Page 2 - Contents
2 Contents Ŷ Safety Precautions .......................................................................................................3 Ŷ Accessories ......................................................................................................................6 Ŷ Selecting the Installation ...
Page 3 - Safety Precautions; WARNING; - Toxic gas may generate when refrigerant gas contacts with heat.
3 Safety Precautions The following safety precautions must be taken when using your air conditioner. WARNING • Risk of electric shock can cause injury or death. • Disconnect all remote electric power supplies before servicing, installing or cleaning.• Installation must be done by the manufacturer or...
Page 4 - - When extension wiring is required due to power line damage, refer
4 Safety Precautions (Continued) P OWER SUPPLY LINE OR CIRCUIT BREAKER X If the power cable of this air conditioner is damaged, it must be replaced by service agent or similarly qualified persons in order to avoid a hazard. X The unit must be plugged into an independent circuit if applicable or conn...
Page 6 - Accessories
6 Accessories The following accessories are supplied with the indoor unit. The type and quantity may differ depending on the specifications. User's manual Installation manual Pattern sheet Insulation cover pipe out Insulation pipe(A) Insulation pipe(B) Washer Clamp hose Flexible hose Cable tie Sleev...
Page 7 - Selecting the Installation Location; Indoor Unit; Space requirements for installation & service
7 Selecting the Installation Location Indoor Unit X There must be no obstacles near the air inlet and outlet. X Install the indoor unit on a ceiling that can support its weight. X Maintain sufficient clearance around the indoor unit. X Make sure that the water dripping from the drain hose runs away ...
Page 8 - Drawing of the indoor unit; Name; Selecting the Installation Location (Continued)
8 Drawing of the indoor unit No. Name Description 1 Liquid pipe connection ø9.52 2 Gas pipe connection 77 220 77 : ø19.05 77 280 77 : ø22.22 3 Drain pipe connection VP25 (OD ø32, ID ø25) 4 Drain pipe connection (Option drain pump) VP25 (OD ø32, ID ø25) 5 Power supply/Communication connection 6 Air d...
Page 9 - Indoor Unit Installation
9 X Ensure that the ceiling is strong enough to support the weight of the indoor unit. Before hanging the unit, test the strength of each attached suspension bolt. X If the length of suspension bolt is more than 1.5m, it is required to prevent vibration. X If this is not possible, create an opening ...
Page 10 - Purging the Unit; Note; Connecting the Refrigerant Pipe; There are two refrigerant pipes of differing diameters:
10 Purging the Unit On delivery, the indoor unit is loaded with inert gas. All this gas must therefore be purged before connecting the assembly piping. To purge the inert gas, proceed as follows. To prevent dirt or foreign objects from getting into the pipes during installation, do NOT remove the pi...
Page 11 - Cutting/Flaring the Pipes; Carry out flaring work using flaring tool as shown below.; In case of needing brazing, you must work with Nitrogen gas blowing.
11 Cutting/Flaring the Pipes 1 Make sure that you prepared the required tools. (pipe cutter, reamer, flaring tool and pipe holder) 2 If you want to shorten the pipe, cut it using a pipe cutter ensuring that the cut edge remains at 90° with the side of the pipe. There are some examples of correctly a...
Page 12 - Leak test; To avoid condensation problems, place; T13.0 or thicker Acrylonitrile; separately around each refrigerant pipe.; Performing Leak Test & Insulation
12 LEAK TEST WITH NITROGEN (before opening valves) In order to detect basic refrigerant leaks, before recreating the vacuum and recirculating the R410A, it’s responsible of installer to pressurize the whole system with nitrogen (using a pressure regulator) at a pressure above 4.1MPa (gauge). LEAK TE...
Page 14 - Drain pipe and Drain hose Installation; Insert the flexible hose to the drain hose port.
14 Drain pipe and Drain hose Installation Care must be taken when installing the drain hose for the indoor unit to ensure that any condensate water is correctly drained outside. The drain hose can be installed to the right or left side of the base pan. 1 Unscrew the 4 tapped screws to remove the cov...
Page 15 - Drain pipe Connection; Without the drain pump; With the drain pump
15 1 Install horizontal drain pipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m. 2 Install U-trap at the end of the drain pipe to prevent a nasty smell to reach the indoor unit. 3 Do not install the drain pipe to upward position. It may cause water flow back to the unit. Drai...
Page 16 - Drain pipe and Drain hose Installation (Continued); Centralized Drainage
16 Drain pipe and Drain hose Installation (Continued) 1 Install horizontal drain pipe with a slope of 1/100 or more and fix it by hanger space of 1.0~1.5m. 2 Install U-trap at the end of the drain pipe to prevent a nasty smell to reach the indoor unit. Centralized Drainage Without the drain pump 1 I...
Page 17 - Prepare a little water about 2 liters.; Testing the drainage; Confirm that the water flows out through the drain hose.
17 Drain pan Prepare a little water about 2 liters. Pour water into the drain pan in the indoor unit as shown in figure. 1 When the drain pump is installed, operate the unit as cooling mode and check a drain pump pumping. 3 Testing the drainage Confirm that the water flows out through the drain hose...
