Page 2 - Important; CAUTION
Please Read Before Starting This air conditioning system meets strict safety andoperating standards. As the installer or service person, itis an important part of your job to install or service thesystem so it operates safely and efficiently. For safe installation and trouble-free operation, youmust...
Page 3 - CONTENTS; IMPORTANT; Page; HOW TO INSTALL THE WIRED REMOTE CONTROLLER
Page CONTENTS IMPORTANT Please Read Before Starting 1. GENERAL ................................................................... 4 1-1. Tools Required for Installation (Not Supplied) 1-2. Accessories Supplied with Unit 1-3. Type of Copper Tube and Insulation Material 1-4. Additional Materials Requ...
Page 4 - HOW TO INSTALL THE WEEKLY TIMER
Page 8. HOW TO INSTALL THE WEEKLY TIMER (OPTIONAL PART) ................................................... 65 8-1. Mounting Dimensions for Continuous Installation 8-2. When Using a Wall Box for Flush Mounting 8-3. Wiring Diagram 8-4. Test Run Setting 8-5. Memory Back Up Function for Power Failure C...
Page 7 - Black
6 S4359146 Table 1-3 TH (Ceiling-Mounted) Part Name Figure Q’ty Remarks Special washer 4 Drain insulator 1 Flare insulator 1 Set Drain hose adaptor 1 Drain hose clamp 4 Insulating tape 2 1 Vinyl clamp 2 Full-scale installation 1 diagram Sealing putty 1 Drain hose 1 Tube connector 1 For temporarily s...
Page 11 - SELECTING THE INSTALLATION SITE; Indoor Unit
10 S4359146 Ceiling-Mounted Type 2. SELECTING THE INSTALLATION SITE Indoor Unit AVOID: ● areas where leakage of flammable gas may be expected. ● places where large amounts of oil mist exist. ● direct sunlight. ● locations near inverter lamps which may affect performance of the unit. ● locations near...
Page 13 - Air discharge; Air Discharge Chamber for Top Discharge
12 S4359146 Air discharge 0426_C_I Recommended outer dimensions of wind shield (field supply) 0936_C_I 3 - ø1-9/16" hole 6 - ø15/64" hole 9-27/32" 21-5/8" 15/16" 5-3/16" 22-7/16" 1/2" 23-15/32" 21-13/16" 5-5/32" 9-27/32" 9-27/32" 1-7/32" 21-13/...
Page 14 - Precautions When Installing in Heavy Snow; Duct; and Refrigerant Tubing Space for Installation
13 S4359146 9 9 9 9 9 SC 1 1 1 1 1 X 8 8 8 8 8 WT 7 7 7 7 7 RC (WL) 5 5 5 5 5 C 4 4 4 4 4 U 3 3 3 3 3 T 2 2 2 2 2 K 6 6 6 6 6 RC (WD) 0937_C_I Without snow-proof ducting(Low platform) Snow-proofducting(High platform) In regions with snow fall, the outdoor unit should beprovided with a platform and s...
Page 15 - Type; HOW TO INSTALL THE INDOOR UNIT; Length
1 1 1 1 1 X 14 S4359146 Fig. 3-2 Fig. 3-1 Hole-in-anchorHole-in-plug Concrete Insert Suspension bolt (M10 or 3/8")(field supply) 0038_T_I Type Length 3. HOW TO INSTALL THE INDOOR UNIT ■ 4-Way Air Discharge Semi-Concealed Type(XH Type) 3-1. Suspending the Indoor Unit This unit uses a drain pump. ...
Page 17 - Air bleeder
1 1 1 1 1 X 16 S4359146 N O T E CAUTION CAUTION Fig. 3-11 Support pieces 0050_X_I Fig. 3-10 Upward gradient 0049_X_I Fig. 3-9 Fig. 3-8 Air bleeder 0047_X_I 0197_X_I Drain insulator (supplied) Fig. 3-7 Drain hose(supplied) Packing(supplied) Transparent part for checking drainage Hose band(supplied) D...
