Panasonic U-96MF1U9, U-72MF1U9E, U-72MF1U9 Installation Instructions

INSTALLATION INSTRUCTIONS

3WAY VRF System Air Conditioner

This air conditioner uses the refrigerant R410A.

NOTE

External diameter of service port R410A: 5/16"

Model No.

Outdoor Units

Type Outdoor Unit Type 72 96

U 3WAY VRF System

* Salt-Air Damage Resistant Speciﬁ cations.

Indoor Units

Type Indoor Unit Type 7 9 12 15 18

D1 1-Way Cassette S-07MD1U6 S-09MD1U6 S-12MD1U6

U1 4-Way Cassette S-12MU1U6 S-18MU1U6

Y1 4-Way Cassette 60 × 60 S-12MY1U6 S-18MY1U6

K1 Wall Mounted S-07MK1U6 S-09MK1U6 S-12MK1U6 S-18MK1U6

T1 Ceiling S-12MT1U6 S-18MT1U6

F1 Low Silhouette Ducted S-07MF1U6 S-09MF1U6 S-12MF1U6 S-15MF1U6 S-18MF1U6

M1 Slim Low Static Ducted S-07MM1U6 S-09MM1U6 S-12MM1U6 S-15MM1U6 S-18MM1U6

E1 High Static Pressure Ducted

P1 Floor Standing S-07MP1U6 S-09MP1U6 S-12MP1U6 S-15MP1U6 S-18MP1U6

R1 Concealed Floor Standing S-07MR1U6 S-09MR1U6 S-12MR1U6 S-15MR1U6 S-18MR1U6

U-72MF1U9 U-96MF1U9

U-72MF1U9E* U-96MF1U9E*

Type Indoor Unit Type 19 24 36 48 54

D1 1-Way Cassette

U1 4-Way Cassette S-24MU1U6 S-36MU1U6

Y1 4-Way Cassette 60 × 60

K1 Wall Mounted S-19MS1U6*

T1 Ceiling S-24MT1U6

F1 Low Silhouette Ducted S-24MF1U6 S-36MF1U6 S-48MF1U6 S-54MF1U6

M1 Slim Low Static Ducted

E1 High Static Pressure Ducted S-36ME1U6 S-48ME1U6

P1 Floor Standing S-24MP1U6

R1 Concealed Floor Standing S-24MR1U6

S-24MK1U6

*1 Necessary to install the External Electronic Expansion Valve Kit (Optional : CZ-P56SVK1U)

85464369528012 CV6233186887

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IMPORTANT! Please Read Before Starting

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

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

Carefully read this instruction booklet before beginning.

●

Follow each installation or repair step exactly as shown.

●

Observe all local, state, and national electrical codes.

●

Pay close attention to all warning and caution notices

●

given in this manual.

This symbol refers to a hazard or

WARNING

CAUTION

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certiﬁ ed dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to follow the instructions in this document.

SPECIAL PRECAUTIONS

WARNING

Do not supply power to the unit until all wiring and tubing • are completed or reconnected and checked.

Highly dangerous electrical voltages are used in this • system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or

death. Ground the unit• following local electrical codes.

Connect all wiring tightly. Loose wiring may cause • overheating at connection points and a possible ﬁ re hazard.

To prevent possible hazards from insulation failure, • the unit must be grounded.

When Transporting

Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or

When Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

unsafe practice which can result in severe personal injury or death.

This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage.

thin aluminum ﬁ ns on the air conditioner can cut your ﬁ ngers.

When Installing…

Select an installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

…In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to

walls and ﬂ oors.

Keep the ﬁ re alarm and the air

CAUTION

…In Moist or Uneven Locations

Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and abnormal vibration.

…In an Area with High Winds

Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air bafﬂ e.

…In a Snowy Area (for Heat Pump-type Systems)

Install the outdoor unit on a raised platform that is higher than drifting snow. Provide snow vents.

outlet at least 5 feet away from the unit.

When Connecting Refrigerant Tubing

Ventilate the room well, in the event that is refrigerant • gas leaks during the installation. Be careful not to allow contact of the refrigerant gas with a ﬂ ame as this will cause the generation of poisonous gas.

Keep all tubing runs as short as possible.• Use the ﬂ are method for connecting tubing.• Apply refrigerant lubricant to the matching surfaces of •

the ﬂ are and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection.

Check carefully for leaks before starting the test run.•

When performing piping work do • not mix air except for specifIed refrigerant (R410A) in refrigeration cycle. It causes capacity down, and risk of explosion and injury due to high tension inside the

WARNING

Do not leak refrigerant while piping work for an • installation or re-installation, and while repairing refrigeration parts. Handle liquid refrigerant carefully as it may cause

frostbite.

refrigerant cycle. Refrigerant gas leakage may • cause ﬁ re. Do not add or replace refrigerant •

other than speciﬁ ed type. It may cause product damage, burst and injury etc.

