Page 2 - SPECIAL PRECAUTIONS; accidental injury or death.; WARNING; CAUTION
2 IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and oper-ating 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 o...
Page 3 - Check of Density Limit; The density limit of refrigerant which is used in multi air condi-; NOTE; For the amount of charge in this example:; Refrigerant tubing
3 2. The standards for minimum room volume are as follows. (1) No partition (shaded portion) (2) When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas (open-ing without a door, or an opening 0.15% or larger than the respective floor spaces at the top or...
Page 4 - New; Be sure to recharge the refrigerant only in liquid form.; Precautions for Installation Using New Refrigerant; Care regarding tubing
4 New tool? 1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410A refriger- ant deterioration and compressor defects. Due to the features of the refrigerant and refrigerating machine oil, the prevention of water and other impurities becomes more...
Page 5 - Compressor specifications are different.; R22 refrigerating machine oil
5 Valve Liquid 3-2. Use R410A exclusive cylinder only. Single-outlet valve (with siphon tube) Liquid refrigerant should be recharged with the cylinder standing on end as shown. New refrigerant R410A cannot be used for earlier models 1. Compressor specifications are different. If recharging a R22 or ...
Page 6 - CONTENTS; Page
6 CONTENTS Page Page IMPORTANT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Please Read Before StartingCheck of Density LimitPrecautions for Installation Using New Refrigerant New refrigerant R410A cannot be used for earlier models 1. GENERAL . . . . . . . . . . . . . . . . . . . . . ...
Page 8 - Figure; Instruction manual; Part name
8 Table 1-1 Outdoor Unit 1-2. Accessories Supplied See Tables 1-1 – 1-8. 1-1. Tools Required for Installation (not supplied) 1. Flathead screwdriver 2. Phillips head screwdriver 3. Knife or wire stripper 4. Tape measure 5. Carpenter’s level 6. Sabre saw or key hole saw 7. Hacksaw 8. Core bits 9. Ham...
Page 9 - Field supply for suspending bolts and nuts.; Part Name
9 Table 1-2 (4-Way Air Discharge Semi-Concealed) (X-Type) Table 1-3 (1-Way Air Discharge Semi-Concealed) Table 1-4 (Concealed Duct) ● Use M10 or 3/8" for suspending bolts. ● Field supply for suspending bolts and nuts. Part Name Figure Q’ty Remarks Full-scale installation diagram 1 Drain hose 1 H...
Page 11 - Item
11 H3 LM LA LF LB LC L4 LG LH LD L2 H2 L1 H1 LE L3 C B 4 1 2 3 5 6 7 40 1. Main tubing length LM = LA + LB … b 262 ft. 2. Main distribution tubes LC – LH are selected according to the capacity after the distribution joint. 3. Sizes of indoor unit connection tubing 1 – 40 are determined by the connec...
Page 12 - Table 1-12 Outdoor Unit Tubing Connection Size (
12 *1: If future extension is planned, select the tubing diameter based on the total horsepower after extension. However extension is not possible if the resulting tubing size is two ranks higher. *2: The balance tube (outdoor unit tube) diameter is ø3/8" (ø9.52).*3: Type 1 tubing should be used...
Page 13 - Material; * When bending the tubes, use a bending; Required amount of charge = Necessary Amount of; * Always charge accurately using a scale for weighing.; Indoor unit type; Table 1-13 Indoor Unit Tubing Connection Size (
13 1-7. Straight Equivalent Length of Joints Design the tubing system by referring to the following table for the straight equivalent length of joints. Table 1-14 Straight Equivalent Length of Joints Table 1-15 Refrigerant tubing (Existing tubing can be used.) Tubing size (in. (mm)) Material O Mater...
Page 14 - DC; Table 1-18 System Limitations; Max. No. allowable connected outdoor units; Type of solenoid valve kit; Relationship between A/C units and refrigerant tubing; Install the solenoid valve kit 98 ft. or less from the indoor unit.
14 Common solenoid valve kit ● Multiple indoor units under group control can utilize a solenoid valve kit in common. ● Categories of connected indoor unit capacities are determined by the solenoid valve kit. Table 1-17 Refrigerant Charge Amount at Shipment (for outdoor unit) DC CHDZ09053 CHDZ14053 C...
