Sanyo CH2442 manual

Model Combinations Combine indoor and outdoor units only as listed below. Indoor Units and Outdoor Units Indoor Units Type 4-Way Air Discharge Semi-Concealed (Matching Ceiling Panel) Wall-Mounted Ceiling-Mounted Concealed-Duct Outdoor Units Wired Remote Controller Wireless Remote Controller Weekly Timer System Controller INST ALLA TION INSTR UCTION[...]

Please Read Before Starting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. For safe installation and trouble-free operation, you must : ⓦ Carefully read this instruction booklet[...]

P age CONTENTS IMPORTANT Please Read Before Starting 1. GENERAL ................................................................... 4 1-1. T ools Required f or Installation (Not Supplied) 1-2. Accessories Supplied with Unit 1-3. T ype of Copper T ube and Insulation Material 1-4. Additional Materials Required for Installation 1-5. T ubing Length 2. [...]

P age 8. HO W TO INST ALL THE WEEKL Y TIMER (OPTIONAL P ART) ................................................... 65 8-1. Mounting Dimensions f or Continuous Installation 8-2. When Using a W all Box f or Flush Mounting 8-3. Wiring Diagram 8-4. T est Run Setting 8-5. Memor y Back Up Function f or P ower F ailure Compensation 9. HO W T O INST ALL THE [...]

4 S4359146 1. GENERAL This booklet briefly outlines where and how to install the air conditioning system. Please read ov er the entire set of instructions for the indoor and outdoor units and make sure all accessory par ts listed are with the system bef ore beginning. 1-1. T ools Required for Installation (Not Supplied) 1. Standard screwdriv er 2. [...]

5 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) T able 1-1 XH (4-Wa y Air Discharge Semi-Concealed) P art Name Figure Q’ty Remarks Full-scale installation diagram 1 Flare insulator 2 W asher 8 Insulating tape 1 Hose band 2 P acking 1 Drain insulator 1 Drain hose [...]

6 S4359146 T able 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 T ube connector 1 For temporarily suspending indoor unit from ceiling For drain h[...]

7 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) T able 1-6 (Accessories for the Wired Remote Controller) P art Name Figure Q’ty P art Name Figure Q’ty 1 Spacers 2 2 Wire joints 4 W ood screws 2 T able 1-7 (Accessories for the Wireless Remote Controller) <RCS[...]

8 S4359146 T able 1-8 (Accessories for the Weekl y Timer) P art Name Figure Q’ty P art Name Figure Q’ty W eekly timer 1 W ood scre ws 2 1 Spacers 2 2 Clampers 2 T able 1-9 (Accessories for the System Contr oller) P art Name Figure Q’ty P art Name Figure Q’ty System controller 1 1 41 Machine screws M4 × 1 in. Connecting wiring length 4 ft. [...]

9 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) 1-5. T ubing Length ● Refrigerant tubing between the indoor and outdoor units should be kept as short as possible. ● Select and decide the installation location so that the length of the refrigerant tubing will be[...]

10 S4359146 Ceiling-Mounted T ype 2. SELECTING THE INST ALLA TION SITE Indoor Unit A V OID: ● areas where leakage of flammab le gas may be e xpected. ● places where large amounts of oil mist e xist. ● direct sunlight. ● locations near inv er ter lamps which may aff ect perf ormance of the unit. ● locations near heat sources which ma y aff[...]

11 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) Out- door unit Heat source Hot air Exhaust fan 0591_C_I Outdoor Unit A V OID: ● heat sources, e xhaust fans , etc. (Fig. 2-1) ● damp , humid or une ven locations. DO: ● choose a place as cool as possible . ● [...]

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" 21-13/16" 2-1. Air Discharge Chambe[...]

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-proof ducting (High platform) In regions with snow f all, the outdoor unit should be provided with a platf or m and snow-proof duct. Fig. 2-5 Fig. 2-6 Air Inta[...]

1 1 1 1 1 X 14 S4359146 Fig. 3-2 Fig. 3-1 Hole-in-anchor Hole-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. Use a carpenter’s level to check that the [...]

1 1 1 1 1 X 15 S4359146 3-3. Placing the Unit Inside the Ceiling (1) When placing the unit inside the ceiling, deter- mine the pitch of the suspension bolts using the supplied full-scale installation diagram. (Fig. 3-4) The size of the opening for the indoor unit can be confirmed by attaching the full-scale installation diagram beneath the unit. (F[...]