Page 19 - Safety string
1 1 1 1 1 X 18 S4359146 Fig. 3-13 Fig. 3-14 Ceiling panel Air intake grille Latch 0149_X_I Screw Safety string Air filter 0150_X_I 45° ■ Ceiling Panel Never touch or attempt to move the air direction louver by hand or you may damage the unit. Instead, use the remote control unit if you want to chang...
Page 23 - Wall fixture
2 2 2 2 2 K 22 S4359146 Fig. 3-21 Fig. 3-20 Hole should be made at a slight downward slant to the outdoor side. N O T E Indoorside Outdoorside 0066_T_I Fig. 3-19 Tape F u l l - s c a l e i n sta l l a t i o n d i a g r am 0940_T_I Cut at slight angle PVC pipe (locally purchased) 0941_T_I Plastic cov...
Page 26 - Remove the clamp for the wiring connector.; N O T E; Plastic cover
2 2 2 2 2 K 25 S4359146 3-13. Removing the Casing to Install the Indoor Unit How to Remove the Casing (1) Remove the plastic cover. (Fig. 3-31) (2) Remove the clamp for the wiring connector. (Fig. 3-32) (3) Disconnect the wiring connector. (Fig. 3-33) (4) Set the flap in the horizontal position. (Fi...
Page 27 - Arrangement for Right-rear Tubing
2 2 2 2 2 K 26 S4359146 3-14. Preparing the Indoor Side Tubing Tubing can be extended in 4 directions as shown in Fig. 3-35. Arrangement for Left Tubing (a) Cut out the left tubing outlet. (Fig. 3-36) Arrangement for Right Tubing (a) Cut out the right tubing outlet using a hacksaw. (Fig. 3-37) Arran...
Page 30 - Refrigerant tubing
2 2 2 2 2 K 29 S4359146 3-17. Shaping the Tubing (1) Shape the refrigerant tubing so that it can easily go into the hole. (Fig. 3-47) (2) Push the wiring, refrigerant tubing and drain hose through the hole in the wall. Adjust the indoor unit so it is securely seated on the wall fixture. (3) Carefull...
Page 31 - Do not supply power to the; Slant
2 2 2 2 2 K 30 S4359146 3-18. Installing the Drain Hose (a) The drain hose should be slanted downward on the outdoor side. (Fig. 3-53) (b) Never form a trap in the course of the hose. (c) If the drain hose will run in the room, insulate* the hose so that chilled condensation will not damage furnitur...
Page 33 - Slide
3 3 3 3 3 T 32 S4359146 (5) Before suspending the indoor unit, remove the 2 screws on the latch of the air-intake grilles, open the grilles, and remove them by pushing the claws of the hinges as shown in Fig. 3-59. Then remove both side panels sliding them along the unit toward the front after remov...
Page 34 - Cut at slight angle
3 3 3 3 3 T 33 S4359146 (b) Lift the indoor unit, and place it on the washers through the notches, so as to fix it in place. (Fig. 3-64) (c) Tighten the two hexagonal nuts on each suspension bolt to suspend the indoor unit as shown in Fig. 3-65. N O T E A ceiling surface is not always level. Please ...
Page 35 - Good
3 3 3 3 3 T 34 S4359146 Fig. 3-68 3-20. Duct for Fresh Air There is a duct connection port (knock-out hole) at the right-rear on the Panel Top of the indoor unit for drawing in fresh air. If it is necessary to draw in fresh air, remove the cover by knocking out and connect the duct to the indoor uni...
Page 36 - Dimension
4 4 4 4 4 U S4359146 35 ■ Concealed-Duct Type ( UH Type) 3-22. Required Minimum Space for Installation and Service ● This air conditioner is usually installed above theceiling so that the indoor unit and ducts are notvisible. Only the air intake and air outlet ports arevisible from below. ● The mini...
