 (27)

Outdoor

°F DB (°C DB) 23 (-5) ~ 75 (24) °F WB (°C WB) 22 (-6) ~ 59 (15)

Maximum 100%

Minimum

Depending on Outdoor Units

(Refer to Table 3.2 for details.)

P5417009-rev.6

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TABLE OF CONTENTS

1. Introduction ........................................................................................................................................................... 1

2. Important Safety Instructions ................................................................................................................................ 1

3. Before Installation ................................................................................................................................................. 6

3.1 Factory-Supplied Accessories ...................................................................................................................... 6

3.2 Necessary Tools and Instrument List for Installation .................................................................................... 7

3.3 Flaring and Joint ........................................................................................................................................... 9

3.4 Line-Up of Outdoor Units .............................................................................................................................11

3.5 Combinations of Indoor Units and Outdoor Units ....................................................................................... 12

3.6 Caution about Outdoor Unit Installation ..................................................................................................... 14

3.7 Piping Work between Outdoor Units .......................................................................................................... 14

4. Outdoor Unit Installation ..................................................................................................................................... 15

4.1 Installation Location and Precautions ......................................................................................................... 15

4.2 Service Space ............................................................................................................................................ 16

5. Transportation and Installation Work .................................................................................................................. 19

5.1 Transportation ............................................................................................................................................ 19

5.2 Handling of Outdoor Unit ............................................................................................................................ 22

5.3 Installation Work ......................................................................................................................................... 22

5.3.1 Concrete Foundations ...................................................................................................................... 22

5.3.2 Condensate Treatment ..................................................................................................................... 24

6. Refrigerant Piping Work ...................................................................................................................................... 26

6.1 Piping Materials .......................................................................................................................................... 27

6.2 Piping Connection Work ............................................................................................................................. 30

6.2.1 Stop Valve ........................................................................................................................................ 30

6.2.2 Piping Connection Method ................................................................................................................ 32

6.3 Piping Work between Outdoor Units .......................................................................................................... 35

6.4 Piping Sizes between Outdoor Units .......................................................................................................... 38

6.5 Piping Size and Multi-Kit Selection ............................................................................................................. 40

6.6 Multi-Kit Connection ................................................................................................................................... 51

7. Electrical Wiring .................................................................................................................................................. 52

7.1 General Check ........................................................................................................................................... 53

7.2 Electrical Wiring Connection ...................................................................................................................... 54

7.3 Electrical Wiring for Outdoor Unit ............................................................................................................... 57

7.4 Electrical Wiring Connections of Indoor Unit, Outdoor Unit, and Change-Over Box .................................. 59

7.5 DIP Switch Setting of Outdoor Unit ............................................................................................................ 62

8. Additional Refrigerant Charge ............................................................................................................................. 66

8.1 Airtight Test ................................................................................................................................................. 66

8.2 Vacuuming .................................................................................................................................................. 68

8.3 Charging Work ........................................................................................................................................... 69

8.4 Additional Refrigerant Charge Calculation ................................................................................................. 71

9. Test Run .............................................................................................................................................................. 73

9.1 Before Test Run .......................................................................................................................................... 73

9.2 Test Run ..................................................................................................................................................... 74

10. Safety and Control Device Setting ...................................................................................................................... 81

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1. Introduction

This manual concentrates on the Outdoor Heat Recovery Unit. Read this manual carefully before installation. Read over the installation manual for the Indoor Unit also.

This manual should be considered as a permanent part of the air conditioning equipment and should remain with the air conditioning equipment.

(Transportation/Installation Work) > (Refrigerant Piping Work) > (Electrical Wiring Work) > (Ref. Charge Work) > (Test Run) > (User)

2. Important Safety Instructions

Signal Words

Indicates a hazardous situation that, if not avoided, could result in death or serious injury.

Indicates a hazardous situation that, if not avoided, could result in minor or

moderate injury.

Indicates information considered important, but not hazard-related (for example, messages relating to property damage).

General Precautions

To reduce the risk of serious injury or death, read these instructions thoroughly and follow all warnings or cautions included in all manuals that accompanied the product and are attached to the unit. Refer back to these safety

instructions as needed.

● This system should be installed by personnel certied by Johnson Controls, Inc. Personnel must be qualied according to local codes and regulations. Incorrect installation could cause leaks, electric shock, re or explosion. In areas where Seismic ‘’Performance requirements are specied, the

appropriate measures should be taken during installation to guard against possible damage or injury that might occur in an earthquake if the unit is not installed correctly, injuries may occur due to a falling unit.

● Use appropriate Personal Protective Equipment (PPE), such as gloves and protective goggles and, where appropriate, have a gas mask nearby. Also use electrical protection equipment and tools suited

for electrical operation purposes. Keep heat shields, re blankets, and a re extinguisher nearby during

brazing. Use care in handling, rigging, and setting of bulky equipment.

● When transporting, be careful when picking up, moving and mounting these units. Although the unit may be packed using plastic straps, do not use them for transporting the unit from one location to another. Do

not stand on or put any material on the unit. Get a partner to help, and bend with your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum ns on the air conditioner can cut ngers,

so wear protective gloves.

● Do not touch or adjust any safety devices inside the indoor or outdoor units. All safety features, disengagement, and interlocks must be in place and functioning correctly before the equipment is put into operation. If these devices are improperly adjusted or tampered with in any way, a serious accident can occur. Never bypass or jump-out any safety device or switch.

● Johnson Controls will not assume any liability for injuries or damage caused by not following steps

outlined or described in this manual. Unauthorized modications to Johnson Controls products are

prohibited as they…

◦ May create hazards which could result in death, serious injury, equipment damage, or property

damage; ◦ Will void product warranties; ◦ May invalidate product regulatory certications; ◦ May violate OSHA standards;

P5417009-rev.6

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Take the following precautions to reduce the risk of property damage.

● Be careful that moisture, dust, or variant refrigerant compounds not enter the refrigerant cycle during

installation work. Foreign matter could damage internal components or cause blockages.

● If air lters are required on this unit, do not operate the unit without the air lter set in place. If the air lter is not installed, dust may accumulate and breakdown may result.

● Do not install this unit in any place where silicon gases can coalesce. If the silicon gas molecules attach themselves to the surface of the heat exchanger, the nned surfaces will repel water. As a result, any amount of drainage moisture condensate can overow from the drain condensate pan and

could run inside of the electrical box, possibly causing electrical failures.

● When installing the unit in a hospital or other facility where electromagnetic waves are generated from nearby medical and/or electronic devices, be prepared for noise and electronic interference Electromagnetic Interference (EMI). Do not install where the waves can directly radiate into the electrical box, controller cable, or controller. Inverters, appliances, high-frequency medical equipment, and radio communications equipment may cause the unit to malfunction. The operation of the unit may also adversely affect these same devices. Install the unit at least 10 ft. (approximately 3m) away from such devices.

● When a wireless controller is used, locate at a distance of at least 3.3 ft. (approximately 1m) between

the indoor unit and electric lighting. If not, the receiver part of the unit may have difculty receiving

operation commands.

● Do not install the unit in any location where animals and plants can come into direct contact with the outlet air stream. Exposure could adversely affect the animals and plants.

● Do not install the unit with any downward slope to the side of the drain adaptor. If you do, you may

have drain water owing back which may cause leaks.

● Be sure the drain hose discharges water properly. If connected incorrectly, it may cause leaks.

● Do not install the unit in any place where oil can seep onto the units, such as table or seating areas in

restaurants, and so forth. For these locations or social venues, use specialized units with oil-resistant

features built into them. In addition, use a specialized ceiling fan designed for restaurant use. These specialized oil-resistant units can be ordered for such applications. However, in places where large quantities of oil can splash onto the unit, such as a factory, even the specialized units cannot be used. These products should not be installed in such locations.

Installation Precautions

To reduce the risk of serious injury or death, the following installation

precautions must be followed.

● When installing the unit into…

▫ A wall: Make sure the wall is strong enough to hold the unit’s weight. It may be necessary to

construct a strong wood or metal frame to provide added support.

▫ A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can

cause dripping and water damage to walls, oors, or property within the space.

▫ Damp or uneven areas: Use a raised concrete pad or concrete blocks to provide a solid, level

foundation for the unit to prevent water damage and abnormal vibration.

▫ An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame.

Provide a suitable wind bafe.

▫ A snowy area: Install the outdoor unit on a raised platform that is higher than anticipated snow

levels and drifting snow. Provide snow protection hood or low ambient kit.

● Do not install the unit in the following places. Doing so can result in an explosion, re, deformation, corrosion, or product failure.

▫ Explosive or ammable atmosphere ▫ Where re, oil, steam, or powder can directly enter the unit, such as in close proximity or directly

above a kitchen stove. ▫ Where oil (including machinery oil) may be present. ▫ Where corrosive gases such as chlorine, bromine, or sulde can accumulate, such as near a hot

tub or hot spring. ▫ Where dense, salt-laden airow is heavy, such as in coastal regions. ▫ Where the air quality is of high acidity. ▫ Where harmful gases can be generated from decomposition.

P5417009-rev.6

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● Do not position the drain pipe for the indoor unit near any sanitary sewers where corrosive gases may be present. If you do, toxic gases can seep into breathable air spaces and can cause respiratory

injuries. If the drainpipe is installed incorrectly, water leakage and damage to the ceiling, oor,

furniture, or other possessions may result. If condensate piping becomes clogged, moisture can back up and can drip from the indoor unit. Do not install the indoor unit where such dripping can cause moisture damage or uneven locations: Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the unit to prevent water damage and abnormal vibration.

● Before performing any brazing work, be sure that there are no ammable materials or open ames nearby.

● Perform a test run to ensure normal operation. Safety guards, shields, barriers, covers, and protective

devices must be in place while the compressor/unit is operating. During the test run, keep ngers and

clothing away from any moving parts.

● Clean up the site when nished, remembering to check that no tools, metal scraps, or bits of wiring have been left inside the unit being installed.

● During transportation, do not allow the backrest of the forklift make contact with the unit, otherwise, it may cause damage to the heat exchanger and also may cause injury when stopped or started suddenly.

● Remove gas inside the closing pipe when the brazing work is performed. If the brazing ller metal is melted with remaining gas inside, the pipes will be blown off and it may cause injury.

● Be sure to use nitrogen gas for an airtight test. If other gases such as oxygen gas, acetylene gas or

uorocarbon gas are accidentally used, it may cause explosion or gas intoxication.

After installation work for the system has been completed, explain the “Safety Precautions,” the proper use and maintenance of the unit to the customer according to the information in all manuals that came with the system. All manuals and warranty information must be given to the user or left near the Indoor Unit.

Refrigerant Precautions

To reduce the risk of serious injury or death, the following refrigerant

precautions must be followed.

● As originally manufactured, this unit contains refrigerant installed by Johnson Controls. Johnson

Controls uses only refrigerants that have been approved for use in the unit’s intended home country

or market. Johnson Controls distributors similarly are only authorized to provide refrigerants that have been approved for use in the countries or markets they serve. The refrigerant used in this unit

is identied on the unit’s faceplate and/or in the associated manuals. Any additions of refrigerant into this unit must comply with the country’s requirements with regard to refrigerant use and should be

obtained from Johnson Controls distributors. Use of any non-approved refrigerant substitutes will void the warranty and will increase the potential risk of equipment damage, property damage, personal injury, or death.

● Take measures to ensure that the refrigerant limitations in ASHRAE Standard 15 (Canada: B52), or

other local codes, are followed. If refrigerant gas has leaked during the installation work, ventilate the room immediately.

● Check the design pressure for this product is 601 psi (4.15MPa). The pressure of the refrigerant

R410A is 1.4 times higher than that of the refrigerant R22. Therefore, the refrigerant piping for

R410A shall be thicker than that for R22. Make sure to use the specied refrigerant piping. If not, the

refrigerant piping may rupture due to an excessive refrigerant pressure. Besides, pay attention to the piping thickness when using copper refrigerant piping. The thickness of copper refrigerant piping differs depending on its material.

● The refrigerant R410A is adopted. The refrigerant oil tends to be affected by foreign matters such as

moisture, oxide lm, or other non-condensables. Perform the installation work with care to prevent moisture, dust, or different refrigerant from entering the refrigerant cycle. Foreign matter can be

introduced into the cycle from such parts as expansion valve and the operation may be unavailable.

● To avoid the possibility of different refrigerant or refrigerant oil being introduced into the cycle, the

sizes of the charging connections have been changed from R407C type and R22 type. It is necessary to prepare the following tools listed in Section 3 before performing the installation work.

● Use refrigerant pipes and joints which are approved for use with R410A.

● A compressor/unit comprises a pressurized system. Never loosen threaded joints while the system is

under pressure and never open pressurized system parts.

P5417009-rev.6

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● Before installation is complete, make sure that the refrigerant leak test has been performed. If

refrigerant gases escape into the air, turn OFF the main switch, extinguish any open ames and contact your service contractor. Refrigerant (Fluorocarbon) for this unit is odorless. If the refrigerant should leak and come into contact with open ames, toxic gas could be generated. Also, because the uorocarbons are heavier than air, they settle to the oor, which could cause asphyxiation.

● When installing the unit, and connecting refrigerant piping, keep all piping runs as short as possible,

and make sure to securely connect the refrigerant piping before the compressor starts operating. If the refrigerant piping is not connected and the compressor activates with the stop valve opened, the refrigerant cycle will become subjected to extremely high pressure, which can cause an explosion or

re.

● Tighten the are nut with a torque wrench in the specied manner. Do not apply excessive force to the

are nut when tightening. If you do, the are nut can crack and refrigerant leakage may occur.

● When maintaining, relocating, and disposing of the unit, dismantle the refrigerant piping after the

compressor stops.

● When pipes are removed out from under the piping cover, after the insulation work is completed,

cover the gap between the piping cover and pipes by a packing (eld-supplied). If the gap is not

covered, the unit may be damaged if snow, rain water or small animals enter the unit.

● Do not apply excessive force to the stop valve at the end of opening. Otherwise, the stop valve ies

out due to refrigerant pressure. At the test run, fully open the gas and liquid valves, otherwise, these devices will be damaged. (It is closed before shipment.)

● If the arrangement for outdoor units is incorrect, it may cause owback of the refrigerant and result in

failure of the outdoor unit.

● The refrigerant system may be damaged if the slope of the piping connection kit exceeds +15

Electrical Precautions

Take the following precautions to reduce the risk of electric shock, re or

explosion resulting in serious injury or death.

● 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 property damage, serious injury, or death.

● Perform all electrical work in strict accordance with this manual and all the relevant regulatory

standards.

● Before servicing, open and tag all disconnect switches. Never assume electrical power is

disconnected. Check with meter and equipment.

● Only use electrical protection equipment and tools suited for this installation.

● Use specied cables between units.

● The new air conditioner may not function normally in the following instances:

▫ If electrical power for the new air conditioner is supplied from the same transformer as the

external equipment* referred to below.

▫ If the power supply cables for this external equipment* and the new air conditioner unit are

located in close proximity to each other.

External Equipment*: (Example): A lift, container crane, rectier for electric railway, inverter

power device, arc furnace, electric furnace, large-sized induction motor and large-sized switch.

Regarding the cases mentioned above, surge voltage may be inducted into the power supply cables for the packaged air conditioner due to a rapid change in power consumption of the device and an activation of a switch.

Check eld regulations and standards before performing electrical work in order to protect the

power supply for the new air conditioner unit.

● Communication cable shall be a minimum of AWG18 (0.82mm

), 2-Conductor, Stranded Copper. Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cable is applied, secure properly and terminate cable shield as required per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements.

● Use an exclusive power supply for the air conditioner at the unit’s rated voltage.

P5417009-rev.6

Page 11

● Be sure to install circuit breakers (ground fault interrupter, isolating switch, molded case circuit

breaker and so on), with the specied capacity. Ensure that the wiring terminals are tightened securely to recommended torque specications.

● Clamp electrical wires securely with a cable clamp after all wiring is connected to the terminal block. In addition, run wires securely through the wiring access channel.

● When installing the power lines, do not apply tension to the cables. Secure the suspended cables at regular intervals, but not too tightly.

● Make sure that the terminals do not come into contact with the surface of the electrical box. If the terminals are too close to the surface, it may lead to failures at the terminal connection.

● Turn OFF and disconnect the unit from the power supply when handling the service connector. Do not

open the service cover or access panel to the indoor or outdoor units without turning OFF the main

power supply.

● After ceasing operation, be sure to wait at least ve minutes before turning off the main power switch. Otherwise, water leakage or electrical breakdown may result. Disconnect the power supply completely before attempting any maintenance for electrical parts. Check to ensure that no residual voltage is present after disconnecting the power supply.

● Do not clean with, or pour water into, the controller as it could cause electric shock and/or damage the unit. Do not use strong detergent such as a solvent. Clean with a soft cloth.

● Check that the ground wire is securely connected. Do not connect ground wiring to gas piping, water piping, lighting conductor, or telephone ground wiring.

● If a circuit breaker or fuse is frequently activated, shut down the system and contact your service contractor.

● Perform all electrical work in accordance with this manual and in compliance with all regulations and safety standards.

● Do not open a service access cover or panel of an indoor or outdoor unit without rst turning OFF the power at the main power supply.

● Residual voltage can cause electric shock. At all times, check for residual voltage after disconnecting from the power supply before starting work on the unit.

● This equipment can be installed with a Ground Fault Circuit Breaker (GFCI), which is a recognized measure for added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches, and wiring in accordance with local codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements.

P5417009-rev.6

Page 12

3. Before Installation

3.1 Factory-Supplied Accessories

Check to ensure that the following accessories are packed with the outdoor unit.

Accessory 72 Model 96 Model 120 Model 144 Model 168 Model 192 Model Remarks

inch (mm)

Connection for Refrigerant Gas (High/Low) Pipe

Connection for Refrigerant Gas

Accessory Pipe

Cable Clamp

Cable Band

Screw (One for Fixing Cable Clamp, Two for Spare)

PVC Tube × 2 × 2 × 2 × 2 × 2 × 2 ID 1/2 (12)

(Low) Pipe

Connection for Refrigerant Liquid Pipe

90° Elbow for

Refrigerant Gas

Pipe

For Fixing Power Supply Wiring

For Fixing PVC Tube

ID 7/8 (22.2) →

OD 3/4 (19.05)

OD 3/8 (9.52) → OD 1/2 (12.7)

x 1 x 1

ID 7/8 (22.2) →

OD 3/4 (19.05)

x 1 x 1 x 1 x 1 x 1 x 1

× 2 × 2 × 2 × 2 × 2 × 2

× 5 × 5 × 5 × 5 × 5 × 5

× 3 × 3 × 3 × 3 × 3 × 3

ID 1 (25.4) → OD 7/8 (22.2)

x 1 x 1

ID 1 (25.4) → OD 1 (25.4)

x 1 x 1 x 1

- -

x 1 x 1 x 1

- - - -

ID 1 (25.4) → OD 1-1/8 (28.6)

ID 1 (25.4) → OD 1 (25.4)

ID 1 (25.4) → OD 1-1/8 (28.6)

OD 1/2 (12.7) → OD 5/8 (15.88)

ID 1 (25.4) → OD 1 (25.4)

- -

Rubber Bush

Open/Close Indication for Stop Valve

Seismic Plate

Refrigerant Label

For Communication Cable

For Indication

of “Open”

× 2 × 2 × 2 × 2 × 2 × 2 OD 1-1/2 (38)

× 3 × 3 × 3 × 3 × 3 × 3

× 4 × 4 × 4 × 4 × 4 × 4

NOTICE

If any of these accessories are not packed with the unit, please contact your distributor.

P5417009-rev.6

Page 13

3.2 Necessary Tools and Instrument List for Installation

No. Tool No. Tool No. Tool

1 Handsaw 8 Pliers 16 Wire Cutters

Phillips Screwdriver,

Slotted Screwdriver

3 Vacuum Pump 11 Hexagon Wrench 19 Crimper for Solderless Terminals

4 Refrigerant Gas Hose 12 Wrench 20 Hoist (for Indoor Unit)

5 Megohmmeter 13 Scale 21 Ammeter

6 Copper Pipe Bender 14 Charging Cylinder 22 Voltage Meter

7 Manual Water Pump (for Indoor Unit) 15 Gauge Manifold 23 Ratchet Wrench

Use specially designated tools for handling R410A refrigerant.

9 Copper Tube Cutter 17 Gas Leak Detector

10 Brazing Kit 18 Level

P5417009-rev.6

Page 14

: Interchangeability is available with current R22

: Prohibited

Interchangeability

Measuring Instrument and Tool

with R22

R410A R407C

Copper Tube Cutter, Chamfering Reamer

Flaring Tool

Extrusion

Adjustment Gauge

Pipe Bender

Expanding Tool

G G

G l G

G G

Refrigerant

Pipe

l G

Torque Wrench

G G

Brazing Tool

Nitrogen Gas

Lubrication Oil

(for Flare Surface)

Refrigerant Cylinder

Vacuum Pump

Adapter for Vacuum Pump

Manifold Valve

G G

l F

G G H

l F

Vacuum

Drying

Refrigerant

Charge

Charging Hose

Charging Cylinder

Weight Scale

Refrigerant Gas

Leakage Detector

: Interchangeability with R407C.

l F

5 5

G G

: Only for Refrigerant R410A (No Interchangeability with R22)

: Only for Refrigerant R407C (No Interchangeability with R22)

Reason of Non-Interchangeability and Attention

(H: Strictly Required)

* The aring tools for R407C are applicable to R22. * If using a aring tube, make the dimension of the

tube larger for R410A.

* For a hard temper pipe, aring is not available.

* For a hard temper pipe, bending is not available.

Cutting Pipe Removing Burrs

Flaring for Tubes

Dimensional Control for Extruded Portion

of Tube after Flaring

Bending

Use an elbow for bending and brazing.

* For a hard temper pipe, expansion of the tube is

Expanding Tubes

not available. Use socket for connecting tube.

* For 1/2 inch D. (12.7mm), 5/8 inch D. (15.88mm),

spanner size is up 1/16 inch (2mm).

Connection of

Flare Nut

* For 1/4 inch D. (6.35mm), 3/8 inch D. (9.52mm),

3/4 inch D. (19.05mm), spanner size is the same.

* Perform correct brazing work. Brazing for Tubes

* Strict Control against Contamination

(Blow nitrogen during brazing.)

Prevention from Oxidation during Brazing

* Use a synthetic oil which is equivalent to the oil

used in the refrigeration cycle.

Applying Oil to

the Flared Surface

* Synthetic oil absorbs moisture quickly.

* Check refrigerant cylinder color.

Liquid refrigerant charging is required for zeotropic

Refrigerant Charging

refrigerant.

The current ones are applicable. However, it is

Vacuum Pumping

required to mount a vacuum pump adapter which

can prevent reverse ow when a vacuum pump stops, resulting in no reverse oil ow.

* No interchangeability is available due to higher

pressures when compared with R22.

Use the same ones as for the current refrigerant.

Otherwise, mineral oil will ow into the cycle and

cause sludge resulting in clogging or compressor

Vacuum Pumping, Vacuum Holding, Refrigerant Charging and Check of Pressures

failure.

Connection diameter is different; R410A: UNF1/2, R407C: UNF7/16.

* Use the weight scale to ensure proper charging of

the unit.

Measuring

Instrument for Refrigerant Charging

* The current gas leakage detector (R22) is not

applicable due to a different detecting method.

Gas Leakage Check

Use

P5417009-rev.6

Page 15

3.3 Flaring and Joint

1/64 ~ 1/32R

Flaring Dimension

•

Perform the aring work as shown below.

