Panasonic S-12MU1U6 Installation Instructions Manual

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Page 1 INSTALLATION INSTRUCTIONS VRF System Air Conditioner This air conditioner uses the refrigerant R410A. NOTE External diameter of service port R410A: 5/16" Model No. Indoor Units Type Indoor Unit Type S-12MU1U6 S-18MU1U6 S-24MU1U6 S-36MU1U6 4-Way Cassette (CZ-36KPU2U)** (CZ-36KPU2U)** (CZ-36KPU2U)** (CZ-36KPU2U)** 4-Way Cassette...
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 Select an installation location which is rigid and strong operating standards. As the installer or service person, it is enough to support or hold the unit, and select a location for an important part of your job to install or service the easy maintenance.
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: Table Of Contents
CONTENTS Page Page ■ IMPORTANT! ..............2 Ceiling Type (T1 Type Please Read Before Starting 3-40. Required Minimum Space for Installation and Service Check of Density Limit 3-41. Suspending the Indoor Unit 1. GENERAL ..............5 3-42. Duct for Fresh Air 3-43. Shaping the Tubing 1-1.
Page 5: General
1. GENERAL This booklet brieﬂ y 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.
Page 6 Table 1-1 (4-Way Cassette) Part Name Figure Q’ty Remarks Full-scale installation diagram Printed on container box Drain hose For securing drain hose Hose band For securing drain hose Drain insulator For drain joint For liquid tube Flare insulator For gas tube White Insulating tape For gas tube joint...
Page 7 Table 1-4 (High Static Pressure Ducted) Part Name Figure Q’ty Remarks Washer For suspending indoor unit from ceiling For suspending indoor unit from ceiling For gas tube Flare insulator For liquid tube Drain socket For drain pipe connection Table 1-5 (Ceiling) Part Name Figure Q’ty...
Page 8 Table 1-8 (Slim Low Static Ducted) Part Name Figure Q’ty Remarks Washer For suspension ﬁ tting Flare insulation 2 set For gas / liquid tube connection Insulation tape For gas / liquid tube / ﬂ are nut connection Vinyl tie For ﬂ...
Page 9: Selecting The Installation Site
2. SELECTING THE INSTALLATION SITE Slim Low Static Ducted Type Low Silhouette Ducted (High Static Pressure) Type 4-Way Cassette (60 × 60) Type 2-1. Indoor Unit AVOID: 3 ft. 3 ft. 10 in. 10 in. ● areas where leakage of ﬂ ammable gas may be expected. ●...
Page 10: How To Install The Indoor Unit
3. HOW TO INSTALL THE INDOOR UNIT Note: For DC Fan Tap Change Procedure for 4-Way Cassette, see page 16. ■ 4-Way Cassette Type (U1 Type) Hole-in-anchor Hole-in-plug Concrete Inser t 3-1. Preparation for Suspending This unit uses a drain pump. Use a level gauge to check that the unit is level.
Page 11 (2) The length of suspension bolts must be appropriate Suspension bolt for a distance between the bottom of the bolt and the Suspension lug Nuts and washers bottom of the unit of more than 19/32" as shown in (use for upper and lower) Fig.
Page 12 11-3/16" or less (as short as possible) 33-15/32" or less CAUTION 0 – 45° ● In cases where it is necessary to raise the height of the drain piping, the drain piping can be raised to a maximum height of 33-15/32" above the * Length of supplied drain hose = 9-27/32"...
Page 13 3-6. How to Install the Ceiling Panel must be within the range of 15/32" – 43/64" (Fig. 3-13) If not within this range, malfunction or other trouble may occur. 3-6-1. Before Installing the Ceiling Panel Checking the unit position (1) Check that the ceiling hole is within this range: Main unit 33-55/64 ×...
Page 14 3-6-2. Installing the Ceiling Panel Inter-unit control wiring After completing the wiring process, install the supplied wiring cover before installing the panel. It is not possible to install the wiring cover after installing the panel. The power must be turned ON in order to change the ﬂ ap angle.
Page 15 3-6-3. Wiring the Ceiling Panel (Direction that the unit faces has been changed to facilitate explanation.) (1) Open the cover of the electrical component box. Electrical component (2) Connect the 7P wiring connector (red) from the ceiling box cover panel to the connector in the unit electrical component box.