Page 15 - Tube branching methods; Types of vertical trap specifications
15 WARNING Always check the gas density limit for the room in which the unit is installed. 1-11. Check of Limit Density When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally leaks out, its density does not exceed the limit level for tha...
Page 16 - Insulation; Table 1-20 Dimensions for connections of each part; Model name; For outdoor unit
16 1-13. Optional Distribution Joint Kits See the installation instructions packaged with the distribution joint kit for the installation procedure. Table 1-19 1. APR-CHRZP900BAB For outdoor unit (Capacity after distribution joint is 307.100 BTU/h or less.) 11-13/16 11-13/16 13-25/64 D C B E D F 3/4...
Page 17 - Table 1-21 Dimensions for connections of each part
17 2. APR-RZP224BAB Use: For indoor unit (Capacity after distribution joint is 76.400 BTU/h or less.) 3. APR-RZP680BAB Use: For indoor unit (Capacity after distribution joint is greater than 76.400 BTU/h and no more than 232.000 BTU/h.) 4. APR-RZP1350BAB Use: For indoor unit (Capacity after distribu...
Page 18 - (2) Use proper ventilation to carry fumes away from the work area.
18 Part Number Cover of relay kit 14 Relay kit 13 Cover of control box 12 Earth (M5 with washer) 11 Terminal for communication line 10 Terminal for power line 9 Base of control box 8 Service panel 7 Discharge tube: ID1/2" 6 Suction tube: ID5/8" 5 Liquid tube : ID3/8" 4 Suspension hook 3 ...
Page 20 - Notes on Installation; so that the front service panel can be removed.; Install the relay kit into the indoor unit.; Relay kit; Front
20 Suspension bolt (3/8" or M10) (field supplied) Nut (field supplied) (3/8" or M10) Washer M4 screws (12 pcs.) Suspension hook Notes on Installation • Be sure to secure the valve body by using its structure with the suspension bolt, etc. • Install the valve body within a distance of 98 ft. ...
Page 21 - LA
21 1-15. Example of Tubing Size Selection and Refrigerant Charge Amount Additional refrigerant charging Based on the values in Tables 1-10, 11, 12, 15 and 16-2 use the liquid tubing size and length, and calculate the amount of additional refrigerant charge using the formula below. Required additiona...
Page 22 - Main tubing
22 Checking of limit density Density limit is determined on the basis of the size of a room using an indoor unit of minimum capacity. For instance, when an indoor unit is used in a room (floor area 161 ft. 2 × ceil- ing height 8.8 ft. = room volume 1417 ft. 3 ), the graph at right shows that the min...
Page 23 - SELECTING THE INSTALLATION SITE; Front View; Ceiling-Mounted T ype; Side vie w; Front view; N OT E; Side view
23 2. SELECTING THE INSTALLATION SITE 2-1. Indoor Unit AVOID: ● areas where leakage of flammable gas may be expected. ● places where large amounts of oil mist exist. ● direct sunlight. ● locations near heat sources which may affect the performance of the unit. ● locations where external air may ente...
Page 24 - Example of installation of 2 units; Top view
24 Fig. 2-5 Fig. 2-6 Fig. 2-7 2-2. Outdoor Unit AVOID: ● heat sources, exhaust fans, etc. ● damp, humid or uneven locations ● indoors (no-ventilation location) DO: ● choose a place as cool as possible. ● choose a place that is well ventilated. ● allow enough room around the unit for air intake/ exha...
Page 28 - HOW TO INSTALL THE INDOOR UNIT; (3) Determine the pitch of the suspension bolts using the supplied; Suspension lug; Note: For DC Fan Tap Change Procedure; -3. Placing the Unit Inside the Ceiling
28 X 3. HOW TO INSTALL THE INDOOR UNIT ■ 4-Way Air Discharge Semi-Concealed Type (X Type) 3-1. Preparation for Suspending This unit uses a drain pump. Use a carpenter’s level to check that the unit is level. 3-2. Suspending the Indoor Unit (1) Fix the suspension bolts securely in the ceiling using t...
Page 30 - Do not install the pipe with an upward gradient; terminals) inside the electrical component box.