1 1 1 1 1 X 16 S4359146 NOTE 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) P acking (supplied) T ransparent par t for checking drainage Hose band (supplied) Drain hose adapter (supplied) Hard PVC pipe (n[...]

1 1 1 1 1 X 17 S4359146 3-5. Checking the Drainage After wiring and piping are completed, use the follow- ing procedure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth ready to catch and wipe up spilled water. Do not supply power to the unit until the tubing and wiring to the outdoor unit are completed. (1) [...]

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 change the direction or air flow. 3-6. Before Instal[...]

1 1 1 1 1 X 19 S4359146 3-7. Installing the Ceiling Panel (1) Lift the ceiling panel and position it to align the panel hook with the panel catch of the indoor unit. The ceiling panel must be mounted in the correct direction. Note that the 2 catches of the panel differ in size. Confirm that the catches are correctly matched be- tween the ceiling pa[...]

1 1 1 1 1 X 20 S4359146 (1) Accessories ● Check that the f ollowing par ts are in the bo x when unpacking. 3-9. Duct for Fresh Air ● There is a duct connection part on sideface of the indoor unit. (Fig. 3-16) ● Optional air-intake plenum (including duct connection box and flange) can be attached to the indoor unit. NAME QT’Y REMARKS Cord wi[...]

1 1 1 1 1 X 21 S4359146 (e) Installing the ceiling panel ● Attach the ceiling panel to the chamber. Drawing the panel downwards sets the panel in position temporarily with the panel catch (at 2 locations). ● Remove the socket cover of the air-intake plenum and pass the 8P sockets through it. (Fix the panel lead wire to chamber side clamper.) (F[...]

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. NOTE Indoor side Outdoor side 0066_T_ I Fig. 3-19 Tape Full-scale installation diagram 0940_T_I Cut at slight angle PVC pipe (locally purchased) 0941_T_I Plastic cover INSIDE W all Slight angle PVC pipe OUTSIDE 0942_K_ I Wall fixture Set [...]

2 2 2 2 2 K 23 S4359146 One hole is required for the air conditioner tubing, and may be either on the left or right side. (Also see sec- tion 3-14. Preparing the Indoor Side Tubing.) (1) Tape the full-scale installation diagram on the wall at the location selected. Make sure the unit is horizontal, using a level or tape measure to measure down from[...]

2 2 2 2 2 K 24 S4359146 3-12. Installing the Wall Fixture onto Wooden or Gypsum Wall Confirm that the wall is strong enough to support the unit. a) If the Wall is Wooden (1) Attach the wall fixture to the wall with the 9 screws provided. (Fig. 3-28) If you are not able to line up the holes in the wall fixture with the beam locations marked on the w[...]

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. (Fig. 3-34) (5) Remove the 3 screws. (Fig. 3-34) (6) [...]

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) Arrangement for Left-rear and Right-rear Tubing. (a) It[...]

2 2 2 2 2 K 27 S4359146 3-15. Wiring Instructions General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its name plate, then carry out the wiring closely following the wiring diagram. (2) Provide a power outlet to be used exclusively for each unit a power supply disconnect and circuit breaker for overcur[...]

2 2 2 2 2 K 28 S4359146 3-16. Wiring Instructions for Inter-Unit Connections (a) Insert the inter-unit wiring (according to local codes) into the through-the-wall PVC pipe. Run the wiring toward the indoor side allowing approx. 5". to extend from the wall face. (Fig. 3-44) Never fix the wiring by any means before the indoor unit is fully seate[...]

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) Carefully bend the tubing (if necessary) to run along the [...]

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 furniture or floors. (Fig. 3-54) * Foamed polyethylene or [...]

3 3 3 3 3 T 31 S4359146 ■ Ceiling-Mounted Type (TH Type) 3-19. Suspending the Indoor Unit (1) Place the full-scale diagram (supplied) on the ceiling at the spot where you want to install the indoor unit. Use a pencil to mark the drill holes. (Fig. 3-55). Since the diagram is made of paper, it may shrink or stretch slightly because of high tempera[...]

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 removing the two screws which fix them. (Fig. 3-60) (6)[...]