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When Servicing

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

Keep your ﬁ ngers and clothing away from any moving • parts.

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

WARNING

Do not clean inside the indoor and • outdoor units by users. Engage authorized dealer or specialist for cleaning.

In case of malfunction of this • appliance, do not repair by yourself. Contact to the sales dealer or service dealer for a repair.

Others

CAUTION

Do not touch the air inlet or the • sharp aluminum ﬁ ns of the outdoor unit. You may get injured. Ventilate any enclosed areas when • installing or testing the refrigeration system. Escaped refrigerant gas, on contact with ﬁ re or heat, can produce dangerously toxic gas.

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

Do not touch the air inlet or the • sharp aluminum ﬁ ns of the outdoor unit. You may get injured. Do not sit or step on the unit, • you may fall down accidentally.

Do not stick any object into the • FAN CASE. You may be injured and the unit may be damaged.

Check of Density Limit

The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit.

The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its density should rise excessively. Suffocation from leakage of refrigerant is almost non-existent. With the recent increase in the number of high density buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of ﬂ oor space, individual control, energy conservation by curtailing heat and carrying power, etc. Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared to conventional individual air conditioners. If a single unit of the multi air conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its density does not reach the limit (and in the event of an emergency, measures can be made before injury can occur).

ASHRAE and the International Mechanical Code of the ICC as well as CSA provide guidance and deﬁ ne safeguards related to the use of refrigerants, all of which deﬁ ne a Refrigerant Concentration Level (RCL) of 25 pounds per 1,000 cubic feet for R410A refrigerant. For additional guidance and precautions related to refrigerant safety, please refer to the following documents:

International Mechanical Code 2009 (IMC-2009) (or more recently revised) ASHRAE 15 ASHRAE 34

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Precautions for Installation Using New Refrigerant

CAUTION

1. Care regarding tubing

1-1. Process tubing

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

Pipes and Tubes.” For tubes of ø7/8" (ø22.22 mm) or larger, use C1220 T-1/2H material or H material, and do not bend the tubes.

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

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

(optional).

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

Use sufﬁ cient care in handling the tubing. Seal the tubing ends with caps or tape to prevent dirt, moisture, or other foreign substances from entering. These substances

Copper tube

can result in system malfunction.

Material O

Outer diameter 1/4 (6.35) 3/8 (9.52) 1/2 (12.7) 5/8 (15.88) 3/4 (19.05)

Wall thickness 1/32 (0.8) 1/32 (0.8) 1/32 (0.8) 5/128 (1.0)

Material 1/2 H, H

Outer diameter

Wall thickness

7/8 (22.22) 1 (25.4) 1-1/8 (28.58) 1-1/4 (31.75) 1-1/2 (38.1) 1-5/8 (41.28)

5/128 (1.0) 5/128 (1.0) 5/128 (1.0) 3/64 (1.1)

Unit: in. (mm)

over 5/128 (1.0)

over 3/64 (1.15) over 3/64 (1.20)

Unit: in. (mm)

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

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

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

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

in the unit.

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

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

3. Different tools required

3-1. Tool specifications have been changed due to the characteristics of R410A. Some tools for R22- and R407C-type refrigerant systems cannot be used.

R407C tools

New

Item

Manifold gauge Yes No Types of refrigerant, refrigerating machine oil, and

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

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

Leak detector Yes No Leak detectors for CFC and HCFC that react to

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

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

tool?

compatible with R410A?

pressure gauge are different.

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

chlorine do not function because R410A contains no chlorine. Leak detector for HFC134a can be used for R410A.

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

Remarks

Manifold gauge

Vacuum pump

Outlet Inlet

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3-2. Use R410A exclusive cylinder only.

New refrigerant R410A cannot be used for earlier models

1. Compressor specifications are different.

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

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

Completely cleaning out residual refrigerating

machine oil is impossible, even by flushing.

Valve

Single-outlet valve

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

Liquid

3. Refrigerating machine oil differs (R22).

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

R22 refrigerating machine oil Mineral oil (Suniso oil)

R407C refrigerating machine oil Synthetic fluid (ether oil)

R410A refrigerating machine oil Synthetic fluid (ether oil)

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CONTENTS

Page Page

IMPORTANT! ............................................................... 2

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

1. GENERAL ............................................................... 7

1-1. Tools Required for Installation (not supplied) 1-2. Accessories Supplied 1-3. Type of Copper Tube and Insulation Material 1-4. Additional Materials Required for Installation 1-5. Tubing Length 1-6. Tubing Size 1-7. Straight Equivalent Length of Joints 1-8. Additional Refrigerant Charge 1-9. System Limitations 1-10. Installation Standards 1-11. Check of Limit Density 1-12. Installing Distribution Joint 1-13. Optional Distribution Joint Kits 1-14. Optional Solenoid Valve Kit 1-15. Example of Tubing Size Selection and