30 X Fig. 3-9 11-3/16 in. or less (as short as possible) 33-15/32 in. or less 0 – 45° * Length of supplied drain hose = 9-27/32 in. Fig. 3-10 Upward gradient prohibited Fig. 3-11 Fig. 3-12 Support pieces Water (Approx. 0.3 gal) Drain pan outlet Drainage check Plastic container for water intake Ov er...
Page 31 - Checking the unit position; If not within this range, malfunction or other trouble may occur.; Flap; Removing the corner cover
31 X Air-intake grille Ceiling panel Air-intake grille hinge 1 1 3-6. How to Install the Ceiling Panel 3-6-1. Before Installing the Ceiling Panel Checking the unit position (1) Check that the ceiling hole is within this range: 33-55/64 × 33-55/64 to 35-53/64 × 35-53/64 in. (2) Use the full-scale ins...
Page 32 - If the screws are not sufficiently tight-
32 X 3-6-2. Installing the Ceiling Panel After completing the wiring process, install the supplied wiring cover before installing the panel.It is not possible to install the wiring cover after install-ing the panel.The power must be turned ON in order to change the flap angle. (Do not attempt to mov...
Page 34 - DC Fan Tap Change Procedure; Setting; Indoor unit control PCB
34 X 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...
Page 35 - XM; Preparation for Suspending; This unit uses a drain pump. Use a carpenter’s level to check; Suspending the Indoor Unit; -10. Placing the Unit Inside the Ceiling
35 XM ■ 4-Way Air Discharge Semi-Concealed Type (XM Type) 3-8. Preparation for Suspending This unit uses a drain pump. Use a carpenter’s level 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,...
Page 36 - the drain and use the supplied hose band to prevent; The pipe cannot be removed when mainte-
36 XM 3-11. Installing the Drain Piping (1) Prepare standard hard PVC pipe (O.D. 1-1/32") for the drain and use the supplied hose band to prevent water leaks. (Fig. 3-33) The PVC pipe must be purchased separately. The transparent drain part on the unit allows you to check drainage. (2) Installin...
Page 37 - After wiring and drain piping are completed, use the following pro-; Be careful since the fan will start; Main unit
37 XM 3-12. Checking the Drainage After wiring and drain piping are completed, use the following pro- cedure to check that the water will drain smoothly. For this, pre- pare a bucket and wiping cloth to catch and wipe up spilled water. (1) Connect power to the power terminal board (R, S terminals) i...
Page 39 - (1) Check that the safety cord from the corner cover is
39 XM 3-13-5. 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 au...
Page 41 - -15. Placing the Unit Inside the Ceiling; Piping and wiring work must be performed; The length of the suspension bolts must be such that
41 A Fig. 3-57 Fig. 3-56 3-15. Placing the Unit Inside the Ceiling (1) Use the supplied M5 or 3/16" screws (4) to attach the full-size installation diagram to the indoor unit suspension lugs, in order to obtain the ceiling opening dimensions for suspending the unit. (Fig. 3-56) Caution: Piping a...
Page 42 - Ceiling
42 A Fig. 3-60 Fig. 3-61 2-1/8 Suspension bolts Tubing side 19/32 19/32 2-1/8 Suspension bolts 25/32 25/32 25/32 Ceiling material ● The indoor unit includes a drain pump. Be sure to use a level gauge and verify that the unit is level. ● Before inserting the ceiling material, complete as much of the ...
Page 43 - Do not use natural drainage.
43 A Fig. 3-64 Air bleed valve Fig. 3-66 Fig. 3-65 0 – 45° 11-13/16 in. or less 33-15/32 in. or less * Length of supplied drain hose = 9-27/32 in. Uphill slope Fig. 3-67 Support bracket CAUTION 3-17. Checking the Drainage After wiring and drain piping are completed, use the following procedure to ch...
Page 44 - Ceiling panel; Checking the position of the indoor unit; (1) Check that the dimensions of the ceiling opening are
44 A Refrigerant tubing joint (gas tube) Refrigerant tubing joint (liquid tube) Drain pipe connection (Be sure to connect thesupplied flexible hose.) Inter-unit Control Wiring Power supply outlet Fig. 3-69 ● Route the power wiring into the indoor unit through the power inlet on the side of the unit....