Page 16 3-6-5. Checking After Installation ● Check that there are no gaps between the unit and the ceiling panel, or between the ceiling panel and the ceiling surface. Gaps may cause water leakage and condensation. ● Check that the wiring is securely connected. If it is not securely connected, the auto ﬂ...
Page 17: Preparation For Suspending
■ 4-Way Cassette 60 × 60 Type (Y1 Type) Hole-in-anchor 3-8. Preparation for Suspending Hole-in-plug Concrete Insert This unit uses a drain pump. Use a level gauge to check that the unit is level. 3-9. Suspending the Indoor Unit (1) Fix the suspension bolts securely in the ceiling using the method shown in the diagrams, by attaching them Suspension bolt (M10 or 3/8") Fig.
Page 18: Installing The Drain Piping
3-11. Installing the Drain Piping (1) Prepare standard hard PVC pipe (O.D. 1-1/32") for the Twist tie (4 ties, supplied) drain and use the supplied hose band to prevent water Drain hose Hard PVC pipe leaks. (Fig. 3-33) Position to insulation (equivalent to Drain port...
Page 19: Checking The Drainage
Water drain 3-12. Checking the Drainage After 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 (R, S terminals) inside the electrical component box.
Page 20 3-13-2. Installing the Ceiling Panel The power must be turned ON in order to change the ﬂ ap Temporary latches angle. (Do not attempt to move the ﬂ ap by hand. Doing so may damage the ﬂ ap.) Temporary latch (1) Hang the temporary latches on the inside of the ceiling panel to the receptacle on the unit to Fig.
Page 21 3-13-4. How to Attach the Corner & Air-Intake Grille Attaching the corner cover and air-intake grille A. Attaching the corner cover (1) Check that the safety cord from the corner cover is fastened to the ceiling panel pin, as shown in the ﬁ...
Page 22: 1-Way Cassette Type (D1 Type)
■ 1-Way Cassette Type (D1 Type) 29-59/64 (Panel outer dimensions) 28-47/64 (Ceiling opening dimension) 3-14. Suspending the Indoor Unit (1-27/64) 1-27/64 25-63/64 (Suspension bolt pitch) (1) Follow the diagrams to make the holes in the ceiling. (Figs. 3-52 and 3-53) (2) Depending on the ceiling type: ●...
Page 23: Placing The Unit Inside The Ceiling
3-15. Placing the Unit Inside the Ceiling Full-scale installation diagram Be sure to use a level gauge and conﬁ rm that the unit is CAUTION Suspension level. If it is not level, water leakage may occur. (1) Use the supplied M5 or 3/16" screws (4) to attach the full-scale installation diagram to the indoor unit over 19/32 in.
Page 24: Installing The Drain Piping
CAUTION 2-1/8 2-1/8 ● The indoor unit includes a drain pump. Be sure to use a level gauge and verify that the unit is level. Suspension bolts ● Before inserting the ceiling material, complete as much of the drain piping work and refrigerant tubing work as Tubing side possible.
Page 25: Checking The Drainage
CAUTION ● Do not install an air bleeder as this may cause water to Air bleed valve spray from the drain pipe outlet. (Fig. 3-64) ● In cases where it is necessary to raise the height of the drain piping, the drain piping can be raised to a maximum height of 33-15/32"...
Page 26: Electrical Power Wiring
3-18. Electrical Power Wiring Refrigerant tubing joint Drain pipe connection (gas tube) (Be sure to connect the (1) Wiring connections supplied flexible hose.) Refrigerant tubing joint The power inlet is on the side of the indoor unit where the (liquid tube) refrigerant tubing is located.
Page 27 Removing the intake grille Screw Slide the intake grille hooks (2 Screw locations) in the direction of the arrow to open the intake grille. Hook (Fig. 3-72) When the intake grille is open, press a ﬂ athead screwdriver against the rear tabs (2 locations) and pull out Fig.
Page 28 (5) Align the installation holes on the panel with the bolt holes on the unit. Indoor unit (6) Insert the supplied washer head bolts into the 4 panel installation holes, and tighten until the panel is securely fastened against the unit. (Fig. 3-77) (7) Verify that the panel is securely fastened against the unit.
