IMPORTANT! Please Read Before Starting When Transporting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important Be careful when picking up and moving the indoor and out- part of your job to install or service the system so it operates door units.
1. General This booklet briefly outlines where and how to install the 5. Carpenter’s level air conditioning system. Please read over the entire set 6. Sabre saw or key hole saw of instructions for the indoor and outdoor units and 7.
*6" (15 cm) min. and grilles in front of or surround- ing the air conditioner in a way that may block air flow. Front View *KS1852 only AVOID: Fig. 2 direct sunlight. nearby heat sources that may affect performance of the...
2-2. Outdoor Unit Exhaust fan AVOID: Hot air heat sources, exhaust fans, etc. (Fig. 4) Heat source damp, humid or uneven locations. Outdoor unit choose a place as cool as possible. choose a place that is well ventilated. allow enough room around the unit for air intake/ Fig.
Fig. 6 Tubing can be extended in 5 directions (KS0951, KS1251 and Rear panel KS1852) as shown in Fig. 8a or 8b. Select the direction you need providing the shortest run to the outside unit. 3-2. Make a Hole (1) Place the rear panel from the indoor unit on the wall at the loca- tion selected.
(4) Using a sabre saw, key hole saw or hole-cutting drill NOTE attachment, cut a hole in the wall. See Table 4 and Hole should be made at a slight downward slant to the Fig. 10. outdoor side. Table 4 Indoor Outdoor Hole Dia.
Fig. 16a (a) Hold both corners of the air intake grille, then pull out and up to open. KS1852 (b) Pull the lower part of the grille toward you to remove. (c) Use a standard screwdriver to push up the 3 tabs to remove the grille.
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.
3-7. Recommended Wire Length and Diameter Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to WIRING SYSTEM DIAGRAM your local electrical codes. Carefully observe these reg- ulations when carrying out the installation. C0951, CL0951, C1251, CL1251 Models INDOOR NOTE OUTDOOR UNIT...
Insert the conduit connector through the opening Fig. 25a Fig. 25b from the underside of the electrical component box. KS1852 After insertion, Fit the screw at the top of the con- KS1852 Electrical duit connector into the cut-out. (Fig. 26b). Position...
Loose wiring may cause the termi- WARNING nal to overheat or result in unit mal- function. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected. When connecting each power wire to the corresponding termi- 9/32" (7 mm) (ACTUAL STRIP nal, follow the instructions “How to connect wiring to the termi-...
3-9. 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 secure- ly fasten to the 2 tabs on the lower part of the rear plate.
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. 38) 3-10. Drain Hose a) The drain hose should be slanted downward to the outdoors.
4. How to Install the Outdoor Unit Terminal Lock nut block First refer to Section 2. Installation Site Selection. 4-1. Wiring Instructions for the Outdoor Unit Access panel Regulations on wire size differ from locality to locality. For field wiring requirements, please refer to your local electrical codes.
5. Refrigerant Tubing Deburring After 5-1. Use of the Flaring Method Before 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 tubes are flared at each end and connected with flare nuts.
5-4. Connecting Tubing between Indoor and Torque wrench Outdoor Units a) Tightly connect the indoor side refrigerant tubing extend- Spanner ed from the wall with the outdoor side tubing. (Fig. 47) Indoor unit b) To fasten the flare nuts, apply specified torque as: Table 5 Outdoor unit Tube Dia.
6. Air Purging Indoor unit Air and moisture remaining in the refrigerant system have undesirable effects as indicated below. Therefore, they must be purged completely. pressure in the system rises operating current rises Outdoor unit cooling (or heating) efficiency drops moisture in the air may freeze and block capillary tubing water may lead to corrosion of parts in the refrigerant sys- Air Purging with a Vacuum Pump (for Test Run)
(5) With the vacuum pump still running, close the “Lo” knob of the manifold valve. Then stop the vacuum pump. 90 (1/4 turn) Narrow tube (6) With the accessory hex wrench, turn the valve stem on the narrow tube service valve counter- Hex wrench clockwise by 90 degrees (1/4 turn) for 10 seconds, and then turn the stem clockwise to close it again.
NOTE If the unit does not operate and the OPERATION lamp on the unit is blinking after going through the proce- Fig. 54a dure, check the wiring between the units. KS1852 Operation selector switch TEST Fig. 54b...
Basic Function of the Service Valves The basic function of the service valves are given in Table 7 below. Table 7 Narrow Tube Service Wide Tube Service Action Valve (2-Way) Valve (3-Way) O-ring Valve cap CLOSED Stem Shipping Fully OPEN Operating and test running the air conditioner...
7. Remote Control Unit Installation Position The remote control unit can be operated from either a non-fixed position or a wall-mounted position. To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places: In direct sunlight Behind a curtain or other place where it is covered...