Diameter

(d)

-0.02 (-0.4)

R410A

inch (mm)

1/4 (6.35) 0.36 (9.1)

3/8 (9.52) 0.52 (13.2)

Joint Selection

•

1/2 (12.7) 0.65 (16.6)

5/8 (15.88) 0.78 (19.7)

3/4 (19.05) (T)

(T) It is impossible to perform aring work

with hard temper pipe.

Use an accessory pipe with a are.

If hard temper pipe is used, the aring work cannot be performed. In this case, use a joint selected from

the table below. Do not use any other thin joint other than the ones shown in the table at left.

Minimum Thickness of Joint

inch (mm)

Diameter R410A

1/4 (6.35) 0.020 (0.5)

3/8 (9.52) 0.024 (0.6)

1/2 (12.7) 0.028 (0.7)

5/8 (15.88) 0.031 (0.8)

3/4 (19.05) 0.031 (0.8)

7/8 (22.2) 0.035 (0.9)

1-1/8 (28.58) 0.039 (1.0)

1-3/8 (34.93) 0.047 (1.2)

1-5/8 (41.28) 0.057 (1.45)

Flare Nut Dimension B

inch (mm)

Diameter R410A

1/4 (6.35) 11/16 (17)

3/8 (9.52) 7/8 (22)

1/2 (12.7) 1 (26)

5/8 (15.88) 1-1/8 (29)

3/4 (19.05) 1-7/16 (36)

Flare Nut

Piping Thickness and Material

•

Use the pipe as described below.

The thickness of refrigerant pipe differs depending on design pressure.

For copper pipe, pay attention to pipe selection, because the piping thickness differs depending on its

material.

Outer Diameter

1/4 (6.35) 0.03 (0.76) Annealed

3/8 (9.52) 0.032 (0.81) Annealed

1/2 (12.7) 0.032 (0.81) Annealed

5/8 (15.88) 0.035 (0.89) Annealed

3/4 (19.05) 0.035 (0.89) Hard Temper (or Annealed)

7/8 (22.2) 0.045 (1.14) Hard Temper

1-1/8 (28.58) 0.050 (1.27) Hard Temper

1-3/8 (34.93) 0.065 (1.65) Hard Temper

1-5/8 (41.28) 0.072 (1.83) Hard Temper

Thickness Temper

inch (mm)

R410A

NOTES:

• Do not use pipe that has allowable pressure less than 601 psi (4.15MPa).

• The reference value of the refrigerant piping thickness is indicated in the table at left. Do not use pipe that is considerably different from the reference value.

P5417009-rev.6

Page 16

Processing at Brazing Connection

•

To prevent gas leakage at the brazing connection, refer to the following table for the insertion depth and the gap for the joint pipe.

3/16

5/16

1/2

(12

5/8

(16

(25

1-3/8

(35

Diameter

(D) < D < 5/16

< D < 8)

< D < 1/2

< D < 12)

< D < 5/8

< D < 16)

< D < 1

< D < 25)

< D < 1-3/8

< D < 35)

< D < 1-3/4

< D < 45)

Min. Insertion Depth

(B)

1/4 (6)

9/32 (7)

5/16 (8)

3/8 (10)

1/2 (12)

9/16 (14)

(A - D)

0.002 - 0.014 (0.05 - 0.35)

0.002 - 0.018 (0.05 - 0.45)

0.002 - 0.022 (0.05 - 0.55)

inch (mm)

Gap

P5417009-rev.6

Page 17

3.4 Line-Up of Outdoor Units

(1) This outdoor unit series can build the capacity of 72 to 432 MBH by combining the outdoor units of 72

to 192 MBH.

(2) The outdoor units of 216 to 432 MBH consist of the combination of two to three base units.

Use the combination of units in the following table. If the combinations are not listed, then they are not available.

208/230V

Base Unit

Capacity (MBH) 72 96 120

Model (H,Y)VAHR072B32S (H,Y)VAHR096B32S (H,Y)VAHR120B32S

Capacity (MBH) 144 168 192

Model (H,Y)VAHR144B32S (H,Y)VAHR168B32S (H,Y)VAHR192B32S

Combination of Base Units

Capacity (MBH) 216 240 264 288

Model (H,Y)VAHR216B32S (H,Y)VAHR240B32S (H,Y)VAHR264B32S (H,Y)VAHR288B32S

Combination

Capacity (MBH) 312 336 360

Model (H,Y)VAHR312B32S (H,Y)VAHR336B32S (H,Y)VAHR360B32S

Combination

(H,Y)VAHR144B32S (H,Y)VAHR120B32S (H,Y)VAHR144B32S (H,Y)VAHR144B32S

(H,Y)VAHR072B32S (H,Y)VAHR120B32S (H,Y)VAHR120B32S (H,Y)VAHR144B32S

(H,Y)VAHR168B32S (H,Y)VAHR192B32S (H,Y)VAHR192B32S

(H,Y)VAHR144B32S (H,Y)VAHR144B32S (H,Y)VAHR168B32S

Capacity (MBH) 384 408 432

Model (H,Y)VAHR384B32S (H,Y)VAHR408B32S (H,Y)VAHR432B32S

(H,Y)VAHR144B32S (H,Y)VAHR144B32S (H,Y)VAHR144B32S

Combination

(H,Y)VAHR120B32S (H,Y)VAHR144B32S (H,Y)VAHR144B32S

(H,Y)VAHR120B32S (H,Y)VAHR120B32S (H,Y)VAHR144B32S

460V

Base Unit

Capacity (MBH) 72 96 120

Model (H,Y)VAHR072B42S (H,Y)VAHR096B42S (H,Y)VAHR120B42S

Capacity (MBH) 144 168 192

Model (H,Y)VAHR144B42S (H,Y)VAHR168B42S (H,Y)VAHR192B42S

Combination of Base Units

Capacity (MBH) 216 240 264 288

Model (H,Y)VAHR216B42S (H,Y)VAHR240B42S (H,Y)VAHR264B42S (H,Y)VAHR288B42S

Combination

Capacity (MBH) 312 336 360

Model (H,Y)VAHR312B42S (H,Y)VAHR336B42S (H,Y)VAHR360B42S

Combination

(H,Y)VAHR144B42S (H,Y)VAHR120B42S (H,Y)VAHR144B42S (H,Y)VAHR144B42S

(H,Y)VAHR072B42S (H,Y)VAHR120B42S (H,Y)VAHR120B42S (H,Y)VAHR144B42S

(H,Y)VAHR168B42S (H,Y)VAHR192B42S (H,Y)VAHR192B42S

(H,Y)VAHR144B42S (H,Y)VAHR144B42S (H,Y)VAHR168B42S

Capacity (MBH) 384 408 432

Model (H,Y)VAHR384B42S (H,Y)VAHR408B42S (H,Y)VAHR432B42S

(H,Y)VAHR144B42S (H,Y)VAHR144B42S (H,Y)VAHR144B42S

Combination

P5417009-rev.6

(H,Y)VAHR120B42S (H,Y)VAHR144B42S (H,Y)VAHR144B42S

(H,Y)VAHR120B42S (H,Y)VAHR120B42S (H,Y)VAHR144B42S

Page 18

3.5 Combinations of Indoor Units and Outdoor Units

Table 3.1 Indoor Unit Model List

Capacity (MBH)

Ducted

Non-

Ducted

Indoor Unit Model

Ducted (High Static)

Ducted (Medium Static)

Ducted (Slim) (H,Y)IDS_B21S

Ducted (EconoFresh) (H,Y)IDM_B21E

Air Handler with DX-Kit (H,Y)MAHP_(B,C,D)21S

Ceiling-Mounted 4-Way Cassette (H,Y)IC4_B21S

Ceiling-Mounted 4-Way Cassette Mini (H,Y)ICM_B21S

Ceiling-Mounted 2-Way Cassette (H,Y)IC2_B21S

Ceiling-Mounted 1-Way Cassette (H,Y)IC1_B21S

Wall-Mounted TIWM_B21S

Ceiling Suspended (H,Y)ICS_B21S

Floor Exposed (H,Y)IFE_B21S

Floor Concealed (H,Y)IFC_B21S

(H,Y)IDH_B21S

(H,Y)IDH_B22S

(H,Y)IDM_B21S

(H,Y)IDM_B22S

6 8 12 15 18 24 27 30 36 48 54 60 72 96

: Available

NOTICE:

For connection to a Ducted (EconoFresh), see below.

● Ducted (EconoFresh) only: Total capacity of Ducted (EconoFresh) is 70%~100% of the outdoor unit capacity.

● Ducted (EconoFresh) + Other Standard Indoor Unit: Total capacity of Ducted (EconoFresh) is 30% or below the outdoor unit capacity.

and

Total capacity of indoor unit, including Ducted (EconoFresh) is 70%~100% of the outdoor unit capacity.

P5417009-rev.6

Page 19

The number of indoor units that can be connected to an outdoor unit is dened in Table 3.2.

Comply with the following conditions when installing the unit.

A maximum and minimum total capacity as opposed to the nominal outdoor unit capacity can be obtained

through combination of indoor units.

Table 3.2 System Combination

Model: (H,Y)VAHR_B(3,4)2S

Outdoor Unit

Capacity

(MBH)

Minimum Capacity at

Individual Operation

(MBH)

Maximum Number

of Connectable I.U.

15 8 130% 70%

Recommended

Number of

Connected I.U.

Connectable Indoor Unit

Capacity Ratio

2,3,4,5

Maximum

Minimum

96 20 8 130% 65%

120 26 8 130% 60%

144 26 10 130% 55%

168 36 12 130% 55%

192 40 14 130% 55%

216 46 18 130% 60%

240 52 18 130% 60%

264 56 20 130% 55%

288 59 20 130% 55%

312 64 22 130% 55%

336 64 24 130% 55%

360 64 28 130% 55%

384 64 30 130% 55%

408 64 30 130% 55%

432 64 30 130% 55%

1. When the outdoor air temperature is 23

F (-5oC) or less during the outdoor unit cooling operation, the minimum

connectable indoor unit capacity is 18 MBH. A snow protection hood or low ambient kit (optional part) should be installed.

2. When the outdoor air temperature is 109

F (43oC) or warmer during the outdoor unit cooling operation, the maximum

connectable indoor unit capacity ratio is 100%.

3. When the outdoor air temperature is 14

F (-10oC) or less, or under the high heating load conditions, the total indoor

unit capacity should be less than 100% of the outdoor unit capacity, and the total piping length should be less than 984 ft (300m).

4. When the number of connected indoor unit (I.U.) is within the recommended, the maximum connectable indoor unit capacity ratio is available up to 150%.

5. There are some limitations of the Height Difference between Outdoor Units and Indoor Units. Refer to Section 6.5 “Piping Size and Multi-kit Selection”, for details.

NOTICE:

The connectable indoor unit capacity ratio can be calculated as follows: Connectable Indoor Unit Capacity Ratio = Total Indoor Unit Capacity / Total Outdoor Unit Capacity

In a system where all the indoor units operate simultaneously, the total indoor unit capacity should be less than the outdoor unit capacity. Otherwise, a decrease in operating performance and an increase in the operating limit can result in an overload.

In a system where all the indoor units do not operate simultaneously, the total indoor unit capacity is available up to 150% against the outdoor unit capacity.

The air ow volume for indoor units of 6 and 8 MBH is set higher than that for indoor units of 12 MBH or more. Make sure to select appropriate indoor units for installation where a cold draft may occur during heating operation. If installing indoor units in such locations, refer to the recommended number of indoor units as shown in above table that can be connected.

P5417009-rev.6

Page 20

3.6 Caution about Outdoor Unit Installation

: Maintain a straight-line distance of 19-11/16 inches (500mm) or more for piping after installing the piping connection kit.

NOTICE

When the installation and piping work for the multiple outdoor units is performed, it is required that you determine the arrangement of the outdoor units and the piping length. Perform the installation work in strict accordance with the following requirements.

If the arrangement for outdoor units is incorrect, it may cause owback of the refrigerant and result in failure

of the outdoor unit.

Requirements for Combining Two and Three Units

(1) When using a combination of two and three outdoor units, align the outdoor units from largest capacity

to smallest as A > B > C and outdoor unit “A” is connected to the piping connection kit 1.

(2) The piping length between the piping connection kit 1 and the outdoor unit should be

La < Lb < Lc < 32 ft (10m).

Outdoor Unit

Piping Connection Kit 1Piping Connection Kit 1

Indoor Unit Side

Outdoor UnitAOutdoor Unit

144 MBH 144 MBH 120 MBH 120 MBH 144 MBH 144 MBH

La LaLb LbLc Lc

Piping Direction Piping Direction

Piping Connection Kit 2 Piping Connection Kit 2

Outdoor Unit

3.7 Piping Work between Outdoor Units

When installing a combination unit, a piping connection kit is needed for each additional unit but not for the base unit: (72, 96, 120, 144, 168, 192 Models). The piping connection kit (MC-NP**SX) consists of branch pipes for low pressure gas, high/low pressure gas and liquid. Interconnecting pipe is not included in these

kits (eld-supplied).

Model: (H,Y)VAHR_B(3,4)2S

Operation

Outdoor Unit

Capacity

216 - 360 2 MC-NP21SX 1

Heat Recovery

384 - 432 3 MC-NP30SX 1

Applicable Outdoor Unit

Outdoor Unit

(MBH)

Number

Model Piping Set Remarks

3 Pipes Type

* for Low Pressure Gas * for High/Low Pressure Gas

* for Liquid

P5417009-rev.6

Page 21

4. Outdoor Unit Installation

Air Outlet

4.1 Installation Location and Precautions

To reduce the risk of serious injury or death, the following installation precautions must be followed.

● When installing the unit into… ▫ A wall: Make sure the wall is strong enough to hold the unit’s weight. It may be necessary to

construct a strong wood or metal frame to provide added support.

▫ A room: Properly insulate any refrigerant tubing run inside a room to prevent “sweating” that can

cause dripping and water damage to walls, oors, equipment, and property.

▫ Damp or uneven areas: Use a raised concrete pad or concrete blocks to provide a solid, level

foundation for the unit to prevent water damage and abnormal vibration.

▫ An area with high winds: Securely anchor the outdoor unit down with bolts and a metal frame.

Provide a suitable wind bafe (eld-supplied).

▫ A snowy area: Install the outdoor unit on a raised platform that is higher than the anticipated snow

levels and drifting snow. Provide snow protection hood or low ambient kit (optional part).

● Do not install the unit in the following places. Doing so can result in an explosion, re, deformation,

corrosion, or product failure.

▫ Explosive or ammable atmosphere ▫ Where a re, oil, steam or powder can directly enter the unit, such as nearby or above a kitchen

stove. ▫ Where oil (including machinery oil) may be present. ▫ Where corrosive gases such as chlorine, bromine, or sulde can accumulate, such as near a hot

● During heating or defrosting operation, drain water is discharged. Provide adequate drainage around the foundation. If installing the unit on a roof or a balcony, provide the additional drainage around the foundation to prevent water from dripping on walk ways, people, property, and preventing ice from forming during freezing temperatures creating slip hazards.

● Before performing any brazing work, be sure that there are no ammable materials or open ames nearby.

● Perform a test run to ensure normal operation. Safety guards, shields, barriers, covers, and protective

devices must be in place while the compressor/unit is operating. During the test run, keep ngers and

clothing away from any moving parts.

● Clean up the site when nished, remembering to check that no tools, metal scraps, or bits of wiring have been left behind inside the unit being installed.

Seasonal Wind

Snow attaches directly to the heat exchanger.

Seasonal Wind

Air Inlet Hood

Provide a base which has approximately twice the height of forecast snow accumulation.

Hood

* Refer to the Engineering Manual for details of the optional part.

P5417009-rev.6

Page 22

4.2 Service Space

Unit: inch (mm)

Side View

NOTICE: Refer to the Engineering Manual for the outdoor unit when installing the low ambient kit.

When an outdoor unit is installed, allow sufcient clearance as follows:

•If there is insufcient clearance for air inlets and outlets, performance drop-off and mechanical issues due

to insufcient air intake may result.

•Additionally, adequate clearance is required for service maintenance access.

Min. 59-1/16

Front Side

(1500)

59-1/16

Min. 19-11/16 (500) + h2/2 Min. 11-13/16 (300) + h1/2

Rear Side

30-1/8

(765)

(1500)

19-11/16

(500)

- If there are no walls on the front and rear sides, clearance for service access is required as follows:

* Front Side: Minimum 19-11/16 inches (500mm)

* Rear Side: Minimum 11-13/16 inches (300mm) * Right and Left Sides: Minimum 3/8 inches (10mm)

(In an instance where the snow protection hood (optional part) or the air outlet duct (eld-supplied) is mounted to the unit, a minimum gap of 1-15/16 inches (50mm) is required.)

- If the wall on the front side is over 59-1/16 inches (1,500mm) high, a clearance of (19-11/16 inches (500mm) + h2/2) is required for the front side.

- If the wall on the rear side is over 19-11/16 inches (500mm) high, a clearance of (11-13/16 inches (300mm) + h1/2) is required for the rear side.

- When the units are surrounded by walls on more than two sides, observe the necessary clearance as shown in the following illustrations.

- For walls on more than two sides, secure adequate clearance for service access space as shown in the

following illustrations.

- If the space between the unit and an obstacle above the unit is less than 59-1/16 inches (1,500mm) or the space above the unit is closed, set up the duct at the air outlet side in order to prevent a short circuit.

- Make sure there is enough space in case the unit needs to be serviced and any of the four sides would need to be opened or removed.

P5417009-rev.6

Page 23

1) Walls on Two Sides

Min. 19-11/16 (500) + h2/2

is adopted, a minimum clearance of 2 inches (50mm) is required.

Unit: inch (mm)

Top View

Unit: inch (mm)

19-11/16 (500) + h2/2

Unit: inch (mm)

19-11/16 (500) + h2/2

If units are installed adjacent to tall buildings where there are two open sides, the minimum rear side clearance must be at least 11-13/16 inches (300mm).

Single Installation Multiple / Serial Installation

No limit for side wall height.

Min. 3/8 (10)

Front Side

Top View

Min. 11-13/16 (300)

(Rear Side Space)

No limit for side wall height.

Min. 7-7/8 (200)

Front Side Front Side

Min. 15-3/4 (400)

Top View

Min. 11-13/16 (300)

(Rear Side Space)

: If using the snow protection hood (optional part) or the air outlet duct (field supplied) is adopted, a minimum clearance of 2 inches (50mm) is required.

2) Walls on Three Sides

Single Installation

Min. 11-13/16 (300) + h1/2

Min. 3/8 (10)

Front Side

Min.

No limit for side wall height.

Front Side Front Side

Min. 15-3/4 (400)

Top View

“”

This indicates the direction of the unit (Front Side) when installing the units.

Min. 11-13/16 (300)

(Rear Side Space)

Min.

No limit for side wall height.

Multiple / Serial Installation

Installation in the Same Direction Rear to Rear Installation

Min. 11-13/16 (300) + h1/2

Min. 3/8 (10)

Front Side

Min. 13/16 (20)

Front

Side

Min. 19-11/16 (500)

Min. 13/16 (20)

Min. 19-11/16 (500) + h2/2

Min. 3/8 (10)

(Side Space)

Top View

: If the snow protection hood (optional part) or the air outlet duct (field supplied)

Front Side

Front

Side

Min. 13/16 (20)

No limit for side wall height.No limit for side wall height.

Top View

Min. 35-7/16 (900)

Min. 13/16 (20)

Min. 19-11/16 (500) + h2/2

P5417009-rev.6

Page 24

3) Walls on Four Sides

Top View

No limit for side wall height

Min.

Top View

side wall height.

Min. (

Unit: inch (mm)

Top View

Unit: inch (mm)

Single Installation

No limit for side wall height.

Min. 11-13/16 (300) + h1/2

Min. 7-7/8 (200)

31-1/2

800)

Open

▼

Front Side

Multiple / Serial Installation

Installation in the Same Direction Rear to Rear Installation

Min. 7-7/8 (200)

Min. 31-1/2 (800)

Open

▼ ▼▼

Front Side

▼▼▼

Front Side

Min. 7-7/8 (200)

No limit for

Min. 19-11/16 (500) + h2/2

11-13/16 (300) + h1/2

Min. 7-7/8 (200)

Min. 35-7/16 (900)

No limit for side wall height.

Min. 31-1/2 (800)

Min. 19-11/16 (500) + h2/2

Open

Min. 7-7/8 (200)

(Side Space)

No limit for side wall height.

Min. 31-1/2 (800)

Open

Front Side

▼▼▼

▼

Min. 7-7/8 (200)

▼▼

Front Side

Min. 7-7/8 (200)

Min. 19-11/16 (500) + h2/2

Min. 7-7/8 (200)

Min. 63 (1600)

No limit for side wall height.

Min. 31-1/2 (800)

Min. 19-11/16 (500) + h2/2

Open

: Partly open a wall if the unit is surrounded by walls on four sides.

NOTICE:

Keep the upper side open to prevent mutual interference between the inlet and outlet air of each outdoor unit.

The gure indicates sufcient clearance around the outdoor units for operation and maintenance at typical

installation conditions as follows. [Operation Mode: Cooling Operation, Outside Temp.: 95

F (35oC)]

In the following situations when compared to the installation condition, an appropriate clearance dimension is required by calculating air ow current when * the outdoor unit ambient temperature is higher * a short circuit is likely to occur

For the multiple installation of units, one group will consist of a maximum of six outdoor units. Maintain a distance of 3.3 ft (1m) between each unit group.

One Group (Max. Six Outdoor Units)

Min. 3.3 ft

P5417009-rev.6

Page 25

5. Transportation and Installation Work

Wooden Skid Base

Corrugated Paper Frame

Plastic Bands

5.1 Transportation

Transport the product as close to the installation location as practical before unpacking. When using a crane, hang the unit according to the description on the outdoor unit packing slip.

● Donothangtheunitwiththeslingbeltsatthewoodenskidbase.

Sling Belt Position

CORRECT INCORRECT

Sling Belt

Long Hole

Wooden Skid Base

Sling Belt

● TransportationandStorage:

* The protective corrugated cardboard is not strong enough to resist rough handling. * Secure with two sling belts when hoisting the outdoor unit with a crane.

● TransportationandBandingWire:

* To protect the unit, do not remove

any packing.

* Donotstackorplaceanymaterial

on top of the product.

* Apply banding wire to both sides of

the packaged unit as shown at right.

Do not remove corrugated paper frame and plastic bands.

Attach four 5/8 inch (15mm) thick corrugated corner pads as shown.

P5417009-rev.6

Banding Wire

Page 26

Take special care when hanging or moving the outdoor unit because its center of mass is off-center and

Corrugated Paper Fram

(1,683)

Center

Front Side of Unit

unbalanced. See the diagram below.

Center of Gravity

inch (mm)

Voltage Model a b c d

72 38-3/8 (975) 21-1/4 (540) 24-5/8 (625) 12 (330)

66-1/4

of Gravity

208/230V

30-1/8

460V

(765)

96 48-5/8

120,144 48-5/8

168,192 64

72 38-3/8 (975) 21-7/16 (545) 25 (635) 12 (330)

96 48-5/8

120,144 48-5/8

168,192 64

(1,235) 25-13/16

(1,235)

(1,625)

(1,235)

(1,625)

(655) 26-9/16 (675) 13-3/8 (340)

27-3/8 (695) 25 (635)

32-7/8 (835) 24-3/16 (615)

26 (660)

26-15/16

(685) 13-3/8 (340)

27-3/8 (695) 25-3/8 (645)

33-1/16 (840) 24-5/8 (625)

12-13/16

Hanging Method

(1) Suspend the unit (with wooden skid base) in its packing with two sling belts as shown in Figure 5.1.

(2) Do not use banding wire. (3) Ensure that the unit is balanced. (4) Ensure safety while hoisting the unit gently to prevent the unit from tipping over.

Sling Belt

Do not remove corrugated paper frame and plastic bands.