Page 29 3-19-3. Wiring the ceiling panel (1) Loosen the 2 screws on the electrical component box lid, and remove the lid. (Fig. 3-80) (2) Fasten the wiring connector (7P, red) which comes out from the ceiling panel using the lead wire clamps (2 locations) on the unit.
Page 30: Required Minimum Space For Installation And Service
■ Low Silhouette Ducted Type (F1 Type) 3-20. Required Minimum Space for Installation and Service A (Suspension bolt pitch) Electrical component box ● This air conditioner is usually installed above the ceiling so that the indoor unit and ducts are not visible. Only the air intake and air Inspection access Min.
Page 31: Suspending The Indoor Unit
3-21. Suspending the Indoor Unit Hole-in-anchor Hole-in-plug Concrete Inser t Depending on the ceiling type: • Insert suspension bolts as shown in Fig. 3-86 • Use existing ceiling supports or construct a suitable support as shown in Fig. 3-87. It is important that you use extreme care Suspension bolt (M10 or 3/8") (field supply) in supporting the indoor unit inside the...
Page 32: Installing The Drain Piping
3-22. Installing the Drain Piping (1) Prepare standard hard PVC pipe (O.D. 1-1/4") for the drain Align the hose band with end of the hose, and tighten so that it and use the supplied hose band to prevent water leaks. does not contact the bead.
Page 33: Increasing The Fan Speed
Be careful since the fan will start when you short Power supply outlet the pin on the indoor control board. CAUTION Inter-unit control wiring (4) When the check of drainage is complete, open the check pin (CHK) and remount the insulator and drain cap onto the drain inspection port. 3-24.
Page 34: When Installing The Indoor Unit
3-25. When Installing the Indoor Unit Conﬁ rm that the indoor unit should be installed in a horizontal position. Use the level gauge or vinyl tube and check every four corner of the unit is in horizontal. If the air outlet duct ﬂ ange is positioned with downward gradient, there is in danger of water splash or drainage.
Page 35: Slim Low Static Ducted Type
■ Slim Low Static Ducted Type (M1 Type) 32-7/16" (Suspension bolt pitch) 3-27. Required Minimum Space for Installation and Electrical Service component box min. ● This air conditioner is usually installed above the 7-7/8" Inspection ceiling so that the indoor unit and ducts are not visible. access Only the air intake and air outlet ports are visible from 17-23/32"...
Page 36: Preparations Before Installation
3-28. Preparations Before Installation (Inspection access) (1) Conﬁ rm the positional relationship between the unit and suspension bolts. (Refer to the diagram.) • Install the inspection opening on the control box side where maintenance and inspection of the control box are easy. The drain pump can only be inspected through the bottom of the unit.
Page 37: Installing The Duct
3-30. Installing the Duct Connect the duct supplied in the ﬁ eld. Air inlet side ● Attach the duct and intake-side ﬂ ange (ﬁ eld supply). ● Connect the ﬂ ange to the main unit with 10 - Ø 1/8" (Hole) screws. ●...
Page 38: Suspending The Indoor Unit
3-31. Suspending the Indoor Unit Depending on the ceiling type: • Insert suspension bolts as shown in the diagram Hole-in-anchor Hole-in-plug Concrete Insert • Use existing ceiling supports or construct a suitable support as shown in the diagram. It is important that you use extreme care in supporting the WARNING indoor unit inside the ceiling.
Page 39: Installing The Drain Piping
3-32. Installing the Drain Piping Unit: in. Twist tie (1) Prepare standard hard PVC pipe (O.D. 1-1/32") for the (4 ties, supplied) Hard PVC pipe Drain hose drain and use the supplied hose band to prevent water Position to (equivalent to insulation Drain port fasten hose...
Page 40: Increasing The Fan Speed
Wiring port Be careful since the fan will start when you short the pin CAUTION on the indoor control board. Water inlet (4) When the check of drainage is complete, open the check pin (CHK) and remount the insulator and drain cap onto the drain inspection port. Eyelet cap 3-34.
Page 41: High Static Pressure Ducted Type
■ High Static Pressure Ducted Type (E1 Type) Min. 23-5/8 19-11/16 (Space for service) 3-35. Required Minimum Space for Installation and 5-1/8 11-27/64 Service ● This air conditioner is usually installed above the ceiling so that the indoor unit and ducts are not visible. Suspension bolt pitch Only the air intake and air outlet ports are visible from...