Page 38 - Air outlet duct
4 4 4 4 4 U S4359146 37 ● Fig. 3-78 shows an example of installation. 3-24. Installing the Drain Piping (1) Prepare a standard hard PVC pipe for the drain and use the supplied hose band to prevent water leaks. The PVC pipe must be purchased separately. When doing this, leave a gap between the drain ...
Page 40 - Indoor Fan Performance; How to read the diagram; External Static Pressure
4 4 4 4 4 U S4359146 39 3-26. Increasing the Fan Speed If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure: (1) Remove 4 s...
Page 41 - HOW TO INSTALL THE OUTDOOR UNIT; Transportation
40 S4359146 4. HOW TO INSTALL THE OUTDOOR UNIT 4-1. Removing the Protective Spacer for Transportation Remove the packing skid from the bottom of unit and then remove the plastic spacer used to secure the compressor during transportation. (Fig. 4-1) Place the unit on a level concrete pad, block or eq...
Page 43 - CH Type; KH Type
42 S4359146 5-3. Wiring System Diagrams (1) Basic wiring diagram for standard control 1 2 U1 U2 1 2 1 2 1 2 1 2 G G L1 L2 G Indoor Unit Inter-unitpower wiringSingle phase230/208V Inter-unitcontrol wiring(Low voltage) Remote controller Outdoor Unit Ground Ground (Option) B D A 2085_M_I Power supply S...
Page 46 - HOW TO INSTALL THE WIRED REMOTE CONTROLLER; RC; Spacer; Mounting dimensions for continuous installation
45 S4359146 6. HOW TO INSTALL THE WIRED REMOTE CONTROLLER (OPTIONAL PART) Fig. 6-2 6 6 6 6 6 RC (WD) 1987_C_I 3-21/32 in. or more Spacer Wall 3/32 in. (amount offset from JIS box) Hole for routing remote control cable 3-17/32 in. or more 4-29/32 in. or more 4-29/32 in. or more (from wall) (during co...
Page 48 - Wiring procedure
47 S4359146 6-3. Basic Wiring Diagram Install wiring correctly (incorrect wiring will damage the equipment). CAUTION ● Use shielded wires for inter-unit control wiring and ground the shield on both sides. (Fig. 6-5) Otherwise misoperation because of noise may occur. ● Wiring procedure Install the wi...
Page 50 - buttons for at least
49 S4359146 6-5. Wiring System Diagram for Multiple Remote Control ■ When Installing Multiple Remote Controllers This multiple remote controller system is used foroperating the unit(s) at different positions. (A maximumof 2 remote controllers can be installed.) ● Setting method To execute this contr...
Page 51 - Possible Cause of Malfunction; RCU
50 S4359146 6-7. Explanation of Alarm Messages 6 6 6 6 6 RC (WD) When using group control, main indoor unit address setting is duplicated. (For single heat pump type.) Error in Auto. address setting. (No. or capacity of judged indoor unit is small.) Error in Auto. address setting. (No. or capacity o...
Page 52 - Possible cause of Malfunction; : Refrigerant Circuit
51 S4359146 6 6 6 6 6 RC (WD) Thermistorfailure Fault withcomp. and itscircuit Possible Cause of Malfunction Indoor thermistor is either openor damaged. Outdoor thermistor is eitheropen or damaged. Protective device for comp. isactivated. EEPROM (ICB of PCB) failure Model setting of indoor unit is n...
Page 53 - HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER; -1. Wireless Remote Controller Installation; Mounting cradle
7 7 7 7 7 RC (WL) 52 S4359146 7. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER (OPTIONAL PART) Important When using this air conditioner (ECO multi system air conditioner) with the wireless remote controller it may sometimes be impossible to change the operation modes while other indoor unit is runn...
Page 54 - Sensor button; ADR
7 7 7 7 7 RC (WL) 53 S4359146 7-2. Room Temperature Sensor Setting The room temperature sensors are built into the indoorunit and the wireless remote controller. Either of theseroom temperature sensors can operate.The system is shipped from the factory set to theindoor unit sensor. To switch to the ...