Do not apply any force to surface. (Both Sides)

Wooden Skid Base

Carefully guide the sling belts through both side slots of the wooden skid base.

Voltage Model

Min. 6.6 ft (2m)

Angle of sling belt is more than 60o.

Top corners: Attach four 5/8 inch (15mm) thick corrugated corner pads as shown.

Bottom corners: Attach four 5/8 inch (15mm) thick cardboard pads on both sides at this point for protection.

208/230V

460V

72 527(239) 567(257)

96 598(271) 642(291)

120 730(331) 774(351)

144 732(332) 776(352)

168,192 860(390) 911(413)

72 534(242) 573(260)

96 611(277) 655(297)

120 734(333) 778(353)

Net

Weight

144 737(334) 781(354)

168,192 860(390) 911(413)

Gross

Weight

(325)

lbs (kg)

Figure 5.1 Hanging Unit on Wooden Skid Base for Transportation

(5) Hang the unit without a wooden skid base with two sling belts as shown in Figure 5.2.

Sling Belt

Min. 6.6 ft (2m)

Angle of sling belt is more than 60o.

Top corners: Attach four 5/8 inch (15mm) thick corrugated corner pads as shown.

Bottom corners: Attach four 5/8 inch (15mm) thick cardboard pads on both sides at this point for protection.

Sling Belt Position

Sling Belt

Slots

Sling Belt

Slots

Corrugated Paper Frame

Do not remove

CORRECT

INCORRECT

corrugated paper frame and plastic bands.

Do not apply any force to the surface. (Both Sides)

Carefully guide the sling belts through both side slots.

Figure 5.2 Hanging Unit without Wooden Skid Base

P5417009-rev.6

Page 27

When using a forklift, do not insert forks into

Forks

The slots on the unit side

Keep the appropriate interval (at least 1-15/16 inches (50mm)).

Touching the Unit

Not Touching the Unit

the slots at the unit side panels. The unit can sustain damage.

Do not apply excessive force to the squared

slots with forks or other materials. The bottom of the unit can become deformed. * Do not push the bottom base with forks. * Do not use a roller.

Do not apply excessive force. (Either Side)

Wooden Skid Base Removal Method

(1) Remove the hexagon head bolt using the ratchet wrench. (2) Suspend the unit from the wooden skid base in its packing with two sling belts.

(3) Ensure safety while hoisting the unit gently to prevent the unit from tipping over as shown in Figure 5.3.

Ratchet Wrench

Wrench

CORRECT

Outdoor Unit

INCORRECT

Outdoor Unit

oden Skid Base

Wooden Skid Base

Figure 5.3 Wooden Skid Base Removal Method

Duringtransportation,donotallowthebackrestoftheforklifttocomeintocontactwiththeunit.

Sudden forward movement on the forklift can cause damage to the unit heat exchanger.

Backrest

NOTICE

If transporting after unpacking, protect the unit with corrugated material, styrofoam, bubble pack, or a tarp.

P5417009-rev.6

Page 28

5.2 Handling of Outdoor Unit

Min. 3-15/1

Foundation

Unit: inch (mm)

Donotplaceorleaveanyforeignobjects:(cables,tools),insidetheoutdoorunitorcontrolmodule andverifythatnothingremainstherepriortoinstallationandtestrun.Damageandrecanresult

due to carelessness.

5.3 Installation Work

5.3.1 Concrete Foundations

(1) The height of the foundation should be more than 5-7/8 inches (150mm) above the ground.

(2) Provide adequate drainage around the foundation.

Details of Installing Anchor Bolt

Min. 3-1/8

(80)

3/16

2-3/4

(5)

(70) 11/16

(18)

(60)

2-3/8

(150)

Min. 5-7/8

Min. 3-15/16

Drainage (Example) (Width 3-15/16 (100) x Depth 13/16 (20))

(100)

Anchor Bolt (M12) (Field Supplied)

Nut (Field Supplied)

Washer (Field Supplied)

Seismic Plate (Accessory)

Vibration Proof Mat (Field Supplied)

Place the edge of the unit onto the vibration proof mat.

Filled Mortar Mortar Hole ( 3-15/16 (100) x Depth 5-7/8 (150))

Foundation

Drainage

Anchor Bolt (M12)

Seismic Plate (Accessory)

Nut (Field Supplied)

Washer (Field Supplied)

11/16 (18) (28-11/16 (729)) 11/16 (18)

2-3/4 (70) 2-3/4 (70)

Unit: inch (mm)

(24-5/8 (625))

30-1/8 (765)

* Provide a concrete foundation as shown below. * Do not use a concrete foundation such

as seen here. The footing for the outdoor unit can become deformed.

Front Side of Unit

Correct

(100)

Min. 3-15/16

(100)

The concrete foundations are installed along the outdoor unit width direction.

Foot

Foundation

Correct

Min. 3-15/16

(100)

The concrete foundations are installed along the outdoor unit depth direction.

Min. 3-15/16 (100) (Center of Outdoor Unit)

Foot

Foundation

Min. 3-15/16

(100)

Correct

Min. 3-15/16

(100)

Min. 3-15/16 (100) (Center of Outdoor Unit)

Foot

Foundation

Min. 3-15/16

(100)

The concrete foundations are installed to each corner of the outdoor unit. In this case, the foot of the outdoor unit may be deformed. Make sure to install the concrete foundation at the center of the outdoor unit.

Front Side of Unit

Incorrect

Foot

P5417009-rev.6

Page 29

(3) Install the outdoor unit in the front-rear and right-left direction horizontally. (Use a level.)

Right Side and Left Side

and Rear Side

(23)

(22)

27-1/16 (688)

5-3/8

(Hole for Anchor Bolt (M12))

(Pitch for Anchor Bolts)

(Hole for Anchor Bolt (M12))

(22)

(Pitch for Anchor Bolts)

5-3/8

26-5/16 (669) 26-5/16 (669)

(Hole for Anchor Bolt (M12))

(22)

(Pitch for Anchor Bolts)

5-3/8

37-5/16 (948)

Verify that the gradient slope in all four directions (front, rear, right, and left) falls within 3/8 inch (10mm).

Front Side

(4) Provide a strong, level, and stable foundation so that:

a. The outdoor unit does not lean to one side. b. Sound from inside unit are inaudible. c. The outdoor unit remains stable and upright in the face of strong winds and seismic events.

(5) When installing the outdoor unit, secure the unit with anchor bolts and eld-supplied vibration-proof

mats. Refer to Figure 5.4 for the location of holes for anchor bolts.

Unit: inch (mm)

72 Model

Min. 3-1/8

Vibration Proof Mat (3 pieces of each

front and rear)

4 - 1-1/2 (38) x 9/16 (15) Long Hole

(80)

(136)

(80)

Min. 3-1/8

(Pitch for Anchor Bolts)

(136)

7/8

28-11/16 (729)

7/8

96, 120 and 144 Model

(136)

(80)

Min. 3-1/8

(80)

Vibration Proof Mat (3 pieces of each

front and rear)

4 - 1-1/2 (38) x 9/16 (15) Long Hole

(Pitch for Anchor Bolts)

168 and 192 Model

Min. 3-1/8

Vibration Proof Mat (3 pieces of each

front and rear)

(137)

(80)

Min. 3-1/8

(80)

(Pitch for Anchor Bolts) (Pitch for Anchor Bolts)

6 - 1-1/2 (38) x 9/16 (15) Long Hole

(137)

(23)

28-11/16 (729) 7/8

7/8

(136)

(23)

28-11/16 (729) 7/8

7/8

P5417009-rev.6

Figure 5.4 Positions of Anchor Bolts

Page 30

5.3.2 Condensate Treatment

Not Used

Drain Adaptor Position (Optional Part)

(Knockout Square Hole)

Drain Adaptor Position (Optional Part)

(73)

(283)

Not Used

Drain Adaptor Position (Optional Part)

(Knockout Square Hole)

Condensation is discharged during heating and defrosting operations. (Rain water is also discharged.) Comply with the following conditions.

(1) Choose a place where good drainage is available, or provide a drainage ditch.

(2) Do not install the unit over walkways. Condensation can spill onto people.

If installing the unit in such a place, utilize the additional condensation drainage pan.

(3) When a drain pipe is necessary for the outdoor unit, use the optional drain adaptor: (DBS-TP10A).

Do not use the drain adaptor in a cold area. Condensate in the drain pipe can freeze, resulting in a fractured pipeline.

NOTICE: Even when the drain adaptor is used, moisture may drain slightly from screw holes. Provide a second condensation drainage pan under the outdoor unit as necessary.

Unit: inch (mm)

Model Dimension

96, 120 and 144

Not Used

5-13/16

(147)

9-7/16

(239)

9-1/16

(230)

11-1/8

(127)

2-7/8

28-3/8 (720)

(127)

14-3/4

(374)

20-1/2

(520)

2-7/8

(73)

9-1/16

(230)

Refrigerant Piping Outlet (High/Low Pressure Gas and Liquid) (Knockout Square Hole)

4-1/2 (115)

4-1/2

Drain Hole (φ1 (26) x 2 Positions)

(115)

(80)

3-1/8

(382)

15-1/16

Refrigerant Piping Outlet (Low Pressure Gas)

(87)

(Knockout Square Hole)

3-7/16

Refrigerant Piping Outlet (High/Low Pressure Gas and Liquid)

(152)

Drain Hole (φ1 (26) x 4 Positions)

(80)

3-1/8

(483)

(87)

3-7/16

Refrigerant Piping Outlet (Low Pressure Gas) (Knockout Square Hole)

168 and 192

Not Used

5-13/16

(147)

11-1/8

(283)

13-3/8

(339)

18-3/16

(462)

(127)

2-7/8

(73)

13-3/8

(339)

Refrigerant Piping Outlet (High/Low Pressure Gas and Liquid)

9-3/8 (238)

Drain Hole (φ1 (26) x 4 Positions)

(80)

3-1/8

(635)

(110)

4-5/16

Refrigerant Piping Outlet (Low Pressure Gas) (Knockout Square Hole)

P5417009-rev.6

Page 31

Drain Adaptor (Optional Parts)

•

Use a drain adaptor as a condensation pipe connection.

Then use an outdoor unit bottom base as a condensation drainage pan.

Name Model

Drain Adaptor DBS-TP10A

Component Formation of Drain Adaptor

Model Parts Name Material / Color Qty. Application

Drain Adaptor PP / Black 2 Connecting for Drain Piping

DBS-TP10A

Drain Cap PP / Black 2 Cover for Drain Hole

Rubber Cap CR / Black 4 Sealing for Adaptor and Cap

P5417009-rev.6

Page 32

6. Refrigerant Piping Work

•The pressure for this product is 601 psi (4.15MPa). The pressure required for refrigerant R410A is

1.4 times higher than for the refrigerant R22. Therefore, the refrigerant pipes for R410A must be

thickerthanforR22.Makesuretousespeciedrefrigerantpipes.Otherwise,therefrigerantpipes

may rupture due to excessive refrigerant pressure. Pay close attention to the pipe thickness when using copper refrigerant pipes. The thickness of copper refrigerant pipe differs depending on its material.

•Checktoensurethatnopressureexistsinsidethestopvalvebeforeremovingtheange.

•Ensure that the corresponding pipe connections for the liquid, low pressure gas and high/low

pressuregaspipingareproperlyconnectedtotheequipment,asspeciedintheinstallation

instructions.

•When handling the refrigerant, be sure to wear leather gloves to prevent injuries.

P5417009-rev.6

Page 33

6.1 Piping Materials

Pressure Reducing Valve

NOTE: Do not cover the outlet. If the inner pressure exceeds atmospheric pressure a pinhole will result and refrigerant gas will leak from the brazed fitting.

the pipe interior.

(1) Obtain locally-supplied copper pipes. (2) Use copper pipe for refrigerant piping. (3) Pay close attention to pipe thickness. (4) Use clean copper pipes. Make sure there is no dust or moisture inside the pipes.

Do not use any tools which produce a lot of metal shavings such as a saw or a grinder.

(5) Take special care to prevent contamination or moisture settling on interior pipe surfaces during piping

work.

(6) Avoid performing the piping connection work for outdoor unit in the rain.

Cautions for Refrigerant Pipe Ends

When installing pipe through the wall, secure a cap at the end of the pipe.

Correct

HoleHole

Attach a cap or vinyl tape.

Do not place the pipe directly on the ground.

CorrectIncorrect Incorrect

Attach a cap or vinyl tape.

Correct Incorrect

Rain water can enter.

Attach a cap or vinyl bag with rubber band.

Brazing Work

(1) Brazing work must be performed by an authorized installer in order to prevent any problems.

(2) For pipe connections, complete non-oxidation brazing with a nitrogen purge. If brazing the pipes

without the nitrogen, a large amount of oxidized scaling is generated in the piping. This oxidized scaling can cause clogging inside the expansion valve, solenoid valve, accumulator, and compressor, which can prevent the unit from operating properly.

Do not use the eld-supplied antioxidant which can corrode pipes and degrade the refrigerant oil.

● Make sure to use nitrogen. Nitrogen gas pressure shall be 2.9 psi (0.02 MPa) or less.

● Make sure to use the pressure-reducing valve.

● Do not use eld-supplied antioxidant.

(Stop Valve)

NOTICE:

To avoid oxidation and scaling, perform brazing at the appropriate temperature.

P5417009-rev.6

Brazing Part

Nitrogen Gas

Piping Connection on-site

Nitrogen Gas Pressure < 2.9 psi (0.02 MPa)

ValvePipe

(1/4 inch)

Cover the gap with tape or a rubber plug to prevent air from entering

Nitrogen Gas

Page 34

Cautions for Piping Connection Work

Use two wrenches as shown.

Apply Refrigerant Oil.

(1) Verify that there are no scratches, metal shavings, gaps, or deformations at the ared end before

connecting pipe to the system.

(2) Before tightening the are nut, apply a small amount of oil (eld-supplied) to the outside of the are.

(Do not apply any oil to the are face or the threads.) Tighten the liquid pipe are nut to the specied torque while using a back-up wrench to prevent damage to the unit. Ensure that the are connections

are leak free upon completion of the work.

NOTE:

Refrigerant oil is eld-supplied. [Ethereal Oil: FVC68D (Idemitsu Kousan Co. Ltd.)]

Do not apply refrigerant oil to exterior flared surfaces.

(3) Be sure to use the accessory are nuts for indoor unit connections.

To tighten the torque for liquid stop valve, refer to Section 6.2.1 “Stop Valve” of the tightening torque table.

Required Tightening Torque

Pipe Size Tightening Torque

1/4 inch (6.35 mm) 10.3 - 13.3 ft·lbs (14 - 18 N·m)

3/8 inch (9.52 mm) 25.1 - 31.0 ft·lbs (34 - 42 N·m)

1/2 inch (12.7 mm) 36.1 - 45.0 ft·lbs (49 - 61 N·m)

5/8 inch (15.88 mm) 50.2 - 60.5 ft·lbs (68 - 82 N·m)

3/4 inch (19.05 mm) 73.8 - 88.5 ft·lbs (100 - 120 N·m)

(4) When the temperature and humidity inside the ceiling exceed 80oF (27oC)/RH80%, apply additional

insulation of approximately 3/8 inch (10mm) in thickness to the accessory insulation. The insulation prevents the formation of condensation on the surface of the insulation (refrigerant pipe only).

(5) Perform the airtight test at (601 psi (4.15MPa) for the test pressure).

(6) Perform cold insulation work by wrapping tape around ared and reducer connections. Also, insulate

all the refrigerant pipes.

(7) Connect the indoor/outdoor units with refrigerant pipe. Secure the pipe to prevent it from coming into

contact with weak structures such as a wall or ceiling. Otherwise, noise will occur due to vibration of the pipe.

P5417009-rev.6

Page 35

Example for Pipe Support

Secure Liquid Pipes, Low Pressure Gas Pipes and High/Low Pressure Gas Pipes

Distortion and deformation of the pipes can occur.

Precaution for Installing and Securing Piping

When assembling pipes onsite with hidden elbow or socket joints, provide a service access door to

facilitate close-up examination of interconnecting components.

CORRECT

Outdoor Unit

Installing Pipes: Install at Appropriate Intervals

Treatment for Section of Fire Prevention

within + 15

High/Low Pressure Gas Pipe

Model: (H,Y)VAHR_B(3,4)2S

Outdoor Unit Capacity

Indoor Unit

Low Pressure Gas Pipe

Installing Pipes

Liquid Pipe

Multi-Kit

Install Horizontally

NOTICE: Due to varying chemical properties, gas and liquid pipes

will expand or contract at different rates due to changing refrigerant temperatures. Do not fasten gas and liquid pipes together with tape.

INCORRECT

Table 6.1 Pipe Sizes of Outdoor Unit

inch (mm)

(MBH)

Gas

Low Pressure High/Low Pressure

Liquid

72, 96 7/8 (22.2) 3/4 (19.05) 1/2 (12.7)

120 1-1/8 (28.58) 7/8 (22.2) 1/2 (12.7)

144 - 192 1-1/8 (28.58) 7/8 (22.2) 5/8 (15.88)

216 1-1/8 (28.58) 7/8 (22.2) 3/4 (19.05)

240 - 360 1-3/8 (34.93) 1-1/8 (28.58) 3/4 (19.05)

384 - 432 1-5/8 (41.28) 1-3/8 (34.93) 3/4 (19.05)

Table 6.2 Pipe Sizes of Indoor Unit

Indoor Unit Capacity

(MBH)

Gas Liquid

6 - 15 1/2 (12.7) 1/4 (6.35)

18 - 54 5/8 (15.88) 3/8 (9.52)

60 - 72 3/4 (19.05) 3/8 (9.52)

P5417009-rev.6

96 7/8 (22.2) 3/8 (9.52)

inch (mm)

Page 36

6.2 Piping Connection Work

Stop Valve for Liquid Valve

Cut Here

Comply with the restrictions for refrigerant piping (permissible length, height difference) in Sections 6.5 “Piping Work Conditions” and “Piping Branch Restriction.” If not, the outdoor unit can become damaged or fail. The stop valves are closed completely (factory-setting) when refrigerant piping connections are performed. Do not open these stop valves until all the refrigerant pipes are connected, pressure tested, and vacuumed.

6.2.1 Stop Valve

Gas Valve

(1) Make sure that all the stop valves are closed completely. (2) Connect the charging hose to the service port and release the gas inside the pipe. (3) Cut the end of the closing pipe and ensure that no residual gas or oil exists inside the gas pipe. (4) Remove any combustible material such as stop valve cover (cardboard) from unit before using a torch.

(Please see close pipe drawing below.)

(5) Remove the closing pipe from the brazing portion with a torch. Be careful that the ame doesn’t

damage the stop valve.

Service Port

Stop Valve for Gas Valve

Stop Valve for Liquid Valve

(High/Low Pressure)

Stop Valve for Gas Valve (Low Pressure)

Stop Valve Cover (Cardboard) (Read the precautions.)

Heat Exchanger Fin

Heat Exchanger

Stop Valve for Gas Pipe (Body) (High/Low Pressure)

Stop Valve for Gas Pipe (Body) (Low Pressure)

Field-Work Side

Metal Plate for

Cutting Portion (φ1/4(6.35) Pipe)

End of Closing Pipe (φ1/4(6.35))

Closing Pipe

Protection

Closing Pipe

Figure 6.1

Valve Stay

Torch

● Removegasinsidetheclosingpipebeforethebrazingworkisperformed. Ifthebrazingllermetalmeltswithresidualgasinside,thepipewillexplodeandinjuriescanresult.

● Donotexposesurroundingpartsandtheoilreturnpipeofthecompressortoameswhenatorch isused.Iftheoilreturnpipeisexposedtothere,hightemperatureoilwillspurtandcauseare

or injury.

P5417009-rev.6

Page 37

Liquid Valve

Do not put wrenches here.

Flare Nut

Access Port for Service

Refrigerant Pressure

Hexagonal Wrench

Access Port for Service Only the charging hose can be connected.

Tighten the are nut for the liquid stop valve according to the following torque. If excessive force is applied to the are nut, refrigerant leakage may occur from the stop valve. (To prevent leakage when removing

and connecting pipe, place two wrenches at the positions indicated in the following diagram.

Flare Nut

Position both wrenches here.

● The details of stop valves are as follows.

Gas Valve

Cap Tightening Torque:

36.1 - 42.8 ft·lbs (49.0 - 58.0 N·m)

Stop Valve Counterclockwise...Open

Clockwise...............Close

Tightening Torque: (a)

CBA

Flare Nut

Tightening Torque:

6.6 - 10.3 ft·lbs (9.0 - 14.0 N·m)

Tightening Torque ft·lbs (N·m)

Model

96 - 192 18.4 - 22.9 (25.0 - 31.0)

Model

Tightening Torque

ft·lbs (N·m)

72 24.3 - 31.0 (33.0 - 42.0)

96 - 144 36.9 - 45.7 (50.0 - 62.0)

168, 192 50.2 - 62.0 (68.0 - 84.0)

Stop Valve (a)

High/Low Pressure Low Pressure

13.3 - 16.2 (18.0 - 22.0)

Valve

Liquid Valve

Cap Tightening Torque: (b)

Hexagonal Wrench To open or close stop valve

Stop Valve Counterclockwise...Open

Clockwise...............Close

Tightening Torque: (c)

O-ring

Refrigerant Piping

Tightening Torque ft·lbs (N·m)

Model Cap (b) Stop valve (c) Flare Nut (d)

72 24.3 - 31.0 (33.0 - 42.0) 5.2 - 6.6 (7.0 - 9.0) 24.3 - 31.0 (33.0 - 42.0)

96 - 144 24.3 - 31.0 (33.0 - 42.0) 5.2 - 6.6 (7.0 - 9.0) 36.9 - 45.7 (50.0 - 62.0)

168, 192 36.9 - 45.7 (50.0 - 62.0) 6.6 - 8.1 (9.0 - 11.0) 50.2 - 62.0 (68.0 - 84.0)

Tightening Torque:

10.3 - 13.3 ft·lbs (14.0 - 18.0 N-m)

Refrigerant Pressure

Flare Nut Tightening Torque: (d)

● Donotapplyexcessiveforcetothestopvalveafterfullyopeningit.

● Atthetestrun,fullyopenthestopvalve.Ifitisnotfullyopened,thedeviceswillbedamaged.

P5417009-rev.6

Page 38

6.2.2 Piping Connection Method

For Pipes from Bottom Base

Low Pressure Gas Pipe

Piping Cover

Liquid Pipe

Gas Pipe

For Pipes from Front Side Piping Cover

Perform the piping connection work for each outdoor unit.

NOTICE: Ensure that the refrigerant pipe is connected to the same refrigerant system.

● Firmly secure the pipe in order to avoid vibration, excessive force on the valve, and noise.

(1) Piping can be installed from the bottom base and the front piping cover.

For vibration protection, properly secure pipe connections and check that no excessive force is applied

to the stop valve.

(2) Follow the installation procedures in Section 6.2.1.

(3) Connect the piping in accordance with Figures 6.1 and 6.2 on the following page.

(4) Seal the gap between the bottom base or front piping cover and pipes with the insulation.

Liquid Pipe

High/Low Pressure Gas Pipe

Seal this gap with insulation (field-supplied).

Low Pressure Gas Pipe

High/Low Pressure

P5417009-rev.6

Page 39

● Prepare refrigerant piping for assembly. The following examples illustrate a small cabinet.

Square Hole of Piping Cover (Knockout Hole)

(φ1-5/16 (33) Knockout Hole)

Refer to Figure 6.2 for the position for piping connections.