Page 45 - Removing the intake grille; to remove the; Side panel; (1) Fasten the hooks on both sides of the ceiling panel to; Stationary hook
45 A Hook Screw Hinge Intake grille Slide Press on the tabs with a flathead (minus) screwdriver while pulling out the intake grille. Screw Removing the intake grille Slide the intake grille hooks (2 locations) in the direction of the arrow to open the intake grille. (Fig. 3-72) When the intake grill...
Page 47 - Electrical component box
47 A 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. Then connect it to the connector (...
Page 48 - Installation and Service; for checking and servicing the electrical system.
48 U Fig. 3-84 Fig. 3-85 Indoor unit Inspectionaccess 17-23/32 17-23/32 Air outlet duct flange Min. 9-27/32 Min. 15-3/4 Min. 25-19/32 22-27/32 A (Suspension bolt pitch) Electrical component box Refrigerant tubing Min. 9-27/32 ■ Concealed Duct Type (U Type) 3-20. Required Minimum Space for Installati...
Page 51 - HT: Using the booster cable; Indoor Fan Performance; (1) Remove 4 screws on the electrical component box and; How to read the diagram
51 U Fig. 3-97 Inter-unit control wiring Power supply outlet (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. CAUTION Be careful since the fan will start when you short the pin on the indoor control board. HT...
Page 53 - Ceiling tiles
53 D Fig. 3-102 Hole-in-anchorHole-in-plug Concrete Insert Suspension bolt (M10 or 3/8") (field supply) 3-26. Suspending the Indoor Unit Depending on the ceiling type: ● Insert suspension bolts as shown in Fig. 3-102 or ● Use existing ceiling supports or construct a suitable support as shown in ...
Page 54 - Good; Downward gradient; Not good; (3) After connecting the drain pipe securely, wrap insulator; How to Read the Diagram; Exter
54 D Fig. 3-105 Fig. 3-106 Fig. 3-107 Min. 1-31/32 in. Inspection plug Min. 3-15/16 in. Good Min. 1/100 Downward gradient Not good 3-27. Installing the Drain Piping (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 pi...
Page 55 - (2) Refrigerant tubing • drain hose position
55 T ■ Ceiling-Mounted Type (T Type) 3-30. Required Minimum Space for Installation and Service (1) Dimensions of suspension bolt pitch and unit Table 3-6 Dimension Type 12, 18 A B C 33-21/32 35-53/64 8-17/64 24 44-19/64 46-29/64 8-17/64 B C A 6-11/16 12-19/32 26-49/64 1-5/64 1-5/64 Ceiling side (Sus...
Page 56 - (4) Wall and ceiling side opening position
56 T WARNING It is important that you use extreme care in supporting the indoor unit from the ceil-ing. Ensure that the ceiling is strong enough to support the weight of the unit. Before hanging the ceiling unit, test the strength of each attached suspension bolt. Fig. 3-115 Fig. 3-116 Ceiling tiles...
Page 59 - Rubber stopper; How to carry out power supply wiring
59 T 5-33/64 63/64 63/64 13/64 13/64 Twist tie (4 ties) Unit drain port Drain hose insulation(supplied) Hard PVC pipe(equivalent to VP-20)(Field supply) Position to fasten hose bands Drain hose (supplied) Hose band(2 bands, supplied) Unit drain pan Fig. 3-131 ● Never allow traps to occur in the cour...
Page 60 - -35. Removing the Rear Panel from the Unit; -37. Installing the Rear Panel onto the Wall
60 K ■ Wall-Mounted Type (K Type) 3-35. Removing the Rear Panel from the Unit (1) Remove the set screws used to fasten the rear panel to the indoor unit during transportation. (2) Press up on the frame at the 2 locations shown by the arrows in the figure at right, and remove the rear panel. NOTE Tub...
Page 61 - Installation screw cover
61 K (2) Check with a tape measure or carpenter’s level. This is important so that the unit is correctly installed. (Fig. 3-140) (3) Make sure the panel is flush against the wall. Any space between the wall and unit will cause noise and vibration. b) If the Wall is Brick, Concrete or Similar Drill 3...
