Panasonic U-72MF1U9 Installation Instructions Manual
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Panasonic U-72MF1U9 Installation Instructions Manual

3way vrf system air conditioner
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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
U-72MF1U9
U
3WAY VRF System
U-72MF1U9E*
* Salt-Air Damage Resistant Specifi cations.
Indoor Units
Type
Indoor Unit Type
D1
1-Way Cassette
U1
4-Way Cassette
Y1
4-Way Cassette 60 × 60
K1
Wall Mounted
T1
Ceiling
F1
Low Silhouette Ducted
M1
Slim Low Static Ducted
E1
High Static Pressure Ducted
P1
Floor Standing
R1
Concealed Floor Standing
Type
Indoor Unit Type
D1
1-Way Cassette
U1
4-Way Cassette
Y1
4-Way Cassette 60 × 60
K1
Wall Mounted
T1
Ceiling
F1
Low Silhouette Ducted
M1
Slim Low Static Ducted
E1
High Static Pressure Ducted
P1
Floor Standing
R1
Concealed Floor Standing
*
Necessary to install the External Electronic Expansion Valve Kit (Optional : CZ-P56SVK1U)
1
85464369528012
72
96
U-96MF1U9
U-96MF1U9E*
7
9
S-07MD1U6
S-09MD1U6
S-07MK1U6
S-09MK1U6
S-07MF1U6
S-09MF1U6
S-07MM1U6
S-09MM1U6
S-07MP1U6
S-09MP1U6
S-07MR1U6
S-09MR1U6
19
24
S-24MU1U6
S-19MS1U6*
1
S-24MK1U6
S-24MT1U6
S-24MF1U6
S-24MP1U6
S-24MR1U6
12
15
S-12MD1U6
S-12MU1U6
S-18MU1U6
S-12MY1U6
S-18MY1U6
S-12MK1U6
S-18MK1U6
S-12MT1U6
S-18MT1U6
S-12MF1U6
S-15MF1U6
S-18MF1U6
S-12MM1U6
S-15MM1U6
S-18MM1U6
S-12MP1U6
S-15MP1U6
S-18MP1U6
S-12MR1U6
S-15MR1U6
S-18MR1U6
36
48
S-36MU1U6
S-36MF1U6
S-48MF1U6
S-54MF1U6
S-36ME1U6
S-48ME1U6
18
54
CV6233186887

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  • Page 1: 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 U-72MF1U9 U-96MF1U9 3WAY VRF System U-72MF1U9E* U-96MF1U9E* * Salt-Air Damage Resistant Specifi cations. Indoor Units Type...

  • Page 2: Important

    IMPORTANT! thin aluminum fi ns on the air conditioner can cut your fi ngers. Please Read Before Starting When Installing… This air conditioning system meets strict safety and operating standards. As the installer or service person, it Select an installation location which is rigid and strong is an important part of your job to install or service the enough to support or hold the unit, and select a location system so it operates safely and effi...

  • Page 3: Check Of Density Limit

    When Servicing • Do not touch the air inlet or the CAUTION sharp aluminum fi ns of the • Turn the power OFF at the main power box (mains) outdoor unit. You may get injured. before opening the unit to check or repair electrical •...

  • Page 4: Precautions For Installation Using New Refrigerant

    Precautions for Installation Using New Refrigerant 1. Care regarding tubing 1-1. Process tubing ● Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seamless Pipes and Tubes.” For tubes of ø7/8" (ø22.22 mm) or larger, use C1220 T-1/2H material or H material, and do not bend the tubes. ●...

  • Page 5: New Refrigerant R410A Cannot Be Used For Earlier Models

    3-2. Use R410A exclusive cylinder only. Valve Single-outlet valve (with siphon tube) Liquid refrigerant should be recharged with the cylinder standing on end as shown. Liquid 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.

  • Page 6: Table Of Contents

    CONTENTS Page Page IMPORTANT! ............... 2 5. HOW TO PROCESS TUBING ......32 Please Read Before Starting 5-1. Connecting the Refrigerant Tubing Check of Density Limit 5-2. Connecting Tubing Between Indoor and Precautions for Installation Using New Refrigerant Outdoor Units New refrigerant R410A cannot be used for earlier models 5-3.

  • Page 7: General

    Insulated staples or clamps for connecting wire (See your local codes.) Putty Refrigeration tubing lubricant Clamps or saddles to secure refrigerant tubing Scale for weighing Table 1-1 Outdoor Unit Q’ty U-72MF1U9 U-96MF1U9 Part name Figure U-72MF1U9E U-96MF1U9E (6 ton) (8 ton)

  • Page 8: 1-5. Tubing Length

    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. Main tubing length LM = LA + LB … 262 ft Main distribution tubes LC – LH are selected according to the capacity after the distribution joint.