Unit: inch (mm)

Refrigerant Low Pressure Gas Piping Connection A

Refrigerant High/Low Pressure Gas Piping Connection B

Refrigerant Liquid Piping Connection C

Piping Cover

D E

J Refrigerant Liquid Piping Connection

K Refrigerant Low Pressure Gas Piping Connection

L Refrigerant High/Low Pressure Gas Piping Connection

I Refrigerant High/Low Pressure Gas Piping Connection

G Refrigerant Liquid Piping Connection

H Refrigerant Low Pressure Gas Piping Connection

Model

Pressure

120

(28.58)

144

(28.58)

168

(28.58)

192

(28.58)

Low

7/8

(22.2)

7/8

(22.2)

1-1/8

Gas

High/Low

Pressure

(19.05)

(22.2)

Detail of Piping Cover

Power Supply Wiring Outlet (φ1-3/4 (43.7) Knockout Hole)

2-9/16

(65)

(100)

3-15/16

9-3/4 (248)

9-15/16 (253)

Communication Cable Outlet

(92)

3-5/8

(127)

High/Low Pressure Gas Piping and Liquid Piping Outlet (Knockout Square Hole)

Liquid A B C D E F G H I J K L M N P Q

3/4

1/2

7/8

3/8

10-3/8

13-1/16

16-5/16

3/4

7/8

(12.7)

1/2

(12.7)

1/2

(12.7)

5/8

(15.88)

5/8

(15.88)

5/8

(15.88)

(22.2)

(25.4)

1-1/8

(28.58)

(22.2)

7/8

(22.2)

7/8

(22.2)

(9.52)

1/2

(12.7)

5/8

(15.88)

(264)

6-7/8 (174)

6-15/16

(177)

(331)

9-7/16

(239)

9-7/16

(239)

(414)

12-11/16

(322)

12-11/16

(322)

10-9/16

(268)

10-3/8

(263)

10-3/16

(259)

Power Supply Wiring Outlet (φ1-3/8 (34.5) Knockout Hole)

Power Supply Wiring Outlet (φ7/8 (22.2) Knockout Hole)

Low Pressure Gas Piping Outlet (Knockout Square Hole)

6-7/16

(163)

6-5/16

(160)

6-5/16

(160)

4-5/8

6-7/16

(163)

(117)

6-7/16

4-7/16

(163)

(112)

6-7/16

5-3/16

(163)

(132)6(152)6(153)

5-3/16

(131)

5-1/8 (130)

5-3/16

(131)

5-3/16

(131)

9-7/16

(240)

5-13/16

(147)

5-13/16

(147)

7-5/16

(185)

3-5/8

(92)

3-5/8

(92)

8-7/8 (225)12(305)

5-3/16

8-3/8

(132)

(212)

5-3/16

8-3/8

(132)

(212)

P5417009-rev.6

Figure 6.2 Refrigerant Piping Connection and Wiring Outlet

Page 40

● Details of Stop Valve Piping Connections

Stop Valve

(for Low Pressure Gas)

A (for Liquid Line)

Pressure Gas Line)

Stop Valve

(for Low Pressure Gas)

Gas Line)

Liquid Pipe (Field Supplied)

Stop Valve

(for Low Pressure Gas)

Gas Line)

Liquid Pipe (Field Supplied)

Stop Valve

(for Low Pressure Gas)

Gas Line)

A (for Liquid Line)

Stop Valve

(for Low Pressure Gas)

Liquid Pipe (Field Supplied)

Be sure to remove rst the closing pipe of the gas stop valve. Refer to Figure 6.1 for the aring work. Refer to Section 3.1 “Factory-Supplied Accessories” for the details of the accessory pipes.

72 Model 96 Model

Stop Valve (for Liquid)

Flaring

ccessory Pipe

90° Elbow B (Field Supplied)

90° Elbow A (Field Supplied)

Accessory Pipe (for High/Low

Stop Valve (for Liquid)

Flaring

90° Elbow A (Field Supplied)

Gas Pipe (Field Supplied)

(for High/Low Pressure Gas)

Stop Valve

90° Elbow A (Field Supplied)

Gas Pipe (Field Supplied)

120 Model 144 Model

(for High/Low Pressure Gas)

Stop Valve

90° Elbow B (Accessory)

Accessory Pipe (for Low Pressure

168, 192 Model

(for High/Low Pressure Gas)

Stop Valve (for Liquid)

Flaring

90° Elbow B (Field Supplied)

Accessory Pipe (for High/Low Pressure Gas Line)

(for High/Low Pressure Gas)

Stop Valve (for Liquid)

Flaring

ccessory Pipe

90° Elbow A (Field Supplied)

Gas Pipe (Field Supplied)

Stop Valve

90° Elbow B (Accessory)

Accessory Pipe (for Low Pressure

Stop Valve

90° Elbow B (Accessory)

Accessory Pipe (for Low Pressure

Stop Valve (for Liquid)

Flaring

90° Elbow A (Field Supplied)

Gas Pipe (Field Supplied)

(for High/Low Pressure Gas)

Stop Valve

90° Elbow A (Field Supplied)

Gas Pipe (Field Supplied)

P5417009-rev.6

Page 41

6.3 Piping Work between Outdoor Units

Piping Connection Kit 1 Piping Connection Kit 2

CAB

Upstream Side

Piping Connection Kit 1 Piping Connection Kit 2

Maintain a straight-line distance of 19-1 (500mm) or more for piping after installing the piping connection kit.

Indoor Unit Side

The refrigerant oil stagnates when the unit stops.

Indoor Unit Side

(300mm)

Oil Trap

(300mm)

-13/16 inches

(300mm)

< Side View of Outdoor Unit >

Select the pipe size according to Section 6.4 “Piping Size between Outdoor Units”.

For refrigerant piping between multiple outdoor units, use the optional piping connection kit.

The arrangement for outdoor units should be determined depending on the piping direction when the refrigerant piping work and installation work are planned. When the outdoor unit is installed, perform the installation work according to the following restrictions.

(1) Piping length between piping connection kit 1 and each outdoor unit should be

LA < LB < LC < 32 ft (10m). Maintain a straight-line distance of 19-11/16 inches (500mm) or more for pipes after the piping connection kit 1.

Max. lift difference between outdoor unit is 3-15/16 inches

Outdoor

(100mm).

Unit

Indoor Unit Side

Outdoor

Unit

Outdoor

Unit

Outdoor

Unit

1/16 inches

Outdoor

Unit

Outdoor

Unit

Indoor Unit Side

(2) Place the piping connection kit lower than the outdoor unit piping connection.

When the piping connection kit is installed higher than the outdoor unit piping connection, maintain a maximum clearance of 11-13/16 inches (300mm) between the piping connection kit and the bottom of the outdoor unit. Also, install an oil trap (minimum 7-7/8 inches (200mm)) between the piping connection kit and the outdoor unit.

Min. 7-7/8 inches (200mm)

Max. 11-13/16 inches

No trap is required.

Min. 7-7/8 inches (200mm)

Max. 11-13/16 inches

Min. 7-7/8 inches (200mm)

Max. 11

P5417009-rev.6

Page 42

(3) When pipe length between outdoor units is 6.6 ft (2m) or more, an oil trap for the gas pipe should be

NOTICE

Refrigerant oil accumulates in the pipe.

Indoor Unit Side

Connection Kit

Outdoor Unit

Min. 19-1 (500mm)

Outdoor Unit Outdoor Unit

installed so that no accumulation of refrigerant oil can occur.

● Less than 6.6 ft (2m) ● 6.6 ft (2m) or More

Less than

6.6 ft (2m)

Indoor Unit Side

Oil Trap Min. 7-7/8 inches (200mm)

Less than

6.6 ft (2m)Less than 6.6 ft (2m) Less than 6.6 ft (2m)

Less than 32 ft (10m)

Oil Trap Min. 7-7/8 inches (200mm)

(4) Place the outdoor unit pipe horizontally or with the pipe slanted downward towards the indoor unit side

so that accumulation of refrigerant oil does not occur in the pipe.

Indoor Unit Side

(5) For servicing, if the pipe is installed in front of the outdoor unit, make sure a minimum clearance of

19-11/16 inches (500mm) between the outdoor unit and each piping connection kit. (When the compressor is replaced, ensure a minimum clearance of 19-11/16 inches (500mm).)

1/16 inches

Piping

(6) Direction of Piping Connection Kit

Place the piping connection kit so it is parallel to the ground (the slope must be within +15o) as shown

in the gure.

within + 15

The refrigerant system may be damaged if the slope of the piping connection kit exceeds +15

P5417009-rev.6

Page 43

● Construction Example

(Field-Supplied)

The following gures show examples of a heat recovery system (three units in combination).

Regarding the piping work for combining the units, refer to the “Installation and Maintenance Manual”

enclosed in the piping connection kit package. Refer to the following gure to perform the piping

connections between the outdoor units.

Piping from Front Side Piping Cover

High/Low Pressure Gas Piping (Field-Supplied)

Liquid Piping (Field-Supplied)

Low Pressure Gas Piping (Field-Supplied)

Piping Connection Kit 1 (Low Pressure Gas)

Piping Connection Kit 1 (High/Low Pressure Gas)

Piping Connection Kit 1 (Liquid)

Accessory Pipe

(L-Shape)

Piping Connection Kit 2 (Low Pressure Gas)

Accessory Pipe

(L-Shape)

Piping Connection Kit 2 (High/Low Pressure Gas)

Keep the same heights when removing the gas piping and the liquid piping from the piping cover.

Indoor Unit A

Piping Connection Kit 2 (Liquid)

Accessory Pipe

Low Pressure Gas Piping (Field-Supplied)

High/Low Pressure Gas Piping (Field-Supplied)

Liquid Piping

● Perform the piping connections between outdoor units according to the gure.

Indoor Unit B

Indoor Unit C

Foundation

Accessory Pipe

Foundatio

Piping from Bottom Base

Piping Connection Kit 1 (Liquid)

Liquid Piping (Field-Supplied)

High/Low Pressure Gas Piping (Field-Supplied)

Low Pressure Gas Piping (Field-Supplied)

Piping Connection Kit 1 (High/Low Pressure Gas)

Piping Connection Kit 1 (Low Pressure Gas)

Accesory Pipe

(Z-Shape)

Accesory Pipe

(L-Shape)

Piping Connection Kit 2 (High/Low Pressure Gas)

Piping Connection Kit 2 (Low Pressure Gas)

Connecting Pipe (Attaching to Piping Connection Kit)

Connecting Pipe (Field Supplied)

Outdoor Unit A

Piping Connection Kit 2 (Liquid)

Accesory Pipe

(Z-Shape)

Accesory Pipe

(L-Shape)

High/Low Pressure

Liquid Piping

Gas Piping

Min. 5-7/8 inches (Min. 150mm)

Min. 19-11/16 inches

(Min. 500mm)

● Perform the piping connections between outdoor units according to the gure.

Outdoor Unit B

Base

Outdoor Unit C

Low Pressure Gas Piping

P5417009-rev.6

Page 44

6.4 Piping Sizes between Outdoor Units

To Indoor Units

Outdoor Unit

To Indoor Units

Piping Connection Kit

Outdoor Unit A Outdoor Unit B

To Indoor Units

Piping Connection Kit

Outdoor Unit AOutdoor Unit B

Install the outdoor unit and piping connections in accordance to whatever is applicable to your situation. Refer to the table for the outdoor unit model, the piping connection kit model, and the pipe diameter.

Base Unit

Refrigerant Piping

inch (mm)

Model 72 96 120 144 168 192

Piping Size a

Low Pressure Gas

High/Low Pressure

Gas

Liquid

7/8

(22.2)

3/4

(19.05)

1/2

(12.7)

7/8

(22.2)

3/4

(19.05)

1/2

(12.7)

1-1/8

(28.58)

7/8

(22.2)

1/2

(12.7)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

Two Unit Combination

The following drawing is for a 288 model combination.

(Indoor Unit on Left Side) (Indoor Unit on Right Side)

Combination Unit

Piping Connection Kit MC-NP21SX

Piping Size

Model 216 240 264 288 312 336 360

Outdoor Unit A 144 120 144 144 168 192 192

Outdoor Unit B 72 120 120 144 144 144 168

Low Pressure Gas

High/Low Pressure

Gas

Liquid

Low Pressure Gas

High/Low Pressure

Gas

Liquid

Low Pressure Gas

High/Low Pressure

Gas

Liquid

1-1/8

(28.58)

7/8

(22.2)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

7/8

(22.2)

3/4

(19.05)

1/2

(12.7)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

1/2

(12.7)

1-1/8

(28.58)

7/8

(22.2)

1/2

(12.7)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

1/2

(12.7)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

inch (mm)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

P5417009-rev.6

Page 45

Install the outdoor unit and piping connections in accordance to whatever is applicable to your situation.

Connection Kit 1

Connection Kit 2

Outdoor Unit A Outdoor Unit B Outdoor Unit C

Connection Kit 1

Connection Kit 2

Outdoor Unit AOutdoor Unit BOutdoor Unit C

Refer to the table for the outdoor unit model, the piping connection kit model, and the pipe diameter.

Three Unit Combination

The following drawing is for a 432 model combination.

(Indoor Unit on Left Side) (Indoor Unit on Right Side)

To Indoor Units

Piping

Model 384 408 432

Outdoor Unit A 144 144 144 Combination Unit

Outdoor Unit B 120 144 144

Outdoor Unit C 120 120 144

Piping Connection Kit MC-NP30SX

Low Pressure Gas

High/Low Pressure

Gas

Liquid

Low Pressure Gas

High/Low Pressure

Gas

Liquid

Low Pressure Gas

Piping Size

High/Low Pressure

Gas

Liquid

Low Pressure Gas

High/Low Pressure

Gas

Liquid

Low Pressure Gas

High/Low Pressure

Gas

Liquid

1-5/8

(41.28)

1-3/8

(34.93)

3/4

(19.05)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

1/2

(12.7)

1-1/8

(28.58)

7/8

(22.2)

1/2

(12.7)

1-5/8

(41.28)

1-3/8

(34.93)

3/4

(19.05)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

1/2

(12.7)

Piping

To Indoor Units

inch (mm)

1-5/8

(41.28)

1-3/8

(34.93)

3/4

(19.05)

1-3/8

(34.93)

1-1/8

(28.58)

3/4

(19.05)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

1-1/8

(28.58)

7/8

(22.2)

5/8

(15.88)

P5417009-rev.6

Page 46

6.5 Piping Size and Multi-Kit Selection

For selecting the pipe sizes 1 between the outdoor unit and the piping connection kit, and the pipe size 2

between the piping connection kits A, refer to Section 6.4 “Piping Size between Outdoor Units.”

Maintain a straight-line distance of 19-11/16 inches (500mm)

or more for piping after the piping connection kit.

Indoor

Unit

Indoor

Unit

Indoor

Unit

(Exclusive Use of Cooling Operation)

Outdoor

Unit

Outdoor

Indoor

Unit

Indoor

CH-M

CH CH

Unit

Indoor

Unit

Indoor

Unit

Terminal

Indoor Unit

Indoor

Unit

Outdoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

: High/Low Pressure Gas Pipe, Low Pressure Gas Pipe, Liquid Pipe

: Gas Pipe, Liquid Pipe

: Low Pressure Gas Pipe, Liquid Pipe

CH : Change-Over Box (Single Branch Type)

CH-M : Change-Over Box (Multiple Branch Type)

Low Pressure Gas Pipe

High/Low Pressure Gas Pipe

Gas Pipe

6 7

NOTE: Change-over box (single branch type) is not connected to liquid pipe.

Three Pipes Portion

Liquid Pipe

Gas Pipe

Liquid Pipe

Two Pipes Portion

NOTE: Refer to page 42 “ E Change-Over Box” for details of branch number.

High/Low Pressure Gas Pipe

Low Pressure Gas Pipe

Three Pipes Portion

Liquid Pipe

Two Pipes Portion

CH-M

• • •

Two Pipes Portion

6 7

Gas Pipe

Liquid Pipe

Indoor

Unit

Header Branch

Indoor

Unit

Indoor

Unit

Indoor

If header branch is used instead of multi-kit.

Header Branch

Indoor

Unit

NOTE: Header branch cannot be connected to upstream or downstream piping of change-over box (multiple branch type).

CH CH

Indoor

Unit

777

Unit

P5417009-rev.6

Page 47

Multi-Kit (Optional Parts)

Line Branch

Branch using Multi-Kit (MW Model)

“Multi-Kit after First Branch” is larger than B “Multi-Kit for First

Branch”, use the same model as

Multi-Kit for First Branch

Outdoor Unit Capacity

(MBH)

72 - 120 MW-NP452X3 144 - 192 MW-NP562X3 216 - 432 MW-NP902X3

NOTE: The change-over box (multiple branch type) or header branch

can also be used instead of the multi-kit as rst branch.

Model

“Multi-Kit for First Branch”.

Multi-Kit after First Branch (Three Pipes Portion)

Total

Indoor Unit Capacity

Model

(MBH)

< 47 MW-NP142X3

48 - 95 MW-NP282X3

96 - 143 MW-NP452X3 144 - 215 MW-NP562X3

> 216 MW-NP902X3

*1 X2 type is to be used in place of X3 type:

The piping kits for X2 model number MW-NP142X2, MW-NP282X2, MW-NP452X2, MW-NP562X2 and MW-NP902X2 are to be used in place of the piping kits for the X3 model numbers, MW-NP142X3, MW-NP282X3, MW-NP452X3, MW-NP562X3 and MW-NP902X3, as noted.

Multi-Kit after First Branch (Two Pipes Portion)

Total

Indoor Unit Capacity

Model

(MBH)

< 95 MW-NP282A3

96 - 143 MW-NP452A3

144 - 215 MW-NP692A3

> 216 MW-NP902A3

*2 A2 type is to be used in place of A3 type:

The piping kits for A2 model number MW-NP282A2, MW-NP452A2, MW-NP692A2 and MW-NP902A2 are to be used in place of the piping kits for the A3 model numbers, MW-NP282A3, MW-NP452A3, MW-NP692A3 and MW-NP902A3, as noted.

P5417009-rev.6

Page 48

Change-Over Box

● Single Unit for 1 Branch

Indoor Unit

Maximum

Connection Capacity

for 1 Branch

Model

Indoor Unit Side

Branch Number

Indoor Unit

Maximum

Connection Capacity

COBS048B21S 1 ≤ 54 ≤ 54 COBS048B22S 1 ≤ 54 ≤ 54 COBS096B21S 1 ≤ 96 ≤ 96 COBS096B22S 1 ≤ 96 ≤ 96 COB04M132B22S 4 ≤ 132 ≤ 96 COB08M264B22S 8 ≤ 264 ≤ 96 COB12M264B22S 12 ≤ 264 ≤ 96

*3 Upto two 60, 72 or 96 type indoor units can be connected to the change-over box within the “Indoor Unit Maximum

Connection Capacity” shown in above table.

Make sure to increase the pipe connection size by using the appropriate accessory pipe.

● Multiple Units for 1 Branch

Indoor Unit

Maximum

Connection Capacity

for 1 Branch

Model

COBS048B21S

Indoor Unit Side

Branch Number

Maximum Number of

Connected Indoor Units

for 1 Branch

Indoor Unit

Maximum

Connection Capacity

1 7 ≤ 41 ≤ 41

COBS048B22S 1 7 ≤ 41 ≤ 41

COBS096B21S

1 8 ≤ 71 ≤ 71 COBS096B22S 1 8 ≤ 71 ≤ 71 COB04M132B22S 4 6 ≤ 114 ≤ 41 COB08M264B22S 8 6 ≤ 216 ≤ 41 COB12M264B22S 12 6 ≤ 216 ≤ 41

*4 If the number of connected indoor unit exceeds four, the upstream or downstream piping of change-over box

(Piping Size

5 6 7

) need to change the size respectively. Refer to page 44 5 “Diameter of Pipe between Change-Over Box and Multi-kit” for details. Only single unit per branch is allowed to be connected.

Header Branch

Branch using Multi-Kit (MH Model)

for Three Pipes Portion

Indoor Unit Capacity

Total

(MBH)

36 - 72 8 MH-NP288X

No. of Header

Branches

Model

for Two Pipes Portion

Indoor Unit Capacity

Total

(MBH)

No. of Header

Branches

36 - 60 4 MH-NP224A 36 - 72 8 MH-NP288A

Model

P5417009-rev.6

Page 49

Refer to the gure at the beginning of section 6.5.

Piping Size Unit: inch (mm)

Main Pipe Diameter

(Base Unit or Piping Connection Kit 1 to First Branch)

Model: (H,Y)VAHR_B(3,4)2S

Outdoor Unit

Capacity

Low Pressure Gas

(MBH)

72, 96 7/8 (22.2) 3/4 (19.05) 1/2 (12.7) 5/8 (15.88)

120 1-1/8 (28.58) 7/8 (22.2) 1/2 (12.7) 5/8 (15.88)

144 - 192 1-1/8 (28.58) 7/8 (22.2) 5/8 (15.88) 3/4 (19.05)

216 1-1/8 (28.58) 7/8 (22.2) 3/4 (19.05) 3/4 (19.05)

240, 264 1-3/8 (34.93) 1-1/8 (28.58) 3/4 (19.05) 3/4 (19.05)

288 - 360 1-3/8 (34.93) 1-1/8 (28.58) 3/4 (19.05) 7/8 (22.2)

384 - 432 1-5/8 (41.28) 1-3/8 (34.93) 3/4 (19.05) 7/8 (22.2)

*5 In some cases, it is required to prepare the reducer (eld-supplied).

High/Low Pressure

Gas

Liquid

Maximum Equivalent Piping Length

< 328 ft (100m)

> 328 ft (100m) *

inch (mm)

Diameter of Pipe after First Branch *

Total Indoor Unit

Capacity

Low Pressure Gas

(MBH)

High/Low Pressure

Gas

< 47 5/8 (15.88) 1/2 (12.7) 3/8 (9.52)

48 - 71 3/4 (19.05) 5/8 (15.88) 3/8 (9.52)

72 - 95 7/8 (22.2) 3/4 (19.05) 3/8 (9.52)

96 - 119 7/8 (22.2) 3/4 (19.05) 1/2 (12.7)

120 - 143 1-1/8 (28.58) 7/8 (22.2) 1/2 (12.7)

144 - 215 1-1/8 (28.58) 7/8 (22.2) 5/8 (15.88)

216 - 299 1-3/8 (34.93) 1-1/8 (28.58) 3/4 (19.05)

> 300 1-5/8 (41.28) 1-3/8 (34.93) 3/4 (19.05)

*6 If the size of

size of

“Diameter of Pipe after First Branch” is larger than the size of 3 “Main Pipe Diameter”, adjust the

“Diameter of Pipe after First Branch” to the same size as 3 “Main Pipe Diameter”.

inch (mm)

Liquid

P5417009-rev.6

Page 50

Diameter of Pipe between Change-Over Box and Multi-Kit

For Change-Over Box (Generation 1)

Change-Over Box

Model

Total Indoor Unit

Capacity (MBH)

≤ 29

COB048/096B21S

(Generation 1)

30 - 59

60 - 96

For Change-Over Box (Generation 2)

Change-Over Box

Model

Total Indoor Unit

Capacity (MBH)

Low Pressure

[1-1/8

Gas

5/8

[5/8

3/4

[7/8

7/8

(15.88) (15.88)]

(19.05) (22.2)]

(22.2) (28.58)]

Low Pressure Gas

High/Low Pressure

Gas

1/2

[1/2

5/8

[3/4

3/4

[7/8

Gas

inch (mm)

(12.7) (12.7)]

(15.88) (19.05)]

(19.05) (22.2)]

Liquid

inch (mm)

≤ 47 5/8 (15.88) 1/2 (12.7) 3/8 (9.52)

48 - 71 3/4 (19.05) 5/8 (15.88) 3/8 (9.52)

COBS048/096B22S COB04M132B22S COB08/12M264B22S

(Generation 2)

72 - 95 7/8 (22.2) 3/4 (19.05) 3/8 (9.52)

96 - 119 7/8 (22.2) 3/4 (19.05) 1/2 (12.7)

120 - 143 1-1/8 (28.58) 7/8 (22.2) 1/2 (12.7)

144 - 215 1-1/8 (28.58) 7/8 (22.2) 5/8 (15.88)

216 - 264 1-3/8 (34.93) 1-1/8 (28.58) 3/4 (19.05)

*7 If the number of connected indoor unit exceeds four, the low pressure gas and high/low pressure gas pipes need to

change size in square bracket. In addition, the gas and liquid pipes of

“Diameter of Pipe Connected to Indoor Unit (Two Pipes Portion)” need to increase one size respectively. In this

“Diameter of Pipe (Two Pipes Portion)” and

case, prepare a eld-supplied reducer.