Refrigerant Charge Amount

2. SELECTING THE INSTALLATION SITE ............. 20

2-1. Outdoor Unit 2-2. Removing Fin Guard for Heat Exchanger 2-3. Shield for Horizontal Exhaust Discharge 2-4. Installing the Outdoor Unit in Heavy Snow

Areas

2-5. Precautions When Installing in Heavy Snow

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

5. HOW TO PROCESS TUBING .............................. 32

5-1. Connecting the Refrigerant Tubing 5-2. Connecting Tubing Between Indoor and

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

6. AIR PURGING ...................................................... 36

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

7. TEST RUN ............................................................ 39

7-1. Preparing for Test Run 7-2. Test Run Procedure 7-3. Main Outdoor Unit PCB Setting 7-4. Auto Address Setting 7-5. Remote Controller Test Run Settings 7-6. Caution for Pump Down 7-7. Meaning of Alarm Messages

3. HOW TO INSTALL THE OUTDOOR UNIT .............. 24

3-1. Transporting 3-2. Installing the Outdoor Unit 3-3. Remove the Brackets Used for Transport 3-4. Routing the Tubing 3-5. Prepare the Tubing 3-6. Connect the Tubing

4. ELECTRICAL WIRING ......................................... 28

4-1. General Precautions on Wiring 4-2. Recommended Wire Length and Wire

Diameter for Power Supply System

4-3. Wiring System Diagram

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1. GENERAL

CAUTION

This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the outdoor unit and make sure all accessory parts listed are with the system before beginning.

1-1. Tools Required for Installation (not supplied)

1. Flathead screwdriver

2. Phillips head screwdriver

3. Knife or wire stripper

4. Tape measure

5. Level gauge

6. Sabre saw or key hole saw

7. Hacksaw

8. Core bits

9. Hammer

10. Drill

11. Tube cutter

12. Tube flaring tool

13. Torque wrench

14. Adjustable wrench

15. Reamer (for deburring)

1-2. Accessories Supplied

See Table 1-1.

1-3. Type of Copper Tube and Insulation Material

If you wish to purchase these materials separately from a local

source, you will need:

1. Deoxidized annealed copper tube for refrigerant tubing.

2. Foamed polyethylene insulation for copper tubes as

required to precise length of tubing. Wall thickness of the

insulation should be not less than 5/16".

3. Use insulated copper wire for field wiring. Wire size varies

with the total length of wiring.

“

Refer to

4. ELECTRICAL WIRING” for details.

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

1-4. Additional Materials Required for Installation

1. Refrigeration (armored) tape

2. Insulated staples or clamps for connecting wire

(See your local codes.)

3. Putty

4. Refrigeration tubing lubricant

5. Clamps or saddles to secure refrigerant tubing

6. Scale for weighing

Table 1-1 Outdoor Unit

Q’ty

Part name Figure

U-72MF1U9

U-72MF1U9E

(6 ton)

Connection tubing

Instruction manual

Outer diameter ø1-1/8"(ø28.58) Outer diameter ø7/8"(ø22.22) Outer diameter ø3/4"(ø19.05)

Inner diameter

ø3/4"(ø19.05)

Inner diameter

ø3/4"(ø19.05)

Inner diameter

ø5/8"(ø15.88)

paper

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U-96MF1U9

U-96MF1U9E

(8 ton)

1-5. Tubing Length

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

1. Main tubing length LM = LA + LB … b 262 ft

2. Main distribution tubes LC – LH are selected according to the capacity after the

3. The outdoor connection main tubing (LO portion) is determined by the total capacity of the outdoor units that are connected to the tube ends.

4. Sizes of indoor unit connection tubing

distribution joint.

1 – 40 are determined by the connection

tubing sizes on the indoor units.

Balance tubing

3/8"

)

(ø

Explanation of symbols

Distribution joint (purchased separately)

Ball valve (field supply)

T-joint (field supply)

Solidly welded shut (pinch weld)

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

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

unit connections and tubing branches.

LB LC

Max.

1.3 ft

Max.

For extension

LE L3

and parts.

T-joint tubing (header joint system)

Solenoid valve kit

R410A distribution joint CZ-P900PH1U (for outdoor unit) CZ-P224BH1U (for indoor unit) CZ-P680BH1U (for indoor unit) CZ-P1350BH1U (for indoor unit)

Table 1-2 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights

Item Mark Contents Length (ft.)