  • Page 9: 1-6. Tubing Size

    168,000 192,000 203,000 240,000 264,000 288,000 BTU/h (kW) (21.1) (28.1) (40.7) (49.2) (56.3) (59.5) (70.3) (77.4) (84.4) Total system tonnage U-72MF1U9(E) U-96MF1U9(E) U-72MF1U9(E) U-96MF1U9(E) U-96MF1U9(E) U-72MF1U9(E) U-96MF1U9(E) U-96MF1U9(E) U-96MF1U9(E) Combined outdoor models U-72MF1U9(E) U-72MF1U9(E) U-96MF1U9(E) U-72MF1U9(E) U-72MF1U9(E) U-96MF1U9(E) U-96MF1U9(E) U-72MF1U9(E)

  • Page 10: 1-7. Straight Equivalent Length Of Joints

    Table 1-6 Refrigerant Charge Amount at Shipment (for outdoor unit) U-72MF1U9 U-96MF1U9 U-72MF1U9E U-96MF1U9E (oz) Table 1-7 Indoor Unit Tubing Connection Size ( – Unit: in. (mm) Indoor unit type Suction tubing ø5/8" (ø15.88) Distribution joint-solenoid Discharge tubing ø1/2" (ø12.7)

  • Page 11: 1-9. System Limitations

    Table 1-10-2 Necessary Amount of Refrigerant Charge Per Outdoor Unit Further charge a certain amount listed below in addition to the amount of refrigerant charge. U-72MF1U9 U-96MF1U9 U-72MF1U9E U-96MF1U9E 42 oz/unit 42 oz/unit 1-9. System Limitations Table 1-11 System Limitations Max.

  • Page 12: 1-11. Check Of Limit Density

    Always check the gas density Tube branching methods (horizontal use) limit for the room in which the WARNING unit is installed. 1-11. Check of Limit Density When installing an air conditioner in a room, it is necessary Horizontal to ensure that even if the refrigerant gas accidentally leaks line View as seen out, its density does not exceed the limit level for that room.

  • Page 13: 1-13. Optional Distribution Joint Kits

    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.
  • Page 14 Table 1-14 Dimensions for connections of each part Unit: in. Position 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.) Liquid tubing Discharge tubing...

  • Page 15: 1-14. Optional Solenoid Valve Kit

    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.
  • Page 16 CZ-P160HR1U • Specifications Part Types and specifi cations of CZ-P160HR1U Number tubing connections 19.000 ≤ Total capacity of indoor units (BTU/h) < 54.600 Compatibility Gas tube: ID5/8" Power source Single-phase AC 208–230V 60Hz (supplied by indoor unit) Liquid tube: ID3/8" Suspension hook Power input 40 W max.
  • Page 17 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. Suspension hook Gas tube Liquid tube Top surface Connect with...

  • Page 18: 1-15. Example Of Tubing Size Selection And

    1-15. Example of Tubing Size Selection and Refrigerant Charge Amount Additional refrigerant charging Based on the values in Tables 1-3, 4, 5, 9 and 10-2 use the liquid tubing size and length, and calculate the amount of additional refrigerant charge using the formula below. Required additional 3.93 ×...

  • Page 19: Refrigerant Charge Amount

    ● Obtain liquid tubing size from Tables 1-3, 4, 5 and 9. Main tubing LA = ø5/8 (ft.) (Total capacity of indoor unit is 179,400 BTU/h) The longest tubing length in this example LB = ø1/2 (ft.) (Total capacity of indoor unit is 131,600 BTU/h) (LA = 131 ft.) LC = ø3/8 (ft.) (Total capacity of indoor unit is 83,800 BTU/h) Distribution joint tubing...

  • Page 20: Selecting The Installation Site

    2. SELECTING THE INSTALLATION SITE Exhaust fan 2-1. Outdoor Unit Hot air AVOID: Heat source ● heat sources, exhaust fans, etc. Out- door ● damp, humid or uneven locations unit ● indoors (no-ventilation location) Fig. 2-1 ● choose a place as cool as possible. ●...

  • Page 21: 2-2. Removing Fin Guard For Heat Exchanger

    2-2. Removing Fin Guard for Heat Exchanger After installation of the outdoor unit, detach the fin guard for heat exchangers as following steps. Cut out the fin guard entirely attached to the panel and remove it from the outdoor unit. Pay careful attention not to damage the fin when cutting out the fin guard.

  • Page 22: 2-6. Dimensions Of Wind Ducting

    2-6. Dimensions of Wind Ducting Reference diagram for air-discharge chamber (field supply) unit: in. Ceiling panel Ceiling panel Air direction: Front direction Air direction: Right direction 33-3/16 (Ceiling panel dimensions) (Ceiling panel dimensions) (Ceiling panel dimensions) 35-1/4 (Maximum bracket dimensions) Front view Right side view Front view...