*8 If the size of

Diameter”, adjust the size of

“Diameter of Pipe between Change-Over Box and Multi-Kit” is larger than the size of 3 “Main Pipe

“Diameter of Pipe between Change-Over Box and Multi-Kit” to the same size as 3

“Main Pipe Diameter”

*9 Change-Over Box (COBS048/096B22S) is not connected to liquid pipe.

Diameter of Pipe (Two Pipes Portion)

Total Indoor Unit

Capacity

Gas

*10

inch (mm)

Liquid

(MBH)

< 47 5/8 (15.88) 3/8 (9.52)

48 - 71 3/4 (19.05) 3/8 (9.52)

72 - 95 7/8 (22.2) 3/8 (9.52)

96 - 119 7/8 (22.2) 1/2 (12.7)

120 - 143 1-1/8 (28.58) 1/2 (12.7)

144 - 215 1-1/8 (28.58) 5/8 (15.88)

216 - 299 1-3/8 (34.93) 3/4 (19.05)

> 300 1-5/8 (41.28) 3/4 (19.05)

*10 For the exclusive use of cooling operation, connect

the low pressure gas pipe to the gas pipe of line branch or header branch for two pipes portion.

Diameter of Pipe Connected to Indoor Unit

(Two Pipes Portion)

The pipe diameter should be the same as the indoor unit pipe connection size.

Indoor Unit

Capacity

Gas

*11

inch (mm)

Liquid

(MBH)

6 - 15 1/2 (12.7) 1/4 (6.35)

18 - 54 5/8 (15.88) 3/8 (9.52)

60 - 72 3/4 (19.05) 3/8 (9.52)

96 7/8 (22.2) 3/8 (9.52)

*11 For the exclusive use of cooling operation, connect

the low pressure gas pipe to the gas pipe of the indoor unit.

*12 When liquid piping length is longer than 49ft (15m),

use 3/8inch (9.52mm) diameter pipe to connect to the indoor unit (two pipes portion).

*12

P5417009-rev.6

Page 51

● Piping Work Conditions

: High/Low Pressure Gas Pipe, Low Pressure Gas Pipe, Liquid Pipe

< For two and three units combination >

Upstream Side

CH-M : Change-Over Box (Multiple Branch Type)

Comply with the following when installing the unit.

Indicate what installer must comply with. This is not an example of compliance. Describe the limitation shown in the drawing.

Maintain a straight-line distance of

19-11/16 inches (500mm) or more for piping after the piping connection kit.

First Branch

Indoor Unit Side

Piping Connection Kit 1

Outdoor

Unit

Outdoor

Unit

La Lb Lc

Piping Connection Kit 2

Outdoor

Unit

Indoor

Unit

(Exclusive Use of Cooling Operation)

Header Branch

Indoor

Unit

CH-M

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

gh i

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Indoor

Unit

Terminal

Indoor Unit

Header Branch (Change-Over Box in Common Use)

fgh

Indoor

Unit

Indoor

Unit

Indoor

Unit

P5417009-rev.6

: Gas Pipe, Liquid Pipe

: Low Pressure Gas Pipe, Liquid Pipe

CH : Change-Over Box (Single Branch Type)

Page 52

Example1) If a Line Branch Including Main Branch

Example 2) If Utilizing a Piping Connection Kit

Item Mark Details

Total Piping Length

Maximum Piping Length

Piping Length -

Equivalent Piping Length

Ex1 a+b+c

Ex2 d+e+f+g+h

Ex1 a+c

Ex2 f+h

The total amount of all piping actual length.

The actual pipe length between the stop valve of the outdoor unit or the piping connection kit 1 and the terminal indoor unit.

The actual length of pipe that takes no account for equivalent lengths for pressure drops of elbows.

The combination of the straight pipe length plus the equivalent length of elbows and other pressure drop calculations.

Outdoor

Unit

First Branch Multi-Kit

● Piping Work Conditions

Item Mark

Total Piping Length -

Maximum Piping Length

Maximum Piping Length between Multi-kit of 1st Branch and Each Indoor Unit

Maximum Piping Length between Each Multi-kit/Change-Over Box (Multiple Branch Type) and Each Indoor Unit

Total Piping Length between Change-Over Box and Each Indoor Unit per Branch

Piping Length between Piping Connection Kit 1 and Each Outdoor Unit

Height Difference between Outdoor Units and Indoor Units

Height Difference between Indoor Units H2 < 49 ft (15m) < 49 ft (15m)

Height Difference between Indoor Units Connected to Same Branch of Change-Over Box

Height Difference between Change-Over Box H4

Height Difference between Outdoor Units H5

Height Difference between Change-Over Box and Indoor Unit

Indoor

Unit

Indoor

Unit

Actual Length

Equivalent Length

O.U. is Higher

O.U. is Lower

Outdoor

Piping Connection Kit

Unit

First Branch Multi-Kit

Outdoor

Unit

Indoor

Unit

Indoor

Unit

Allowable Piping Length

< the recommended number of connected indoor units

> the recommended number of connected indoor units

< 3,281 ft (1,000m) < 984 ft (300m)

e+f+g+h+i

La, Lb, Lc

< 541 ft (165m) < 541 ft (165m)

< 623 ft (190m) < 623 ft (190m)

< 295 ft (90m) < 131 ft (40m)

< 131 ft (40m) < 98 ft (30m)

< 32 ft (10m) < 32 ft (10m)

< 164 ft

< 131 ft

(360 ft

(50m) (110m))

(40m) (110m))

< 164 ft

< 131 ft

(360 ft

(50m) (110m))

(40m) (110m))

< 13 ft (4m) < 13 ft (4m)

< 49 ft (15m) < 49 ft (15m)

< 0.3 ft (0.1m) < 0.3 ft (0.1m)

H6 See Notice 12 below See Notice 12 below

P5417009-rev.6

Page 53

NOTICE

Multi-Kit

Comply with the following conditions when installing the unit.

1. For a combination of two or three outdoor units, the outdoor unit “A” should be connected to the piping connection of

Kit 1. (Refer to Section 6.4 for outdoor unit models.) Refer to the Piping Kit Installation Manual for piping details.

2. The piping length between outdoor units should be La < Lb < Lc < 32 ft (10m). (If the piping length is incorrect, there may be a failure of outdoor units caused by returned refrigerant.)

3. Maintain a straight-line distance of 19-11/16 inches (500mm) or more for pipe after installing the piping connection kit.

4. For the exclusive use of cooling operation only, connect indoor units with low pressure gas pipe and liquid pipe (without

Change-Over Box). The total capacity of the exclusive cooling operation should be smaller than 50% of the total indoor unit capacity.

5. The condition of refrigerant piping installation is different depending on the number of indoor units that are connected. Refer to Table 3.2 “System Combination” above for details.

6. Allowable total piping length may not exceed 3,281 ft (1,000m) because of the limitation of maximum additional refrigerant amount as described in the following table. Make sure that the additional refrigerant volume does not exceed the maximum additional refrigerant amount as shown below.

Outdoor Unit Capacity (MBH) 72 96 - 144 168 192 216 - 432

Max. Additional Refrigerant Charge: lbs (kg) 79.4 (36) 88.2 (40) 112.5 (51) 114.7 (52) 138.9 (63)

When the outdoor air temperature is 14

unit capacity should be less than 100% of the outdoor unit capacity, and the total piping length should be less than 984 ft (300m).

7. If the piping length (L3) between each multi-kit and indoor unit is considerably longer than other indoor unit, refrigerant may not ow well, and may lessen the unit’s performance compared to other models. (Recommended Piping Length: Within 49 ft (15m))

8. When the piping length from the multi-kit to the rst branch and to the terminal indoor unit exceeds 131 ft (40m), refer

to “Piping Branch Restrictions,” Section 6.5.

9. When completing on-site piping, install bent piping or horizontal loop piping to absorb any expansion or contraction due to changing temperatures.

10. When the height difference is longer than 164 ft (50m) and up to 360 ft (110m) (in case the outdoor unit is higher, “O.U. is Higher”), there are following restrictions.

a) Maximum outdoor temperature for cooling operation should be within 109 b) When operating the outdoor unit in the outdoor air temperature approx. 14

should be below 164ft (50m). c) Maximum connectable indoor units capacity ratio must be within 100%. d) When operating the outdoor unit under the high cooling load conditions or in the high outdoor air temperature (approx.

F (38oC) or more), the capacity may decrease signicantly due to the compressor protection controls compared

100

to the installation condition of height difference below 164 ft (50m). When the outdoor air temperature is 100

C DB) or more, the outdoor unit will function as Thermo-OFF to protect the compressor from failure.

(38 e) Use of outdoor unit function setting item “nU” (Priority Capacity Mode) may be invalid. f) Contact your distributor or contractor for details of setting.

11. When the height difference is longer than 131 ft (40m) and up to 360 ft (110m) (in case the outdoor unit is lower, “O.U. is Lower”), there are following restrictions.

a) Maximum outdoor temperature for cooling operation should be 109 b) Minimum outdoor temperature for cooling operation should be 50 c) Minimum outdoor temperature for simultaneous operation should be 50 d) Contact your distributor or contractor for details of setting.

12. When the piping height difference between change-over box and indoor unit over 49 ft (15m), the performance may decrease. (Recommended Height Difference: Within 49 ft (15m))

13. The piping length calculation is not included in the multi-kit between change-over box and indoor unit(s). (Lm in following examples are NOT L3.)

Example

F (-10oC) or less, or under the high heating load conditions, the total indoor

F DB (43oC DB).

F (-10oC) or less, the height difference

F DB (43oC DB) or less.

F DB (10oC DB) or more.

CH-M

F DB

P5417009-rev.6

Multi-Kit

Indoor

Unit

Indoor

Unit

Multi-Kit

Indoor

Unit

Indoor

Unit

Page 54

● Piping Branch Restriction

Piping Length from the Multi-Kit at the first branch to

from the First Branch

The Farthest Indoor Unit

* Main Piping Branch:

Both branches of piping from a multi-kit are connected to the next multi-kits. (including change-over box (multiple branch type).)

Main Piping Branch

In the following instances, there is no limit to the number of main piping branches.

If the piping length L2 from the multi-kit at the rst branch to the farthest indoor unit is over 131.2 ft (40m), follow the instructions below when performing the eld-supplied piping work.

If the installation contains a main piping branch And, any piping length between the rst branch to each indoor units (L2) is over 131.2 ft (40m). Then the difference between closest L2 and the farthest L2 (terminal unit) cannot be greater than

131.2 ft (40m).

the terminal Indoor Unit is within 131.2 - 295.3 ft (40 - 90m)

(g+h+j)-(b+d) ≤ 131.2 ft (40m)

First Branch and * Main Piping Branch

Multi-Kit

The Closest Indoor Unit from the First Branchࠉ

The Farthest Indoor Unit from the First Branchࠉ

Indoor Unit

Terminal Indoor Unit

Main Piping Branch

Change-Over Box (Multiple Branch Type)

(b+d+e+f+g) - c ≤ 131.2 ft (40m)

First Branch Multi-Kit

The Closest Indoor Unit from the First Branchࠉ

Indoor Unit

* Main Piping Branch Multi-Kit

from the First Branch

Terminal Indoor Unit

(g+k) - (b+d) ≤ 131.2 ft (40m)

First Branch and * Main Piping Branch

Multi-Kit

Change-Over Box (Multiple Branch Type)

The Closest Indoor Unit from the First Branchࠉ

hi jk

CH-M

The Farthest Indoor Unit

Terminal Indoor Unit

ࠉ

Installation without Main Piping Branch: Unrestricted

First Branch Multi-Kit

The Closest Indoor Unit from the First Branchࠉ

ce gi

The Farthest Indoor Unit from the First Branchࠉ

Terminal Indoor Unit

P5417009-rev.6

Page 55

Indoor Unit Indoor Unit

CORRECT

INCORRECT

: Three Pipes segment

Change-Over Box

Change-Over Box (Multiple Branch Type)

CORRECT

INCORRECT

Header branch can be used with a line branch at the three pipes segment and two pipes segment. Header branch can also be used after the second branch. Do not connect a line branch to a header branch.

When using a header branch, make sure that the piping length L2 from the multi-kit at the rst branch to the

farthest indoor unit is within 131.2 ft (40m).

First Branch Multi-Kit for Line Branch

Second Branch Multi-Kit for Header Branch

Multi-Kit for Header Branch

L2: Within 131 ft (40m)

Multi-Kit for Line Branch

Change-Over Box

Indoor Unit

: Three Pipes segment : Two Pipes segment

CORRECT

First Branch Multi-Kit for Line Branch

Second Branch Multi-Kit for Header Branch

L2: Within 131 ft (40m)

Change-Over Box

Indoor Unit

: Two Pipes segment

In case of the change-over box (multiple branch type) is connected, the following restrictions apply.

Line Branch

CH-M

First Branch Multi-Kit

CH-M

Indoor Unit

CORRECT

Change-Over Box (Multiple Branch Type)

P5417009-rev.6

Header branch can not be connected before and after change-over box (multiple branch type). Also, header branch can not connect to another header branch.

Line Branch

Header Branch

Line Branch

Change-Over Box (Multiple Branch Type)

CH-M

INCORRECT

Header Branch

Header branch cannot be connected to upstream or downstream piping of change-over box (multiple branch type).

INCORRECT

Upstream

Change-Over Box (Single Branch Type)

Header Branch

Downstream

CH CH CH-M

Change-Over Box (Multiple Branch Type)

INCORRECT

Upstream

Indoor Unit Indoor Unit

Change-Over Box (Multiple Branch Type)

CH-M

Downstream

Header Branch

Page 56

The number of indoor units connectable to outdoor unit is as follows:

•

Comply with the following conditions when installing the unit.

A maximum total capacity and a minimum total capacity against the nominal outdoor unit capacity can be

•

obtained by combination of the indoor units.

Outdoor Unit Capacity

(MBH)

Maximum Number of Connectable I.U

Recommended Number of Connectable I.U

72 96 120 144 168 192 216 240 264 288 312 336 360 384 408 432

15 20 26 26 36 40 46 52 56 59 64 64 64 64 64 64

8 8 8 10 12 14 18 18 20 20 22 24 28 30 30 30

NOTES:

1. For a system under which all the indoor units are supposed to operate simultaneously, the total indoor

unit capacity should be less than outdoor unit capacity. Otherwise, it may cause a decrease of operating performance and operating limit in overload operation.

2. For the system under which all the indoor units are not supposed to operate simultaneously, the total

indoor unit capacity is available 100% or more against the outdoor unit capacity. Refer to Table 3.2 “System Combination” for detail.

3. When operating the outdoor unit in cold area with temperatures of 14

F (-10oC), or under the high heating

load conditions, the total indoor unit capacity should be 100% or less against the outdoor unit capacity and the total piping length should be 984.3ft (300m) or less.

4. The airow volume for indoor units of 6 and 8 MBH is set higher than that for indoor units of 12 MBH or more. Make sure to select appropriate indoor units when installing indoor units where cold draft may occur during heating operation. If installing indoor units in such places, refer to the recommended number of connectable indoor units.

5. When installing an Energy Recovery Ventilation unit, the additional load must be considered when calculating the maximum units that can be attached.

P5417009-rev.6

Page 57

6.6 Multi-Kit Connection

Keep Horizonta

Keep Horizontal

Ceiling Surface or Beam

to the surface of Pillar or Wall.

CORRECT CORRECT CORRECT INCORRECT

Straight piping does not allow for movement of the pipe

Use the branch piping kit to ensure proper piping. Do not use a T-Joint. Secure the branch pipes horizontally to a pillar, a wall, or ceiling.

When installing the piping by securing plates, wrap the branch pipe with an insulation or slip a cushioning between the pipe and the plate. Then secure it to the wall.

Indoor Unit

To Outdoor Unit

To Indoor Unit

Branch Connection

Keep Vertical

Keep Horizontal

Secure the Branch Pipe

Securing the Branch Pipe to

Installation Position of Branch Piping

Upper Side Upper Side Upper Side Upper Side

Branch Pipe

Min.

1.6 ft

(0.5m)

Branch Connection

Bending Radius

Branch Pipe

Main Pipe

Branch Connection

Branch Pipe

Straight

Length

Min. 1.6 ft

(0.5m)

Branch Pipe

Main Pipe

Branch Connection

Branch Pipe

Main Pipe

Branch Pipe

Branch Connection

Branch Pipe

Piping Form from Multi-Kit to Indoor Unit

When on-site piping is installed using soft or hard copper, make sure that the piping is installed to allow for movement of the piping. Temperature changes cause contraction and expansion of the pipe.

Example: Recommended

From each Indoor Unit to Multi-Kit, use hard copper pipes that bend to prevent kinking.

Hard copper pipe will expand and contract due to temperature changes in piping.

Multi-Kit

Bending Pipe

Connection Pipe

Outdoor Unit

Indoor Unit

Example: Not Recommended

Hard copper pipe will expand and contract due to temperature changes in piping.

when it expands or contracts.

Outdoor Unit

P5417009-rev.6

Page 58

7. Electrical Wiring

DSW7

● Theindoorunitfanmaycontinuetooperateforuptoveminutesfollowingtheheatingcycleto

dissipate residual heat from the indoor unit.

● Checktoensurethattheindoorfanandtheoutdoorfanhavestoppedbeforeelectricalwiringwork

or a periodical check is performed.

● Insulateelectricalwiring,drainpiping,andelectricalcomponentsfromthreatsposedbyburrowing

animals and temperature extremes. Failure to do so, can over time, deteriorate system performance.

● Electricalcablesshouldnotcomeintocontactwithrefrigerantpiping,plateedges,andelectrical

components inside the unit.

● GFCImayberecommendeddependingontheapplication;ifnot,electricshockorarecanresult.

● Securethecables.Externalforcesontheterminalscanleadtore.

● Tightenscrewsaccordingtothefollowingtorque.

M3.5: 0.5 to 0.7 ft·lbs (0.7 to 0.9 N·m) M5: 1.5 to 1.8 ft·lbs (2.0 to 2.5 N·m) M6: 3.0 to 3.7 ft·lbs (4.0 to 5.0 N·m) M8: 6.6 to 8.1 ft·lbs (9.0 to 11.0 N·m) M10: 13.3 to 17.0 ft·lbs (18.0 to 23.0 N·m)

● SetDSW7onthePCB1accordingtoeachpowersupplyshowninthegurebelow.

Power Supply Setting

208V Unit:

230V, 460V Unit:

208V, 230V Unit: 230V Setting Before Shipment 460V Unit: 460V Setting Before Shipment

Setting is required.

No setting is required.

208V 230V 460V

21ON34 21ON34 21ON34

● Usethespeciedcablesforwiringbetweentheoutdoorunitandindoorunits.Selectingincorrect cableswillcauseanelectricshockorare.CommunicationcableshallbeaminimumofAWG18

(0.82mm2), 2-Conductor, Stranded Copper. Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cable is applied, secure properly and terminate cable shield as required per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements.

● Tightlysecuretheelectricalwiringstotheterminalblockaccordingtothespeciedtorque. Iftighteningtheterminalsisnotcompleted,heatgeneration,anelectricshockorarewilloccurat

the terminal connections.

P5417009-rev.6

Page 59

7.1 General Check

(1) Make sure that the eld-supplied electrical components (main power switches, circuit breakers, wires,

conduit connectors, and wire terminals) are properly selected according to the electrical characteristics indicated in Table 7.1. Make sure that the components comply with local codes.

Supply electrical power to each outdoor unit. This equipment can be installed with a GFCI, which

•

is a recognized measure for added protection to a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches and wiring in accordance with local codes. The equipment installer is responsible for understanding and abiding by applicable codes and requirements.

Supply power supplies for the indoor unit and outdoor unit respectively.

•

Connect the power supply wiring to each indoor unit group and its respective outdoor unit.

This equipment can be installed with a GFCI, which is a recognized measure for added protection to

a properly grounded unit. Install appropriate sized breakers / fuses / overcurrent protection switches and wiring in accordance to local codes. The equipment installer is responsible for understanding and abiding by applicable codes.

The power supply for the Change-Over Box and Indoor Unit in the same refrigerant system can be

•

supplied with one main switch.

(2) Check to ensure that the power supply voltage is within ±10% of the rated voltage.

If the power supply voltage is too low, the system cannot start due to the voltage drop.

(3) Check the size of the electrical wires.

(4) Communication cable must be a minimum of AWG18 (0.82mm

Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cable is applied, secure properly and terminate cable shield as required per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local codes where:

The power supply for the packaged air conditioner is supplied from the same power transformer as the

•

device with high electricity consumption*

The power supply wiring for the device* and for the packaged air conditioner are located close to each

•

other.

* Example: Lift, container crane, rectier for electric railway, inverter power device, arc furnace,

electric furnace, large-sized induction motor, and large-sized switch.

In the instances mentioned above, an induction surge of the power supply wiring for the packaged air

conditioner could occur due to a rapid change in electricity consumption of the device and activation of the switch. Therefore, check the local codes before performing electrical work in order to protect the power supply wiring of the packaged air conditioner.

(5) Check to ensure that the ground wiring for the outdoor unit and indoor unit are connected.

), 2-Conductor, Stranded Copper.

P5417009-rev.6

Page 60

7.2 Electrical Wiring Connection

● ThisequipmentcanbeinstalledwithaGFCI,whichisarecognizedmeasureforaddedprotection toaproperlygroundedunit.Installappropriatesizedbreakers/fuses/overcurrentprotection

switches and wiring in accordance to local codes and requirements. The equipment installer is responsible for understanding and abiding by applicable codes and requirements.

● Performtheelectricalworkaccordingtotheregulationsofeachregionandthismanual. A separate, dedicated electrical circuit must be used. If the electrical wiring work is performed incorrectly or there is a capacity shortage of the power circuit, it will cause an electric shock or a

re.

● Checkthatthegroundwireissecurelyconnected.Iftheunitisnotcorrectlygrounded,itmaylead

to an electrical shock.

Donotconnectthegroundwiringtogaspiping,waterpiping,lightingconductor,ortelephone

ground cables.

(1) Power Supply Wiring

Supply the power supplies to each outdoor unit and indoor unit group respectively. Using this method is a basic principle of power supply wiring.

GFCI (Ground Fault Circuit Interrupter)

S (Main Switch and Fuse)

Outdoor

Unit

Outdoor Unit Power Supply

AC 3~ 208/230V 60Hz

AC 3~ 460V 60Hz

GFCI

Outdoor

Unit

GFCI GFCI

3 3

Outdoor

Unit

Power Supply Wiring (O.U.)

Ground Wiring (O.U.)

Communication Cable (O.U. ~ O.U.)

Communication Cable (O.U. ~ CH-Box)

Communication Cable (CH-Box ~ CH-Box)

Communication Cable (CH-Box ~ I.U.)