Allowable tubinglength

Allowable elevationdifference

Allowable length of joint tubing

L = Length, H = Height

L1 Max. tubing length

ΔL (L2 – L4)

Difference between max. length and min. length from the No. 1 distribution joint

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

1, 2... 40

1+ 2... 40+

L1+

A+ B+LF+LG+LH

Max. length of each distribution tube Total max. tubing length including length of each

distribution tube (only liquid tubing)

L5 Distance between outdoor units

H1 When outdoor unit is installed higher than indoor unit

When outdoor unit is installed lower than indoor unit H2 Max. difference between indoor units H3 Max. difference between outdoor units

T-joint tubing (ﬁ eld-supply); Max. tubing length between

the ﬁ rst T-joint and solidly welded-shut end point

Actual length Equivalent length

≤ 492 ≤ 574

≤ 131

≤ 262*² ≤ 98

≤ 984

≤ 32 ≤ 164 ≤ 131 ≤ 49 ≤ 13

≤ 6.6

NOTE

1: The outdoor connection main tubing (LO portion) is determined by the total capacity of the outdoor units that are

connected to the tube ends.

2: If the longest tubing length (L1) exceeds 295 ft. (equivalent length), increase the sizes of the main tubes (LM) by 1

rank for the discharge tubes, suction tubes, and narrow tubes. (ﬁ eld supplied)

3: If the longest main tube length (LM) exceeds 164 feet, increase the main tube size at the portion before 164 ft. by 1

rank for the suction tubes and discharge tubes. (ﬁ eld supplied) (For the portion that exceeds 164 feet, set based on the main tube sizes (LA) listed in the table on the following page.)

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1-6. Tubing Size Table 1-3 Main Tubing Size (LA)

BTU/h (kW)

Total system tonnage 6 8 12 14 16 18 20 22 24

Combined outdoor models

Suction tubing

Discharge tubing

Liquid tubing

72,000

(21.1)

U-72MF1U9(E) U-96MF1U9(E) U-72MF1U9(E)

ø3/4"

(ø19.05)

ø5/8"

(ø15.88)

*1: If future extension is planned, select the tubing diameter based on the total tonnage after extension.

However extension is not possible if the resulting tubing size is two ranks higher. *2: The balance tube (outdoor unit tube) diameter is ø3/8" (ø9.52). *3: Type 1 tubing should be used for the refrigerant tubes. *4: If the length of the longest tube (L1) exceeds 295 ft. (equivalent length), increase the main tube (LM) size by 1 rank for the

suction, discharge, and liquid tubes. (Use field-supply reducers.) (Select from Table 1-3 and Table 1-9.) *5: If the longest main tube length (LM) exceeds 164 ft., increase the main tube size at the portion before 164 ft. by 1 rank for the

suction tubes and discharge tubes.

(For the portion that exceeds 164 ft., set based on the main tube sizes (LA) listed in the table above.)

ø3/8"

(ø9.52)

96,000

(28.1)

ø7/8"

(ø22.22)

ø3/4"

(ø19.05)

139,000

(40.7)

U-72MF1U9(E)

ø1/2"

(ø12.7)

168,000

(49.2)

U-96MF1U9(E) U-72MF1U9(E)

ø1-1/8"

(ø28.58)

ø7/8"

(ø22.22)

192,000

(56.3)

U-96MF1U9(E) U-96MF1U9(E)

ø5/8"

(ø15.88)

203,000

(59.5)

U-72MF1U9(E) U-72MF1U9(E) U-72MF1U9(E)

240,000

(70.3)

U-96MF1U9(E) U-72MF1U9(E) U-72MF1U9(E)

ø1-1/8"

(ø28.58)

264,000

(77.4)

U-96MF1U9(E) U-96MF1U9(E) U-72MF1U9(E)

ø1-3/8"

(ø34.92)

ø3/4"

(ø19.05)

Unit: in. (mm)

288,000

(84.4)

U-96MF1U9(E) U-96MF1U9(E) U-96MF1U9(E)

■ Size of tubing (LO) between outdoor units

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

Table 1-4 Main Tubing Size After Distribution (LB, LC...)

Total capacity after distribution

Tubing size

Below BTU/h 24.200 54.600 85.300 102.400 124.200 143.300 162.400 200.600 238.900

Over BTU/h – 24.200 54.600 85.300 102.400 124.200 143.300 162.400 200.600

Suction tubing

Discharge tubing

Liquid tubing

ø5/8"

(ø15.88)

ø1/2"

(ø12.70)

ø3/8"

(ø9.52)

ø3/4"

(ø19.05)

ø5/8"

(ø15.88)

ø3/8"

(ø9.52)

ø3/4"

(ø19.05)

ø5/8"

(ø15.88)

ø3/8"

(ø9.52)

ø7/8"

(ø22.22)

ø3/4"

(ø19.05)

ø3/8"

(ø9.52)

ø1-1/8"

(ø28.58)

ø3/4"

(ø19.05)

ø1/2"