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. NOTE A ceiling surface is not always level. Please confirm that the indoor unit is evenly suspended. For[...]

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 unit through the connection port. (Fig. 3-68) If conn[...]

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 the ceiling so that the indoor unit and ducts are not visible. Only the air intake and air outlet ports are visible from below. ● The minimum space for installation and service is[...]

4 4 4 4 4 U 36 S4359146 3-23. Suspending the Indoor Unit Depending on the ceiling type: • Insert suspension bolts as shown in Fig. 3-74 or • Use existing ceiling supports or construct a suitable support as shown in Fig. 3-75. It is important that you use extreme care in supporting the indoor unit inside the ceiling. Ensure that the ceiling is s[...]

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 socket of the unit and the PVC pipe to allow the[...]

4 4 4 4 4 U 38 S4359146 ● Do not install an air bleeder as this may cause water to spray from the drain pipe outlet. (Fig. 3-81) ● If it is necessary to increase the height of the drain pipe, the section directly after the connec- tion port can be raised a maximum of 19-11/16 in. Do not raise it any higher than 19-11/16 in., as this could resul[...]

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 screws on the electrical component box and remove t[...]

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 equal and anchor. Refer to Section 2. “Selecting t[...]

41 S4359146 5. ELECTRICAL WIRING 5-1. 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. (2) Provide a power outlet to be used exclusively for each unit, and a power supply disconnect and circuit breaker for overcurrent pro[...]

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-unit power wiring Single phase 230/208V Inter-unit control wiring (Low voltage) Remote controller Outdoor Unit Ground Ground (Option) B D A 2085_M_I Power supply Single phase 230/208V R.C. Address on the PCB:[...]

43 S4359146 (2) Basic wiring diagram for group control This diagram shows when several units (max. 8) are controlled by a remote controller. In this case, a remote controller can be connected at any indoor unit. ● R.C. Address should be set before turning the power on. ● Auto. address setting can be executed by a remote controller automatically[...]

44 S4359146 Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, ensure that all wiring is tightly connected. When connecting each power wire to the correspond- ing terminal, follow the instructions on “How to connect wiring to the terminal” and fasten the wire securely with the[...]

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 continuous installation) (from wall) (during conti[...]

46 S4359146 Fig. 6-3 6-2. Wired Remote Controller Installation ● Do not supply power to the unit or try to operate it until the tubing and wiring to the outdoor unit is completed. ● Do not twist the control wiring with the power wiring or run it in the same metal conduit, because this may cause malfunction. ● Install the remote control- ler a[...]

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 wiring according to the above wiring diagram. ?[...]

48 S4359146 6-4. Wiring System Diagram for Group Control This diagram shows when several units (maximum of 8) are controlled by a remote controller (master unit). In this case, a remote controller can be connected at any indoor unit. Wiring procedure Wire according to the left diagram: ● Address setting is executed automatically when the outdoor [...]

49 S4359146 6-5. Wiring System Diagram for Multiple Remote Control ■ When Installing Multiple Remote Controllers This multiple remote controller system is used for operating the unit(s) at different positions. (A maximum of 2 remote controllers can be installed.) ● Setting method To execute this control, make the setting according to the follow[...]

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 of judged indoor unit is large.) Indoor unit is det[...]

51 S4359146 6 6 6 6 6 RC (WD) Thermistor failure Fault with comp. and its circuit Possible Cause of Malfunction Indoor thermistor is either open or damaged. Outdoor thermistor is either open or damaged. Protective device for comp. is activated. EEPROM (ICB of PCB) failure Model setting of indoor unit is not matching the outdoor unit. When using gro[...]

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 running. ● When this happens, a double beep tone sou[...]

7 7 7 7 7 RC (WL) 53 S4359146 7-2. Room Temperature Sensor Setting The room temperature sensors are built into the indoor unit and the wireless remote controller. Either of these room temperature sensors can operate. The system is shipped from the factory set to the indoor unit sensor. To switch to the remote controller sensor, press the sensor swi[...]

7 7 7 7 7 RC (WL) 54 S4359146 <RCS-SH80UA. WL> ■ 4-Way Air Discharge Semi-concealed Type (XH Type) 7-5. Indicator section Installation ● Remove the ceiling panel and indicator cover and install the indicator section. (1) Remove the ceiling panel. (2) Remove the corner cover behind the mark sec- tion. (3 screws) (3) Remove the mark section[...]