Power Supply Wiring (I.U., CH-Box)

Ground Wiring (I.U., CH-Box)

Indoor Unit Side

8 8

GFCI

8 8

CH CH

Pull Box Pull Box

Indoor

Unit

Indoor

Unit

999

1010

Indoor Unit, Change-Over Box

Power Supply

AC 1~ 208/230V 60Hz

P5417009-rev.6

Page 61

(2) Electrical Characteristics

Note the following when selecting wiring:

● Use the charts below to select appropriate sized breakers / fuses / overcurrent protection switches and wiring in accordance with local codes.

● Ensure communication cable is a minimum of AWG18 (0.82mm

Table 7.1 Electrical Characteristics and Recommended Wiring Size

208/230V

Outdoor Unit Inverter 1 Inverter 2

Model

(H,Y)VAHR072B32S 60 208/230 253 188 29/26 40/40 40/40 22.6 - 50 -

(H,Y)VAHR096B32S 60 208/230 253 188 39/35 50/50 50/50 30.7 - 50 -

(H,Y)VAHR120B32S 60 208/230 253 188 46/42 60/50 60/50 20.2 20.2 54 54

(H,Y)VAHR144B32S 60 208/230 253 188 58/52 70/70 70/70 25.5 25.5 54 54

(H,Y)VAHR168B32S 60 208/230 253 188 65/59 80/80 80/80 28.6 28.6 50 50

(H,Y)VAHR192B32S 60 208/230 253 188 76/68 90/90 90/90 33.4 33.4 50 50

Hz Voltage Max. Min. MCA MOP Max. Fuse MOC MOC LRA LRA

(Hz) (V) (V) (V) (A) (A) (A) (A) (A) (A) (A)

INV Comp. 1 INV Comp. 2

Fan Motor 1 Fan Motor 2

Model

(H,Y)VAHR072B32S 0.75 - 10/10 10/10 18

(H,Y)VAHR096B32S 0.75 0.75 8/8 8/8 18

(H,Y)VAHR120B32S 0.75 0.75 6/6 6/6 18

(H,Y)VAHR144B32S 0.75 0.75 4/4 4/4 18

(H,Y)VAHR168B32S 0.75 0.75 4/4 4/4 18

(H,Y)VAHR192B32S 0.75 0.75 2/4 2/4 18

Output Output

(kW) (kW) (AWG) (AWG) (AWG)

Power Supply

Wiring

Wiring Size

Ground

Wiring

Communication

Cable

460V

Outdoor Unit Inverter 1 Inverter 2

Model

(H,Y)VAHR072B42S 60 460 506 414 15 20 20 11.5 - 47 -

(H,Y)VAHR096B42S 60 460 506 414 22 30 30 17.1 - 47 -

(H,Y)VAHR120B42S 60 460 506 414 24 30 30 10.4 10.4 32 32

(H,Y)VAHR144B42S 60 460 506 414 30 35 35 13.2 13.2 32 32

(H,Y)VAHR168B42S 60 460 506 414 34 40 40 14.8 14.8 47 47

(H,Y)VAHR192B42S 60 460 506 414 39 50 50 17.3 17.3 47 47

Model

(H,Y)VAHR072B42S 0.75 - 14 14 18

(H,Y)VAHR096B42S 0.75 0.75 12 12 18

(H,Y)VAHR120B42S 0.75 0.75 12 12 18

(H,Y)VAHR144B42S 0.75 0.75 10 10 18

(H,Y)VAHR168B42S 0.75 0.75 8 8 18

(H,Y)VAHR192B42S 0.75 0.75 8 8 18

Hz Voltage Max. Min. MCA MOP Max. Fuse MOC MOC LRA LRA

(Hz) (V) (V) (V) (A) (A) (A) (A) (A) (A) (A)

Fan Motor 1 Fan Motor 2

Output Output

(kW) (kW) (AWG) (AWG) (AWG)

Power Supply

Wiring

Wiring Size

Ground

Wiring

Communication

Cable

MCA: Minimum Circuit Ampacity (A) MOP: Maximum Overcurrent Protective Device (A) MOC: Maximum Operating Current (A) LRA: Locked Rotor Ampacity (A)

INV Comp. 1 INV Comp. 2

P5417009-rev.6

Page 62

Install a multi-pole main switch with a space of 1/8 inch (3.5mm) or more between each phase.

ATTENTION:

1. When the power supply wiring is longer, select the minimum wiring size that has a voltage drop within 2%.

2. Power supply voltage should be satised with the followings. Supply Voltage: Rated Voltage within +10% Starting Voltage: Rated Voltage within -15% Operating Voltage: Rated Voltage within +10% Imbalance between Phases: within 3%

3. Do not connect the ground wiring to gas piping, water pipe, or a lightening conductor. Gas Piping: An explosion and ignition may occur if there is escaping gas. Water Piping: There is no effective electrical ground provided when hard vinyl piping is used. Lightening Conductor: The electrical potential of the earth increases when a lightening conductor is used.

P5417009-rev.6

Page 63

7.3 Electrical Wiring for Outdoor Unit

Connect the electrical wiring according to the following gure:

(1) Connect the power supply wires to L1, L2, and L3 for the three-phase power supply on the terminal

block TB1 and ground wiring to the terminal in the electrical control box.

(2) Connect the communication cables between the outdoor and indoor units to the TB2 terminals 1 and 2

on the PCB1. As for the communication cables between outdoor units in the same refrigerant system, connect them to the TB2 terminals 3 and 4 on the PCB1. When shielded cable is applied (M4), secure properly and terminate cable shield as required per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code. Communication

cable must be a minimum of AWG18 (0.82mm

(3) Insert the communication cables into the PVC tube “VW-1 600V” (Accessory) to separate from the

power supply wirings and the communication cables in the outdoor unit. Local codes need to be followed. Then, tighten both ends of the PVC tubing with the cable bands (accessory) in order to secure the PVC tubing to the communication cables. When the rated voltage of the communication cables (local code) are 600V or more, it is not required to insert them into the PVC tube “VW-1 600V” (accessory).

(4) Tighten screws for the terminal block according to the following table.

Required Tightening Torque

Size Tightening Torque

M3.5 0.5 to 0.7 ft∙lbs (0.7 to 0.9 N∙m)

M5 1.5 to 1.8 ft∙lbs (2.0 to 2.4 N∙m)

M6 3.0 to 3.7 ft∙lbs (4.0 to 5.0 N∙m)

M8 6.6 to 8.1 ft∙lbs (9.0 to 11.0 N∙m)

M10 13.3 to 17.0 ft∙lbs (18.0 to 23.0 N∙m)

), 2-Conductor, Stranded Copper.

P5417009-rev.6

Page 64

(1) Detail of Electrical Box Terminal

Fix the communication cable using a clamp.

208/230V 60Hz

Terminal Block for Power Supply Wiring (TB1)

Ground Wiring Terminal (Connect cable securely)

460V 60Hz

Terminal Block for Power Supply Wiring (TB1)

Electrical Box

(1) Terminal Block for Power Supply

(4) Power Supply Wiring Outlet (Rubber Bushing)

PVC Tube “VW-1 600V” (Accessory)

Cable Clamp (for fixing power supply wiring)

Cable Clamp (Accessory) NOTE:

Fix by accessory screw (for fixing communication cable).

Above figure illustrate the example of a small cabinet (208/230V).

Attach insulation sleeve.

Rubber Bushing

TB1

Cable Band

TB2

(4) Communication Cable Outlet (Rubber Bushing)

Ground Wiring

Cable Band

Printed Circuit Board (PCB1)

(2) Terminal Block for Communication Cable

(2) Detail of Terminal Block for Communication Cable

● Do not connect the main power supply wiring to the communication line (Terminals 1, 2, 3 and 4 of TB2). If these are connected, the PCB1 will be destroyed.

PCB1

Screw (M3.5)

Outdoor to Outdoor Terminal (Communication cable between outdoor units used in combination.) *

* This terminal is used only for combination outdoor units and not used for single units.

H-LINK Terminal (Communication cable between the outdoor unit and indoor unit, or between the outdoor unit and outdoor unit of other refrigerant system.)

TB2

PVC Tube (Accessory)

Communication Cable for Indoor Unit to Outdoor Unit

Inside of Unit

Outside of Unit

Attach insulation sleeve.

Ground Wiring Terminal (Connect cable securely)

Ground WiringPower Supply Wiring

TB2

12 34

Communication Cable between Outdoor Units

Cable Band (Accessory)

(3) Details of Piping Cover Wiring Outlet

● Be sure to install accessory rubber bushing to the wiring outlet for communication cable.

● Hermetically seal the end of conduit tubing by using putty to seal against moisture.

For Power Supply Wiring (φ1-3/4 (43.7) Knockout Hole)

For Communication Cable (φ1-5/16 (33) Knockout Hole)

For Power Supply Wiring (φ1-3/8 (34.5) Knockout Hole)

(4) Details of Wiring Outlets inside the Electrical Box (Rubber Bushing Section)

Rubber Bushing (Wiring Outlet)

Correct Incorrect

Rubber Bushing

Electrical Box (Metal)

Make sure that the rubber bushing is in place.

For Power Supply Wiring * (φ7/8 (22.2) Knockout Hole)

Using a cutter knife, and cut an X in the rubber bushing on site as shown below.

Unit: inch (mm)

* Do not use the φ7/8 inch (22.2mm) knockout hole when installing the low ambient kit.

Make sure that the power supply wiring passes through the center of the rubber bushing.

Correct

Rubber Bushing

Incorrect

Rubber Bushing

If the power supply wiring does not pass through properly, snow or water may enter in the unit.

Snow or water may enter.

P5417009-rev.6

Page 65

Be sure to note the following points when running cables under the unit using conduit tubing. (The pipe cover needs to be removed before performing piping and wiring.)

NOTICE:

● When installing the power supply wiring, use the eld-supplied conduit tube as shown below. Remove the rubber bushing from the unit for the conduit tubing installation.

● When installing the communication cables, run them through the rubber grommet attached to the unit.

● Maintain at least 5 inches (127mm) between the power supply wiring and communication cables.

● Prevent cables from touching or rubbing up against refrigerant piping, plate edges, and electrical

components inside the unit.

Rubber Bushing

Communication Cable

Power Supply Wiring

Conduit Tube

Tightly secure the power supply wiring using a cable clamp inside the unit.

7.4 Electrical Wiring Connections of Indoor Unit, Outdoor Unit, and Change-Over Box

(1) Connect a power supply wiring to each outdoor unit. Connect an optional Ground Fault Circuit

Interrupter (GFCI), fuse, and main switch (S) to each outdoor unit.

(2) Connect a power supply wiring to each indoor unit group and change-over box group connected to the

same outdoor unit. (Total operating current be less than 12A.)

Connect an optional Ground Fault Circuit Interrupter (GFCI), fuse, and main switch (S) to each indoor

unit group.

(3) Connect the communication cable between indoor units, change-over boxes and outdoor units, as

shown in Figure 7.1.

(4) Connect the communication cables in the same refrigerant system unit. (If the refrigerant piping of

indoor unit is connected to the outdoor unit, also connect the communication cables to the same indoor unit.) Connecting the refrigerant piping and communication cables to the different refrigerant systems may lead to malfunction.

(5) Use communication cabling that is a minimum of AWG18 (0.82mm

Shielded cable must be considered for applications and routing in areas of high EMI and other sources of potentially excessive electrical noise to reduce the potential for communication errors. When shielded cabling is applied, secure properly and terminate cable shield as required per Johnson Controls guidelines. Plenum and riser ratings for communication cables must be considered per application and local code requirements. (Do not use Tri-Core or anything beyond.)

), 2-Conductor, Stranded Copper.

P5417009-rev.6

Page 66

(6) Use the same kind of cables in the same H-LINK system.

Communication Cable for Change-Over Box ~ Indoor Unit

(7) Maintain at least 5 inches (127mm) between the communication cables and the power supply wiring,

and also min. 5 ft (1.5m) between the communication cables and power supply wiring for other electrical device. If these cables are not secured, sleeve the power supply wiring into the metallic conduit tubing to separate them from the other cables. Make sure power supply wiring are well-grounded.

(8) Connect the following communication cables to the terminals 1 and 2 on terminal block (TB2) in the

outdoor unit A (main unit).

• between outdoor unit and indoor unit

• between outdoor unit and change-over box

• between outdoor unit and outdoor unit in other refrigerant systems

(9) Do not connect the power supply wiring to the terminal block for communication cable (TB2).

All the printed circuit boards in the same refrigerant system will be damaged.

(10) For a Heat Recovery System, connect the communication cables from indoor unit exclusively used for

cooling to the terminals 1 and 2 on TB2 in the change-over box.

(11) Connect the ground wiring to the outdoor/indoor units and change-over box. The ground wiring work

under the condition of 100W (max.) ground resistance must be performed by a authorized personnel.

(12) Connect the communication cables between outdoor units in the same refrigerant system to the

terminals 3 and 4 on TB2.

Communication Cable

Install communication cable while paying attention to the following.

For the combination units, DSW settings of Main and Sub.

● An alarm occurs if the communication cables between main outdoor unit and sub outdoor units are

connected to the terminals 1 and 2 for H-LINK system.

● If an alarm is triggered on the LCD of Main outdoor unit, follow the "7-segment" display at the Main outdoor unit for verication purposes.

● Perform a function setting at the Main outdoor unit.

● Maximum number of refrigerant groups with one central controller is 64 (for H-LINK II).

Maximum number of indoor units to be connected is 160 (for H-LINK II).

Refrigerant Group 1 (Heat Pump System) Refrigerant Group 2 (Heat Recovery System)

Outdoor Unit

1L2L3

Communication Cable for H-LINK System

L2L

BA21

Unit No. 0

(Main)

1234L

L2L

BA21

Unit No. 1

Outdoor Unit

1L2L3

(Sub)

BA21

1234L

L2L

Unit No. 2

Outdoor Unit

(Main)

1L2L3

Change-Over Box No.2Change-Over Box No.1

TB1TB

1234 1234

BA21

L2L TB

Unit No. 0

BA21

TB1TB

Unit No. 1

Outdoor Unit

(Sub)

1L2L3

L2L

12341234 L

Communication Cable for Main ~ Sub

L2L

BA21

Unit No. 2

Indoor UnitIndoor UnitIndoor UnitIndoor UnitIndoor UnitIndoor Unit

P5417009-rev.6

Page 67

Main Switch

Outdoor Unit A (Main)

Outdoor Unit B (Sub)

Indoor Unit Group For Cooling Operation Only

3 208/230V 60Hz 460V 60Hz

GFCI

TB1 TB2

L1 L2 L3 1234

Main Switch

GFCI

TB2

TB1

L1 L2 L3

Ground Ground

Change-Over Box 1

TB2TB1

1234

Change-Over Box 2

TB2TB1

1234

TB : Te rminal Block

PCB : Printed Circuit Board

: Field Wiring

: Communication Line

DC5V (Non-Pole Communication H-LINK System)

: Field-Supplied

: Optional Accessory

Change-Over Box 3

TB2TB1

1234

1 208/230V 60Hz

GFCI

Main Switch

GFCI

Distribution Box or Pull Box Distribution Box or Pull Box Distribution Box or Pull Box Distribution Box or Pull Box

L1 L2 NL1L2N L1 L2 NL1L2N L1 L2 N

Controller Cable

TB1

No. 0 Indoor Unit

TB2

12AB

Wired Controller

Controller Cable

TB1

No. 1 Indoor Unit

TB2

12AB

Wired Controller

Controller Cable

TB1

No. 2 Indoor Unit

TB2

12AB

Figure 7.1 Layout for Electrical Wiring Connection (

TB1

No. 3 Indoor Unit

TB2

12AB

Wired Controller

Controller Cable

Wired Controller

Heat Recovery System)

Controller Cable

TB1

No. 4 Indoor Unit

TB2

12AB

Wired Controller

P5417009-rev.6

Page 68

7.5 DIP Switch Setting of Outdoor Unit

Before performing settings:

● Turn OFF all power supplies before performing settings. DIP switch settings cannot be set without rst disconnecting them from the power supply. (However, DSW4 pin Nos.1, 2, 4, and 6 DSW7 pin No.4, and push switches can be operated when power supply is ON.)

The darkened square “n” indicates the position of DIP switches.

NOTICE

● By using DIP switch DSW4, the unit is started 10 to 20 seconds after the switch

adjustment is made.

● To simplify service and maintenance, number this outdoor unit to help distinguish

it from the other outdoor units. Record the unit number in the box on the right.

Arrangement of DIP Switches (PCB1)

Display (7SEG)

SEG2

SEG1

PSW2

PSW1

PSW5

PSW4

DSW10

Enter

DSW2 (PCB1)

Capacity 72 MBH 96 MBH 120 MBH

DSW2

Setting

134ON265

Capacity 144 MBH 168 MBH 192 MBH

DSW2

Setting

134ON265

DSW5 (PCB1)

No setting is required.

Setting Before Shipment

3214ON56

DSW6 (PCB1)

Setting is required.

Single Setting

(Setting Before Shipment)

3214

Combination Setting

Unit A

(No.0 Unit)

3214ON3214ON3214

NOTE: No.4 pin is for optional setting. Refer to Service Manual for detail.

DSW10 (PCB1)

Setting is required.

Setting Before Shipment

Setting Item

End Resistance Setting

Fuse Recovery

*1: Turn OFF No.1 pin for all of the outdoor units in the same H-LINK system except one outdoor unit. *2: If the fuse (EF1) is melted, set No.2 pin to ON for recovery.

DSW4

PSW3

DSW2

DSW5

DSW8

DSW1

Capacity Setting

Emergency Operation

Turn ON the DIP switch when using the below functions.

Setting Item Pin No.

Except No.1 Comp. (MC1) Operation

Except No.2 Comp. (MC2) Operation12

Outdoor Unit No. Setting

IMPORTANT NOTICE

The outdoor unit is not single, the combination setting is necessary. Be sure to do this setting.

Unit B

(No.1 Unit)

Transmission Setting

Set DSW10-1 correctly for end resistance cancellation.

Pin No.

DSW7

DSW3

DSW6

RSW1

Unit C

(No.2 Unit)

DSW1 (PCB1)

Setting is required.

Setting Before Shipment

DSW1

Tens Digit

Set the unit number of outdoor unit at each refrigerant cycle. (Setting before shipment is unit 0.)

134ON265134ON265

Ref. Cycle No. Setting Function Setting

Setting Position

RSW1

3214ON56

Last Digit

DSW4 (PCB1)

Setting is required.No setting is required.

Setting Before Shipment

3214ON56

DSW7 (PCB1)

Setting is required.

230V, 460V Unit:

DSW3 (PCB1)

No setting is required.

Setting Before Shipment

IMPORTANT NOTICE

Do not change DSW3 setting. Otherwise, it may cause abnormal operation.

Test Run and Service Setting

For Test Run, Function Setting and External Input/Output Setting

Setting Item Pin No.

Test Cooling Operation Test Heating Operation

Compressor Forced Stop Function Setting External Input/Output

Setting Refrigerant Recovery/ Vacuum Mode

Power Supply Setting

No setting is required.

230V Setting Before Shipment208V Unit:

3214

Power Supply Voltage and System Setting

208V 230V 460V

3214

DSW8 (PCB1)

Setting is required.

Setting Before Shipment

321

3214

High Static Pressure Mode Setting

Turn ON the DIP switch when using the below functions.

Setting Item Pin No.

HSP Setting: 0.12 in. W.G. (30Pa)

HSP Setting: 0.24 in. W.G. (60Pa)12

HSP Setting: 0.32 in. W.G. (80Pa) 1, 2

IMPORTANT NOTICE

When adopting the air outlet duct (field supplied), make sure to set DSW8.

DSW101 (INV1, 2)

No setting is required.

Setting Before Shipment

Turn ON the DIP switch when using the below functions.

Setting Item Pin No.

Cancellation of Current Detection

INV No. Setting/Service Setting

INV1 INV2

3214ON56 3214ON56

Setting Before Shipment

IMPORTANT NOTICE

If Cancellation of Current Detection is set, make sure to return the setting, after

service works.

(+ PSW4 for 3sec.)

3214

1, 2

4, 5

4, 6

Figure 7.2 DSW Setting

P5417009-rev.6

Page 69

● Setting for Transmitting

Setting Position

slotted screwdriver

Turn ON No. 2 pin. Set Dial No.5.

to the Indoor Units

Setting Example

Use the following settings for the outdoor unit numbers, refrigerant system numbers and end terminal resistance for this H-LINK system.

● Setting of Outdoor Unit Number (No.)

If there are combined outdoor units, set DSW6 as shown below.

Base Unit

(Before Shipment)

ON OFF

1 2 3 4

ON OFF

Unit A (No.0)

1 2 3 4

Combination of Base Unit

Unit B (No.1)

ON OFF

1 2 3 4

ON OFF

Unit C (No.2)

1 2 3 4

NOTE:

Be sure to set DIP switch DSW6-No.4 for using the low ambient kit. Refer to the “Installation Manual” for LAK or “Service Manual” for the outdoor unit.

● Setting of Refrigerant System Number

In the same refrigerant system, set the same refrigerant system number for the outdoor unit and the indoor units as shown below. Setting outdoor unit refrigerant system number is required only for the main unit. The sub unit settings are not required.

As for setting indoor unit refrigerant system number, set RSW2 and DSW5 on the indoor unit PCB.

Setting Switch

1 digit

Set by inserting

into the groove.

10 digit

ON OFF

123456

Outdoor Unit DSW1 RSW1

Indoor Unit (H-LINK II)

DSW5 RSW2

Example: If Setting Refrigerant System No. 25

OFF

3214ON56

DSW and RSW setting before shipment is 0. Maximum in setting refrigerant system number is 63.

Refrigerant System for This Outdoor Unit

Set to the same refrigerant system No.

Indoor

Unit

Wired Controller

P5417009-rev.6

DSW1:

RSW1:

DSW6:

Setting is not required.Setting is not required.

OFF

3214ON56

ON OFF

3214

Setting of Sub Unit (Unit C)

Set the refrigerant system No. not to duplicate no. with the other outdoor units.

Outdoor Unit

DSW1:

RSW1:

DSW6:

OFF

3214ON56

ON OFF

3214

Setting of Sub Unit (Unit B)

Communication Line (No Polarity)

H-LINK II

Centralized Controller

Main UnitSub Unit Sub Unit

OFF

DSW1:

RSW1:

DSW6:

ON OFF

Setting of Main Unit (Unit A)

H-LINK II

3214ON56

2 3

3214

Ref. System No. 25

(Factory-Setting)

Maximum Number of Connectable Outdoor Units and Indoor Units (for H-LINK II)

Outdoor Unit 64 Indoor Unit 160

For installing the outdoor unit

and the indoor unit on the same communication cable, which cannot be used for H-LINK II, maximum number of connectable indoor units is 128.

Page 70

● DSW7SettingforRatedVoltage

Communication Line (No Polarity) H-LINK II

Outdoor Unit

DSW7 is used for setting the rated voltage for the outdoor unit as

shown at right. When the site power supply voltage is different from factory setting, a DSW7 setting is required.

CAUTION:

The same voltage setting is required to the main unit and sub unit(s).

Voltage DSW7 Setting

208V

230V

460V

OFF

ON OFF

1 2 3 4

● Setting of End Terminal Resistance

Before shipment, No.1 pin of DSW10 (for the setting of end terminal

resistance) is in the “ON” position. In the case of one refrigerant system in the same H-LINK II,

set all DSW10 No.1 pins to the “OFF” position except in the main

outdoor unit A.

Setting of End Terminal Resistance

DSW10

Before Shipment Cancellation

OFF

12 12

In a situation of one refrigerant system in the same H-LINK II, set all DSW10 No.1 pins to the “OFF”

position except the main outdoor unit A.

(Unit Combination)

Indoor

Unit

Set the end terminal.

Unit B (Sub)

DSW10

Unit C (Sub)

DSW10

Unit A (Main)

Cancel the end terminal setting.