(ø12.70)

ø1-1/8"

(ø28.58)

ø7/8"

(ø22.22)

ø1/2"

(ø12.70)

ø1-1/8"

(ø28.58)

ø7/8"

(ø22.22)

ø1/2"

(ø12.70)

ø1-1/8"

(ø28.58)

ø7/8"

(ø22.22)

ø5/8"

(ø15.88)

Unit: in. (mm)

ø1-1/8"

(ø28.58)

ø1-1/8"

(ø28.58)

ø5/8"

(ø15.88)

Total capacity after distribution

Tubing size

Below BTU/h 258.000 334.400 –

Over BTU/h 238.900 258.000 334.400

Suction tubing

Discharge tubing

Liquid tubing

ø1-3/8"

(ø34.92)

ø1-1/8"

(ø28.58)

ø3/4"

(ø19.05)

ø1-3/8"

(ø34.92)

ø1-1/8"

(ø28.58)

ø3/4"

(ø19.05)

ø1-1/2"

(ø38.10)

ø1-1/8"

(ø28.58)

ø3/4"

(ø19.05)

Table 1-5 Outdoor Unit Tubing Connection Size (A – D)

BTU/h

(kW)

Suction tubing

Discharge

tubing

Liquid tubing

Balance tubing

72,000

(21.1)

ø3/4"*¹

(ø19.05)*¹

Brazing connection

ø5/8"

(ø15.88)

Brazing connection

ø3/8" (ø9.52) ø3/8" (ø9.52)

Flare connection

ø3/8" (ø9.52)

Flare connection

96,000

(28.1)

ø7/8"*²

(ø22.22)*²

ø3/4"

(ø19.05)

Unit: in. (mm)

*1: The outdoor unit connection tubing (LO) is

determined by the total capacity of the outdoor units connected to the tube ends. The tubing size is selected based on the table of main tube sizes after the branch.

*2: If the total capacity of the indoor units

connected to the tube ends is different from the total capacity of the outdoor units, then the main tube size is selected based on the total capacity of the outdoor units. (For LA, LB, and LF in particular)

*1 If the size of tubing (LA) is less than 16.4 feet,

it is recommended that the tubing diameter be larger than ø7/8" (ø22.22).

*2 If the size of tubing (LA) is less than 16.4 feet,

it is recommended that the tubing diameter be larger than ø1-1/8" (ø28.58).

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Table 1-6 Refrigerant Charge Amount at Shipment (for outdoor unit)

(oz)

U-72MF1U9

U-72MF1U9E

416 416

Table 1-7 Indoor Unit Tubing Connection Size ( 1 – 40)

Indoor unit type 7 9 12 15 18 19 24 36 48 54

Distribution joint-solenoid valve kit tubing

Solenoid valve kit-Indoor unit tubing connection

*1: For the solenoid valve kits, use type 160 with parallel speciﬁ cations. Branch the tubing before and after the solenoid valve kits.

Suction tubing ø5/8" (ø15.88)

Discharge tubing ø1/2" (ø12.7)

Liquid tubing ø3/8" (ø9.52)

Gas tubing ø1/2" (ø12.7) ø5/8" (ø15.88)

Liquid tubing ø1/4" (ø6.35) ø3/8" (ø9.52)

U-96MF1U9

U-96MF1U9E

Unit: in. (mm)

1-7. Straight Equivalent Length of Joints

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

Table 1-8 Straight Equivalent Length of Joints

Gas tubing size (in.(mm))

90° elbow

45° elbow

U-shape tube bent (R2–23/64–3–15/16 in.)

Trap bend

1/2"

(12.7)

1 ft.

(0.30 m)

0.8 ft.

(0.23 m)

3 ft.

(0.90 m)

7.5 ft.

(2.30 m)

5/8"

(15.88)

1.1 ft.

(0.35 m)

0.9 ft.

(0.26 m)

3.4 ft.

(1.05 m)

9.2 ft.

(2.80 m)

3/4"

(19.05)

1.4 ft.

(0.42 m)

1 ft.

(0.32 m)

4.1 ft.

(1.26 m)

10.5 ft.

(3.20 m)

7/8"

(22.22)

1.6 ft.

(0.48 m)

1.2 ft.

(0.36 m)

4.7 ft.

(1.44 m)

12.5 ft.

(3.80 m)

(25.4)

1.7 ft.

(0.52 m)

1.3 ft.

(0.39 m)

5.1 ft.

(1.56 m)

14.1 ft.

(4.30 m)

1-1/8"

(28.58)

1.9 ft.

(0.57 m)

1.4 ft.

(0.43 m)

5.6 ft.

(1.71 m)

15.4 ft.

(4.70 m)

1-1/4"

(31.8)

2.3 ft.

(0.70m)

1.7 ft.

