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INSTALLATION INSTRUCTIONS
Air Conditioner
This air conditioner uses the refrigerant R410A.
Model No.
Outdoor Units
Type Outdoor Unit Type
LE2 mini VRF System
High-Durable model
*
• To be connecting Indoor Unit
Indoor Units
Type
Indoor Unit Type
D1
1-Way Cassette
L1
2-Way Cassette
U2
4-Way Cassette
Y2
4-Way Cassette 60 × 60
K1
Wall-Mounted
K2
Wall-Mounted
T2
Ceiling
F2
Low Silhouette Ducted
M1 Slim Low Static Ducted
P1
Floor Standing
R1
Concealed Floor Standing
Z1
Slim Type Ducted
Type
Indoor Unit Type
D1
1-Way Cassette
L1
2-Way Cassette
U2
4-Way Cassette
K1
Wall-Mounted
K2
Wall-Mounted
T2
Ceiling
F2
Low Silhouette Ducted
High Static Pressure Ducted
E1
Ducted
P1
Floor Standing
R1
Concealed Floor Standing
Z1
Slim Type Ducted
Read through the Installation Instructions before you proceed with the installation. In particular, you will need to read under
the " IMPORTANT ! " section at the top of the page.
Rated Capacity
4 HP
5 HP
U-4LE2R5
U-5LE2R5
U-4LE2R5E*
U-5LE2R5E* U-6LE2R5E*
22
S-28MD1E5
S-22ML1E5
S-28ML1E5
S-22MU2E5A S-28MU2E5A S-36MU2E5A S-45MU2E5A S-56MU2E5A S-60MU2E5A
S-22MY2E5A S-28MY2E5A S-36MY2E5A S-45MY2E5A S-56MY2E5A
S-22MK2E5A S-28MK2E5A S-36MK2E5A S-45MK2E5A S-56MK2E5A
S-22MF2E5A S-28MF2E5A S-36MF2E5A S-45MF2E5A S-56MF2E5A S-60MF2E5A
S-22MM1E5A S-28MM1E5A S-36MM1E5A S-45MM1E5A S-56MM1E5A
S-22MP1E5
S-28MP1E5
S-22MR1E5
S-28MR1E5
S-22MZ1H4A S-28MZ1H4A S-36MZ1H4A S-45MZ1H4A S-56MZ1H4A S-60MZ1H4A
71 / 73
S-73MD1E5
S-73ML1E5
S-73MU2E5A S-90MU2E5A S-106MU2E5A S-140MU2E5A S-160MU2E5A
S-73MK1E5A
S-73MK2E5A
S-73MT2E5A
S-73MF2E5A S-90MF2E5A S-106MF2E5A S-140MF2E5A S-160MF2E5A
S-73ME1E5
S-90ME1R5
S-71MP1E5
S-71MR1E5
S-73MZ1H4A
HP = horsepower
6 HP
U-6LE2R5
Rated Capacity
28
36
S-36MD1E5
S-45MD1E5
S-36ML1E5
S-45ML1E5
S-45MK1E5A S-56MK1E5A
S-36MT2E5A S-45MT2E5A S-56MT2E5A
S-36MP1E5
S-45MP1E5
S-36MR1E5
S-45MR1E5
Rated Capacity
90
106 / 112
S-106MK1E5A
S-106MK2E5A
S-106MT2E5A S-140MT2E5A
S-106ME1E5 S-140ME1E5
S-112ME1R5 S-140ME1R5 S-160ME1R5
45
56
S-56MD1E5
S-56ML1E5
S-56MP1E5
S-56MR1E5
140
160
60
ACXF60-16410
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Table of Contents
Related Manuals for Panasonic U-4LE2R5
Summary of Contents for Panasonic U-4LE2R5
- Page 1 This air conditioner uses the refrigerant R410A. Model No. Outdoor Units HP = horsepower Rated Capacity Type Outdoor Unit Type 4 HP 5 HP 6 HP U-4LE2R5 U-5LE2R5 U-6LE2R5 LE2 mini VRF System U-4LE2R5E* U-5LE2R5E* U-6LE2R5E* High-Durable model • To be connecting Indoor Unit Indoor Units...