DSW10

OFF

If more than one refrigerant system is in the same H-LINK II, set all DSW10 No.1 pins to the “OFF”

position except the main outdoor unit A.

Cancel the end terminal.

Outdoor Unit (Base Unit)

DSW10

Communication Line (No Polarity)

H-LINK II

Wired Controller

Indoor

Unit

Outdoor Unit (Unit Combination)

Unit A (Main)

Indoor

Unit

Outdoor unit being set end terminal

Set the end terminal.

DSW10

Cancel the end terminal setting.

DSW1012DSW10

Unit B (Sub)

Unit C (Sub)

Cancel the end terminal. Cancel the end terminal.

Outdoor Unit (Unit Combination)

DSW10

Unit A (Main)

Indoor

Unit

DSW10

Unit B (Sub)

Outdoor Unit (Base Unit)

DSW10

Indoor

Unit

P5417009-rev.6

Page 71

Function Setting

•

External Input/Output and Function Setting

Make sure to perform external input/output and function setting while the outdoor unit is stopped. It cannot be set while the outdoor unit is operating or check mode.

External Input/Output Setting

Start of Setting

Turn ON DSW4-No.4. Turn ON DSW4-No.6.

For the setting mode, refer to below.

Exit Setting Mode

Turn OFF DSW4-No.6 during indicated External Input/Output Setting Mode. Turn OFF DSW4-No.4.

After setting, confirm DSW4 setting is same as setting before shipment.

External Input/Output Setting

By pressing the buttons PSW3 ( ) and PSW5 ( ), the function No. can be selected. PSW4 ( ): forward, PSW2 ( ): backward

Fill out the selected function setting No. in the space of the table as shown.

Item SEG2 SEG1 SET

Input Setting 1

CN17 [1-2 pin]

Input Setting 2

CN17 [2-3 pin]

Input Setting 3

CN18 [1-2 pin]

Output Setting 1

CN16 [1-2 pin]

Output Setting 2

CN16 [1-3 pin]

Before shipping, the input/output function settings are specified to each input/output terminal according to above table. The details of function No. and external input/output settings are as shown below.

Setting of External Input and Output Function

Function

No.

1Fixing Heating Operation Mode Operation Signal 2Fixing Cooling Operation Mode Alarm Signal 3Demand Stoppage Compressor ON Signal 4Outdoor Fan Motor Start/StopDefrost Signal 5 Forced Stoppage 6Demand Current Control 40% 7Demand Current Control 60% 8Demand Current Control 70% -

9Demand Current Control 80% 10 Demand Current Control 100% 11 Low Noise Setting 112 Low Noise Setting 213 Low Noise Setting 3-

External Abnormality Detection

Setting

0No Setting No Setting

The same input/output function setting cannot be set to different input/output terminals. If set, a setting of larger function number becomes invalid. Example: When setting of input 1 and input 2 are same, input 2 will be invalid.

Input Output

Function No.14 is valid only when applied to Input Setting 3.

Function Setting

Start of Setting

Turn ON DSW4-No.4. Turn ON DSW4-No.5.

For the setting mode, refer to below.

Exit Setting Mode

Turn OFF DSW4-No.5 during indicated Function Setting Mode. Turn OFF DSW4-No.4.

Example

(Setting Before Shipment)

Release “Menu Mode” after the setting is completed. Otherwise, the air conditioner may not operate appropriately.

Item SEG2 SEG1 SET Item SEG2 SEG1 SET

Circulator Function at

Heating Thermo-OFF

Night-Shift

(Low Noise)

Cancellation of Outdoor

Ambient Temperature Limit

Defrost for Cold Area

(Change of Defrost Condition)

SLo (Fan Speed)

Defrost Setting

Cancellation of

Outdoor Unit Hot Start

Priority Capacity Mode

Minimum Evaporating

Temperature Setting for Cooling

Compressor Frequency

Control Target Va lue for Heating Indoor Expansion Valve

Control Target Va lue for Cooling Indoor Expansion Valve

Control Target Va lue for Heating Indoor Expansion Valve

Opening during Heating Operation Stoppage Indoor Expansion Valve

Opening during Heating Thermo-OFF Indoor Expansion Valve

Initial Opening during Heating Thermo-ON

Indoor Expansion Valve

Initial Opening for Cooling

Outdoor Expansion Valve

Initial Opening for Heating

Low Noise Setting

Demand Function Setting

Wave Function Setting

Protection of Decrease

in Outlet Temperature for Cooling

Outlet Temperature Control

(DOAS)

Adjustment of Fan Rotation

(for multiple installation)

Not Prepared

Thermo-OFF Setting

for Outdoor Unit After Defrosting Operation

Function Setting

By pressing the push-switches PSW3 ( ) and PSW5 ( ), the setting can be changed. PSW4 ( ): forward, PSW2 ( ): backward Refer to the Service Manual for more details.

Fill out the selected function setting No. in the space of the table as shown.

Not Prepared

Crankcase Heater Control

during Stoppage

Indoor Fan Hot Start Period

Setting

Intermittent Operation

of Outdoor Fan Motor

Indoor Expansion Valve Control Target Value

for Cooling (Only for 4-Way Cassette Model)

Indoor Expansion Valve

Opening Lower Limit during Heating SW-OFF

Not Prepared

Forced Defrosting after

Enforced Stoppage during Defrosting Cycle

Not Prepared

Convert Unit in

Checking Mode

Permit Indoor Fan Operation

during Forced Stoppage

Not Prepared

Example

P5417009-rev.6

Page 72

8. Additional Refrigerant Charge

Stop Valves for Gas Pipe

Access Port

8.1 Airtight Test

(1) Check to ensure that the stop valves for high/low pressure gas, low pressure gas and liquid pipes are

closed completely before airtight test.

(2) The refrigerant used for this outdoor unit is R410A. Use the manifold gauge and the charging hose for

exclusive use of R410A.

Tightening Check of Stop Valves

After connecting the pipe, remove the caps of stop valves for high/low pressure gas, low pressure gas and liquid. Tighten the open-close stop valve in the closing direction according to the following tightening torque.

Operation of Stop Valves Caution

(a) Remove the stop valve caps before performing the airtight test after connecting the refrigerant

piping. Tighten the stop valve in clockwise direction.

(b) Perform the work after warming the stop valve with a hair dryer etc. when controlling the stop valve

in a cold area. (The stop valve O-ring will harden at low temperature, causing the O-ring material to contract by volume, and refrigerant leakage can occur.)

(5.0 N·m)). (A back seat (hard stop), is not provided, allowing complete removal of the valve stem.)

(d) Tighten caps securely according to the following torque specications after each stop valve is

opened.

Model

96 - 144

168, 192

Do NOT put two wrenches here.

Stop Valve for Liquid Pipe

Position both wrenches here.

Stop Valve Flare Nut Cap Access Port

High/Low Pressure

Gas Valve

13.3 - 16.2

(18.0 - 22.0)

Gas Valve

13.3 - 16.2

(18.0 - 22.0)

18.4 - 22.9

(25.0 - 31.0)

(High/Low Pressure)

Stop Valve for Gas Pipe (Low Pressure)

Flare Nut

Low

Pressure

Liquid

Valve

5.2 - 6.6

(7.0 - 9.0)

6.6 - 8.1

(9.0 - 11.0)

Hexagonal Wrench

To open or close the stop valve

Tightening Torque [ft·lbs (N·m)]

Liquid

Valve

24.3 - 31.0

(33.0 - 42.0)

36.9 - 45.7

(50.0 - 62.0)

50.2 - 62.0

(68.0 - 84.0)

Gas

Valve

36.1 - 42.8

(49.0 - 58.0)

(33.0 - 42.0)

(50.0 - 62.0)

Cap

O-ring (Rubber)

Liquid

Valve

24.3 - 31.0

36.9 - 45.7

Only the charging hose for R410A can be connected.

Refrigerant Pressure

Stop Valve

Counterclockwise...Open

Clockwise...............Close

Closed before Shipment

Gas

Valve

6.6 - 10.3

(9.0 - 14.0)

Liquid

Valve

10.3 - 13.3

(14.0 - 18.0)

Hexagonal

Wrench Size

inch (mm)

Gas

Liquid

Valve

3/16

(4)

3/8

(10)

3/16

(5)

P5417009-rev.6

Page 73

Airtight Test Method

Procedure

For Pipes from Bottom Base

Low Pressure Gas Pipe

Piping Cover

Liquid Pipe

Gas Pipe

For Pipes from Front Side Piping Cover

(1) Connect the manifold gauge to the access port of the liquid line and the gas line stop valves using

charging hoses with a vacuum pump or a nitrogen cylinder. Perform the airtight test. Do not open the stop valves. Apply nitrogen gas pressure of 601 psi (4.15MPa).

For checking gas leakage, use the leak detector or foaming agent. If there is any leakage, x the

leaking part.

(2) Caution for checking gas leakage, do not use a foaming agent which generates ammonia.

Additionally, do NOT use any household detergent as foaming agent with potentially unknown or harmful ingredients. Use the recommended foaming agent to detect leaking refrigerant gas is shown below.

Completion of

Ref. Piping

Applying

Nitrogen Gas

Pressure Decrease

Repairing of

Leakage Part

Check of

Pass

Recommended

Foaming Agent

Guproex

Manufacturer

Yokogawa

& CO.,Ltd

CAUTION:

Nitrogen Gas should be sufciently charged for each access port (high/low pressure gas line side, low

pressure gas line side (for heat recovery system only), and for liquid line side). If not performed in this manner, the expansion valve for the outdoor unit, indoor unit, or change-over box can close up, making any airtight test impossible.

Be sure to use nitrogen gas for airtight test. If other gases such as oxygen gas, acetylene gas or

uorocarbongasareaccidentallyused,itmaycauseanexplosionorgasintoxication.

Insulation Work

(1) Securely insulate the high/low pressure and low pressure gas piping side and liquid piping side

individually.

Make sure to insulate the union are nut for the piping connection as well.

(2) Seal the gap between the bottom base or front piping cover and pipes with the insulation.

CAUTION:

If the gap is not sealed, damage can occur from rain, snow, animals, or insects that can gain entry.

Liquid Pipe

P5417009-rev.6

High/Low Pressure Gas Pipe

Seal this gap with insulation (field-supplied).

Low Pressure Gas Pipe

High/Low Pressure

Page 74

8.2 Vacuuming

NOTICE

Connecting

Connect a manifold gauge, vacuum gauge and vacuum pump to the access port (High/Low Pressure Gas Stop Valve, Low Pressure Gas Stop Valve and Liquid Stop Valve).

Triple Evacuation Method

According to the following < Step 1 > < Step 2 > < Step 3 > in order, conduct vacuum drying work.

< Step 1 > (1) Vacuum until the pressure reaches 2000 microns (2 mmHg).

(2) Pressurize with nitrogen up to 50 PSIG (0.3 MPaG) for 15 minutes.

(3) Release pressure to atmosphere level as less than 5 PSIG (0.03 MPaG).

< Step 2 > (1) Vacuum until the pressure reaches 1000 microns (1 mmHg).

(2) Pressurize with nitrogen up to 50 PSIG (0.3 MPaG) for 15 minutes.

(3) Release pressure to atmosphere level as less than 5 PSIG (0.03 MPaG).

< Step 3 > (1) Vacuum until the pressure reaches 500 microns (0.5 mmHg).

(2) Stop vacuum pump.

(3) Check that the vacuum 500 microns (0.5 mmHg) can maintain for one hour.

1. If tool or measuring instruments come into contact with the refrigerant, use the tools or the measuring instruments exclusively for R410A.

2. Do not perform vacuum pumping work with valves of the outdoor units open. Otherwise, the refrigerant charged before shipment may leak and it may result in failure. If moisture remains inside the pipes, the compressor may be damaged.

P5417009-rev.6

Page 75

NOTICE

8.3 Charging Work

Refrigerant Pressure

Access Port

(1) An additional refrigerant charge is required according to total piping length. Refer to Table 8.1.

(2) After vacuum pumping work, check that the high/low pressure gas valve, and liquid stop valve are fully

closed. Charge the additional refrigerant from the access port of liquid stop valve (acceptable error must be within 1.1 lbs (0.5 kg)).

(3) After refrigerant has been charged, fully open the liquid stop valve and gas stop valves.

Gas remaining at the O-ring or screw component may emit a hissing sound when removing the stop

valve cap. However, this is not leaking gas.

(4) If it proves impossible to dispense the specied (charged) quantity of refrigerant, follow the procedure

below.

(a) Fully open the stop valve at the gas line side (both stop valves of high/low pressure and low

pressure side).

Do not apply excessive force to the stop valve after fully opening. Otherwise, the stop valve will blow out due to refrigerant pressure. At the test run, fully open the stop valve. Otherwise, these devices will be damaged. (It is closed before shipment.)

Caution for Opening Stop Valve

1. Do not apply an excessive force after fully opening the stop valve (Tightening Torque: < 3.7 ft·lbs (5.0 N·m)). (This valve does not have a hard stop when opening, and allows for the complete removal of the valve stem.)

2. Securely tighten the caps according to the torque specs (Section 8.1-(2)-(d) after each stop valve is opened.

Hexagonal Wrench

o open or close stop valve)

Cap

O-ring (Rubber)

(Only the charging hose for R410A can be connected.)

Stop Valve

Counterclockwise...Open

Clockwise...............Close

Closed before shipment

Hexagonal Wrench Size [inch (mm)]

Model Gas Valve Liquid Valve

72 - 144

168, 192

3/8

(10)

3/16

(4)

3/16

(5)

P5417009-rev.6

Page 76

(b) Operate the compressor in the cooling mode and charge the additional refrigerant from the access

Manifold

Multi-Kit

port of the liquid stop valve. An acceptable error must fall within 1.1 lbs (0.5 kg). At this time, keep

the liquid stop valve slightly open. (c) After the refrigerant is charged, fully open the liquid stop valve and the gas stop valve. (d) Carefully calculate any additional refrigerant quantity for charging. If the quantity of additional

refrigerant is not correct, it might cause a compressor failure. The additional refrigerant must be

charged in a liquid condition. (e) Refrigerant charge from the access port on the gas stop valve can lead to compressor failure.

Be sure to charge refrigerant from the access port on the liquid stop valve.

Stop Valve (for Liquid)

Outdoor Unit C

Stop Valve (for High/Low Pressure Gas)

Stop Valve (for Low Pressure Gas)

Stop Valve (for Liquid)

Charge the correct refrigerant quantity according to Table 8.1. If not, a compressor may be damaged due to an excess or

insufcient refrigerant charge.

Refrigerant charge from access port of gas stop valve may lead to compressor failure. Be sure to charge refrigerant from the access port of liquid stop valve.

Outdoor Unit BOutdoor Unit A

Stop Valve (for High/Low Pressure Gas)

Stop Valve (for Low Pressure Gas)

Stop Valve (for Liquid)

Stop Valve (for High/Low Pressure Gas)

Stop Valve (for Low Pressure Gas)

Low Pressure Gas Line

Liquid Line

Gauge

Vacuum Pump

High/Low Pressure Gas Line

CH-Box

Insulation

[Cover the gas and liquid pipe with insulation.]

Insulate the are nut and union

of the piping connection with insulation.

Check to ensure that there is no gas leakage. If a large refrigerant leakage occurs, it will

cause difculty with breathing or

harmful gases would occur if a

re was being used in the room.

Nitrogen Tank (for Nitrogen Blow during Brazing and Airtight Test)

Refrigerant Cylinder (R410A)

Scale

Indoor Unit

Insulate the liquid piping and gas piping completely to avoid decreasing of performance and condensation on the surface of the pipe.

P5417009-rev.6

Page 77

8.4 Additional Refrigerant Charge Calculation

Table 8.1 Additional Refrigerant Charge Calculation

Although this unit has been charged with refrigerant, an additional refrigerant charge is required according to piping length.

Determine what additional charge of refrigerant according to the following procedures, and charge it into the system. Record the additional refrigerant charge to facilitate maintenance and servicing activities thereafter.

(1) Calculating Method of Additional Refrigerant Charge [WT lbs (kg)]

No. Symbol Step

1 W1 Additional Refrigerant Charge Calculation for Liquid Piping [W1 lbs (kg)]

Pipe Diameter

[inch (mm)]

7/8 (22.2) × 0.24 (0.36) =

3/4 (19.05) × 0.17 (0.26) =

5/8 (15.88) × 0.11 (0.17) =

1/2 (12.7) × 0.074 (0.11) =

3/8 (9.52) × 0.038 (0.056) =

1/4 (6.35) × 0.016 (0.024) =

Total Piping Length

[ft (m)]

Total Additional Charge For Liquid Piping =

Refrigerant Charge

for 1 ft Pipe [lbs/ft (kg/m)]

Additional Charge

[lbs (kg)]

If the calculated charge above is less than the charge shown in the table below, then add W1 as the additional refrigerant charge shown below.

Outdoor Unit Capacity

(MBH)

Minimum Additional Ref. Charge [lbs (kg)]

072-144 168, 192 216-288 312, 336 360 384-432

6.6

(3.0)

8.8

(4.0)

13.2 (6.0)

15.4 (7.0)

17.6

(8.0)

19.8 (9.0)

2 W2 Depending on connection of indoor unit capacity, additional refrigerant charge is required.

Select adequate refrigerant charge from the table below.

Additional Refrigerant Charge for Each Indoor Unit Connected [W2 lbs (kg)]

Indoor Unit Capacity

(MBH)

Additional Ref. Charge [lbs (kg)/unit]

006, 008 012-054

0.7

(0.3)

1.1

(0.5)

Maximum additional refrigerant charge must not exceed 13.2 lbs (6.0kg).

3 W3 Calculation Method for Additional Refrigerant Charge [W3 lbs (kg)]

The additional refrigerant charge must be 2.2 lbs (1.0kg) per indoor unit which is 060 MBH or more.

unit × 2.2 lbs (1.0kg)/unit =

4 W4 The Ratio of Indoor Unit Connection Capacity (Indoor Unit Total Capacity/Outdoor Unit

Capacity) Additional Charge [W4 lbs (kg)]

Determine the ratio of indoor unit connection capacity.

Condition Additional Charge [lbs (kg)]

I.U. Capacity Ratio is less than 100% 0.0 (0.0)

I.U. Capacity Ratio is 100% or more 1.1 (0.5)

5 W5 Depending on connection of outdoor unit model, additional refrigerant charge is required.

Select adequate refrigerant charge from the table below. [W5 lbs (kg)]

Outdoor Unit Model Additional Charge [lbs (kg)]

(H,Y)VAHR192B(3,4)2S

2.2 (1.0)(H,Y)VAHR336B(3,4)2S

(H,Y)VAHR360B(3,4)2S

6 W6 If Change-Over Boxes Multiple Branch type are connected, additional refrigerant charge is

required. Select adequate refrigerant charge from the table below. [W6 lbs (kg)]

Change-Over Box Model Additional Charge [lbs (kg)/unit]

COB04M132B22S 0.3 (0.1)

COB08M264B22S 0.5 (0.2)

COB12M264B22S 0.7 (0.3)

7 WT

Calculation of Additional Charge [WT lbs (kg)] =

W1 + W2 + W3 + W4 + W5 + W6 =

Ensure that the total additional charge WT does not exceed the maximum additional refrigerant charge as shown in the table on the following page.

Additional

Charge

lbs (kg)

P5417009-rev.6

Page 78

Max. Additional Refrigerant Charge Quantity Allowed

NOTICE

Outdoor Unit Capacity (MBH) 072 096 - 144 168 192 216 - 432

Max. Additional Ref. Charge [lbs (kg)] 79.4 (36.0) 88.2 (40.0) 112.5 (51.0) 114.7 (52.0) 138.9 (63.0)

Initial Ref. Charge Amount of O.U. (Before Shipment) [W0 lbs (kg)]

Outdoor Unit Capacity (MBH) 072 096 120 144 168 192

W0 Outdoor Unit Ref. Charge [lbs (kg)] 15.9 (7.2) 19.6 (8.9) 21.8 (9.9) 23.6 (10.7) 24.9 (11.3) 25.6 (11.6)

W0 is the outdoor unit refrigerant charge prior to shipment. If there is a combination of base units, calculate the total refrigerant charge prior to shipment of those combined outdoor units.

(2) Record of Additional Charge

Total refrigerant charge of this system is calculated in the following formula.

Total Ref. Charge = WT lbs (kg) + W0 lbs (kg) =

When refrigerant is recovered or charged due to repairs, operating, or adjusting the unit, record the refrigerant quantity again.

lbs ( kg)

Emissions of the uorocarbons without any reason are prohibited

For disposal and maintenance of this product, recovery of uorocarbons is required.

● Special Attention Regarding Refrigerant Gas Leakage

Make sure that the entire VRF system meets ASHRAE Standard 15, or any local codes, regarding Safety.

The ASHRAE Standard 15-2013 provides safeguards for life, limb, health, property, and prescribes safety requirements. The standard is recognized as the main guide for personal safety involving refrigeration systems. It strives to ensure a safe application of refrigerant systems by limiting the maximum charge as follows so that a complete discharge due to a leak into a small, occupied, and enclosed room can never exceed the allowable limit for the room.

P5417009-rev.6

Page 79

9. Test Run

NOTICE

Test Run should be performed in accordance with Section 9.2. Use Table 9.1 for recording the Test Run.

An electrical shock will occur if there is residual voltage. Turn OFF power at the power supply completely before attempting any electrical maintenance work. Verify that no residual voltage exists after turning OFF the power at the power supply.

Do not activate the system until all issues have been examined and cleared. Test Run of indoor unit: refer to the installation and maintenance manual which is attached to the indoor unit and change-over box.

9.1 Before Test Run

(1) Check to ensure that the refrigerant piping and communication lines between indoor and outdoor units

are connected into the same refrigerant system. If not, the result will be abnormal operation with a potentially serious accident. Verify that all DIP switch settings for the refrigerant system numbers: (DSW1 and RSW1 [O.U.], DSW5 and RSW2 [I.U.]) and the unit number (RSW) for indoor units are applicable to the system.

Conrm that all DIP switch settings on the printed circuit board for indoor and outdoor units are correct.

Pay special attention to the setting for outdoor unit number, the refrigerant system number, and end terminal resistance. Refer to Section 7, “Electrical Wiring.”

(2) Verify that electrical resistance is more than 1 megaohm, by measuring the resistance between ground

and the terminal for electrical components. If the electrical resistance is less than 1 megaohm, do not

operate the system until the source of electrical current outow is found and xed. (Refer to “Caution

for Insulation Resistance” for details.)

Do not impress the voltage on the terminals for communication lines (Outdoor Unit: TB2 1, 2, 3, 4 / Indoor Unit: TB2 A, B, 1, 2 / Change-Over Box: TB2 1, 2, 3, 4). Otherwise, failure can result.

(3) Verify that each wire, L1, L2, and L3, is correctly connected at the power supply.

If any one of those is incorrectly connected, the unit will not operate and the wired controller will display the alarm code “05.” In this case, check and change the phase of the power supply according to the spec sheet attached to the inside back surface of the service cover.

(4) Apply power to outdoor unit(s) at least 12 hours prior to operation of the system to allow for adequate

pre-heating of the compressor oil. The outdoor unit does not operate for at most four hours after power supply (Stoppage Code d1-22). If operation resumes within four hours, release the protection control as follows:

1. Supply power to the outdoor unit.

2. Wait for 30 seconds.

3. Push PSW5 on the outdoor PCB for more than three seconds in order to release the d1-22.

If using a wired controller for release:

* Press and hold “Menu” and “Back/Help” simultaneously for at least 3 seconds. The test run menu

is displayed.

* Press “

control.

For other controllers, refer to the manual attached to each controller.

(5) Be sure to close the service cover at the front lower side when the test run is performed.