Page 42: Suspending The Indoor Unit
3-36. Suspending the Indoor Unit Hole-in-anchor Hole-in-plug Concrete Insert Depending on the ceiling type: ● Insert suspension bolts as shown in Fig. 3-120 ● Use existing ceiling supports or construct a suitable support as shown in Fig. 3-121. Suspension bolt (M10 or 3/8") It is important that you use extreme care (field supply) in supporting the indoor unit inside the...
Page 43: Installing The Drain Piping
3-37. Installing the Drain Piping Sealing tape (1) Prepare standard hard PVC pipe (O.D. 1-1/4") for the drain and use the supplied drain socket to prevent water leaks. The PVC pipe must be purchased separately. When doing this, apply adhesive for the PVC pipe at the connection point.
Page 44: Ceiling Type (T1 Type)
■ Ceiling Type (T1 Type) 3-40. Required Minimum Space for Installation and Service (1) Dimensions of suspension bolt pitch and unit Table 3-6 Unit: in. Dimension Air intake Type 12, 18 33-21/32 35-53/64 8-17/64 44-19/64 46-29/64 8-17/64 Ceiling side 1-5/64 1-5/64 Air outlet (Suspension bolt pitch)
Page 45: Suspending The Indoor Unit
(4) Wall and ceiling side opening position Figure shows view from front Figure shows view from top Wall Ceiling ø3-15/16 ceiling opening ø3-15/16 wall side opening 3-35/64 5-5/16 ø3-15/16 wall side opening ø3-15/16 ceiling opening 4-59/64 (for left-side drain hose) * If the optional drain up kit is installed, create a ø3-15/16"...
Page 46 (5) Before suspending the indoor unit, remove the 2 or 3 screws on the latch of the air-intake grilles, open the grilles, and remove them by Slide toward pushing the claws of the hinges as shown in Fig. 3-135. Then remove front side both side panels sliding them along the unit toward the front after removing the 2 attachment screws.
Page 47: Duct For Fresh Air
3-42. Duct for Fresh Air Rear outlet port There is a duct connection port (knock-out hole) at the right- Inter-unit control wiring rear of the top panel of the indoor unit for drawing in fresh air. (ø1-3/16 " , knock-out, use rubber grommet) If it is necessary to draw in fresh air, remove the cover by Outside air intake duct connection port opening the hole and connecting the duct to the indoor unit...
Page 48 ● Never allow traps to occur in the course of the piping. Twist tie (4 ties) ● Insulate any piping inside the room to prevent dripping. Hard PVC pipe Drain hose Position to (equivalent to Unit drain port ● insulation After the drain piping, pour water into the drain pan to fasten hose VP-20)
Page 49: Wall Mounted Type (K1 Type)
■ Wall Mounted Type (K1 Type) 3-45. Removing the Rear Panel from the Unit (1) Remove the set screws used to fasten the rear panel to the indoor unit during transportation. Screws used during (2) Press up on the frame at the 2 locations shown by the arrows transportation in the ﬁ...
Page 50: Installing The Rear Panel Onto The Wall
3-47. Installing the Rear Panel onto the Wall Conﬁ rm that the wall is strong enough to support the unit. See either Item a) or b) below depending on the wall type. a) If the Wall is Wooden (1) Attach the rear panel to the wall with the 10 screws provided. Fig.
Page 51: Preparing The Tubing
3-49. Preparing the Tubing Frame (1) Arrangement of tubing by directions a) Right or left tubing Right tubing The corner of the right or left frame should be cut with a outlet hack saw or similar. (Fig. 3-162) b) Right-rear or left-rear tubing When left and right side tubing In this case, the corners of the frame do not need to be cut.
Page 52: Shaping The Tubing
3-50. Shaping the Tubing Rear panel tab Insulating Right-rear tubing tape Refrigerant (1) Shape the refrigerant tubing so that it can easily go into the tubing hole. (Fig. 3-166) (2) After performing a leak test, wrap both the refrigerant tubing and drain hose together with insulating tape.
Page 53: When Using Wireless Remote Controller Instead Of Wired Remote Controller
3-52. When Using Wireless Remote Controller Instead of Wired Remote Controller When the wireless remote controller is to be used, slide the switch on the indoor unit control PCB. ● If this setting is not made, an alarm will occur. (The operation lamp on the display blinks.) ●...