(0.53 m)

6.9 ft.

(2.10 m)

16.4 ft.

(5.00 m)

1-1/2" (38.1)

2.6 ft.

(0.79 m)

1.9 ft.

(0.59 m)

7.8 ft.

(2.37 m)

14.0 ft.

(5.80 m)

Y-branch distribution joint

Ball valve for service Equivalent length conversion not needed.

Table 1-9 Refrigerant tubing (Existing tubing can be used.)

Tubing size (in. (mm))

Material O Material 1/2H • H

ø1/4" (ø6.35) t1/32 (t0.8)

ø3/8" (ø9.52) t1/32 (t0.8) ø1-1/8" (ø28.58) t5/128 (t1.0)

ø1/2" (ø12.7) t1/32 (t0.8) ø1-1/4" (ø31.75) t3/64 (t1.1)

Equivalent length conversion not needed.

* When bending the tubes, use a bending

radius that is at least 4 times the outer diameter of the tubes. In addition, take sufficient care to avoid crushing or damaging the tubes when bending them.

ø5/8" (ø15.88) t5/128 (t1.0) ø1-1/2" (ø38.10) over t3/64 (t1.15)

ø3/4" (ø19.05) over t5/128 (t1.0) ø1-5/8" (ø41.28) over t3/64 (t1.20)

ø7/8" (ø22.22) t5/128 (t1.0)

1-8. Additional Refrigerant Charge

Additional refrigerant charge amount is calculated from the liquid tubing total length and a type of outdoor unit as follows.

Required amount of additional refrigerant charge =

Table 1-10-1 Amount of Refrigerant Charge Per ft.,

According to Liquid Tubing Size

Liquid tubing size Amount of refrigerant charge (oz/ft.)

ø1/4"

(ø6.35)

ø3/ 8"

(ø9.52)

ø1/2"

(ø12.7)

ø5/8"

(ø15.88)

ø3/4"

(ø19.05)

ø7/ 8"

(ø22.22)

0. 279 0.602 1. 38 1.9 9 2.78 3.9 3

[ (Amount of additional refrigerant charge per ft. of each size of liquid tube × its tube length) + (...) + (...)] + [(Necessary amount of additional refrigerant charge per outdoor unit + (...) + (...)]

* Always charge accurately using a scale for weighing.

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Table 1-10-2 Necessary Amount of Refrigerant Charge Per Outdoor Unit

Outdoor unit Outdoor unit Indoor unit

Suction tube

Discharge tube

Liquid tube

Balance tube

Suction tube

Discharge tube

Liquid tube

Gas tube

Liquid

tube

4-tube layout 3-tube layout 2-tube layout

Solenoid

valve kit

Indoor unit

Room

Hallway

Indoor unit

Room

Indoor unit

Room

Hallway

Indoor unit

Room

Solenoid valve kit

Further charge a certain amount listed below in addition to the amount of refrigerant charge.

U-72MF1U9

U-72MF1U9E

42 oz/unit 42 oz/unit

U-96MF1U9

U-96MF1U9E

1-9. System Limitations

Table 1-11 System Limitations

Max. No. allowable connected outdoor units 3

Max. capacity allowable connected outdoor units

288,000 BTU/h (24 ton, 84.4 kw)

Max. connectable indoor units 40*¹

Max. allowable indoor/outdoor capacity ratio 50 – 130 %

*1: In the case of 16 ton (type 192,000 BTU/h) or smaller units, the number is limited by the total capacity of the connected indoor

units.

1-10. Installation Standards

Relationship between A/C units and refrigerant tubing

● Install the solenoid valve kit 98 ft. or less from the indoor unit.

● In quiet locations such as hospitals, libraries, and hotel rooms, the refrigerant noise may be somewhat noticeable. It

is recommended that the solenoid valve kit be installed inside the corridor ceiling, at a location outside the room.

Desirable Undesirable

Common solenoid valve kit

Multiple indoor units under group control can utilize a solenoid valve kit in common.

●

Categories of connected indoor unit capacities are determined by the solenoid valve kit.

●

Type of solenoid valve kit Total capacity of indoor units (BTU/h)

160 19.000 < Total capacity < 54.600

56 7.500 < Total capacity < 19.000

If the capacity range is exceeded, use 2 solenoid valves connected in parallel.

●

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15 to 30

Tube branching methods (horizontal use)

Arrow view

Horizontal line

View as seen from arrow

WARNING

Always check the gas density

CAUTION

limit for the room in which the unit is installed.

1-11. Check of Limit Density

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

1-12. Installing Distribution Joint

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

(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT”

enclosed with the optional distribution joint kit (CZ-P900PH1U, CZ-P224BH1U, CZ-P680BH1U, CZ-P1350BH1U).