7 7 7 7 7 RC (WL) 55 S4359146 Cover A Cover A Panel Indicator section Side panel 1536_T_I Indicator section Cover B (Not used when the indicator section is installed.) Air intake grille Recess Recess 7-8. Operating Controller Installation ● Do not twist the operating controller wires together with the power supply wires. Doing so can result in ma[...]

7 7 7 7 7 RC (WL) 56 S4359146 7-9. Electrical Wiring Connection method (1) Connect W1 to the indoor PCB WL connector. (2) Connect W3 from the indicator section with W2 from the operating controller using the relay connector. 7-10. Test Run Switch Test run switch is located at operating control unit. Regarding the test run, please refer to section 1[...]

7 7 7 7 7 RC (WL) 57 S4359146 7-11. Misoperation Alarm Indicators Alarm indicator lamps on the indoor unit indicate the error cause when the air conditioner fails to operate upon being switched on. The possible alarm indica- tions are given in Table 7-1. Fig.7-12 shows the location of the alarm lamps on the indoor unit. (See Table 7-1, Fig. 7-12) A[...]

7 7 7 7 7 RC (WL) 58 S4359146 <RCS-BH80UA.WA> ● If the signal receiving unit is installed near rapid- start type or inverter type fluorescent lamp (neither one having glow lamps), it may be impossible to receive signals from the wireless remote control- ler. To avoid signal inter- ference from fluorescent lamps, install the receiv- ing unit[...]

7 7 7 7 7 RC (WL) 59 S4359146 ● When using the signal receiving unit on a wall with the front exposed, choose a wall surface that the signal receiving unit can be mounted on. (1) Insert a flat tip (minus) screwdriver into the slot on the lower side of the signal receiving unit and pry off the back case as shown in Fig. 7-14. (2) The wire rooting [...]

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. P eel a wa y 9/16 in. of shield from the wire f or the connecti[...]

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 control- ler and dedicated service check lines (854-9-9[...]

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 procedure Install the wiring according to the abov[...]

7 7 7 7 7 RC (WL) 63 S4359146 7-17. Wiring System Diagram for Group Control This diagram shows when several units (maximum of 8) are controlled by a signal receiving unit (master unit). In this case, a signal receiving unit can be connected at any indoor unit. Wiring procedure Wire according to the left diagram: ● Address setting is executed auto[...]

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 according to the following procedure. (1) Of the two [...]

7 7 7 7 7 RC (WL) 65 S4359146 8. HOW TO INSTALL THE WEEKLY TIMER ( OPTIONAL PART ) Do not supply power to the unit or try to operate it until the tubing and wiring to the outdoor unit is completed. 8-1. Mounting Dimensions for Continuous Installation ● For vertical continuous installation, the space between the weekly timer and the remote control[...]

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 Back Up Function for Power Failure Compen[...]

9 9 9 9 9 SC 67 S4359146 9. HOW TO INSTALL THE SYSTEM CONTROLLER (OPTIONAL PART) Fig. 9-1 2041_C_I System controller Switch box (no cover) M4 × 1-3/16 in. Screws (2) Flat-top Screw Back case Gap Coin 2042_M_I Gap Fig. 9-2 Do not supply power to the unit or try to operate it until the tubing and wiring to the outdoor unit is completed. 9-1. System [...]

9 9 9 9 9 SC 68 S4359146 9-2. Electrical Wiring B1 Indoor unit PCB CRV (CN91: WHT) 2P terminal base Indoor unit System controller Accessary connector Wire joint connection 2044_M_I B2 B3 B4 B5 B6 U1 U2 How to connect electrical wiring (1) Connect B1, B2 to indoor PCB CRV connector using accessary 2P connector. (*No polarity) Total wire legth is les[...]

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 controller ZONE 1, 2, 3, 4 mode: Indoor units in one of zone 1, 2[...]

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 control 1) means ON/OFF operation cannot excecute by re[...]

9 9 9 9 9 SC 71 S4359146 9-4. Mode Setting According to function of each system controller, set SW1 as Fig. 9-5. (1) Central control/Remote control mode ● Central control mode System controller is used as central control equip- ment. Individual setting by remote controller can be inhibitted by system controller ● Remote control mode System cont[...]

