APPENDIX C INSTALLATION INSTRUCTIONS CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKU CS-MKS24NKU (852-6-4190-580-00-0) A-3
For Indoor Unit INSTALLATION INSTRUCTIONS Split System Air Conditioner Contents This air conditioner uses the refrigerant R410A. NOTE Page External diameter of service port R410A: 5/16" Model Combinations IMPORTANT! Please Read Before Starting .................................. 2 1. GENERAL .......................................................... 4 1-1. Tools Required for Installation (not supplied) 1-2. Accessories Supplied with Unit 1-3. Optional Copper Tubing Kit 1-4.
IMPORTANT! Please Read Before Starting When Transporting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers. 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.
$SSO\ UHIULJHUDQW OXEULFDQW WR WKH PDWFKLQJ VXUIDFHV RI the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection. &OHDQ XS WKH VLWH DIWHU \RX ILQLVK UHPHPEHULQJ WR FKHFN that no metal scraps or bits of wiring have been left inside the unit being serviced.
1. General 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. 1-1. Tools Required for Installation (not supplied) 1. Standard screwdriver 2. Phillips head screwdriver 3. Knife or wire stripper 4. Tape measure 5.
1-5. Additional Materials Required for Installation 1. 2. Refrigeration (armored) tape Insulated staples or clamps for connecting wire (See local codes.) Putty Refrigeration lubricant Clamps or saddles to secure refrigerant tubing 3. 4. 5. Indoor unit 2. Installation Site Selection 2-1. Indoor Unit WARNING To prevent abnormal heat generation 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.
install the indoor unit more than 3.3' (1 m) away from any antenna or power lines or connecting wires used for television, 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. Table 3 Model Max. Allowable Tubing Length Per Unit (ft.) Max. Allowable Total Tubing Length at Shipment (L1+L2+L3) or (L1+L2+L3+L4) (ft.) Limit of Total Tubing Length (L1+L2+L3) or (L1+L2+L3+L4) (ft.
3. How to Install the Indoor Unit 3-1. Remove the Rear Panel from the Unit (1) Remove and discard the set screw on the rear panel. (Fig. 6) (2) Press the 2 marks on the frame cover and disengage the stationary tabs from the frame. (Fig. 7) Set screw only for transportation (3) Remove the rear panel. Fig. 6 NOTE Tubing can be extended in 5 or 6 directions as shown in Fig. 8. Select the direction you need providing the shortest run to the outside unit.
(4) Using a sabre saw, key hole saw or hole-cutting drill attachment, cut a hole in the wall. See Table 4 and Fig. 10. NOTE Hole should be made at a slight downward slant to the outdoor side. Table 4 Indoor side Hole Dia. CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKU CS-MKS24NKU 2-9/16" (65 mm) 3-5/32" (80 mm) (5) Measure the thickness of the wall from the inside edge to the outside edge and cut PVC pipe at a slight angle 1/4" (6 mm) shorter than the thickness of the wall. (Fig.
Grille Air intake grille 3-4. Removing and Installing the Grille 3-4-1. Indoor unit types (CS-MKS7NKU, CS-MKS9NKU, CS-MKS12NKU) Basically, these models can be installed and wired without removing the grille. If access to any internal part is needed, follow the steps as given below. CAUTION Fig. 16a Be sure to wear work gloves during installation to avoid being cut by the sharp aluminum fins of the heat exchanger.
3-4-2. Indoor unit types (CS-MKS18NKU, CS-MKS24NKU) Grille Air intake grille Basically, these models can be installed and wired without removing the grille. If access to any internal part is needed, follow the steps as given below. How to remove the grille (1) Grasp both ends of the air intake grille, and remove it by opening towards the front and pulling towards you. (Fig. 16a-1) Fig. 16a-1 (2) Remove the 3 screws. (Fig. 16b-1) (3) Remove the screw on the right side cover plate and open the cover.