” or “ ” to select “Cancel Preheating Control”. Press “OK” and cancel the pre-heating

P5417009-rev.6

Page 80

Caution for Insulation Resistance

NOTICE

If the total unit insulation resistance is lower than one megaohm, the compressor insulation resistance may be lower, due to refrigerant being retained in the compressor. This can occur if the unit has not been used over prolonged periods of time.

1.Disconnectthecablestothecompressorandmeasuretheinsulationresistanceofthecompressor

itself. If the resistance value is over one megaohm, then an insulation failure has occurred in other electrical parts.

2. If the insulation resistance is less than one megaohm, reconnect the compressor cables from the inverter PCB. Then, turn on the main power to apply current to the crankcase heater.

Afterapplyingcurrentformorethanthreehours,measureinsulationresistanceagain.(Depending

on the air conditions, length of piping, or refrigerant conditions, it may be necessary to apply the current for a longer period of time.)

IftheGFCIisactivated,checktherecommendedsizeshowninTable7.1.

Conrm that eld-supplied electrical components (main switch fuse, fuse-free breaker, GFCI breakers, wires,

conduit connectors and wire terminals) have been properly selected according to the electrical data shown in Table 7.1, and ensure that these components comply with national and local electrical codes.

9.2 Test Run

This test run method is for the wired controller. As for other controllers, refer to Installation and Maintenance Manual attached to each controller.

(1) Check to ensure that stop valves for high/low pressure gas, low pressure gas and liquid of the outdoor

unit are fully opened. (In the case of combined outdoor units, check to ensure that all stop valves of the outdoor units are fully opened.)

(2) Perform the test run of indoor units one by one sequentially, and then check the accordance of the

refrigerant piping system and the electrical wiring system. (If the multiple indoor units are operated simultaneously, the system accordance cannot be inspected.)

(3) Perform the test run according to the following procedure. Ensure that the unit operates without any

problem.

If two controllers (main and sub) are installed to the system, perform the test run from the main

controller.

Test Run by Wired Controller

(a) Press and hold “Menu” and “Back/Help” simultaneously for at least 3 seconds. The test run menu

will be displayed.

(b) Select “Test Run” by pressing “

” and press “OK”.

The test run screen will be displayed.

● The total number of indoor units connected are displayed on the Liquid Crystal Display (LCD). A twin combination

Test Run Screen

Test Run Setting: 2 units

MODE : COOL

SPEED : AUTO

(one set with two indoor units) is identied as “2 units”,

and a triple combination (of one set with three indoor

units) is identied as “3 units”.

When a “00 unit” is identied, the auto-address function

may be activated. Cancel “Test Run” mode and reset it.

● If the indicated number is not equal to the actual number of connected indoor units, the autoaddress function is not performed correctly due to incorrect wiring, or electronic noise (EMI).

Turn OFF the power supply, and correct the wiring after checking the following areas: (Do not repeat turning ON and OFF within 10 seconds.)

* The power supply for the indoor unit is NOT turned ON or there is incorrect wiring.

* A loose connection between indoor units or the wired controller. * Incorrect Setting of Indoor Unit Address (The indoor unit address is overlapped.)

Back

ON RtrnSel. Adj.

P5417009-rev.6

Page 81

● Press “

On/Off”. The Test Run operation will start. The operation mode, the airow volume,

the airow direction and the Test Run time can be set on the Test Run screen. Select the item by

pressing “ ” and set the detail by pressing “ ”.

The default setting for the Test Run time is a two-hour OFF timer.

● Check the temperature conditions. Unit operation cannot be performed if the conditions are out of range. Refer to the table below for a working range.

Example

The cooling operation is not performed if the outdoor temperature is below -4

F DB (-20oC DB).

Temperature

F WB (oC WB) 59 (15) ~ 73 (23)

F DB (oC DB) 23 (-5) ~ 122 (50)

F DB (oC DB) 14 (-10) ~ 109 (43)

F DB (oC DB) -10 (-23) ~ 109 (43)

F DB (oC DB) 59 (15) ~ 80 (27)

F WB (oC WB) -13 (-25) ~ 59 (15)

F WB (oC WB) 59 (15) ~ 73 (23)

F DB (oC DB) 23 (-5) ~ 75 (24)

F DB (oC DB) 14 (-10) ~ 75 (24)

F DB (oC DB) -10 (-23) ~ 75 (24)

F DB (oC DB) 59 (15) ~ 80 (27)

F WB (oC WB) 22 (-6) ~ 59 (15)

F WB (oC WB) 12 (-11) ~ 59 (15)

F WB (oC WB) -11 (-24) ~ 59 (15)

Cooling Operation Range

Heating Operation Range

Cooling

Cooling & Heating Operation Range

Heating

DB: Dry Bulb, WB: Wet Bulb

Indoor

Outdoor

with Snow Protection Hood

with Low Ambient Kit

Indoor

Outdoor

Indoor

Outdoor

with Snow Protection Hood

with Low Ambient Kit

Indoor

Outdoor

with Snow Protection Hood

with Low Ambient Kit

(d) Press “

” or “ ”, select “LOUV.” and select “ ” (auto swing) by pressing “ ” or “ ”. The auto-swing operation will start. Check the operating sound at the louvers. If an abnormal sound emanates from the louvers, it may be caused by a deformation in the decorative panel due to incorrect installation. In this case, carefully reinstall the decorative panel without further damage. If no weird sounds are generated, press “

” or “ ” again to halt the auto-

swing operation.

(e) Though the temperature detections by the thermistors are invalid, the protection devices are

valid during the Test Run. If an alarm is triggered, refer to Table 9.2, Alarm Code and perform troubleshooting. Then perform the Test Run again

(f) According to the label “Checking Method by Seven-Segment Display” attached to the back side

of the service cover of the outdoor unit, check the temperature, the pressure and the operation

frequency of the specied portions, and check the number of the connected indoor units on

7-segment displays.

(g) To nish the Test Run, wait two hours (as a default setting) or press “

On/Off” switch again.

● With the operation LED ashing two seconds ON and two seconds OFF, this is an indication that

the system is searching for irregularities in communication between indoor units and the wired controller. This could result in loose or disconnected wires, components, and incorrect wiring.

● A small sound may be heard from the outdoor unit after turning ON at the power supply

because the electrical expansion valve is activated to adjust the opening. Therefore, there is no mechanical fault with the unit.

● Sound may be emitted from the outdoor unit for a few seconds after running or stopping the

compressor, starting or nishing the defrosting, and so on. It generates because of the pressure

difference inside the compressor piping. Therefore, there is no problem with the unit.

DoNOTruntheairconditionerunitstochecktheelectricalwiringuntiltheTestRunpreparations

have been completed.

P5417009-rev.6

Page 82

Test Run from Outdoor Unit Side

123456

The procedures for the test run from the outdoor unit side are shown below. Setting this DIP switch is possible with the power supply ON.

SettingofDIPSwitch(FactorySetting)

DSW4

Switch for Setting of Service Operation and Function

1. Test Run

2. COOL/HEAT Setting

Note that the darkened squares here denote that the

switch is in the "OFF"

position.

ON OFF

(ON: Heating Operation)

3. Not Used

4. Manual Compressor OFF

5. Function Setting

6. External Input/Output Setting

● DonottouchanyotherelectricalpartwhenoperatingswitchesonthePCB.

● Donotattachordetachaservicecoverwhenthepowersupplyfortheoutdoorunitissuppliedand

the outdoor unit is operated.

● TurnallDIPswitchesofNo.1to4pinsofDSW4OFFwhenthetestrunoperationiscompleted.

P5417009-rev.6

Page 83

Test Run

123456

Outdoor Unit

Test Run

Indoor

DIP Switch Setting Operation Remarks

1. Setting of Operation Mode

Cooling: Set No.2 pin of DSW4 OFF.

ON OFF

Heating: Set No.2 pin of DSW4 ON.

ON OFF

2. Starting Test Run Set No.1 pin of DSW4 ON and the operation is started after a few ~ 20 seconds.

When heating operation, leave

No.2 pin of

DSW4 at ON.

ON OFF

1. The indoor unit automatically starts operating when the test run of the outdoor unit is set.

2. The ON/OFF operation can

be performed from the wired controller or No.1 pin of DSW4 of the outdoor unit.

3. The operation continues for

two hours without Thermo-OFF.

* Note that indoor units operate in

conjunction with the test run operation for the outdoor unit.

* If the test run is started from the

outdoor unit and stopped from the wired controller, the test run function of the wired controller is canceled. However, the test run function of the outdoor unit is not canceled. Check to ensure that the No.1 pin of DSW4 of the outdoor

unit PCB is turned OFF.

* If multiple indoor units are connected

with one wired controller, perform the test run operation individually for each refrigerant system, one by one. Then, make sure to turn the power

supply OFF for the indoor units in other

refrigerant systems not selected for the test run operation.

Unit

Manual

OFF of

Comp.

1. Setting *Compressor Manual OFF: Set No.4 pin of DSW4 ON.

ON OFF

2. Canceling *Compressor ON:

Set No.4 pin of DSW4 OFF.

ON OFF

1. When No.4 pin of DSW4 is ON during compressor operation, the compressor shuts down immediately and the indoor unit is assumes the condition of

Thermo-OFF.

2. Once No.4 pin of DSW4 is placed

back into the off position, the compressor will be enabled for restart following a three minute safety delay.

Power OFF.

* A setting of DSW4 is not required for the

test run from the wired controller.

* Do not repeat compressor ON/OFF

frequently.

P5417009-rev.6

Page 84

Table 9.1 Test Run and Maintenance Record

MODEL: SERIAL. No. COMPRESSOR MFG. No.

CUSTOMER'S NAME AND ADDRESS: DATE:

1. Is the rotation direction of the indoor fan correct?

2. Is the rotation direction of the outdoor fan correct? (Correct direction is counter clockwise.)

3. Are there any abnormal compressor sounds?

4. Has the unit been operated at least twenty (20) minutes?

5. Check Room Temperature

Inlet: No. 1 DB /WB

Outlet: DB /WB

Inlet: No. 5 DB /WB

Outlet: DB /WB

No. 2 DB /WB

No. 6 DB /WB

DB /WB

No. 3 DB /WB

No. 7 DB /WB

DB /WB

6. Check Outdoor Ambient Temperature

Inlet: DB

Outlet: DB

7. Check Refrigerant Temperature

Liquid Temperature:

Discharge Gas Temperature:

8. Check Pressure

Discharge Pressure: Psi

Suction Pressure: Psi

9. Check Voltage

Rated Voltage: V

Operating Voltage:

1-L2

1-L3

Starting Voltage: V

Phase Imbalance: 1-

10. Check Compressor Input Running Current

Input: kW

Running Current: Comp. No.1 A Comp. No.2 A

No. 4 DB /WB

DB /WB

No. 8 DB /WB

DB /WB

2-L3

11. Is the refrigerant charge adequate?

12. Do the operation control devices operate correctly?

13. Do the safety devices operate correctly?

14. Has the unit been checked for refrigerant leakage?

15. Is the unit clean inside and outside?

16. Are all cabinet panels securely closed?

17. Are all cabinet panels free from rattles?

18. Is the filter clean?

19. Is the heat exchanger clean?

20. Are the stop valves open?

21. Does the drain water flow smoothly from the drain pipe?

P5417009-rev.6

Page 85

Table 9.2 Alarm Code

Code Category Content of Abnormality Leading Cause

01 Indoor Unit

02 Outdoor Unit

Communication

05 Supply Phase Abnormality of Power Supply Phases

06 Voltage Abnormal Inverter Voltage Outdoor Voltage Decrease, Insufcient Power Capacity

Cycle

08 Increase in Discharge Gas Temperature

0A Communication

Outdoor Unit

0C Incorrect Outdoor Unit Main Unit Setting

12 Abnormality of Outlet Air Thermistor

14 Abnormality of Gas Piping Thermistor

16 Abnormality of Remote Sensor (DOAS)

1b Activation of Overcurrent Protection Abnormality of Fan Motor

1C Problem with Current Sensor Abnormality of Fan Controller Current Sensor

1d Activation Fan Controller Protection Driver IC Error Signal Detection, Instantaneous Overcurrent

22 Abnormality of Outdoor Air Thermistor

29 Abnormality of Low Pressure Sensor

Sensor on

Indoor Unit

Indoor Fan

Motor

Indoor Fan

Controller

Sensor on

Outdoor Unit

Activation of Protection Device

(Float Switch)

Activation of Protection Device (High Pressure Cut)

Abnormal Communication between Indoor Units and Outdoor Units

Abnormal Communication between Inverter PCB and Outdoor PCB

Decrease in Discharge Gas Superheat

Abnormal Communication between Outdoor Units

Incorrect Outdoor Unit Address Setting

Abnormality of Inlet Air Thermistor

Abnormality of Freeze Protection

Thermistor

Abnormality of Outdoor Air Thermistor

(EconoFresh)

Abnormality of Thermistor Built-in Remote Controller (DOAS)

Abnormality of Indoor Fan System

Activation of Protection Device for

Indoor Fan

Abnormality of Fan Controller Fin

Temperature

Abnormality of Indoor Fan Controller

Voltage

Abnormality of High Pressure Sensor

Abnormality of Discharge Gas Thermistor

on Top of Compressor

Abnormality of Heat Exchanger Liquid Pipe Thermistor

Abnormality of Heat Exchanger

Gas Pipe Thermistor

Activation of Float Switch (High Water Level in Drain Pan, Abnormality of Drain Pipe, Float Switch, or Drain Pan)

Activation of PSH (Pipe Clogging, Excessive Refrigerant, Inert Gas

Mixing)

Incorrect Wiring, Loose Terminals, Disconnected Communication

Cable, Blowout of Fuse, Indoor Unit Power OFF

Inverter PCB -Outdoor PCB Communication Failure (Loose Connector, Wire Breaking, Blowout of Fuse)

Incorrect Power Supply, Connection to Reversed Phase, Open-Phase

Excessive Refrigerant Charge, Failure of Thermistor, Incorrect

Wiring, Incorrect Piping Connection, Expansion Valve Locking at Opened Position (Disconnect Connector)

Insufcient Refrigerant Charge, Pipe Clogging, Failure of Thermistor,

Incorrect Wiring, Incorrect Piping Connection, Expansion Valve Locking at Closed Position (Disconnect Connector)

Incorrect Wiring, Breaking Wire, Loose Terminals

Duplication of Address Setting for Outdoor Units (Sub Units) in Same Refrigerant Cycle Number

Two (or more) Outdoor Units Set as "Main Unit" Exist in Same

Refrigerant Cycle Number

Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit

Abnormality of Indoor Fan Motor (Step-Out), Indoor Fan Controller Failure

Fan Motor Overheat, Lockup

Abnormality of Fin Thermistor or Fan Controller, Heat Exchanger Clogging, Abnormality of Fan Motor

Indoor Voltage Decrease, Insufcient Capacity of

Power Supply Wiring

Incorrect Wiring, Disconnecting Wiring, Breaking Wire, Short Circuit

P5417009-rev.6

Page 86

Code Category Content of Abnormality Leading Cause

35 Incorrect Setting of Indoor Unit No. Duplication of Indoor Unit No. In same Refrigerant Cycle Number

36 Incorrect of Indoor Unit Combination Indoor Unit is Designed for R22

51 Sensor Abnormal Inverter Current Sensor Current Sensor Failure

54 Abnormality of Inverter Fin Temperature

55 Inverter Failure Inverter PCB Failure

5b Activation of Overcurrent Protection Fan Motor Failure

5C Abnormality of Fan Controller Sensor

A1 External Input Detection of External Abnormality Input Signal by External Abnormality Detection Setting

b2 Abnormality of EEPROM EEPROM failure, Incorrect Data of EEPROM

b5 Incorrect Indoor Unit No. Setting

C2 Incorrect Indoor Unit Connection Number

C5 Incorrect Connection Port Setting

EE Compressor

System

Outdoor Unit

Protection

Device

Inverter

Fan Controller

Indoor Unit

Change-Over

Box

Incorrect Connection of Change-Over Box

Incorrect Capacity Setting of Outdoor Unit and Indoor Unit

Abnormality of Picking up Circuit for Protection in Outdoor Unit

Abnormality of Outdoor Unit Capacity Outdoor Unit Capacity > 432MBH

Incorrect Setting of Outdoor Unit Models Combination or Voltage

Abnormal Communication between Main Unit and Sub Unit(s)

Abnormal Combination between Inverter PCB and Outdoor PCB

Activation of Pressure Ratio Decrease Protection

Activation of Low Pressure Increase Protection

Activation of High Pressure Increase Protection

Activation of Low Pressure Decrease Protection

Activation of Inverter Overcurrent Protection

Inverter Error Signal Detection

Activation of Fan Controller Protection

Abnormality of Fan Controller Fin

Temperature

Incorrect Setting of Unit Model Code Incorrect Setting of Indoor Unit Model

Incorrect Setting of Unit and Refrigerant Cycle Number

Abnormal Communication between

Indoor PCB and Indoor Fan Controller

Incorrect Change-Over Box Connection

Incorrect Indoor Unit Refrigerant Number Setting

Compressor Protection Alarm (It can not be reset from Wired Controller)

Connection of Change-Over Box to Heat Pump System, Disconnection of Change-Over Box to Heat Recovery System,

Generation1 and 2 Change-Over Boxes are used in the same

system

Incorrect Capacity Setting of Outdoor Unit and Indoor Unit,

Excessive or Insufcient Indoor Unit Total Capacity Code

Failure of Protection Detecting Device

(Incorrect Wiring of Outdoor PCB)

Incorrect Setting of Main and Sub Units(s) Combination or Voltage

Incorrect Wiring, Disconnect Wire, Breaking Wire, PCB Failure

Incorrect Combination between Inverter PCB and Outdoor PCB

Defective Compression (Failure of Compressor or Inverter, Loose

Power Supply Connection)

Overload at Cooling, High Temperature at Heating, Expansion Valve Locking at Open Position (Loose Connector)

Overload Operation (Heat Exchanger Clogging, Short Circuit of

Airow), Pipe Clogging, Excessive Refrigerant, Inert Gas Mixing

Insufcient Refrigerant, Piping Clogging, Expansion Valve Locking

at Close Position (Loosen Connector)

Overload Operation, Compressor Failure

Driver IC Error Signal Detection (Protection for Overcurrent, Voltage Decrease, Short Circuit), Instantaneous Overcurrent

Abnormal Inverter Fin Thermistor, Heat Exchanger Clogging, Fan Motor Failure

Driver IC Error Signal Detection (Protection for Overcurrent, Voltage Decrease, Short Circuit), Instantaneous Overcurrent

Fin Thermistor Failure, Heat Exchanger Clogging, Fan Motor Failure

Failure of Current Sensor (Instantaneous Overcurrent, Increase of Fin Temperature, Voltage Decrease, Grand Fault, Step-Out)

64 or More Number is Set for Address or Refrigerant Cycle

There are 17 or More Non-Corresponding to H-LINK II Units are Connected to One System.

Communication Failure, Disconnected Communication Cable,

Abnormal Connection

2 or More Change-Over Boxes are Connected between Outdoor Unit and Indoor Unit

9 or More I.U. Connected to Single Branch Type Change-Over Box, 7 or More I.U. Connected per a branch of Multiple Branch Type Change-Over Box

Indoor Units of Different Refrigerant Cycle Number are Connected to Change-Over Box

Indoor Unit is connected to a port that is set to not used for Multiple Branch Type Change-Over Box

This alarm code appears when the following alarms* occurs three times within 6 hours. *02, 07, 08, 39, 43 to 45, 47

P5417009-rev.6

Page 87

10.SafetyandControlDeviceSetting

(

)

(

)

(

)

(

)

Compressor Protection

The compressor is protected by the following devices and their combinations.

(1) High Pressure Switch: This switch cuts out the operation of the compressor when the discharge

pressure exceeds the setting.

(2) Oil Heater: This band type heater protects against oil foaming during cold starting, as it is energized

while the compressor is stopped.

208/230V 60Hz

High Pressure Increase Protection Automatic Reset, Non-Adjustable

High Pressure Increase Protection Control

Pressure Switch (for each compressor)

For Inverter Compressor Automatic Reset, Non-Adjustable

Over Current

Inverter Current Protection Control A Fuse A

Over Heat Automatic Reset, Non-Adjustable

Discharge Temperature Increase Protection Control

For Fan Motor Automatic Reset, Non-Adjustable

Over Current Protection Control A Fuse A

Model

Cut-Out psi -7 -7 -7 -7 -7 -7

Cut-In psi 464 ±21 464 ±21 464 ±21 464 ±21 464 ±21 464 ±21

for 5sec

for 10min

(H,Y)VAHR072B32S (H,Y)VAHR096B32S (H,Y)VAHR120B32S

psi

(MPa)

(MPa) -0.05) -0.05) -0.05) -0.05) -0.05) -0.05)

(MPa) (3.20 ±0.15) (3.20 ±0.15) (3.20 ±0.15) (3.20 ±0.15) (3.20 ±0.15) (3.20 ±0.15)

551

(3.80)

601

-21 -21 -21 -21 -21 -21

(4.15

-0.15) -0.15) -0.15) -0.15) -0.15) -0.15)

270

(132)

551

(3.80)

601

(4.15

4848 38 50

270

(132)

551

(3.80)

601

(4.15

284284284

(140)(140)(140)

270

(132)

777

1010 10

(H,Y)VAHR144B32S (H,Y)VAHR168B32S

551 551

(3.80) (3.80)

601 601

(4.15 (4.15

38 48 40 50

284 284

(140) (140)

270 270

(132) (132)

10 10

460V 60Hz

High Pressure Increase Protection Automatic Reset, Non-Adjustable

High Pressure Increase Protection Control

Pressure Switch (for each compressor)

For Inverter Compressor Automatic Reset, Non-Adjustable

Over Current

Inverter Current Protection Control A Fuse A

Over Heat Automatic Reset, Non-Adjustable

Discharge Temperature Increase Protection Control

For Fan Motor Automatic Reset, Non-Adjustable

Over Current Protection Control A Fuse A

Model

Cut-Out psi -7 -7 -7 -7 -7 -7

Cut-In psi 464 ±21 464 ±21 464 ±21 464 ±21 464 ±21 464 ±21

for 5sec

for 10min

(H,Y)VAHR072B42S (H,Y)VAHR096B42S (H,Y)VAHR120B42S

psi

(MPa)

(MPa) -0.05) -0.05) -0.05) -0.05) -0.05) -0.05)

(MPa) (3.20 ±0.15) (3.20 ±0.15) (3.20 ±0.15) (3.20 ±0.15) (3.20 ±0.15) (3.20 ±0.15)

551 551 551

(3.80) (3.80) (3.80)

601 601

-21 -21 -21 -21 -21 -21

(4.15

-0.15) -0.15) -0.15) -0.15) -0.15) -0.15)

26 25 25 25

284 284 284 284 284 284

(140) (140) (140) (140) (140) (140)

270 270 270 270 270 270

(132)

3.5 5

(4.15 (4.15

(132) (132)

3.5 3.5 10 5

601

19.5

(H,Y)VAHR144B42S (H,Y)VAHR168B42S

551 551

(3.80) (3.80)

601 601

(4.15 (4.15

19.5 26 25 25

(132) (132)

3.5 3.5 55

(H,Y)VAHR192B32S

551

(3.80)

601

(4.15

48 50

284

(140)

270

(132)

(H,Y)VAHR192B42S

551

(3.80)

601

(4.15

26 25

(132)

3.5 5

P5417009-rev.6

Page 88

P5417009-rev.6

Code No. LIT-12012492 Revised February 2019

Johnson Controls HVAHR168B32S, HVAHR096B32S, HVAHR120B32S, HVAHR144B32S, HVAHR192B32S Installation And Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual