Panasonic S-26PU2U6 Installation Instructions Manual
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INSTALLATION INSTRUCTIONS
Air Conditioner
This air conditioner uses the refrigerant R410A.
Model No.
Indoor Units
Nominal Capacity
Type
Indoor Unit Type
26
36
42
S-26PU2U6
S-36PU2U6
S-42PU2U6
U2
4-Way Cassette 36" × 36"
(CZ-36KPU3U)*
(CZ-36KPU3U)*
(CZ-36KPU3U)*
*Panel (optional parts)
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.
F616836
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Table of Contents
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Summary of Contents for Panasonic S-26PU2U6
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Page 1: Installation Instructions
INSTALLATION INSTRUCTIONS Air Conditioner This air conditioner uses the refrigerant R410A. Model No. Indoor Units Nominal Capacity Type Indoor Unit Type S-26PU2U6 S-36PU2U6 S-42PU2U6 4-Way Cassette 36” × 36” (CZ-36KPU3U)* (CZ-36KPU3U)* (CZ-36KPU3U)* *Panel (optional parts) 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. F616836... -
Page 2: Important
IMPORTANT! When Transporting Please Read Before Starting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees This air conditioning system meets strict safety and when lifting to reduce strain on your back. Sharp edges or operating standards. As the installer or service person, it is thin aluminum fins on the air conditioner can cut your an important part of your job to install or service the fingers. system so it operates safely and efficiently. When Installing… For safe installation and trouble-free operation, you Select an installation location which is rigid and strong must: enough to support or hold the unit, and select a location for ● Carefully read this instruction booklet before beginning. easy maintenance. ● Follow each installation or repair step exactly as shown. …In a Room ● This air conditioner shall be installed in accordance with Properly insulate any tubing run inside a room to prevent National Wiring Regulations. “sweating” that can cause dripping and water damage to ● Pay close attention to all warning and caution notices walls and floors. given in this manual. -
Page 3: Check Of Density Limit
• Do not leak refrigerant while piping work for an installation or re-installation, and while repairing CAUTION refrigeration parts. Handle liquid refrigerant carefully as it may cause • Do not touch the air inlet or the sharp frostbite. aluminum fins of the outdoor unit. You When Servicing may get injured. • Ventilate any enclosed areas when installing or • Turn the power OFF at the main power box (mains) testing the refrigeration system. Leaked before opening the unit to check or repair electrical refrigerant gas, on contact with fire or heat, can parts and wiring. produce dangerously toxic gas. • Keep your fingers and clothing away from any moving • Confirm after installation that no refrigerant gas parts. is leaking. If the gas comes in contact with a • Clean up the site after you finish, remembering to burning stove, gas water heater, electric room check that no metal scraps or bits of wiring have been heater or other heat source, it can cause the left inside the unit. generation of toxic gas. Others WARNING • This product must not be modified or WARNING disassembled under any circumstances. -
Page 4: Table Of Contents
CONTENTS Page Page IMPORTANT ........2 7. -
Page 5: General
1. GENERAL Part Name Figure Q’ty Remarks This booklet briefly outlines where and how to install the Full-scale air conditioning system. Please read over the entire set of installation Card board instructions for the indoor and outdoor units and make sure all diagram accessory parts listed are with the system before beginning. Part Name Figure Q’ty Remarks 1-1. Tools Required for Installation (not supplied) Wire 1. Flathead screwdriver mounting 2. Phillips head screwdriver bracket 3. Knife or wire stripper 4. Tape measure Wire cover 5. Carpenter’s level 6. Sabre saw or keyhole saw Clamper 7. Hacksaw... -
Page 6: Selecting The Installation Site
● allow room for operation and maintenance as well as unrestricted air flow around the unit. ● install the unit within the maximum elevation difference above or below the outdoor unit and within a total tubing length (L) from the outdoor unit as detailed in the installation manual packed with the outdoor unit. ● allow room for mounting the remote controller about 3.3 ft. (1 m) off the floor, in an area that is not in direct sunlight or in the flow of cool air from the indoor unit. ● if the indoor unit is installed on the ceiling where the temperature or humidity inside is high (over 86°F(30°C)/RH: 70%), add insulating material to the surface of the unit to avoid dew condensation. ● keep the fire alarm and the air outlet at least 5 ft. (1.5 m) away from the unit. 3.3ft. (1 m) indoor unit indoor unit Ceiling Floor-to-ceiling height Model min. 3.3 ft. (1 m) Minimum Maximum S-26PU2U6 5.9ft. (1.8m) 11.8ft. (3.6m) min. 10 ft. (3 m) S-36PU2U6 5.9ft. (1.8m) 14.8ft. (4.5m) S-42PU2U6 Obstacles Fig. 2-1 NOT E If the floor-to-ceiling height exceeds 9.8ft. (3m), the wind speed distribution becomes poor. When changing the settings, refer to “7-3. Others” under the section “7. HOW TO INSTALL THE CEILING PANEL”. -
Page 7: How To Install The Indoor Unit
3. HOW TO INSTALL THE INDOOR UNIT ■ 4-Way Cassette Type (Type U2) Note: F or DC Fan Motor Tap Setting procedure for 4-Way Cassette, see page 22. 3-1. Preparation for Suspending Hole-in-anchor This unit uses a drain pump. Use a carpenter’s level to check Hole-in-plug Insert Concrete that the unit is level. 3-2. Suspending the Indoor Unit (1) Fix the suspension bolts securely in the ceiling using the method shown in the diagrams (Figs. 3-1 and 3-2), by attaching them to the ceiling support structure, or by any other method that ensures that the unit will be securely and Suspension bolt (M10 or 3/8") (field supply) safely suspended. (2) Follow Fig. 3-2 and Table 3-1 to make the holes in the Fig. -
Page 8: Placing The Unit Inside The Ceiling
3-3. Placing the Unit Inside the Ceiling This unit is equipped with the drain pump. Check a tape measure or carpenter’s level. Ceiling Air Before installing the ceiling panel, complete the work of conditioner drain pipe and refrigerant pipe installation. (1) When placing the unit inside the ceiling, determine the pitch of the suspension bolts using the supplied full-scale Full-scale... -
Page 9: Installing The Drain Pipe
3-5. Installing the Drain Pipe 3-5-1. Before Performing the Installation Drain Piping 1 ft. (300 mm) or less (as short as possible) (1) Limitations of Raising the Drain Pipe Connection Indoor unit CAUTION A : 2.79 ft. (850 mm) or lower Ceiling surface B : 2.2 ft. (670 mm) or lower The drain pipe can be raised to a maximum height of ● 2.79 ft. (850 mm) from the bottom surface of the ceiling. * Length of supplied drain pipe = 9-27/32” (250 mm) Do not attempt to raise it higher than 2.79 ft. (850 mm). Fig. 3-6 Doing so will result in water leakage. (Fig. 3-6) (2) Limitations of Drain Pipe Connection Air bleeder prohibited Upward gradient CAUTION prohibited Trap prohibited Indoor unit Do not install the drain pipe with an upward gradient from the ● drain port connection. This will cause the drain water to flow Fig. 3-7 backward and leak when the unit is not operating. (Fig. 3-7) Do not install an air bleeder as this may cause water to spray ●... - Page 10 3-5-2. Installing the Drain Hose CAUTION Do not apply force to the drain port when connecting the 3) Move the hose band so that the center position of the hose ● drain hose. Install and fix it near the indoor unit as close as band can be placed approx. 1-3/16” (30 mm) away from the external plate of the indoor unit. (Fig. 3-11) possible. 4) Screw the drain hose tightly facing the screw of the hose Do not use adhesive when connecting the drain port pipe ● band upward. (Torque: 22 - 30 lbf·inch (2.5 N·m - 3.4 N·m)) and the drain hose. (If the screw is tightened beneath the drain hose, the (1) How to Install the Drain Hose troubles will be generated.) Pay attention not to make hose band overlap the circular projection rib and the sealed 1) First insert the supplied hose band into the drain port pipe. circulation projection of the drain port hose. Then make sure the head of the screw is facing toward a 5) Move the drain socket showing in the direction of the arrow technical engineer when placing the screw of the hose band toward the drain hose and connect with the adhesive at an upward angle. (approx. 0.07 oz (2g)). 2) Insert the soft PVC socket of the supplied drain hose to the 6) Then connect the hard PVC pipe (field supply) on the drain port pipe. Do not use adhesive when connecting the opposite side of the drain socket. drain hose to the drain port pipe.
- Page 11 3-5-3. Checking the Drainage Be careful because the fan will start when you short the pin on the indoor control board. After wiring (refer to “4. ELECTRICAL WIRING”.) and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled water. (1) Connect power to the power terminal board (L1, L2 terminals) inside the electrical component box. (2) Slowly pour about 0.3 gal (1,200 cc) of water into the drain pan to check drainage. (Fig. 3-12) (3) Short the check pin (CHK) on the indoor control board and operate the drain pump. Check the water flow through the transparent drain pipe and see if there is any leakage. (4) When the check of drainage is complete, open the check pin (CHK) and remount the tube cover. (5) Confirm the “Checkpoint” under the section “8. PRECAUTIONS ON TEST RUN” after installation of indoor and outdoor units, panels and electrical wiring. Drainage check Over 3-15/16” (100 mm) Drain pan outlet Plastic container for water intake Water (Approx. 0.3gal (1,200 cc)) Fig. 3-12 Indoor Unit control PC board CAUTION Be careful because the fan will start when you short the pin on the indoor control board.
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Page 12: 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). Otherwise, it may cause electrical shock and fire in case of equipment breakdown or insulation breakdown. Earth Leakage Circuit Breaker (ELCB) must be incorporated in the fixed wiring in accordance with the wiring regulations. The Earth Leakage Circuit Breaker (ELCB) must be an approved 15 A, having a contact separation in all poles. (3) To prevent possible hazards from insulation failure, the unit must be grounded. (4) Each wiring connection must be done in accordance with the wiring system diagram. Wrong wiring may cause the unit to misoperate or become damaged. (5) Do not allow wiring to touch the refrigerant tubing, compressor, or any moving parts of the fan. (6) Unauthorized changes in the internal wiring can be very dangerous. The manufacturer will accept no responsibility for any damage or misoperation that occurs as a result of such unauthorized changes. (7) Regulations on wire diameters differ from locality to locality. For field wiring rules, please refer to your LOCAL ELECTRICAL CODES before beginning. You must ensure that installation complies with all relevant rules and regulations. (8) To prevent malfunction of the air conditioner caused by electrical noise, care must be taken when wiring as follows: ● The remote control wiring and the inter-unit control wiring should be wired apart from the inter-unit power wiring. ● Use shielded wires for inter-unit control wiring between units and ground the shield on single side. (9) If the power supply cord of this appliance is damaged, it must be replaced by a repair shop designated by the manufacturer, because special- purpose tools are required. 4-2. -
Page 13: Recommended Wire Length And Wire Diameter For Power Supply System
4-3. Recommended Wire Length and Wire Diameter for Power Supply System Indoor unit Time delay fuse or Type circuit capacity 15 A Control wiring (A) Inter-unit control wiring (B) Remote control (C) Control wiring (between outdoor wiring for group control and indoor units) AWG #18 AWG #18 AWG #18... - Page 14 Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also occur. CAUTION Therefore, ensure that all wiring is tightly connected. When connecting each power wire to the terminal, follow the instructions on “How to connect wiring to the terminal” and fasten the wire securely with the fixing screw of the terminal board. How to connect wiring to the terminal Stranded wire ■ For stranded wiring Ring (1) Cut the wire end with cutting pliers, then strip the insulation pressure...
- Page 15 Locknut Inter-unit control wiring Power supply wiring Remote control wiring Conduit (field supply) Remote control wiring Power supply wiring Inter-unit control wiring Use this screw when connecting the shield for the remote control wiring to ground. Screw (Supplied) Wire cover (Supplied) * T ake care not to pinch the wires when covering by the wire cover.
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Page 16: How To Process Tubing
5. HOW TO PROCESS TUBING Deburring The liquid tubing side is connected by a flare nut, and the Before After gas 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. In this method, the copper tubes are flared at each end and connected with flare nuts. Fig. 5-1 Flaring Procedure with a Flare Tool (1) Cut the copper tube to the required length with a tube cutter. It is recommended to cut approx. 1 – 2 ft. (30 - 50 cm) longer than the tubing length you estimate. Copper (2) Remove burrs at the end of the copper tube with a tube tubing reamer or a similar tool. This process is important and should be done carefully to make a good flare. (Fig. 5-1) -
Page 17: Connecting Tubing Between Indoor And Outdoor Units
Cautions During Brazing ● Replace air inside the tube with nitrogen gas to prevent copper oxide film from forming during the brazing process. (Oxygen, carbon dioxide and Freon are not acceptable.) ● Do not allow the tubing to get too hot during brazing. The nitrogen gas inside the tubing may overheat, causing refrigerant system valves to become damaged. -
Page 18: Taping The Tubes
If the exterior of the outdoor unit valves has been finished with a Flare insulator (supplied) square duct covering, make sure you WARNING Insulation tape (white) allow sufficient space to access the Flare union (supplied) valves and to allow the panels to be attached and removed. Unit side Taping the flare nuts Wind the white insulation tape around the flare nuts at the gas... -
Page 19: How To Install The Timer Remote Controller Or High-Spec Wired Remote Controller (Optional Part)
6. HOW TO INSTALL THE TIMER REMOTE CONTROLLER OR HIGH-SPEC WIRED REMOTE CONTROLLER (OPTIONAL PART) NOT E Refer to the Operating Instructions attached to the optional Timer Remote Controller or optional High-spec Wired Remote Controller. 7. HOW TO INSTALL THE CEILING PANEL ■ 4-Way Cassette Type (CZ-36KPU3U) Accessories Ceiling panel ×1 Washer head screws ×4 Installation notes ×1 Screws ×4 M5 × 1-37/64” (40mm) 5/32” × 15/32” (4mm × 12mm) ø11/16”(ø18mm) 7-1. Preparation for Ceiling Panel Installation (1) Checking the unit position 1) C heck that the ceiling hole is within the following range: Ceiling... -
Page 20: How To Install The Ceiling Panel
7-2. How to Install the Ceiling Panel (3) Installing the ceiling panel The power must be turned ON in order to change the flap angle. (Do (1) Removing the air-intake grille not attempt to move the flap by hand. Doing so may damage the flap.) 1) R emove the 2 screws on the latch of the air-intake grille. 1) H ang the temporary latches on the inside of the ceiling panel to (Fig. 7-1) (Reattach the air-intake grille after installation of the receptacle on the unit to temporarily attach the ceiling panel the ceiling panel.) in place. (Fig. 7-4) 2) S lide the air-intake grille catches in the direction shown by The ceiling panel must be installed in the correct direction ● the arrows 1 to open the grille. (Fig. 7-1) relative to the unit. Align the REF. PIPE and DRAIN marks on the Air-intake grille Ceiling panel ceiling panel corner with the correct positions on the unit. When removing the ceiling panel, push the temporary latches ● Screw outward while holding the ceiling panel. Latch (Fig. 7-4) Receptacle on the... - Page 21 (5) How to Attach the Corner & Air-Intake Grille CAUTION A. Attaching the corner cover 1) C heck that the safety cord from the corner cover is fastened If the screws are not sufficiently tightened, trouble such ● to the ceiling panel pin, as shown in the figure below. as that shown in the figure below may occur. 2) U se the supplied screws to attach the corner cover to the Be sure to tighten the screws securely. ceiling panel.
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Page 22: Others
Air-blocking material 0006 Fan Motor Tap Setting”. (for 2-way air discharge) 5 P ress the button. <Criteria based on the ceiling height> (The display stops blinking and remains lit, and setting Remote is completed.) Setting controller S-36PU2U6 S-26PU2U6 * I f air-blocking material is used, use the same setting data S-42PU2U6 procedure as in steps 3 – 5 above and change the Item code 5d setting for item code “62” to “0000.” 0001 Over 10.8ft. (3.3m) Over 12.8ft. (3.9m) I f you wish to change the selected indoor unit, follow the step 2. 0003 Max. 12.8ft. (3.6m) Max. 14.8ft. (4.5m) 6 P ress the button to return to normal remote controller display. - Page 23 <Procedure of CZ-RTC3 /CZ-RTC5> Stop the system before performing these steps. and buttons 1 Keep pressing the simultaneously for 4 or more seconds. The “Maintenance func” screen appears on the LCD display. button. 6 Press the The “Exit detailed settings and restart?” (Detailed setting- end) screen appears on the LCD display. Select “YES” and press the button. or button to see each menu. 2 Press the If you wish to see the next screen instantly, press the button. Select “8. Detailed settings” on the LCD display and press * I f air-blocking material is used, use same procedure as the button. in steps 3~6 above and change the setting for Code no.“62” to “0000”. If you wish to change the selected indoor unit, follow the step 2. <Procedure of CZ-RTC4> Stop the system before performing these steps. and buttons 1 Press and hold the...
- Page 24 (4) Setting the Flap Separately 5 P ress the timer time buttons to select the 1) T he 4-air outlet flap can be adjusted separately during desired setting data. operation. When not adjusted separately, all flaps operate Flap position in the same manner. Air discharge port Flap (adjustment for up-down airflow direction) Fig. 7-11 <Procedure of CZ-RTC2> * Setting data “ ” (refer to Fig. 7-11) Stop the system before performing these steps. Setting data Flap position during operation 1 P ress and hold the and buttons Without separate setting simultaneously for 4 seconds or longer.
- Page 25 <Procedure of CZ-RTC3 /CZ-RTC5> Stop the system before performing these steps. and buttons 1 Keep pressing the simultaneously for 4 or more seconds. YYYY The “Maintenance func” screen appears on the LCD display. or button to see each menu. 2 Press the If you wish to see the next screen instantly, press the button. or button. 5 Select the “Set data” by pressing the Select “8. Detailed settings” on the LCD display and press Select one of the Setting Data “YYYY” by pressing the the button. or button. Then press the button. YYYY The “Detailed settings” screen appears on the LCD display. Flap position or button 3 Select the “Unit no.” by pressing the for changes. Fig.
- Page 26 When the flap position is set to or and the unit is in the cooling or dry mode, the flap position is moved to and the operation is started. (refer to Fig. 7-13) NOTE The flap swings during the operation under “Setting the If you wish to change the selected indoor unit, follow the Flap Separately”. step 2. At this time, the unselected flaps are moved to the position . (refer to Fig. 7-13) <Procedure of CZ-RTC4> Stop the system before performing these steps. button. 5 Press the and buttons (The display stops blinking and remains lit, and setting is 1 Press and hold the simultaneously for 4 seconds or longer. completed.) button to set. At 2 If group control is in effect, press the If you wish to change the selected indoor unit, follow the this time, the fan at the indoor unit begins and select the step 2. address (unit No.) of the indoor unit operating. button to return to normal remote controller 6 Press the display. ” by adjusting the Temperature 3 Designate the item code “...
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Page 27: Precautions On Test Run
8. PRECAUTIONS ON TEST RUN ● Request that the customer be present at the time the test run is performed. Explain the Operating Instructions to the customer and then have the customer actually operate the system. ● Be sure to pass the manual and warranty certificate to the customer. ● Verify that the AC 208 / 230 V wiring is not connected to the terminal plate which is used to connect the inter-unit control wiring. * If AC 208 / 230 V is accidentally applied to this terminal plate, the fuse (0.4A for both indoor and outdoor units) on the inter-unit control PCB will be tripped in order to protect the PCB. Correct the wiring connections, then disconnect the 2P connectors (blue, OC, CN040) which are connected to the PCB and connect the other 2P connectors (brown, EMG, CN044). (See the figure below.) If operation is still not possible with the brown connectors connected, cut the JP040. (Be sure to turn OFF the power before performing this work.) JP040 CN044 CN040 ■ Checkpoint Checkpoint Symptom Check Remark Make sure whether indoor and outdoor units are Fall, vibration, noise correctly installed. Make sure whether gas leakage is tested. No cooling, no heating Make sure whether insulation is completed. Water leakage (Refrigerant piping and drain piping) Make sure whether drain water is running Water leakage smoothly. Make sure whether the power voltage matches Inoperative, burnout the nameplate. -
Page 28: How To Install Wireless Remote Controller Receiver
9. HOW TO INSTALL WIRELESS REMOTE <How to remove the filter> 4-Way Cassette Type (U2): CONTROLLER RECEIVER 1. Use a screwdriver to remove the bolt screw on each side for the two latches. (Be sure to reattach the two bolt screws NOT E after cleaning.) Refer to the Operating Instructions attached to the optional 2. Slide the latches of the air-intake grille in the direction of the inside to open the grille. Wireless Remote Controller Receiver. 3. The air-intake grille opens downward. 10. APPENDIX CAUTION ■ Care and Cleaning ● When cleaning the air filter, never remove the safety chain. -
Page 29: Troubleshooting
■ Troubleshooting If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or a service center. ● Indoor unit Symptom Cause Noise Sound like streaming water during Sound of refrigerant liquid flowing inside unit ● operation or after operation. Sound of drainage water through drain pipe ● Cracking noise during operation or Cracking sound due to temperature changes of parts when operation stops. Odor Discharged air is smelled during Indoor odor components, cigarette odor and cosmetic odor accumurated in operation. the air conditioner and its air is discharged. Unit inside is dusty. Consult your dealer. Dewdrop Dewdrop gets accumurated near air Indoor moisture is cooled by cool wind and accumulated by dewdrop. discharge during operation. Fog occurs during operation in Cleaning is necessary because unit inside (heat exchanger) is dirty. ● cooling mode. Consult your dealer as technical engineering is required. (Places where large amounts of oil During defrost operation ● mist exist at restaurants.) Fan is rotating for a while even though operation Fan rotating makes operation smoothly. ●... -
Page 30: Check Before Requiring Services
● Check Before Requiring Services Symptom Cause Remedy Air conditioner does not run Power failure or after power failure Press ON/OFF operation button on remote at all although power is turned controller again. Operation button is turned off. Switch on power if breaker is turned off. ● If breaker has been tripped, consult your dealer ● without turning it on. Fuse blow out. If blown out, consult your dealer. Poor cooling or heating Air intake or air discharge port of indoor Remove dust or obstruction. performance. and outdoor units is clogged with dust or obstacles. Wind speed switch is set to “Low”. Change to “High” or “Strong”. Improper temperature settings Refer to “ ■ Tips for Energy Saving”. Room is exposed to direct sunlight in cooling mode. Doors and /or windows are open. Air filter is clogged. Refer to “ ■ Care and Cleaning”. Too much heat sources in room in cooling Use minimum heat sources and in a short time. mode Too many people in room in cooling mode Reduce temperature settings or change to “High” or “Strong”. - Page 31 – NOTE –...
- Page 32 F616836 DC0515-10615 Printed in China...
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