Page 60 - Reinstall the cover plate.; Connector
7 7 7 7 7 RC (WL) 59 S4359146 ● When using the signal receiving unit on a wall withthe front exposed, choose a wall surface that thesignal receiving unit can be mounted on. (1) Insert a flat tip (minus) screwdriver into the slot onthe lower side of the signal receiving unit and pryoff the back case ...
Page 61 - Join the 2 wires as shown and crimp-connect
7 7 7 7 7 RC (WL) 60 S4359146 0 0 0 0 0 WT 7-13. Electrical Wiring Make correct wiring without any mistakes (incorrect wiring will damage the equipment). ● Recommended wire diameter and allowable length for signal receiving unit wiring and its branch wiring: AWG #18, MAX 1,300 ft. 1. Peel away 9/16 ...
Page 62 - OPERATION lamp
7 7 7 7 7 RC (WL) 61 S4359146 0 0 0 0 0 WT 7-15. Misoperation Alarm Indicators A blinking lamp for other than the signal receiving unit filter shows that a problem has occurred in the unit so make an inspection. (Refer to servicing information in the service manual, etc.) Also, if wired remote contr...
Page 63 - Shielded wire
7 7 7 7 7 RC (WL) 62 S4359146 7-16. Basic Wiring Diagram Install wiring correctly (incorrect wiring will damage the equipment). CAUTION ● Use shielded wires for inter-unit control wiring and ground the shield on both sides. (Fig. 7-25) Otherwise misoperation because of noise may occur. ● Wiring proc...
Page 65 - Connection wiring
7 7 7 7 7 RC (WL) 64 S4359146 7-18. Wiring System Diagram for Multiple ■ When Installing Multiple This multiple system is used for operating the unit(s) at different positions. (A maximum of 2 signal receiving unit can be installed.) ● Setting method To execute this control, make the setting accordi...
Page 66 - HOW TO INSTALL THE WEEKLY TIMER; -1. Mounting Dimensions for Continuous Installation; For vertical continuous installation, the space; -2. When Using a Wall Box for Flush Mounting; WT
7 7 7 7 7 RC (WL) 65 S4359146 8. HOW TO INSTALL THE WEEKLY TIMER (OPTIONAL PART) Do not supply power to theunit or try to operate it untilthe tubing and wiring to theoutdoor unit is completed. 8-1. Mounting Dimensions for Continuous Installation ● For vertical continuous installation, the space betw...
Page 67 - Timer terminal
7 7 7 7 7 RC (WL) 66 S4359146 8-4. Test Run Setting ● After installation, check the output state of the weekly timer with the “FORCED OPR.” switch (OFF to ON) located on the rear side of its PCB. After confirming normal operation, turn the “FORCED OPR.” switch back to OFF without fail. 8-5. Memory B...
Page 68 - SC; HOW TO INSTALL THE SYSTEM CONTROLLER; Back case
9 9 9 9 9 SC 67 S4359146 9. HOW TO INSTALL THE SYSTEM CONTROLLER (OPTIONAL PART) Fig. 9-1 2041_C_I Systemcontroller Switch box(no cover) M4 × 1-3/16 in. Screws (2) Flat-topScrew Back case Gap Coin 2042_M_I Gap Fig. 9-2 Do not supply power to theunit or try to operate it untilthe tubing and wiring to...
Page 70 - ON; Main/sub selection switch; OFF
9 9 9 9 9 SC 69 S4359146 9-3. Address Switch Setting 2046_M_I 1 ON Main/sub selection switch OFF: System controller operates as main controller.ON: System controller operates as sub-controller. SW1 ALL/ZONE mode selection switch ALL mode:All indoor units can be controlled by system controllerZONE 1,...
Page 71 - Weekly timer input switches.
9 9 9 9 9 SC 70 S4359146 2047_M_I 1 ON Weekly timer input switches. System controller operation can be set when weekly timer activates (ON/OFF). SW2 Incase of Remote control mode, use 1 or 2 . In case of ZONE 1, 2, 3, 4 mode, ALL, all indoor units means one of ZONE 1, 2, 3, 4.* 1 : 1 (Central contro...
