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INSTALLATION AND OPERATION MANUAL
– DC INVERTER Air Conditioner –
for Refrigerant R410A
R410A Models
Indoor Units
SPW-XR254EH56
SPW-XR364EH56
SPW-XR484EH56
Outdoor Units
SPW-CR254GVH56-C, SPW-CR364GVH56-C, SPW-CR484GVH56-C
C Outdoor Units
SPW-CR254GV56-C, SPW-CR364GV56-C, SPW-CR484GV56-C
* Refrigerant R410A is used in the outdoor units.
Optional Controllers
Remote Controller RCS-SH80AG
Wireless Remote Controller RCS-TH80AG.WL
RC Wireless Remote Controller RCS-BH80AG.WL
Simplified Remote Contr
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IMPORTANT! Please Read Before Starting When Installing… …In a Room This air conditioning system meets strict safety and operat- ing standards. As the installer or service person, it is an Properly insulate any tubing run inside a room to prevent important part of your job to install or service the system so it “sweating” that can cause dripping and water damage to operates safely and efficiently. walls and floors. …In Moist or Uneven Locations For safe installation and trouble-free operation,
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2. The standards for minimum room volume are as Check of Density Limit follows. The room in which the air conditioner is to be (1) No partition (shaded portion) installed requires a design that in the event of refrigerant gas leaking out, its density will not exceed a set limit. The refrigerant (R410A), which is used in the air condi- tioner, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to pro- tect the ozone layer. However, since it contains
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CONTENTS Page Page IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2-9. Duct for Fresh Air Please Read Before Starting 3. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . .13 Check of Density Limit 3-1. General Precautions on Wiring 3-2. Recommended Wire Length and Wire Diame- 1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1-1. Tools Required for Installation (not supplied) ter for Power Supply System 1-2. Accessories supplied with the uni
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2. HOW TO INSTALL THE INDOOR UNIT Hole-in-anchor 2-1. Suspending the Indoor Unit Hole-in-plug Concrete Insert This unit uses a drain pump. Use a carpenter’s level to check that the unit is level. 2-2. Preparation for Suspending (1) Fix the suspension bolts securely in the ceiling Suspension bolt (M10 or 3/8") using the method shown in the diagrams (Figs. (field supply) 2-1 and 2-2), by attaching them to the ceiling 0038_T_I Fig. 2-1 support structure, or by any other method that ensures that the
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2-3. Placing the Unit Inside the Ceiling (1) When placing the unit inside the ceiling, deter- Full-scale installation diagram mine the pitch of the suspension bolts using the (printed on a cardboard packing) supplied full-scale installation diagram. (Fig. 2-4) The size of the opening for the indoor unit can be confirmed by attaching the full-scale installation diagram beneath the unit. (Fig. 2-4) Tubing and wiring must be laid inside the ceiling when suspending the unit. If the ceiling is alread
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2-4. Installing the Drain Piping Transparent part for Hard PVC pipe Hose band checking drainage (not supplied) (supplied) (1) Prepare standard hard PVC pipe for the drain and use the supplied drain hose and hose band to prevent water leaks. The PVC pipe must be purchased separately. The transparent part allows you to check drain- age. (Fig. 2-6) Drain hose Packing Drain hose adapter (supplied) (supplied) (supplied) 0964_X_I Tighten the hose clamps Fig. 2-6 CAUTION so their locking nuts face upwa
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2-5. 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) Take off the tube cover and through the opening, slowly pour about 1,200 cc of water into the drain pan to check drainage. (2) Do Test Run to check the drainage after complet
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n Ceiling Panel Never touch or attempt to move the air direction louver CAUTION by hand or you may damage the unit. Instead, use the remote control unit if you want to change the direction or air flow. 2-6. Before Installing the Ceiling Panel (1) Remove the air-intake grille and air filter from the ceiling panel. (Figs. 2-13 and 2-14) (a) Remove the 2 screws on the latch of the air- intake grille. (Fig. 2-13) Screw (b) Press on the 2 latches of the air-intake grille Latch with your thumb in the
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2-7. Installing the Ceiling Panel (1) Lift the ceiling panel and position it to align the (5) Install the air filter and air-intake grille by perform- panel hook with the panel catch of the indoor unit. ing the steps in section 2-6 in reverse. NOTE NOTE The ceiling panel must be mounted in the correct Rehook the safety string before closing the air-intake direction. Note that the 2 catches of the panel differ in grille. size. Confirm that the catches are correctly matched be- 2-8. When Removing