Page 62 - Left or left-rear tubing
62 K Insulating tape Refrigerant tubing Rear panel tab Plastic cover Indoor andoutdoor unitconnection wiring (3) To mount the indoor unit on the rear panel. 1. When installing the indoor unit, position the indoor unit onto the installation tabs on the upper part of the rear panel. (Fig. 3-146) 2. Pr...
Page 64 - HOW TO INSTALL THE OUTDOOR UNIT
64 (Positions where anchor bolts are fastened) 31-7/64 (Installation hole pitch) 37-13/32 (Maxim um dimensions) 35-3/64 (Ceiling panel dimensions) 36-7/32 (Installation hole pitch) 35-3/64 (Ceiling panel dimensions) Installation anchor hole (4 – 19/32 s 25/32 oval holes) 4. HOW TO INSTALL THE OUTDOO...
Page 65 - -3. Remove the Brackets Used for Transport; After installing the unit, remove the; indicated by
65 Fig. 4-7 4-3. Remove the Brackets Used for Transport ● After installing the unit, remove the 2 transport brackets from the front and rear (4 brackets total). (Fig. 4-5) Remove the 2 screws (8 screws total) Remove the 2 transport brackets from the front and rear (4 brackets total) Remove 2 screws ...
Page 66 - Outer; Refrigerant tube port; Tubing routed out forward
66 4-5. Prepare the Tubing ● Material: Use C1220 phosphorous deoxidized copper as described in JIS H3300, “Copper and Copper Alloy Seamless Pipes and Tubes.” (For tubes that are ø1" (ø25.4 mm) or larger, use 1/2H material or H material. For all others use O material.) ● Tubing size Use the tubin...
Page 67 - Nitrogen; Work method; Tighten each cap as specified below.; Tightening torque for each cap
67 ● Precautions for brazing Be sure to replace the air inside the tube with nitrogen to prevent oxide film from forming during the brazing process. Be sure to use a damp cloth or other means to cool the valve unit during brazing. CAUTION 1. Be sure to use nitrogen. (Oxygen, CO 2 , and CFC must not ...
Page 68 - ELECTRICAL WIRING
68 Control wiring (A) Inter-unit (between outdoor and indoor units) control wiring (B) Remote control wiring (C) Control wiring for group control (D) Inter-outdoor unit control wiring AWG #18 (0.75 mm 2 ) Use shielded wiring* Use shielded wiring Use shielded wiring Use shielded wiring Max. 3,280 ft....
Page 69 - Disconnect switch; K Type; ALWAYS COMPLY WITH NATIONAL AND
69 * Disconnect switch (Field Supply) * * * * * * U2 U1 L2 L1 R2 R1 2 1 U2 U1 4 3 3 4 5 2 1 WHT Remotecontroller BLK 2 1 2 1 WHT Remotecontroller Group control: BLK 2 1 2 1 WHT Remotecontroller B C Indoorunit (No. n) Indoorunit (No. 1) Indoorunit (No. 2) Indoorunit (No. 3) A Outdoor unitINV unit L1L...
Page 70 - For XM Type; XM Type
70 ● For XM Type U2 U1 3 12 12 2 1 U2 U1 4 3 345 2 1 2 1 U2 U1 3 12 12 U2 U1 3 12 12 U2 U1 3 12 12 2 1 2 1 2 1 B C A L1 L2 L3 N LN LN LN LN 2 1 2 1 4 3 345 L1 L2 L3 N A D B B A A * * * * * * * Disconnect switch (Field Supply) Power supply208/230V, 1ø, ~60Hz Power supply208/230V, 3ø, ~60Hz Power supp...
Page 72 - How to connect wiring to the terminal
72 Fig. 5-4 Stranded wire Ringpressureterminal Str ip 3/8 in. Fig. 5-5 Wire Specialwasher Screw Ring pressureterminal Terminal plate Screw and Special washer Ringpressureterminal Wire WARNING Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also exist....
Page 73 - -4. Important Note When Wiring for Common Type; A Type
73 Earth screw Conduit Power wiring (field supplied) Optional remote control wire (field supplied) Earth screw Conduit Power wiring (field supplied) Clampingclip Optional remote control wire (field supplied) 3-way connection wiring with harness (supplied) Earth screw Conduit Clamping clip Power wiri...