Page 73 - Refer to page 73; NOTE; assigned in ascending numerical order.; Central address
9 9 9 9 9 SC 72 S4359146 9-5. How to Perform Zone Registration To operate the system controller properly, zone registration is required after finishing the test run (and aftersetting all indoor unit addresses) using one of the following methods. (a) Zone registration using the remote controller (RCS...
Page 78 - For group control, only the main indoor unit should be assigned.; ZONE registration table
9 9 9 9 9 SC 77 S4359146 NOTE 1. Assign indoor unit addresses to the desired positions (central addresses) manually. 2. For group control, only the main indoor unit should be assigned. Sub indoor units cannot be assigned. ZONE GROUP Central address Indoor unit address (UNIT No.) Indoor unit address ...
Page 79 - Check the back up switch is ON for back side of PCB; will flash, checking the indoor unit address
9 9 9 9 9 SC 78 S4359146 9-6. Connection with Other Equipments 2055_M_I ON/OFF Digital input Alarm Output common CPEV AWG#16 ALL ON (+) CX TX ALL OFF (+) Input common COM +24 CPEV AWG#16 Name Digital input/output terminals Input/output item Control input Status output ON/OFF output Alarm outputPoten...
Page 80 - HOW TO PROCESS TUBING; 0-2. Flaring Procedure with a Flare Tool; Union; Deburring
79 S4359146 10. HOW TO PROCESS TUBING The narrow tubing side is connected by flare nut, and the wide tubing side is connected by brazing. 10-1. Use of the Flaring Method Many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between in...
Page 82 - Insulated tubes Drain hose
81 S4359146 10-7. Taping the Tubes (1) At this time, the refrigerant tubes (and electrical wiring if local codes permit) should be taped with armoring tape in 1 bundle. To prevent the con- densation from overflowing the drain pan, keep the drain hose separate from the refrigerant tubing. (2) Wrap th...
Page 84 - 5 minutes or more; If tubing length is; 0 minutes or more
5 5 5 5 5 C 83 S4359146 CAUTION To avoid nitrogen entering the refrigerant system in a liquid state, do not use the nitrogen cylinder up side down. Use the cylinder in a vertical standing position. (Refer to the previous page.) (4) Do a leak test of all joints of the tubing (both indoor and outdoor)...
Page 86 - TEST RUN
85 S4359146 12. TEST RUN 12-1. 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. (2) The control wiring is correctly connected and all electrical connection...
Page 87 - Setting of indoor control PCB
86 S4359146 12-2. PCB Setting ● Setting of outdoor control PCB (A) Standard control (single outdoor unit) In case of single outdoor unit installation, even if in case of twin, triple or quartet type (2, 3 or 4 indoor units), no setting necessary. Keep factory shipment state (R.C. address is set in “...
Page 88 - 0 auto address; Outdoor control PCB
87 S4359146 12-3. R.C. Address Setting Method Outdoor unit R.C. address setting method In case of group control or central control, set the R.C. address to 1, 2, 3, ... according to the No. of outdoor units. (“0” when shipped from factory) 1 ON ON side OFF side 2 0 R.C. address R.C. address R.C. add...
Page 92 - 2-10. The Main Alarms of Power Supply Troubles
91 S4359146 12-10. The Main Alarms of Power Supply Troubles Cause Remote controller display Outdoor protection Power supply voltage is abnormal. P2 (More than 260 V or less than 160 V between L and N phase) Negative phase or defective phase P5 Compressor contactor (Mg SW) is chattering. H18 12-9. Th...
Page 93 - Stem
92 S4359146 ■ Basic Functions of the Service Valves 0549_C_I 0550_C_I 0550_C_I Narrow tube service valve Wide tube service valve 0554_C_I Service port (B) 0546_C_I O-ring Stem 0547_C_I Action Narrow Tube Service Wide Tube Service Valve (3-Way) Valve (Ball Valve) CLOSED CLOSED Shipping and air purgin...