3-5. Shape the Indoor Side Tubing (1) Arrangement of tubing by directions Frame a) Right or left tubing Cut out the corner of the right/left frame with a hacksaw or the like. (Figs. 20 and 21) Left tubing outlet b) Right-rear or left-rear tubing In this case, the corner of the frame need not be cut. (2) To mount the indoor unit on the rear panel: Fig. 20 Hang the 2 mounting slots of the unit on the upper tabs of the rear panel. (Fig. 22) Frame 3-6.
3-7. Wiring Instructions for Inter-unit Connections Rear panel (1) 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. 10" (25 cm) to extend from the wall face. (Fig. 24) Wall Plastic cover (2) Grasp both ends of the air intake grille, and remove it by opening towards the front and pulling towards you. Wiring 10" (25 cm) (3) Remove the screw on the right side cover plate and open the cover. (Fig. 25) Fig.
WARNING Loose wiring may cause the terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected. When connecting each power wire to the corresponding terminal, follow the instructions “How to connect wiring to the terminal” and fasten the wire securely tight with the fixing screw of the terminal plate. 9/32" (7 mm) (ACTUAL SIZE) STRIP SIZE How to connect wiring to the terminal a) For Indoor Unit Fig.
3-8. Mounting (1) To install the indoor unit, mount the indoor unit onto the 2 tabs on the upper part of the rear plate. (2) Hold down the air discharge outlet and press the lower part of the indoor unit until it clicks to securely fasten to the 2 tabs on the lower part of the rear plate. (Fig. 33) Push NOTE For tubing, choose either the right or left tubing direction and follow the steps below.
Left-side tubing Rear panel /HDG WKH WXELQJ DQG GUDLQ KRVH WKURXJK WKH ZDOO allowing sufficient length for connection. Then bend the tubing using a tube bender to make the attachment. (Fig. 38) Hole in wall Bent part (2) Switch the drain hose and drain cap. Fig. 38 Switching drain hose and drain cap D Wide tube Narrow tube /RFDWH WKH GUDLQ KRVH DQG WKH GUDLQ FDS )LJ 39) (b) Remove the screw fastening the drain hose on the right side, and pull out the drain hose to remove it. (Fig.
To unmount indoor unit Press the 2 marks on the lower part of the indoor unit and unlatch the tabs. Then lift the indoor unit and unmount. (Fig. 42) 3-9. Drain Hose a) The drain hose should be slanted downward to the outdoors. (Fig. 43) b) Never form a trap in the course of the hose. c) If the drain hose will run in the room, insulate the hose with insulation* so that chilled condensation will not damage furniture or floors. (Fig. 44) Push * Foamed polyethylene or its equivalent is recommended.
4. How to Test Run the Air Conditioner After turning on the power of the air conditioner, use the remote controller and follow the steps below to conduct the test run. (1) Set the remote controller in Test Run mode. (Fig. 59a) a)Press and hold the QUIET button and the 1HR. TIMER button. E 7KHQ SUHVV DQG KROG WKH $&/ 5HVHW EXWWRQ ZLWK D pointed object such as the tip of a pen. After 5 secRQGV UHOHDVH WKH $&/ EXWWRQ ILUVW ON/OFF operation button QUIET button c) Then release the QUIET and 1HR.
5. Remote Controller Installation Position The remote controller can be operated from either a non-fixed position or a wall-mounted position.
6. Address Switch Tab 6-1. Address Setting of the Remote Controller The address can be set in order to prevent interference between remote controllers when 2 indoor units are installed near each other. The address is normally set to “A.” To set a different address, it is necessary to change the address on the second remote controller. Fig. 62 NOTE Once changed, you cannot restore the original address setting of the air conditioner. (1) Switch on the power source.
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. The power and voltage are as specified. Inter-unit cables are securely inserted into the terminal block. Inter-unit cables are securely fixed.
DC1111-0
