Page 2 - CONTENTS
1 English SPLIT SYSTEM Air Conditioners Installation manual CONTENTS 1. SAFETY CONSIDERATIONS .................................................. 12. INTRODUCTION...................................................................... 23. BEFORE INSTALLATION ...............................................
Page 3 - English; Safety Precaution; INTRODUCTION; -1 Standard operation limit
English 2 • Heat exchanger fins are sharp enough to cut.To avoid injury wear glove or cover the fins when working around them. • Install drain piping to proper drainage. Improper drain piping may result in water leakage and property damage. • Insulate piping to prevent condensation. • Be careful whe...
Page 4 - -3 Electrical specifications; BEFORE INSTALLATION
3 English 2-3 Electrical specifications ( ∗ <c> in the table indicates the operating condition (shown in the previ- ous figure).) 2-4 Accessories Confirm that the following accessories are supplied. 2-5 Main components For main components and function of the main components, refer to the Engin...
Page 8 - CAUTIONS ON INSTALLATION
7 English (E) When outdoor units are installed in rows (on the rooftop, etc.) (1)When one outdoor unit is installed in each row (2)When two or more outdoor units are installed side by side The dimensional relationship between H, L and A is as shown in thetable below. 5. CAUTIONS ON INSTALLATION • Be...
Page 9 - -2 Protection of piping
English 8 NOTE • Maximum piping length between the outdoor and indoor unit is 230ft.• Installation tools: Make sure to use installation tools (gauge manifold charge hose,etc.) that are exclusively used for R410A installations to withstandthe pressure and to prevent foreign materials (e.g. mineral oi...
Page 10 - -5 Heat insulation of piping
9 English • Be careful not to let the field piping come into contact with the compres-sor terminal cover.Adjust the height of the insulation material on liquid pipe when it has the possibility of getting in contact with the terminal. Also make sure that the field piping does not touch the mounting b...
Page 11 - ELECTRIC WIRING WORK; Opening direction
English 10 • If the outdoor unit is not in operation and the total amount cannot be charged, follow the procedures for additional refrigerant charge shown below. • Make sure to use installation tools you exclusively use on R410A installations to withstand the pressure and to prevent foreign materi-a...
Page 12 - -1 Connection example of whole system wiring
11 English CAUTION <To electrician> • Do not operate the air conditioner until the refrigerant piping work is completed. (Operating the air conditioner before the refrigerant piping work is completed may damage the compressor.) • Install a ground fault circuit interrupter. (The inverter is pro...
Page 13 - -3 Power supply wiring connection procedure
English 12 7-3 Power supply wiring connection procedure WARNING • Never connect power supply wiring to the terminal block for remote controller wiring as this could damage the entire system. Install a ground fault circuit interrupter. • It is obliged to install a ground fault circuit interrupter to ...
Page 14 - -4 Transmission wiring connection procedure; TEST RUN PROCEDURE
13 English 7-4 Transmission wiring connection procedure • If an excessive force is applied while connecting a cable to the terminal block on the PC board, the PC board may be damaged. CAUTION • For low-noise operation, it is necessary to install the optional “Exter- nal control adaptor for outdoor u...
Page 15 - -1 Power on and check operation; -2 Checks in normal operation; Caution
English 14 9-1 Power on and check operation • Make sure to perform the check operation after installation. (If the air conditioner is operated using the indoor remote controller without performing the check operation, the malfunction code “U3” is dis-played in the indoor remote controller, and norma...
Page 16 - CAUTION FOR REFRIGERANT LEAKS
15 English (Check a malfunction code in the remote controller connected to the indoor unit.) • There might be a problem with the connection or transmission between the indoor unit and the remote controller.Check connections, and check for wire breakage. CAUTION <To piping technician><To ele...