Page 54: External Electronic Expansion Valve Kit (Cz-P56Svk1U)
3-53. External Electronic Expansion Valve Kit (CZ-P56SVK1U) Precautions in this manual are given in the form of “Warnings” or “Cautions.” Both types of precautions contain important information related to your safety, the safety of users, and the correct operation, installation, or maintenance of the air conditioning system.
Page 55 3. Cutting and Flaring of Liquid Tube After determining the position for installation, cut the liquid tube and ﬂ are the connecting portion. (Pay attention to the notes below when ﬂ aring the tubes.) NOTE ● After cutting the tube, deburr and ﬁ nish the end face smoothly and correctly. ●...
Page 56 5. Flare Insulation of Tubing After completing a leakage test, apply heat insulation. (Fig. 3-191) * Use the ﬂ are insulator provided with the product. Indoor side Outdoor side Insulating tape Insulating tape Flare insulator Flare insulator Clamps (small) Clamps (small) Be careful not to allow a gap to occur between the thermal insulation of the tubing and the...
Page 57 7. Wiring Procedure Be sure to turn the power off at the mains before removing or connecting connectors to avoid electric shock hazard. WARNING Connection of External Electronic Expansion Valve with Extension Cord (1) Turn the power off. (2) Turn the power on. (3) Wait 1 minute after the power is on and then turn the power off again at the mains.
Page 58: Concealed Floor Standing Type (R1 Type)
■ Floor Standing Type (P1 Type) Concealed Floor Standing Type (R1 Type) Horizontal view Vertical view 3-54. Required Minimum Space for Installation and Service min. min. 3-15/16" 3-15/16" min. 3.3 ft. Install the unit where cooled or heated air from the unit can circulate well in the room.
Page 59 Concealed Floor Standing Type (R1 Type) 4-Ø15/32" holes (for fastening the indoor unit to the ﬂ oor with screws) Air ﬁ lter Refrigerant connection outlet (liquid tube) Refrigerant connection outlet (gas tube) Level adjusting bolt Drain outlet (20 A) Flange for air-outlet duct Unit: in.
Page 60: Removing And Attaching The Front Panel (Floor Standing Type)
3-56. Removing and Attaching the Front Panel (Floor Standing Type) NOTE A dew-prevention heater is secured behind the front panel. When removing or attaching the panel, take care not to damage the lead wire to the heater. How to remove the front panel Side panel (1) Remove the 2 screws at the lower part of the front Front panel...
Page 61: Installing The Drain Piping
Insulate both gas and liquid Insulating tape (black) Flare insulator tubes. CAUTION Insulating tape (white) ● To insulate tubes (1) Wrap the ﬂ are nuts with the supplied white insulating tape. (2) Wrap the ﬂ are nuts with the supplied ﬂ are insulator. (3) Fill the clearance between the union insulator and ﬂ...
Page 62: Supplement On Drain Piping
■ SUPPLEMENT ON DRAIN PIPING 1. Drain hose installation Hose band Drain port (supplied) Hard PVC socket (VP25) (Drainage check section Soft PVC socket on drain port, transparent, Hard PVC pipe Drain hose ABS resin) (VP25 field supplied) (supplied) Indoor unit Bead Do not use adhesive here.
Page 63: Electrical Wiring
4. ELECTRICAL WIRING 4-1. General Precautions on Wiring (1) Before wiring, conﬁ rm the rated voltage of the unit as (7) Regulations on wire diameters differ from locality to shown on its nameplate, then carry out the wiring locality. For ﬁ eld wiring rules, please refer to your closely following the wiring diagram.
Page 64: Wiring System Diagram
4-3. Wiring System Diagram ex.) W-3WAY ECO-i 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...
Page 65 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 66 Loose wiring may cause the terminal to overheat or result CAUTION in unit malfunction. A ﬁ re 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” and fasten the wire securely with the ﬁ...
Page 67: Important Note When Wiring For Common Type
4-4. Important Note When Wiring for Common Type U1 Type Connect the wires referring to the diagram. Note that the control wirings (Low voltages) shall be segregated from the power supply wires (High voltage) as follows: 1. Connect the Inter-unit control wiring to U1/U2 terminals and the remote control wire to R1/R2.