  • Page 23: 2-7. Dimensions Of Snow Ducting

    2-7. Dimensions of Snow Ducting Reference diagram for snow-proof ducting (field supply) 31-1/2 Air direction: Air direction: Right direction Front direction Ceiling panel Ceiling panel 31-1/2 31-1/2 (Air intake duct) unit: in. 33-3/16 (Air outlet duct) 9-1/2 9-1/2 9-1/2 9-1/2 9-1/2 9-1/2 (Ceiling panel dimensions)

  • Page 24: How To Install The Outdoor Unit

    3. HOW TO INSTALL THE OUTDOOR UNIT 3-1. Transporting When transporting the unit, have it delivered as close to the installation site as possible without unpacking. Use a hook for suspending the unit. (Fig. 3-1) CAUTION ● When hoisting the outdoor unit, pass ropes or straps under the bottom plate as shown in the figure at right.

  • Page 25: 3-3. Remove The Brackets Used For Transport

    3-3. Remove the Brackets Used for Transport ● After installing the unit, remove the 2 transport brackets from the front and rear (4 brackets total). (Fig. 3-5) Remove the 2 screws (8 screws total) Remove the 2 transport brackets from the front and rear (4 brackets total) Fig.

  • Page 26: 3-5. Prepare The Tubing

    3-5. Prepare the Tubing ● Material: Use C1220 phosphorous deoxidized copper as described in JIS H3300, “Copper and Copper Alloy Seamless Pipes and Tubes.” (For tubes that are ø1" (ø25.4 mm) or larger, use 1/2H material or H material. For all others use O material.) ●...
  • Page 27 ● Tighten each cap as specified below. Valve cap Tightening torque for each cap Service port cap 60 – 100 lbs · in (70 – 120 kgf · cm) (width 19/32") Valve cap 170 – 220 lbs · in (200 – 250 kgf · cm) (width 55/64") Flare nut Flare nut...

  • Page 28: Electrical Wiring

    4-2. Recommended Wire Length and Wire Diameter for Power Supply System Outdoor unit Time delay fuse or circuit capacity U-72MF1U9 40 A U-72MF1U9E U-96MF1U9 45 A U-96MF1U9E...

  • Page 29: Diameter For Power Supply System

    4-3. Wiring System Diagram Indoor unit (No. 1) Outdoor unit Power supply INV unit 208 / 230V, 60Hz, 1-PH Power supply Ground 208 / 230V, 60Hz, 3-PH Remote Controller Ground Indoor Inter-outdoor unit control wiring unit (No. 2) Outdoor unit Power supply INV unit 208 / 230V, 60Hz, 1-PH...
  • Page 30 CAUTION (1) When linking outdoor units in a network, disconnect the terminal extended from the short plug (CN003, 2P Black, location: right bottom on the outdoor main control PCB) from all outdoor units except any one of the outdoor units. (When shipping: In shorted condition.) For a system without link (no connection wiring between outdoor units), do not remove the short plug.
  • Page 31 Loose wiring may cause the terminal to overheat or result WARNING in unit malfunction. A fire hazard may also exist. Therefore, ensure that all wiring is tightly connected. When connecting each power wire to the terminal, follow the instructions on “How to connect wiring to the terminal”...

  • Page 32: How To Process Tubing

    5. HOW TO PROCESS TUBING Deburring The liquid tubing side is connected by a flare nut, and the gas Before After tubing side is connected by brazing. 5-1. Connecting the Refrigerant Tubing Use of the Flaring Method Many of conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units.

  • Page 33: 5-2. Connecting Tubing Between Indoor And

    Caution Before Connecting Tubes Tightly (1) Apply a sealing cap or water-proof tape to prevent dust or water from entering the tubes before they are used. Apply refrigerant lubricant (2) Be sure to apply refrigerant lubricant to the matching surfaces of the flare and union before connecting Fig.

  • Page 34: 5-3. Insulating The Refrigerant Tubing

    5-3. Insulating the Refrigerant Tubing Two tubes arranged together Liquid tubing Gas tubing Tubing Insulation ● Thermal insulation must be applied to all unit tubing, including the distribution joint (purchased separately). (Fig. 5-7) Insulation * For gas tubing, the insulation material must be heat Three tubes arranged together resistant to 248°F or above.

  • Page 35: 5-4. Taping The Tubes

    5-4. Taping the Tubes (1) At this time, the refrigerant tubes (and electrical wiring if local codes permit) should be taped together with armoring tape in 1 bundle. To prevent the condensation from overflowing the drain pan, keep the drain hose separate from the refrigerant tubing.