(2) When creating a branch using a commercially available

T-joint (header joint system), orient the main tubing so that it is either horizontal (level) or vertical. In order to prevent accumulation of refrigerant oil in stopped units, if the main tubing is horizontal then each branch tubing length should be at an angle that is greater than horizontal. If the main tubing is vertical, provide a raised starting portion for each branch.

[Header joint system]

Be sure to solidly weld shut the T-joint end (marked

●

by “X” in the figure). In addition, pay attention to the insertion depth of each connected tube so that the flow of refrigerant within the T-joint is not impeded.

When using the header joint system, do not make

●

further branches in the tubing.

Header joint system (Indoor)

Outdoor

Indoor

Horizontal line

L3 6.56 ft.

Types of vertical trap specifications

(When using ball valve)

Main tubing

Ball valve

(BV: purchased

separately)

Indoor unit (1)

(When not using ball valve)

Main tubing

Indoor unit is directed downward

Indoor unit (more than 2 units) (If only 1 unit is connected, a ball valve is also needed on this side.)

Branch tubing is directed upward.

More than 7–7/8"

Install at a positive angle

Indoor

Horizontal line

Horizontal

Indoor unit

Install at a positive angle (15 – 30°)

Solidly welded shut (X)

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

Do not use the header joint system on the outdoor unit

●

side.

(3) If there are height differences between indoor units or if

branch tubing that follows a distribution joint is connected to only 1 unit, a trap or ball valve must be added to that distribution joint. (When adding the ball valve, locate it within 1.3 ft. of the distribution joint.)

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

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1-13. Optional Distribution Joint Kits

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

Table 1-12

Model name Cooling capacity after distribution Remarks

1. CZ-P900PH1U 307.100 BTU/h or less For outdoor unit

2. CZ-P224BH1U 76.400 BTU/h or less For indoor unit

3. CZ-P680BH1U 232.000 BTU/h or less For indoor unit

4. CZ-P1350BH1U 460.700 BTU/h or less For indoor unit

■ Tubing size (with thermal insulation)

1. CZ-P900PH1U For outdoor unit (Capacity after distribution joint is 307.100 BTU/h or less.)

Note that the dimension marked with every alphabetical letter in the diagram shows the inner diameter.

Suction Tube

Distribution Joint

11-13/16 11-13/16

D E

Insulation

*Insulators for both the Suction tube and the Discharge tube are the same.

Discharge Tube

D E F

Liquid Tube

G F

EDF

13-25/64

EFG

InsulationInsulation

Unit: in.

*Suction tube and Discharge tube are similar in sizes and both the tube entrances have the same diameter. So the both Distribution joints can fit into different tubes. Since the diameter of the tube ends for both Suction and Discharge tube are different, take care not to connect the distribution joint different. See the “ # ” marks on the above figures.

Table 1-13 Dimensions for connections of each part

Size Part B Part C Part D Part E Part F Part G Part H Part I

Inch ø1-1/4 ø1-1/8 ø1 ø7/8 ø3/4 ø5/8 ø1/2 ø3/8

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Table 1-14 Dimensions for connections of each part

Insulation

*Insulators for both the Suction tube and the Discharge tube are the same. *Suction tube and Discharge tube are similar in sizes and both the tube entrances have the same diameter. So the both Distribution joints can fit into different tubes. Since the diameter of the tube ends for both Suction and Discharge tube are different, take care not to connect the distribution joint different. See the “ # ” marks on the above figures.

Note that the dimension marked with every alphabetical letter in the diagram shows the inner diameter.

EFD

GF E

EFG

E F

FED

Suction Tube

Discharge Tube

Liquid Tube

11-13/16

13-25/64

11-13/16

Position A B C D E F G H I J

Dimension ø1-1/2" ø1-1/4" ø1-1/8" ø1" ø7/8" ø3/4" ø5/8" ø1/2" ø3/8" –

2. CZ-P224BH1U

Use: For indoor unit (Capacity after distribution joint is 76.400 BTU/h or less.)

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

Unit: in.

Liquid tubing

9–1/4

I H

HIIH

2–23/32

2–11/64

Suction tubing

8–17/64

G H

5–45/64

2–11/64

3–5/8 15/32

1–37/64

Discharge tubing

7–21/64

5–23/64

3–1/32 9/32

Thermal insulation

3. CZ-P680BH1U

Use: For indoor unit (Capacity after distribution joint is greater than 76.400 BTU/h and no more than 232.000 BTU/h.)

Unit: in.

4. CZ-P1350BH1U

Use: For indoor unit (Capacity after distribution joint is greater than 232.000 BTU/h and no more than 460.700 BTU/h.)

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

3UCTIONTUBINGs$ISCHARGETUBING

H G

2–11/64

Thermal insulation

3–35/64

F E

C A

BBC

4–9/64 4–13/32

1–49/64

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Liquid tubing

EC $AFFA$ CE

13–25/64

Thermal insulation

Unit: in.