Page 74 - Important Note When Wiring for Common Type (Continued); D Type
74 Optional remote control wire (field supplied) Earth screw Conduit Power wiring (field supplied) Clamping clip Earth screw Conduit Clamping clip Power wiring (field supplied) Optional remote control wire (field supplied) Model : KHX0752/0952/1252/1852 Conduit Clamping strap 3-way connection wiring...
Page 75 - -5. Important Note When Wiring for XM Type
75 Earth screw Clamping strap Conduit Power wiring (field supplied) Clasp Optional remote control wire (field supplied) 3-way connection wiring with harness (supplied) Entirely cover the remote wiring and the 3-way wiring harness with the clasp. Remote control wiring 5-5. Important Note When Wiring ...
Page 76 - HOW TO PROCESS TUBING; Use of the Flaring Method; Deburring
76 6. HOW TO PROCESS TUBING The liquid tubing side is connected by a flare nut, and the gas tubing side is connected by brazing. 6-1. Connecting the Refrigerant Tubing Use of the Flaring Method Many of conventional split system air conditioners employ the flaring method to connect refrigerant tubes ...
Page 77 - extended from the wall with the outdoor-side tubing.; Flare nut; Tube diameter; inch; Tube thickness; In order to prevent damage to the flare caused by
77 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. (2) Be sure to apply refrigerant lubricant to the match- ing surfaces of the flare and union before connecting them together. This is effectiv...
Page 78 - Tubing Insulation; Three tubes arranged together; Liquid tubing; Four tubes arranged together
78 Unit side insulator Insulation tape (white) (supplied) Sealer (supplied) Flare insulator (supplied) Tube insulator (not supplied) Heat resistant 248°F or above Vinyl clamps (supplied) Flare nut Fig. 6-8 Fig. 6-7 6-3. Insulating the Refrigerant Tubing Tubing Insulation ● Thermal insulation must be...
Page 80 - Leak test; Manifold gauge
80 Fig. 7-1a Fig. 7-2 Fig. 7-1b Fig. 7-3 7. 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 bl...
Page 81 - Evacuation; Required time for evacuation; If tubing length is
81 Fig. 7-4 (3) Do a leak test of all joints of the tubing (both indoor and outdoor) and all service valves. Bubbles indicate a leak. Wipe off the soap with a clean cloth after a leak test. (4) After the system is found to be free of leaks, relieve the nitrogen pressure by loosening the charge hose ...
Page 82 - Use a cylinder designed for
82 Fig. 7-5 Fig. 7-6 NOTE The required time in the above table is calculated based on the assumption that the ideal (or target) vacuum condition is less than –14.7 psig (–755 mm Hg, 5 Torr). (2) When the desired vacuum is reached, close the “Lo” knob of the manifold valve and turn off the vacuum pum...
Page 84 - Items to Check Before the Test Run; Turn the remote power switch on at
84 YES Make necessary corrections. Check the alarm contents. Check the alarm contents. Turn OFF the indoor and outdoor unit power. NO YES NO *1 *2 *3 *3 *2 CASE 1 CASE 2 CASE 3B CASE 3A YES YES NO YES NO NO NO YES YES NO Recheck the items to check before the test run. Have the outdoor sub units been...
Page 87 - (1) Automatic Address Setting from the Outdoor Unit; Turn ON the power to the indoor and outdoor units.; complete automatic address setting.; Refer to “Automatic Address Setting from the Remote Controller.”
87 8-4. Auto Address SettingBasic wiring diagram: Example (1) ON 1 2 3 1 ON 3 2 ON 1 2 2 ON 1 3 3 2 1 ON ON ON OFF ON OFF ON OFF ON OFF OFF (S006) (S007) (S005) (S004) (S003) (S002) 1 1-1 1-2 1-3 1-10 • If link wiring is not used (The inter-unit control wires are not connected to multiple refrigeran...
Page 88 - • If link wiring is used
88 1-1 1-2 2-1 2-2 2-9 1-3 1-13 2 9 2 1 ON 3 ON 1 2 3 ON 1 2 3 ON 1 2 3 ON 1 2 2 ON 1 3 1 3 1 ON 3 2 ON 1 2 2 ON 1 3 3 2 1 ON ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF Automatic address setting in Heating mode Automatic address setting in Cooling mode * When multiple outd...