Page 68 Important Note When Wiring for Common Type (Continued) E1 Type T1 Type Remote control wiring and Inter-unit control wiring (ﬁ eld supplied) Clamping Remote control wiring clip (ﬁ eld supplied) Clamping clip Conduit (ﬁ eld supplied) Earth screw Power wiring Conduit (ﬁ...
Page 69 Important Note When Wiring for Common Type (Continued) K1 Type Model : S-07MK1U6 Clamping Connection for Solenoid S-09MK1U6 strap Valve Kit (for 3WAY) S-12MK1U6 Power wiring (ﬁ eld supplied) Remote control wiring Conduit and Inter-unit control (ﬁ eld supplied) wiring (ﬁ eld supplied) K1 Type Connection for Solenoid Clamping...
Page 70: Important Note When Wiring For Y1 Type
4-5. Important Note When Wiring for Y1 Type Connect the wires referring to the diagram. Y1 Type Note that the control wirings (Low Voltages) shall be segregated from the power supply wires (High Voltage) Connection for Solenoid as follows: Valve Kit (for 3WAY) Remote control wiring 1.
Page 71: How To Process Tubing
5. HOW TO PROCESS TUBING Deburring The liquid tubing side is connected by a ﬂ are 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 ﬂ...
Page 72: Connecting Tubing Between Indoor And Outdoor Units
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 (2) Be sure to apply refrigerant lubricant to the matching lubricant surfaces of the ﬂ are and union before connecting them together.
Page 73: Insulating The Refrigerant Tubing
5-3. Insulating the Refrigerant Tubing Two tubes arranged together Tubing Insulation Liquid tubing Gas tubing ● Thermal insulation must be applied to all unit tubing, including the distribution joint (purchased separately). (Fig. 5-7) * For gas tubing, the insulation material must be heat Insulation resistant to 248°F or above.
Page 74: 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 overﬂ owing the drain pan, keep the drain hose separate from the refrigerant tubing.
Page 75: Appendix
6. APPENDIX ■ NAME OF PARTS 4-Way Cassette (U1) 4-Way Cassette 60 × 60 (Y1) Water drain Water drain Ceiling panel (optional) Ceiling panel (optional) Air outlet (4 locations) Air outlet (4 locations) Air intake grille (air intake) Air intake grille (air intake) 1-Way Cassette (D1) Low Silhouette Ducted (F1) Flexible duct (optional)
Page 76: Care And Cleaning
■ Care and Cleaning 1. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning. WARNING 2. Do not pour water on the indoor unit to clean it. This will damage the internal components and cause an electric shock hazard.
Page 77 ■ Care and Cleaning (continued) How to remove the ﬁ lter 4-Way Cassette (U1): 1. Use a screwdriver to remove the bolt screw on each side for the two latches. (Be 4-way Cassette 60 × 60 (Y1): sure to reattach the two bolt screws after cleaning.) 2.
Page 78 ■ Care and Cleaning (continued) How to remove the ﬁ lter (continued) Ceiling (T1): 1. Take hold of the ﬁ nger-hold on the air intake grille and press it to the rear, and the grille will open downward. 2. Take hold of the ﬁ nger-hold on the air ﬁ lter, pull it toward you. Air ﬁ...
Page 79 ■ Care and Cleaning (continued) How to remove the filter (continued) Floor Standing (P1): Remove the screw at the bottom left of the front panel using a Phillips head screwdriver. Concealed Floor Standing (R1): (Be sure to replace the screw when cleaning is ﬁ nished.) Remove the ﬁ...
Page 80 1. Certain metal edges and the condenser ﬁ ns are sharp and may cause injury if handled improperly; special care should be taken when you clean CAUTION these parts. 2. Periodically check the outdoor unit to see if the air outlet or air intake is clogged with dirt or soot.
Page 81: Troubleshooting
■ Troubleshooting If your air conditioner does not work properly, ﬁ rst check the following points before requesting service. If it still does not work properly, contact your dealer or a service center. Trouble Possible Cause Remedy Air conditioner does not run at 1.
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Panasonic S-12MU1U6 Installation Instructions Manual

Important

General

Selecting the Installation Site

How to Install the Indoor Unit

Electrical Wiring

How to Process Tubing

Appendix

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