5–1/8

1–31/32

Unit: in.

1-14. Optional Solenoid Valve Kit

Precautions on Installation of Solenoid Valve Kit

(1) Clean base metals thoroughly.

(2) Use proper ventilation to carry fumes away from the work area.

(3) Use a high quality silver based solder of at least 15 % silver.

(4) Heat the base materials broadly and uniformly.

(5) Take precautions not to overheat the device which could damage sensitive internal components.

(6) Insure compliance with all local codes!

Part

Number

1 2 3 4 5 6 7 8 9 0 ! @ # $

1-21/32

3-21/32

CZ-P56HR1U

Types and speciﬁ cations of tubing connections

Gas tube: ID1/2" Liquid tube: ID1/4" Suspension hook Liquid tube: ID3/8" Suction tube: ID5/8" Discharge tube: ID1/2" Service panel Base of control box Terminal for power line Terminal for communication line Earth (M5 with washer) Cover of control box Relay kit Cover of relay kit

5-25/32

1-21/32

3-21/32

4-7/32

• Specifications

CZ-P56HR1U

Compatibility

7.500 ≤ Total capacity of indoor units (BTU/h) < 19.000

Power source Single-phase AC 208–230V 60Hz (supplied by indoor unit) Power input 33 W max. Net weight 151.7 oz. Accessories Washer x 2

Hanging hook M4 screw x 4 Tapping screw x 4 Wire holder 3-WAY connect wire ACC-3WAY-AAB (Solenoid Valve Relay Kit)

63/64

2-31/64

3-15/16

6-29/64

8-15/32

63/64

2-31/64

3-15/16

9-13/32

53/64 2-63/64

5-55/64

4-21/64 4-21/64

5-3/64 4-1/4 3-25/32

5-55/64

9-29/64

7/16

43/64

1-7/64

5-55/64

2-3/64

5-9/32

4-49/64

Unit: in.

1314

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CZ-P160HR1U

• Specifications

Part

Number

1 2 3 4 5 6 7 8 9 0 ! @ # $

1-21/32

3-21/32

Types and speciﬁ cations of tubing connections

Gas tube: ID5/8" Liquid tube: ID3/8" Suspension hook Liquid tube: ID3/8" Suction tube: ID5/8" Discharge tube: ID1/2" Service panel Base of control box Terminal for power line Terminal for communication line Earth (M5 with washer) Cover of control box Relay kit Cover of relay kit

5-25/32

4-7/32

1-21/32

3-21/32

CZ-P160HR1U

Compatibility

19.000 ≤ Total capacity of indoor units (BTU/h) < 54.600

Power source Single-phase AC 208–230V 60Hz (supplied by indoor unit) Power input 40 W max. Net weight 165.8 oz. Accessories Washer x 2

Hanging hook M4 screw x 4 Tapping screw x 4 Wire holder 3-WAY connect wire ACC-3WAY-AAB (Solenoid Valve Relay Kit)

63/64

2-31/64

3-15/16

6-29/64

8-15/32

63/64

2-31/64

3-15/16

9-13/32

53/64 2-63/64

1314

5-3/64

4-1/4

3-25/32

5-55/64 5-55/64

4-21/64 4-21/64

9-29/64

7/16

43/64

1-7/64

5-55/64

2-3/64

5-9/32

4-49/64

Unit: in.

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

Nut (field supplied) (3/8" or M10)

Washer

M4 screws (12 pcs.)

Suspension hook

Installation of Solenoid Valve Kit

1. Install the relay kit into the indoor unit. Refer to the Installation Manual for the solenoid valve kit.

2. Connect the solenoid valve kit and the relay kit in the field.

Gas tube

Liquid tube

Connect with conduit for power supply

Suspension hook

Top surface

Discharge tube

Relay kit

Front

Liquid tube

Suction tube

Cover of control box

NOTE

Notes on Installation

• Be sure to secure the valve body by using its structure with the suspension bolt, etc.

• Install the valve body within a distance of 98 ft. from the indoor unit. Some refrigerant noise will be produced. Therefore in hospitals, libraries, hotel guest rooms, and other quiet locations, it is recommended that the solenoid valve kit be installed on the ceiling reverse side of a hallway or another location separated from the room.

• When installing the valve body, install with the top surface facing up. Secure 7-7/8" or more of space to the front so that the front service panel can be removed.

• If the supplied suspension hook will not be used, and other fastening devices will be attached in the field, use the 4 screw holes on the top surface. DO NOT use any long screws other than the supplied screws. Use of other screws may puncture the internal tubing, resulting in refrigerant leakage.

• Do not block the air holes.

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Front

Service space

7-7/8" or more

+ 39 hidden pages