Page 89 - Case 1; Automatic Address Setting (no compressor operation); Operation from the remote controllers is now possible.; Refer to “Automatic Address Setting from Remote Controller.”
89 Case 1 Automatic Address Setting (no compressor operation) ● Indoor and outdoor unit power can be turned ON for each system separately. Indoor unit addresses can be set without operating the compressors. Automatic Address Setting from Outdoor Unit 1. On the outdoor main unit control PCB, check th...
Page 92 - Display during automatic address setting; On outdoor main unit PCB; Remote controller display
92 is blinking LED 1 LED 2 ( : ON : Blinking : OFF) Display meaning After the power is turned ON (and automatic address setting is not in progress), no communication with the indoor units in that system is possible. After the power is turned ON (and automatic address setting is not in progress), 1 o...
Page 93 - nameplate on the back.
93 Request concerning recording the indoor/outdoor unit combination Nos. After automatic address setting has been completed, be sure to record them for future reference. List the outdoor main unit system address and the addresses of the indoor units in that system in an easily visible loca-tion (nex...
Page 94 - Viewing the LED 1 and 2 (D72 and D75) alarm displays; Possible cause of malfunction; Alarm; Continued; Alarm contents
94 8-7. Meaning of Alarm Messages Table of Self-Diagnostics Functions and Description of Alarm Displays Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on the wired remote controller. ● Viewing the LED 1 and 2 (D72 and D75) alar...
Page 96 - Alarm messages displayed on system controller
96 Alarm messages displayed on system controller Indoor or main outdoor unit is not operating correctly. Mis-wiring of control wiring between indoor unit, main outdoor unit and system controller. Indoor or main outdoor unit is not operating correctly. Mis-wiring of control wiring between indoor unit...
Page 97 - NAME OF PARTS
97 X XM <How to remove the filter> 1. Use a screwdriver to remove the bolt screw on each side for the two latches. (Be sure to reattach the two bolt screws after cleaning.) 2. Press on the two latches of the air intake grille with your thumbs in the direction of the arrow to open the grille. 3...
Page 98 - Remove the air filter attached to the air intake grille.; TROUBLESHOOTING; Tips for Energy Saving; will impair the performance of the unit.
98 X XM 4. Remove the air filter attached to the air intake grille. Care: After a prolonged idle period Care: Before a prolonged idle period Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a block-age, remove it. • Operate the fan for half a day to dry out the ins...
Page 100 - Contact your local dealer for this service.
100 A Care: After a prolonged idle period Care: Before a prolonged idle period Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a blockage, remove it. • Operate the fan for half a day to dry out the inside.• Disconnect the power supply and also turn off the circuit...
Page 101 - CONC EALED D UCT; Wa t e r d r a i n; Remove the air filter from the air intake grille.; Type Period; CONCEALED DUCT; Electrical box
101 U D 9-3. Concealed Duct (High-Static Pressure) Type (U, D Types) ■ NAME OF PARTS ■ CARE AND CLEANING CONC EALED D UCT U ty p e (s ta n d a r d st at ic p r es s u re ) Wa t e r d r a i n Fle x ib l e du ct (op t io nal) C a n v as duct (op t io nal) Air in take g rille(air intake) (op t io nal) ...
Page 102 - Avoid; Should the power fail while the unit is running
102 U D ■ 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. Air conditioner does not r un at all 1. Power f ailure. 1. After a po wer outage, pr ess ...
Page 103 - T t y pe
103 T Air intake grillfinger-hold Air filter Air intake grill Air filter finger-hold Latch Air filter finger-hold* Take hold of the finger-hold on the air filter, pull it toward you. Hook Screw Slide Screw <How to remove the filter> 1. Take hold of the finger-hold on the air intake grille and ...
Page 105 - ) on the display of the remote control
105 K <How to remove the filter> 1. Move the flap on the air outlet grille to its lowest position with the remote control unit. 2. The filter is disengaged by pushing the tab up gently. Hold the air filter by the tab at the bottom, and pull downward. When replacing the filter, make sure that t...