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Page 2: Important
IMPORTANT! SPECIAL PRECAUTIONS Please Read Before Starting WARNING When Wiring This air conditioner must be installed by the sales dealer WARNING or installer. This information is provided for use only by authorized ELECTRICAL SHOCK CAN persons. CAUSE SEVERE PERSONAL For safe installation and trouble-free operation, you INJURY OR DEATH. - Page 3 • When operating in emergency backup …In an Area with High Winds mode and switching from grid power to Securely anchor the outdoor unit down off-grid generator power or vice versa to with bolts and a metal frame. Provide a provide power for the air conditioner, be suitable air baffle.
- Page 4 Others • Do not leak refrigerant while piping work for an installation or re-installation, and while repairing refrigeration parts. WARNING CAUTION Handle liquid refrigerant carefully as it may cause frostbite. • Do not sit or step on the unit. When Servicing You may fall down accidentally.
- Page 5 Check of Density Limit (3) If an indoor unit is installed in each partitioned room and the refrigerant tubing is interconnected, the smallest room Check the amount of refrigerant in the system and of course becomes the object. But when mechanical floor space of the room according to the legislation on ventilation is installed interlocked with a gas leakage refrigerant drainage.
- Page 6 Precautions for Installation Using New Refrigerant 1. Care regarding tubing 1-1. Process tubing ● Material: Use seamless phosphorous deoxidized copper tube for refrigeration. Wall thickness shall comply with the applicable legislation. The minimal wall thickness must be in accordance with the table below. ●...
- Page 7 Important Information Regarding The Refrigerant Used This product contains fluorinated greenhouse gases. Do not vent gases into the atmosphere. Refrigerant type: R410A value: 2088 GWP = global warming potential Periodical inspections for refrigerant leaks may be required depending on European or local legislation. Please contact your local dealer for more information.
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Page 8: Table Of Contents
CONTENTS Page Page IMPORTANT! ........2 5-5. -
Page 9: General
1. GENERAL This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the outdoor unit and make sure all accessory parts listed are with the system before beginning. For the renewal installation, refer to the Technical Data. -
Page 10: 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 figure below. Main tubing length (maximum tubing size) LM = LA + LB … Main distribution tubes LC – LH are selected according to the capacity after the distribution joint. Sizes of indoor unit connection tubing 1 –... -
Page 11: Tubing Size
1-6. Tubing Size Table 3 : Main Tubing Size (LA) ■ Unit: mm Outdoor unit horsepower 4 HP 5 HP 6 HP ø15.88 Gas tube Flare connection ø9.52 Liquid tube Flare connection Gas tube Liquid tube * The refrigerant tubing should be used with R410A refrigerant. Table 4 : Main Tubing Size After Distribution (LB, LC...) ■... -
Page 12: Straight Equivalent Length Of Joints
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 6 : Straight Equivalent Length of Joints Gas tubing size (mm) 12.7 15.88 19.05 90° elbow 0.30 0.35 0.42... -
Page 13: System Limitations
1-9. System Limitations Table 10 : System Limitations Outdoor unit horsepower 4 HP 5 HP 6 HP Number of max. connectable indoor units Max. allowable indoor/outdoor capacity ratio 50-130% Always check the gas density limit for WARNING 229.5 the room in which the unit is installed. 216.0 202.5 1-10. -
Page 14: Installing Distribution Joint
1-11. Installing Distribution Joint (1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT” enclosed with the optional distribution joint kit (CZ-P160BK2). ● When connecting a branch tubing to the indoor unit directly, it is necessary for each branch tubing to install at a positive angle with respect to horizontal in order to prevent accumulation of refrigerant oil in stopped units. -
Page 15: Optional Distribution Joint Kits
1-12. Optional Distribution Joint Kits See the installation instructions packaged with the distribution joint kit for the installation procedure. Table 11 Cooling capacity Model name Remarks after distribution 1. CZ-P160BK2 22.4 kW or less * For indoor unit * In case the total capacity of indoor units connected after distribution exceeds the capacity of the outdoor unit, select the distribution tubing size for the capacity of the outdoor unit. -
Page 16: Example Of Tubing Size Selection And Refrigerant Charge Amount
1-13. Example of Tubing Size Selection and Refrigerant Charge Amount ● Charging procedure Be sure to charge with R410A refrigerant in liquid form. 1. After performing a vacuum, charge with refrigerant from the liquid tubing side. At this time, all valves must be in the “fully closed” position. - Page 17 Example: Checking of limit density Density limit is determined on the basis of the size of a room using an indoor unit of minimum capacity. For instance, when 6 HP an indoor unit is used in a room (floor area 8.00 m ×...
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Page 18: Selecting The Installation Site
2. SELECTING THE INSTALLATION SITE (2) Obstructions on the left side, right side and rear side (Front side and above the unit are opened). 2-1. Outdoor Unit AVOID: ● heat sources, exhaust fans, etc. Exhaust fan Hot air 150 mm 250 mm or more or more... - Page 19 (6) Obstructions on the left side, right side and rear side (Front side and above the unit are opened). * The outdoor units require necessary space to unscrew on the rear side for maintenance and if a sufficient maintenance space is provided on the rear side (400 mm), the space of 150 mm 250 mm 250 mm...
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Page 20: Air-Discharge Chamber For Top Discharge
2-2. Air-Discharge Chamber for Top Discharge 2-4. Precautions for Installation in Heavy Snow Areas Be sure to install an air-discharge chamber in the field when: (1) The platform should be higher than the maximum snow ● it is difficult to keep a sufficient space between the air depth + 500 mm. -
Page 21: Dimensions Of Air-Discharge Chamber
2-5. Dimensions of Air-Discharge Chamber Reference diagram for air-discharge chamber (field supply) Unit: mm Air intake Air intake 4-ø13 Anchor bolt hole Air discharge (116) 43.5 (324.5) Air discharge Air intake Air intake 2-6. Dimensions of Air-Discharge Chamber for Top Discharge Reference diagram for air-discharge chamber for top discharge (field supply) * When setting the air-discharge direction further upward greater than that of the section 2-5. -
Page 22: Dimensions Of Snow-Proof Vents
2-7. Dimensions of Snow-Proof Vents Reference diagram for snow-proof vents (field supply) Unit: mm (32.5) 233.5 Air intake Air intake 4-ø13 Anchor bolt hole Air discharge 1284 (29.5) 310.5 (304) Air discharge Air intake Air intake Required space around outdoor unit when using snow-proof vents [Obstacle to the rear of unit] ● Top is open: Unit: mm... -
Page 23: How To Install The Outdoor Unit
3. HOW TO INSTALL THE OUTDOOR UNIT 3-2. Drainage Work Follow the procedure below to ensure adequate draining for the outdoor unit. 3-1. Installing the Outdoor Unit For the drain port dimensions, see the section 3-1. ● Use concrete or a similar material to create the base, and ●... -
Page 24: Electrical Wiring
4. ELECTRICAL WIRING 4-1. General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. WARNING (2) This equipment is strongly recommended to be installed with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). -
Page 25: Recommended Wire Length And Wire Diameter For Power Supply System
4-2. Recommended Wire Length and Wire Diameter for Power Supply System Outdoor unit (A) Power supply (A) Power supply Time delay fuse or Time delay fuse or circuit capacity circuit capacity Wire size Max. length Wire size Max. length 6 mm² 36 m 25 A 4 HP... -
Page 26: Wiring System Diagram
4-3. Wiring System Diagram Indoor unit (No. 1) Power supply Outdoor unit (single-phase) 220-230-240V ~ 50-60 Hz INV unit Power supply Ground Remote 230-240V ~ 50Hz controller Ground Indoor unit (No. 2) (SG : Shows the ground for the shielded cable.) Power supply 220-230-240V ~ 50-60 Hz Ground... - Page 27 CAUTION (1) When linking outdoor units in a network, see the section “ATTENTION!”. (2) Do not install the inter-unit control wiring in a way that forms a loop. Outdoor unit Outdoor unit Outdoor unit Prohibited Prohibited Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit...
- Page 28 (5) Use shielded wires for inter-unit control wiring (C) and ground the shield Shielded wire on both sides, otherwise misoperation from noise may occur. Connect wiring as shown in the section “4-3. Wiring System Diagram.” (6) • Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 5 or 3 *1.5 mm flexible cord.
- Page 29 ■ Wiring sample Earth Inter-unit control wiring Power supply Use this screw when connecting to ground for the inter-unit control wiring. Torque value of power supply terminal board: 2.0 N·m ± 0.05 N·m {20 kgf·cm ± 0.5 kgf·cm} Torque value of communication terminal board: 1.3 N·m ± 0.1 N·m {13 kgf·cm ± 1 kgf·cm} ATTENTION: Comply with the torque values.
- Page 30 Connection for demand and forced stop ■ Connection procedure Be sure to always turn the power off first when setting up the wire and cable connections. Failure to do so may lead to electric shock or unit failure. Forced Stop connection for the next system The next system Outdoor unit...
- Page 31 When connecting the demand controller input Termrial no. for Description demand section It is possible to choose the desired demand level. DRM3 Approx. 75% of rated power input See the table shown on the right. DRM2 Approx. 50% of rated power input DRM1 Compressor off Connect the wiring (4-wire) to the Demand section (DRM1,...
- Page 32 When connecting to the next system unit Forced Stop input can be transferred to the next system unit. ● When using the Forced Stop input, connect the wiring to the terminal points 1 and 2 on the right side of the lower part of the terminal ●...
- Page 33 ■ Wiring procedure Follow the wiring procedure below for terminal connection. (1) Set the wiring and cables for the power and signal lines to the outdoor unit together, and secure each wire and cable with the tie. (2) Secure and clamp the power and signal lines with the tie, set up close to the valve. (3) Set up the wiring and cable for the outdoor unit piping and secure with a tie.
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Page 34: How To Process Tubing
Caution Before Connecting Tubes Tightly 5. HOW TO PROCESS TUBING The liquid tubing side is connected by a flare nut, and the gas (1) Apply a sealing cap or water-proof tape to prevent dust or tubing side is connected by brazing. water from entering the tubes before they are used. -
Page 35: Connecting Tubing Between Indoor And Outdoor Units
5-2. Connecting Tubing Between Indoor and Outdoor ● In order to prevent damage to the flare caused by over- Units tightening of the flare nuts, see the table as a guide when tightening. (1) Tightly connect the indoor-side refrigerant tubing extended from the wall with the outdoor-side tubing. -
Page 36: Insulating The Refrigerant Tubing
5-3. Insulating the Refrigerant Tubing Two tubes arranged together Tubing Insulation Gas tube Liquid tube ● Standard Selection of Insulation Material Under the environment of the high temperature and high humidity, the surface of the insulation material is easy to become condensation. This will result in leakage and dew drop. - Page 37 If the exterior of the outdoor unit valves has been finished with a square duct CAUTION covering, make sure you allow sufficient space to use the valves and to allow the panels to be attached and removed. Taping the flare nuts Wind the white insulation tape around the flare nuts at the gas tube connections.
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Page 38: Taping The Tubes
5-4. Taping the Tubes 5-5. Finishing the Installation (1) At this time, the refrigerant tubes (and electrical wiring if After finishing insulating and taping over the tubing, use sealing local codes permit) should be taped together with armoring putty to seal off the hole in the wall to prevent rain and draft tape in 1 bundle. - Page 39 6. AIR PURGING Manifold gauge Air and moisture in the refrigerant system may have undesirable effects as indicated below. ● pressure in the system rises ● operating current rises ● cooling (or heating) efficiency drops ● moisture in the refrigerant circuit may freeze and block capillary tubing ●...
- Page 40 (4) Do a leak test of all joints of the tubing (both indoor and Manifold valve outdoor) and both gas and liquid service valves. Bubbles indicate a leak. Wipe off the soap with a clean cloth after a leak test. Vacuum gauge (5) After the system is found to be free of leaks, relieve the...
- Page 41 Manifold valve Use a cylinder designed for use with CAUTION R410A respectively. Pressure gauge Charging additional refrigerant ● Charging additional refrigerant (calculated from the liquid Valve tube length as shown in the section “1-8. Additional Refrigerant Charge”) using the liquid tube service valve. ●...
- Page 42 7. TEST RUN (6) Both the gas and liquid tube service valves are open. If not, open them now. 7-1. Preparing for Test Run ● Before attempting to start the air conditioner, check the following. (1) All loose matter is removed from the cabinet especially steel filings, bits of wire, and clips.
- Page 43 7-2. Test Run Procedure Note: Recheck before the test run. These settings are not made on the indoor unit P.C. board. <Outdoor main unit control P.C. board> Number of indoor units Set the number of indoor units. setting switch (SW3 and SW4) CASE 1 Are indoor and outdoor control wires (Check link wiring.)
- Page 44 7-3. Main Outdoor Unit P.C. Board Setting SW 2 SW 1 SW 3 SW 4 STOP A. ADD MODE CN-SILENT LED 1 LED 2 CN-ROM CN-RC CN-TERMINAL CN-EMG CN-OC For detailed drawing, see the page 46.
- Page 45 ● Examples of the number of indoor units settings (SW3, SW4) Indoor unit setting (SW3) Indoor unit setting (SW4) Number of indoor units (1P DIP switch) (Rotary switch) 1 - 9 unit Set to 1 - 9 (factory setting : 1 unit ) DO NOT exceed the maximum number of indoor units when making connections.
