Page 2 - Contents; Safety Information
2 English Contents Safety Information 3 Installation Procedure 5 Step 1 Checking and preparing accessories Step 2 Choosing the installation location Step 3 Optional: Insulating the body of the indoor unit Step 4 Installing the indoor unit Step 5 Purging inert gas from the indoor unit Step 6 Cutting ...
Page 3 - English; Saf; General information; WARNING; Installing the unit; WARNING
3 English Saf e ty Inf ormation WARNING ŷ Hazards or unsafe practices that may result in severe personal injury or death. CAUTION ŷ Hazards or unsafe practices that may result in minor personal injury or property damage. ŷ Carefully follow the precautions listed below because they are essential to g...
Page 4 - – It may cause electric shock or fire due to poor; CAUTION; Make sure that you earth the cables.
4 Safety Information English Saf e ty Inf ormation ŷ After completing the installation, always carry out a functional test and provide the instructions on how to operate the air conditioner to the user. ŷ Do not use the air conditioner in environments with hazardous substances or close to equipment ...
Page 5 - Installation Procedure; way Cassette; Installation location requirements; Maintain sufficient clearance around the indoor unit.
5 Installation Pr ocedur e English Installation Procedure Step 1 Checking and preparing accessories The following accessories are supplied with the indoor unit. The type and quantity may differ, depending on the specifications. 1 way Cassette Pattern sheet A (1) Pattern sheet B (1) Insulation pipe (...
Page 9 - Step 3 Optional: Insulating the body of the indoor unit
9 Installation Pr ocedur e English Step 3 Optional: Insulating the body of the indoor unit If you install a cassette type indoor unit on the ceiling when temperature is over 27°C and humidity is over 80%, you must apply an extra 10 mm thick polyethylene insulation or a similar type of insulation to ...
Page 10 - Step 4 Installing the indoor unit; NOTE; You must install all of the suspension rods.
10 Installation Procedure Installation Pr ocedur e English Step 4 Installing the indoor unit When deciding on the location of the air conditioner the following restrictions must be taken into account. 1 Place the pattern sheet on the ceiling at the spot where you want to install the indoor unit. NOT...
Page 11 - Step 6 Cutting and flaring the pipes; Slide a flare nut on to the pipe and modify the flare.
11 Installation Pr ocedur e English 1 way Cassette Level vinyl tube Gauge of dimensions <Side view> 15 mm Ceiling Ceiling 15 mm 4 way Cassette Indoor unit Ceiling Gauge of dimensions 17 mm 20 mm Step 5 Purging inert gas from the indoor unit The indoor unit comes with nitrogen gas (inert gas) c...
Page 12 - There are two refrigerant pipes of different diameters :
12 Installation Procedure Installation Pr ocedur e English 5 Check that the flaring is correct, referring to the illustrations below for examples of incorrect flaring. Correct Inclined Damaged Surface Cracked Uneven Thickness Step 7 Connecting the assembly pipes to the refrigerant pipes There are tw...
Page 13 - Step 8 Performing the gas leak test; Step 9 Insulating the refrigerant pipes; Be sure to wrap insulation tightly without any gaps.
13 Installation Pr ocedur e English Step 8 Performing the gas leak test To identify potential gas leaks on the indoor unit, inspect the connection area of each refrigerant pipe using a leak detector for R-410A. Before recreating the vacuum and recirculating the refrigerant gas, pressurize the whole ...
Page 14 - Select the insulation of the refrigerant pipe.
14 Installation Procedure Installation Pr ocedur e English 5 Select the insulation of the refrigerant pipe. ŷ Insulate the gas side and liquid side pipe, noting the insulation thickness that must differ according to the pipe size. ŷ Standard: Less than an indoor temperature of 30°C, with humidity at...
Page 15 - Install air ventilation to drain condensation smoothly.; Install horizontally.
15 Installation Pr ocedur e English ŷ Install air ventilation to drain condensation smoothly. Air ventilation Ceiling ŷ If it is necessary to increase the height of the drain pipe, install the drain pipe straight within 300 mm from the drain hose port. If it is raised higher than 550 mm, there may b...