Page 18 - Power and communication cable connection; Wiring Work; Connecting power for optional product; Optional product is not supplied by manufacturer.; OPTION; ELCB : Essential Installation
18 1 Before wiring work, you must turn off all power source. 2 Indoor unit power should be supplied through the breaker ( ELCB or MCCB+ELB ) separated by the outdoor power.ELCB: Earth Leakage Circuit BreakerMCCB: Molded Case Circuit BreakerELB: Earth Leakage Breaker 3 The power cable should be used ...
Page 19 - Rating current; Specification of electronic wire; ∑ Ai : Sum of Rating currents of each indoor unit.; Selecting compressed ring terminal
19 Unit Model Rating current AM 777 FNHDEH 7 77 220 77 3.8A 77 280 77 5.9A K Rating current Specification of electronic wire Power supply MCCB ELB or ELCB Power cable Earth cable Communication cable Max : 242V Min : 198V X A X A, 30mmA 0.1 s 2.5mm 2 2.5mm 2 0.75~1.5mm 2 K Run transmission wiring bet...
Page 20 - Example of Installation; Apply following equation.
20 Wiring Work (Continued) Example of Installation - Total power cable length L = 100(m), Running current of each units 1[A] - Total 10 indoor units were installed. 10[A] Indoor unit10 20[m] 10[m] 0[m] 9[A] 1[A] 100[m] Indoor unit2 Indoor unit1 X Apply following equation. ∑ ( Coef×35.6×L k ×i k ) &l...
Page 22 - How to connect your extended power cables
22 1. Prepare the following tools. Tools Crimping pliers Connection sleeve (mm) Insulation tape Contraction tube (mm) Spec MH-14 20xØ6.5(HxOD) Width 19mm 70xØ8.0(LxOD) Shape 2. As shown in the figure, peel off the shields from the rubber and wire of the power cable. - Peel off 20 mm of cable shields...
Page 24 - Setting an indoor unit address and installation option; The procedure of option setting; Step 1. Entering mode to set option; Step 2. The procedure of option setting
24 Setting an indoor unit address and installation option Set the indoor unit address and installation option with remote controller option. Set the each option separately since you cannot set the ADDRESS setting and indoor unit installation setting option at the same time. You need to set twice whe...
Page 26 - Step 5. Check operation
26 Setting an indoor unit address and installation option (Continued) Option setting Status 12. Setting Cool mode Press Mode button to be change to Cool mode in the OFF status. 13. Setting SEG16, SEG17 optionPress Low Fan button( ∨ ) to enter SEG16 value. Press High Fan button( ∧ ) to enter SEG17 va...
Page 27 - Option SEG1; You cannot set SEG11 and SEG12 as F value at the same time.
27 1. Check whether power is supplied or not. - When the indoor unit is not plugged in, there should be additional power supply in the indoor unit. 2. The panel(display) should be connected to an indoor unit to receive option. 3. Before installing the indoor unit, assign an address to the indoor uni...
Page 28 - 2 series installation option
28 1. Check whether power is supplied or not. - When the indoor unit is not plugged in, there should be additional power supply in the indoor unit. 2. The panel(display) should be connected to an indoor unit to receive option. 3. Set the installation option according to the installation condition of...
Page 31 - 5 series installation option
31 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 0 5 Use of Auto Change Over for HR only in Auto mode (When setting SEG3) Standard heating temp. Offset (When setting SEG3) Standard cooling temp. Offset (When setting SEG3) Standard for mode change Heating ĺ Cooling SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 1 (When setting SE...
Page 35 - Changing a particular option; Setting temperature control of discharge air; Temperature control of discharge air can be set with DMS as well.
35 Changing a particular option Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Explanation PAGE MODE The option mode you want to change The tens’ digit of an option SEG you will change The unit digit of an option SEG you will change Changed value Indication and Details Indication Details Indication Details In...
Page 36 - Final Checks and User Tips
36 To complete the installation, perform the following checks and tests to ensure that the air conditioner operates correctly. 1 Check the followings. X Strength of the installation site X Tightness of pipe connection to detect a gas leak X Electric wiring connections X Heat-resistant insulation of ...
Page 37 - Troubleshooting; Detection of errors; LED Display on the receiver & display unit; LED Display; Abnormal condition; When E108 error occurs, change the address and reset the system.; On Flickering
37 Troubleshooting X If an error occurs during the operation, an LED flickers and the operation is stopped except the LED. X If you re-operate the air conditioner, it operates normally at first, then detect an error again. Detection of errors LED Display on the receiver & display unit LED Displa...
Page 38 - EEPROM error
38 X If you turn off the air conditioner when the LED is flickering, the LED is also turned off. X If you re-operate the air conditioner, it operates normally at first, then detect an error again. X When E108 error occurs, change the address and reset the system. Ex.) When address of the indoor unit...
Page 39 - Option table; . When it is out of
39 Option table E.S.P(External Static Pressure)setting for phase control motor With its phase control motor, you can adjust the indoor unit fan speed depending on the installation condition. If the externalstatic pressure is high so that the duct becomes longer or if the external static pressure is ...
Page 40 - This product is RoHS compliant