- Page 46 SW 1 SW 2 STOP SW 3 MODE SW 4 A. ADD CN-SILENT CN-RC LED 1 LED 2 CN-TERMINAL CN-ROM CN-OC CN-EMG ● Name and Function of Each Switch on Outdoor Unit Control P.C. Board Function Switch Remarks Changes to cooling/heating mode. When in normal operation: When short circuited the COOL side, indoor unit operation in the same refrigerant system changes to all cooling mode.
- Page 47 7-4. Auto Address Setting Example: Basic Wiring Diagram (1) • Case of no link wiring 3P terminating (Inter-unit control wiring is not connected to a multiple system.) resistance pin Indoor unit address setting is possible without starting the compressor. (SHORT side) Unit 1 setting (outdoor main unit) * It is not necessary to control the terminating resistance pin (3P) (CN-TERMINAL) on the...
- Page 48 Example: Basic Wiring Diagram (2) • Case of link wiring * See the section “ATTENTION!”. Setting of terminal pin (CN-TERMINAL) No. 1 refrigerant system Refrigerant circuit No. 1 Unit No. 1 (Main) : short-circuit (at shipment) Unit 1 setting (outdoor main unit) Refrigerant circuit No.
- Page 49 Between conductors ● Final check before operation Wire Final check must be done under the conditions of inter-outdoor unit control wiring connected to the centralized control system and the resistor between conductors must be measured by a Megger. Check if it is showing between 30Ω and 120Ω. Wire If the resistance value is out of range, check adjustment of the termination resistor again.
- Page 50 Auto Address Setting from the High-spec Wired Remote Controller (CZ-RTC5A) 1 Keep pressing the buttons simultaneously for 4 or more seconds. The “Maintenance func” screen appears on the LCD display. 2 Press the button to see each menu. 20:30 (THU) If you wish to see the next screen instantly, press the button.
- Page 51 Display During Auto Address Setting ● On the surface of outdoor unit control P.C. board * Do not short circuit the A.ADD pin again during auto address setting. LEDs 1 and 2 go out and address setting is interrupted. * When auto address setting is normally completed, both LEDs 1 and 2 go out. Blinks alternately In other cases, correct settings by referring to the following table and perform auto address setting again.
- Page 52 Checking the indoor unit addresses Use the remote controller to check the indoor unit address. CZ-RTC5A (High-spec wired remote controller) 1 Keep pressing the buttons 3 The “Simple settings” screen appears on the LCD display. simultaneously for 4 or more seconds. Select the “Unit no.”...
- Page 53 7-5. Setting Test Run Remote Controller CZ-RTC5A (High-spec wired remote controller) 20:30 (THU) 1 Keep pressing the buttons simultaneously for 4 or more seconds. The “Maintenance func” screen appears on the LCD display. START Maintenance func 20:30 (THU) 1. Outdoor unit error data 2.
- Page 54 7-6. Caution for Pump Down Pump down means refrigerant gas in the system is returned to the outdoor unit. Pump down is used when the unit is to be moved, or before servicing the refrigerant circuit. (Refer to the Service Manual) This outdoor unit cannot collect more than the rated refrigerant amount as shown by the ●...
- Page 55 • If the alarm display “E15”, “E16” and “E20” appear after auto address setting began, check the following items. Alarm display Alarm contents Recognized number of indoor units at the time of auto address setting are fewer than that of indoor units set by SW3 and SW4 on outdoor main unit P.C.
- Page 56 Remote control display Alarm contents Two or more indoor units are set as main, in the group controlled indoor units. Fewer indoor units are found in Auto Addressing than the setting on outdoor PCB. More indoor units are found in Auto Addressing than the setting on outdoor PCB. No response from sub indoor to the main indoor unit in group control wiring.
- Page 57 • Contents of alarm display on remote controller For the remote controller, there are other alarm contents listed on the following table besides the alarm display on outdoor main unit control P.C. board. Wired remote Detected contents control display Indoor unit does not respond to remote controller. <E01>...
- Page 58 ATTENTION! Adjustment of terminating resistance (pin) is necessary. Communication failure will occur unless adjustment is made correctly. • Terminating resistance (pin) is mounted on outdoor unit control P.C. board. • When connecting central controller, interface or peripheral equipment, adjustment of terminating resistance (pin) is necessary. Although the connection is not made, confirmation is necessary for VRF systems.
- Page 59 ─ NOTE ─...
- Page 60 ACXF60-16410 Printed in Malaysia DC0517-20717...