For Outdoor Unit INSTALLATION INSTRUCTIONS – Inverter Multi Split System Air Conditioner – COOL / DRY Model This air conditioner uses the new refrigerant R410A. Refrigerant service valve size = 5/16" NOTE Contents Model Combinations Page Combine indoor and outdoor units only as listed IMPORTANT! below.
IMPORTANT! Please Read Before Starting When Installing… …In a Ceiling or Wall This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important Make sure the ceiling/wall is strong enough to hold the part of your job to install or service the system so it operates unit’s weight.
1. General This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instruc- tions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. If the electric wiring diagram does not appear in this manual, please check for the diagram on the indoor unit.
2. Installation Site Selection Indoor unit 2-1. Indoor Unit To prevent abnormal heat generation WARNING and the possibility of fire, do not place obstacles, enclosures and grilles in front of or surrounding the air conditioner in a way that may block air flow.
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install the indoor unit more than 3.3' (1 m) away from any antenna or power lines or connecting wires used for tele- vision, radio, telephone, security system, or intercom. Electrical noise from any of these sources may affect operation. install in a sturdy manner to avoid increased operating noise.
2-2. Connecting Indoor Units Figures (4a) – (4k) show the different types of indoor unit connections, including the use of a reducer. To select the required indoor unit to be connected, refer to the Combination Table that was included in the outdoor unit package.
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Outdoor unit Indoor unit 1/2"(12.70mm) (KMS1872) (XS1872) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) Fig. 4d (1/2"(12.70mm) 5/8"(15.88mm)) Locally purchased Flare 1/2"(12.70mm) Union 5/8"(15.88mm) Outdoor unit Indoor unit 5/8"(15.88mm) (KMS2472) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm)
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(3) Connecting indoor unit for CM3172A (1/2"(12.70mm) 3/8"(9.52mm)) Supplied Reducer Flare 1/2"(12.70mm) Union 3/8"(9.52mm) Outdoor unit Indoor unit 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) Fig. 4g (1/2"(12.70mm 3/8"(9.52mm)) Supplied Reducer Flare 1/2"(12.70mm)
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(1/2"(12.70mm) 5/8"(15.88mm))Locally purchased Flare 1/2"(12.70mm) Union 5/8"(15.88mm) Outdoor unit Indoor unit 5/8"(15.88mm) (KMS2472) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 1/2"(12.70mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) 3/8"(9.52mm) (KMS0772,KMS0972,KMS1272) (XMS0972,XMS1272) 3/8"(9.52mm) 1/4"(6.35mm) Flare 1/2"(12.70mm) Union 3/8"(9.52mm) (1/2"(12.70mm) 3/8"(9.52mm))Supplied Reducer Fig. 4j (1/2"(12.70mm) 5/8"(15.88mm)) Locally purchased Flare 1/2"(12.70mm) Union 5/8"(15.88mm)
(Fig. 5a) Heat source damp, humid or uneven locations. Obstacle above Outdoor unit choose a place as cool as possible. Min. choose a place that is well ventilated. Min. 7' (2 m) 7' (2 m) install in a location where at least two sides are unob- Fig.
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(1) Recommended dimensions of the baffle plates Air Intake Baffle Air Discharge Baffle 15/64" 6 mm) 1/4" 6.5 mm) 1/4" 6.5 mm) Fig. 5g Fig. 5h For Air Intake Dimensions Model (inch) 25-3/16 25/32 1-31/32 10-5/8 10-5/8 25/64 25/32 19/32 25-7/8 19/64 25/64 5-29/32 25/32...
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(3) Installation procedure 1. Air Intake Baffle 2. Air Discharge Baffle 1. Remove the panels front, top, side L and R from the (1) Left side unit and drill 4 holes of ø1/4 inch (6.5 mm) at the 1. Remove the top panel from the unit. prescribed positions.
Diagram of Outdoor Unit Installation 2-6. Never install only a single indoor unit. Ceiling-mounted Wall-mounted types cassette types Indoor unit D Indoor unit D Be sure to connect indoor and outdoor units only in combinations that are listed in the catalog or in the combination table that was provided with the outdoor unit.
3. Installation Process Embedding the Tubing and Wiring 3-1. Do not connect tubes to locations that are embedded. Be sure to bind refrigerant tubing and inter-unit cables together with vinyl tape. The power cable must be obtained on-site. (#12: Less than 85 ft.) # ...
NOTE Copper tubing When reaming, hold the tube end downward and be sure that no copper scraps fall into the tube. (Fig. 9) (3) Remove the flare nut from the unit and be sure to mount Reamer it on the copper tube. (4) Make a flare at the end of copper tube with a flare tool.* (Figs.
Torque wrench Be sure to match refrigerant CAUTION tubing and electric wiring between indoor and outdoor Spanner Indoor unit units. Outdoor unit Fig. 15 3-6. Insulation of Refrigerant Tubing Insulation IMPORTANT Thickness: min. 5/16" Min. To prevent heat loss and wet floors due to dripping of con- (8 mm) 5/16"...
3-7. Taping the Tubes After a tube has been insulated, CAUTION never try to bend it into a narrow curve, as this may cause the tube Clamp to break or crack. Insulated tubes (1) At this time, the 2 refrigerant tubes (and electrical wire if local codes permit) should be taped together with armoring tape.
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Stopper Cap tightening torque: 170 – 215 lbs·in Spindle Perform the air purge for tubes A, B, C, and D. Use the same (200 – 250 kgf·cm) procedures for all tubes. Service port (Tighten by hand, then Screw diameter: 1/2 use a wrench to turn (1) Check that each tube (both narrow and wide tubes) UNF 20 threads...
(11) Replace the flare nut on the wide tube service port and fasten the flare nut securely with an adjustable wrench or box wrench. Next, mount the valve cap and tighten it with a torque wrench (the cap needs to be tightened with the torque of 180 lbs·in (200 kgf·cm)).
5. Wiring Instructions 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, with a power supply disconnect and circuit break- er for overcurrent protection provided in the exclusive line.
WARNING WARNING To avoid the risk of electric shock, each air Be sure to comply with local codes on running the conditioner unit must be grounded. wire from the indoor unit to the outdoor unit (size For the installation of a grounding device, please of wire and wiring method, etc.).
5-4. How to Connect Wiring to the Terminal Loose wiring may cause the WARNING terminal to overheat or result in unit malfunction. A fire hazard may also exist. There- fore, be sure all wiring is tightly connected. When connecting each power wire to the corresponding terminal, follow the instructions “How to connect wiring 9/32"...
5-5. Wiring Instructions for the Outdoor Unit CAUTION Be sure to correctly align inter-unit cables A, B, C and D. Outdoor unit Terminal board Power supply 1 2 3 4 5 6 7 8 9 10 11 12 (conduit) Power: Single-phase, 230/208VAC 60HZ Power breaker...
Regulations on wire size differ from locality to locality. For Lock nut Cabinet field wiring requirements, please refer to your local electri- cal codes. Make sure that the installation fully complies with all local and national regulations. (1) Remove access panel “C”. (Fig. 32) (2) Connect the inter-unit and power supply line accord- ing to the drawing on the panel side.
7. Connecting a Home Automation device The HA (white) 4P terminal is located on the indoor unit PCB. If a HA device will be used, connect it to this terminal. 8. Installation Check Sheet The strength of the installation location is sufficient to support the air conditioner weight. The indoor and outdoor units are installed level and vertically.