Page 3 - English; Safety Precautions; WARNING; CAUTION
1 ■ English Safety Precautions • Read these Safety Precautions carefully to ensure correct installation.• This manual classifies the precautions into WARNING and CAUTION. Be sure to follow all the precautions below: they are all important for ensuring safety. WARNING ...............Failure to follow...
Page 4 - Accessories; Indoor unit
■ English 2 Accessories – Choosing an Installation Site • Before choosing the installation site, obtain user approval. 1. Indoor unit • The indoor unit should be sited in a place where: 1) the restrictions on installation specified in the indoor unit installation drawings are met,2) both air intake ...
Page 5 - Indoor Unit Installation Drawings
3 ■ English Indoor Unit Installation Drawings The indoor unit may be mounted in any of the three styles shown here. Location for securing the installation panel. Exposed Half concealed Floor Installation Wall Installation Concealed Grid (Field supply) Mounting plate A Molding 64 644 134 (700) (600) ...
Page 6 - Installation Tips; Removing and installing front panel; Removing and installing front grille; How to set the different addresses
■ English 4 Installation Tips 1. Removing and installing front panel • Removal method 1) Slide until the 2 stoppers click into place.2) Open the front panel forward and undo the string.3) Remove the front panel. • Installation method 1) Attach the front grille and front panel after pulling the strin...
Page 7 - Exposed installation; Refrigerant piping; Boring a wall hole and installing wall embedded pipe
5 ■ English Indoor Unit Installation (1) Exposed installation 1. Refrigerant piping 1) Drill a hole (65mm in diameter) in the spot indicated by the symbol in the illustration as below. 2) The location of the hole is different depending on which side of the pipe is taken out.3) For piping, see 6. Con...
Page 8 - Drain piping; Installing indoor unit
■ English 6 3. Drain piping 1) Use commercial rigid polyvinyl chloride pipe (general VP 20 pipe, outer diameter 26mm, inner diameter 20mm) for the drain pipe.2) The drain hose (outer diameter 18mm at connecting end, 220mm long) is supplied with the indoor unit. Prepare the drain pipe picture below p...
Page 9 - Flaring the pipe end
7 ■ English Indoor Unit Installation (1) 4-2. Installation • Secure using 6 screws for floor installations. (Do not forget to secure to the rear wall.)• For wall installations, secure the mounting plate using 5 screws and the indoor unit using 4 screws. • The mounting plate should be installed on a ...
Page 10 - Connecting the refrigerant pipe; -2. Selection of copper and heat insulation
■ English 8 6. Connecting the refrigerant pipe CAUTION 1) Use the flare nut fixed to the main unit. (To prevent cracking of the flare nut by aged deterioration.)2) To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare. (Use refrigeration oil for R410A.)3) Use torque ...
Page 11 - Checking for gas leakage; Connecting the drain hose
9 ■ English Indoor Unit Installation (1) 7. Checking for gas leakage 1) Check for leakage of gas after air purging. 2) See the sections on air purges and gas leak checks in the installation manual for the outdoor unit. 8. Attaching the connection pipe • Attach the pipe after checking for gas leakage...
Page 12 - Wiring; When connecting to an HA system
■ English 10 10. Wiring , install as described in the installation manual supplied with the Multi outdoor unit. • Live the sensor securing plate, remove the front metal plate cover, and connect the branch wiring to the terminal block. 1) Strip wire ends (15mm).2) Match wire colours with terminal num...
Page 13 - Half concealed installation; Wall hole; Installation of supplemental plate for attaching main unit
11 ■ English Indoor Unit Installation (2) Half concealed installation Only items peculiar to this installation method are given here. See Exposed Installation for additional instructions. 1. Wall hole • Drill a wall hole of the size shown in the illustration on the right. 2. Installation of suppleme...
Page 15 - Concealed installation
13 ■ English Indoor Unit Installation (3) Concealed installation Only items peculiar to this installation method are given here. See Exposed Installation for additional instructions. Install the unit according to the instructions below. Failure to do so may cause lead to both cooling and heating fai...
Page 17 - Trial Operation and Testing; Trial operation and testing; Test items; Trial Operation from Remote Controller
15 ■ English Trial Operation and Testing 1. Trial operation and testing 1-1 Measure the supply voltage and make sure that it falls in the specified range.1-2 Trial operation should be carried out in either cooling or heating mode. ■ For Heat pump • In cooling mode, select the lowest programmable tem...