  • Page 36: Air Purging

    6. AIR PURGING Vacuum pump Manifold gauge Outlet Air and moisture in the refrigerant system may have Inlet undesirable effects as indicated below. ● pressure in the system rises ● operating current rises ● cooling (or heating) efficiency drops ● moisture in the refrigerant circuit may freeze and block capillary tubing Fig.
  • Page 37 (3) Do a leak test of all joints of the tubing (both indoor Manifold valve and outdoor) and all service valves. Bubbles indicate a leak. Wipe off the soap with a clean cloth Pressure after a leak test. gauge (4) After the system is found to be free of leaks, relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder.
  • Page 38 Manifold valve (2) When the desired vacuum is reached, close the “Lo” knob of the manifold valve and turn off the vacuum Pressure pump. Please confirm that the gauge pressure is gauge under –14.7 psig (–755 mmHg, 5 Torr) after 4 to 5 Valve minutes of vacuum pump operation.

  • Page 39: Test Run

    7. TEST RUN 7-1. Preparing for Test Run ● Before attempting to start the air conditioner, check the following. (1) The control wiring is correctly connected and all electrical connections are tight. (Power must be turned ON at least 5 hours before (2) The transportation pads for the indoor fan have attempting test run) been removed.

  • Page 40: Test Run Procedure

    7-2. Test Run Procedure Items to Check Before the Test Run Recheck the items to check before the test run. 1. Turn the remote power switch on at least 5 hours before the test, in order to energize the crankcase heater. 2.
  • Page 41 7-3. Main Outdoor Unit PCB Setting CN003 CN101 CN100 S007 S006 S005 S004 S003 S002 Fig. 7-4...
  • Page 42 ● Examples of the No. of indoor units settings (S005, S004) Indoor unit setting (S005) Indoor unit setting (S004) No. of indoor units (3P DIP switch, blue) (Rotary switch, red) 10 20 30 1 unit (factory setting) Set to 1 All OFF 11 units 1 ON...

  • Page 43: Auto Address Setting

    7-4. Auto Address Setting Basic wiring diagram: Example (1) If link wiring is not used (The inter-unit control wires are not connected to multiple refrigerant systems.) Indoor unit addresses can be set without operating the compressors. No. 1 (main outdoor unit) settings No.
  • Page 44 Basic wiring diagram: Example (2) * When multiple outdoor main units exist, remove the socket that is If link wiring is used used to short-circuit the terminal plug (CN003) from all outdoor No. 1 (main outdoor unit) settings main unit PCBs except for one unit. No.
  • Page 45 Case 2 Automatic Address Setting (no compressor operation) ● Indoor and outdoor unit power can be turned ON for each system separately. Indoor unit addresses can be set without operating the compressors. Automatic Address Setting from Outdoor Unit 1. On the No. 1 (main) unit control PCB, set the unit No. switch (S007) to (unit No.
  • Page 46 Case 3A Automatic Address Setting in Heating Mode ● Indoor and outdoor unit power cannot be turned ON for each system separately. In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating. Therefore perform this process only after completing all refrigerant tubing work.
  • Page 47 Case 3B Automatic Address Setting in Cooling Mode ● Indoor and outdoor unit power cannot be turned ON for each system separately. In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating. Therefore perform this process only after completing all refrigerant tubing work.
  • Page 48 Display during automatic address setting ● On outdoor main unit PCB * Do not short-circuit the automatic address setting pin (CN100) again while automatic address setting is in progress. Doing so will cancel the setting operation and will cause LEDs 1 and 2 to turn OFF.
  • Page 49 Request concerning recording the indoor/outdoor unit combination Nos. After automatic address setting has been completed, be sure to record them for future reference. List the outdoor main unit system address and the addresses of the indoor units in that system in an easily visible location (next to the nameplate), using a permanent marking pen or similar means that cannot be abraded easily.
  • Page 50 7-7. Meaning of Alarm Messages Table of Self-Diagnostics Functions and Description of Alarm Displays Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on the wired remote controller. ●...
  • Page 51 Alarm Possible cause of malfunction message Activation of Protective device in indoor unit Thermal protector in indoor unit fan motor is activated. <<P01>> protective device is activated. Improper wiring connections of ceiling panel. <<P09>> Float switch is activated. <<P10>> sensor (detects low oxygen level) activated Protective device in outdoor unit Incorrect discharge temperature.
  • Page 52 Alarm messages displayed on system controller Serial Error in transmitting serial Indoor or main outdoor unit is not operating correctly. communication communication signal Mis-wiring of control wiring between indoor unit, main outdoor unit and errors system controller. Mis-setting Error in receiving serial Indoor or main outdoor unit is not operating correctly.
  • Page 56 DC0811-21111 Printed in Japan...

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