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 after setting all indoor unit addresses) using one of the following methods. (a) Zone registration using the remote controller (RCS-SH80UG) Refer to page 73 (b) Zone registration u[...]

9 9 9 9 9 SC 73 S4359146 (a) Zone registration using the remote controller (RCS-SH80UG) (Determination of central address) ● In this case, after confirming which indoor unit is connected to the remote controller and that the air conditioner in the OFF state, you set the central addresses one at a time. ● If the system has no remote controller, [...]

9 9 9 9 9 SC 74 S4359146 (b) Zone registration using the system controller (SHA-KC640G) ● In this case, you set all central addresses by system controller at once manually. (1) Press the and ZONE buttons at the same time for more than 4 seconds. and CODE No. C1 will flash. (2) After confirming that CODE No. C1 is displayed, press the button. Once[...]

9 9 9 9 9 SC 75 S4359146 (c) Automatic zone registration using the system controller (SHA-KC64UG) (1) Press the and ZONE buttons at the same time for more than 4 seconds. and CODE No. C1 will flash. (2) Select CODE. No. C2 by pressing and ( ) button and press the button. C2 changes from flashing to ON state and automatic zone registration will star[...]

9 9 9 9 9 SC 76 S4359146 ■ How to check overlapping of central address No. (1) Press the and ZONE buttons at the same time for more than 4 seconds. and CODE No. C1 will flash. (2) Select CODE. No. C3 by pressing , ( ) button and press the button. C3 changes from flashing to ON state and will flash. Then auto. overlap checking will start . (3) If [...]

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 (UNIT No.) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 [...]

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 output Potential tree A contact, static (relay output) Wire l[...]

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 indoor and outdoor units. In this method, the copper[...]

80 S4359146 10-4. Precautions during Brazing ● Replace air inside the tube with nitrogen gas to prevent copper oxide film from forming during the brazing process. ● Do not allow the tubing to get too hot during the brazing process. The nitrogen gas inside the tubing may overheat, causing refrigerant system valves to become damaged. Therefore al[...]

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 the armoring tape from the bottom of the outdoor uni[...]

5 5 5 5 5 C 82 S4359146 11. AIR PURGING 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 ● water may lead to corrosion of pa[...]

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) and both wide and narrow service valves. Bubbles [...]

5 5 5 5 5 C 84 S4359146 Charging additional refrigerant ● Charge additional refrigerant (calculated from the narrow tube length as shown in Sec. 1-5) using the wide tube service valve with the system in cooling operating mode. (Fig. 11-5) ● Use a balance to measure the refrigerant accu- rately. Finishing the job (1) With a hex wrench, turn the [...]

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 connections are tight. (3) The protective spacers for the [...]

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 “0”). In this case, auto. address operation t[...]

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. address (S3 2P dip switch, green or blue) (S2 Rot[...]

88 S4359146 12-4. Automatic Address Setting Method — For group control and central control with multiple outdoor units — Carry out automatic address setting with the remote controller. (1) All auto. address operation 1 Press the and ( ) buttons at the same time for more than 4 seconds. 2 Press the button after confirming the CODE No. AA (CODE N[...]

89 S4359146 12-6. Test Run Procedure 1) One of CN006 of all linked outdoor units shold be short. 2) In case of using system controller, zone registration is required after finishing Test run. Regarding the zone registration, please refer to page 74 and 75. NOTE Set the outdoor unit R.C. address. Turn on power supply switch. Execute auto. address op[...]

90 S4359146 12-7. Items to Check Prior to Test Run (1) Turn on the power supply switch more than 5 hours before in order to charge the crank case heater. (2) Fully open the outdoor service valve after making the leak inspection of field connected tubing, vacuuming, and gas charging if necessary. (3) Check the capacity code setting. * The factory se[...]

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. The Main Alarms of Unit Troubles Trouble detected Re[...]

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 purging Fully Fully OPEN OPEN Operating and test runni[...]

93 S4359146 13. PUMP DOWN Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing ant of the gas. Pump down is used when the unit is to be moved or before servicing the refrigerant circuit. Pump down procedure Be sure to carry out pump down with the unit in cooling mode. (1) Connect the low pressure si[...]