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ø112 2-9. Duct for Fresh Air For fresh air intake l There is a duct connection part on sideface of the indoor unit. (Fig. 2-16) l Optional air-intake plenum (including duct connection box and flange) can be attached to the indoor unit. Air-intake plenum Type CMB-GSJ80U 25 CMB-GSJ140U 36, 48 55 Detail of fresh air intake (1) Accessories 2264_X_S l Check that the following parts are in the box when unpacking. Fig. 2-16 NAME QT’Y REMARKS Cord with socket Connecting line. Not ne
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(e) Installing the ceiling panel Duct connection l Attach the ceiling panel to the chamber. flange Duct connection box Drawing the panel downwards sets the panel in Installation screws position temporarily with the panel catch (at 2 (M4 × 12) locations). l 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.) (Fig. 2-17) Panel catch l Connect the 8P socket (electrical component box side) to the 8P socket (ceiling
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3. ELECTRICAL WIRING 3-1. General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit (7) Regulations on wire diameters differ from locality as shown on its nameplate, then carry out the to locality. For field wiring rules, please refer to wiring closely following the wiring diagram. your LOCAL ELECTRICAL CODES before begin- ning. (2) Provide a power outlet to be used exclusively for each unit, and a power supply disconnect and cir- You must ensure that installati
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3-3. Wiring System Diagrams Indoor unit (No. 1) L Outdoor unit Power supply 1 N INV unit 220-240V 50Hz 2 A L Power supply L C 200-240V 50Hz Ground B N U1 N Remote U2 D controller Ground 1 1 R1 WHT 1 2 2 R2 BLK 2 Ground C Indoor unit (No. 2) L Power supply 1 N 220-240V 50Hz 2 Ground B U1 U2 R1 R2 Ground C Indoor Group control: unit (No. 3) L Power supply 1 N 220-240V 50Hz 2 Ground B U1 E U2 R1 R2 Ground C Indoor unit (No. n) L Power supply 1 N 220-240V 50Hz 2 Ground B U1 U2 R1
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CAUTION (1) When linking outdoor units in a network (S-net link system), 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.) Otherwise the communication of S-net link system is not performed. For a system without link (no con- nection wiring between outdoor units), do not remove the short plug. (2) Do not install the inter-
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(5) Use shielded wires for inter-unit control wiring (c) and ground the shield on both sides, other- wise misoperation from noise may occur. (Fig. 3-4) Connect wiring as shown in Section “3-3. Shielded wire Wiring System Diagrams.” Ground Ground Loose wiring may cause the terminal to overheat or WARNING result in unit malfunction. Fig. 3-4 A fire hazard may also exist. Therefore, ensure that all wiring is tightly connected. When connecting each power wire to the terminal, fol- low the instructi
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Deburring 4. HOW TO PROCESS TUBING Before After The narrow tubing side is connected by a flare nut, and the wide tubing side is connected by brazing. 4-1. Connecting the Refrigerant Tubing Use of the Flaring Method Many of conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts. Fig. 4-1 Flaring Procedure with a Flare Tool (1
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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 lubricant here and here (2) Be sure to apply refrigerant lubricant to the match- ing surfaces of the flare and union before connect- Fig. 4-4 ing them together. This is effective for reducing gas leaks. (Fig. 4-4) (3) For proper connection, align the union tube and flare tube straight with each other, then screw in the flare
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Do not use a spanner to tighten the valve stem Packed valve Charging port caps. Doing so may damage the valves. Depending on the installation conditions, applying excessive torque may cause the nuts to crack. Valve stem Precautions for Packed Valve Operation If the packed valve is left for a long time with the valve stem cap removed, refrigerant will leak from the valve. Therefore, do not leave the valve stem Main valve cap removed. Valve stem cap Use a torque wrench to securely tighten
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4-4. 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 pre- vent the condensation from overflowing the drain pan, keep the drain hose separate from the refrigerant tubing. Clamp (2) Wrap the armoring tape from the bottom of the Drain hose Insulated tubes outdoor unit to the top of the tubing where it enters the wall. As you wrap the tubing, overlap half of each previous tape turn. (3