Page 16 - Step 11 Performing the drainage test
16 Installation Procedure Installation Pr ocedur e English Step 11 Performing the drainage test 1 Do a leak test at the connection part of the flexible hose and the drian pipe: a Connect a general hose to the connection part of the flexible hose of the indoor unit, and pour in some water. Hose Flexi...
Page 17 - phase
17 Installation Pr ocedur e English Step 12 Connecting the power and communication cables CAUTION ŷ Always remember to connect the refrigerant pipes before performing the electric connections. When disconnecting the system, always disconnect the electric cables before disconnecting the refrigerant p...
Page 18 - Prepare the following tools.
18 Installation Procedure Installation Pr ocedur e English Indoor power supply Power supply Max/Min(V) Indoor power cable 220 to 240V, 50 Hz ±10% 0.75 to 1.5 mm², 3 wires Communication cable 0.75 to 1.5 mm², 2 wires AC power: M4 screw Communication: M3.5 screw 11 13 7.5 9.0 18 13.8 7LJKWHQLQJWRUTXHN...
Page 19 - Apply heat to the contraction tube to contract it.; – Incomplete wire connections can cause electric
19 Installation Pr ocedur e English 3 Insert both sides of core wire of the power cable into the connection sleeve. ŷ Method 1 : Push the core wire into the sleeve from both sides. ŷ Method 2 : Twist the wire cores together and push it into the sleeve. Connection sleeve Connection sleeve Method 1 Me...
Page 20 - SEG4 and SEG5
20 Installation Procedure Installation Pr ocedur e English Step 14 Setting the indoor unit addresses and the installation options You cannot set both of the indoor unit addresses and the installation options in a batch: set both of them respectively. Common steps for setting the addresses and option...
Page 21 - Cool
21 Installation Pr ocedur e English Take the steps presented in the following table: Steps Remote control display 1 Set the SEG2 and SEG3 values: a Set the SEG2 value by pressing the (Low Fan) button repeatedly until the value you want to set appears on the remote control display. SEG2 b Set the SEG...
Page 24 - Heat
24 Installation Procedure Installation Pr ocedur e English Steps Remote control display 17 Set the SEG21 and SEG22 values: a Set the SEG21 value by pressing the (Low Fan) button repeatedly until the value you want to set appears on the remote control display. SEG21 b Set the SEG22 value by pressing ...
Page 25 - Reset the indoor or outdoor unit.; Setting the indoor unit addresses; Indoor Unit
25 Installation Pr ocedur e English 5 Check whether the air conditioner operates in accordance with the option values you have set: a Reset the indoor or outdoor unit. ŷ Indoor unit : Press the (Set) and (Low Fan) buttons on the remote control simultaneously for 4 seconds. ŷ Outdoor unit : Press the...
Page 26 - Setting the installation options in a batch
26 Installation Procedure Installation Pr ocedur e English CAUTION ŷ The main address must be set to a value in the range 0 to 14. If you set other values, communication error will occur. ŷ If any of SEG5 and SEG6 is set to a value in the range A to F, the main address of the indoor unit does not ch...
Page 28 - Example: When installing DPM (1 Outdoor unit with 4 indoor units); Changing the addresses and options individually; Common
28 Installation Procedure Installation Pr ocedur e English ŷ Even if you set the Use of drain pump (SEG8) option to 0, it is automatically set to 2 (the drain pump is used with 3 minute delay). ŷ If you set the Maximum filter usage time (SEG18) option to a value other than 2 and 6, it is automatical...
Page 30 - Appendix; Troubleshooting
30 English Troubleshooting Appendix Troubleshooting 1 way Cassette Abnormal conditions LED lamp display Remarks Operation Defrost Timer Fan Filter reset Blue Yellow Power reset X X X X Error of temperature sensor in the indoor unit (Open/Short) X X X X Error of heat exchanger sensor in the indoor un...
