Contents Chapter Preparation for Installation ....... 4 Deciding on Where to Install the Indoor Unit ....5 Indoor Unit Installation .
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Chapter Preparation for Installation ....4 Deciding on Where to Install the Indoor Unit . . . 5 Indoor Unit Installation ....7 Purging the Unit .
Preparation for Installation When deciding on the location of the air conditioner with the owner, the following restrictions must be taken into account. General Do NOT install the air conditioner in a location where it will come into contact with the following elements: Combustible gases Saline air Machine oil...
Deciding on Where to Install the Indoor Unit Indoor Unit There must be no obstacles near the air inlet and outlet. Install the indoor unit on a ceiling that can support its weight. Maintain sufficient clearance around the indoor unit. Make sure that the water dripping from the drain hose runs away correctly and safely.
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Deciding on Where to Install the Indoor Unit (cont.) Drawing of the indoor unit Unit : mm Name Description Liquid pipe connection ø9.52 Flare ø15.88 Flare Gas pipe connection...
Indoor Unit Installation It is recommended to install the refnet joint before installing the indoor unit. Carefully remove the indoor unit from the packing case and pull out the shipping block on the motor of the unit. Shipping block Place the pattern sheet on the ceiling at the spot where you want to install the indoor unit.
Purging the unit On delivery, the indoor unit is loaded with refrigerant gas. All this gas must therefore be purged before connecting the assembly piping. To purge the inert gas, proceed as follows. Unscrew the pinch pipe at the end of each refrigerant pipe. Result: All inert gas escapes from the indoor unit.
Connecting the Refrigerant Pipe There are two refrigerant pipes of differing diameters: Liquid refrigerant port A smaller one for the liquid refrigerant A larger one for the gas refrigerant The inside of copper tube must be clean & has no dust. refrigerant port The connection procedure for the refrigerant pipes varies according to...
Cutting/Flaring the Pipes Make sure that you have the required tools available (pipe cutter, reamer, flaring tool and pipe holder). If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure that the cut edge remains at a 90° angle with the side of the pipe. Refer to the illustrations below for examples of edges cut correctly and incorrectly.
Performing Leak Test & Insulation Leak Test To check for gas leaks on the indoor unit, check the connection part of each refrigerant pipe by using a leak detector. Insulation Once you have checked that there are no leaks in the system, you can insulate the piping and hose.
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. Remove the rubber cap located on the side of the base pan depending on the situation.
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Testing the drainage Prepare a little water about 5 liter. Pour water into the base pan in the indoor unit as shown in figure. Confirm that the water flows out through the drain hose.
Connecting the Connection Cord The indoor unit is powered from the outdoor unit via the connection cord. Remove the screw on the electrical component box and remove the cover plate. Route the connection cord through the side of the indoor unit and connect the cable to terminals;...
Hatching part B : Reliable, required cares not to loose a static pressure Hatching part C : Reliable, required cares not to make noise Out of hatching : Forbidden use Model : Model : AVMDH052EA0 AVMDH070EA0 TURBO TURBO Fan Speed (CMM)
Assigning Address to Indoor Unit Before installing the indoor unit, assign an address to the indoor unit according to the air conditioning system plan. The address of the indoor unit is assigned by adjusting MAIN(SW02) and RMC(SW01) rotary switches. K1 K2 K3 K4 SW03 K5 K6 K7 K8 SW04...
Additional Functions Compensation for lost temperature in heating operation Reduces the difference between an actual room temperature and a sensed temperature by the air conditioner when heating. K5 K6 K7 K8 Switch No. Switch ON Switch OFF SW04 2°C compensation 5°C compensation Adjusting filter cleaning cycle You can adjust the cycle for filter sign indicator.
Air Filter installation (optional) Remove two screws securing on the levers under the bottom of the indoor unit. Reassemble the levers making the other side face the indoor unit as shown in figure. Turn the levers not to prevent inserting the air filter. Insert the air filter into the indoor unit.
Drain Pump Installation (optional) Accessories Drain pump & M4x12 Cable clamp Cable-tie Float switch Tapped screw Connect the cable to the electrical component box as shown at the figure. Connect the drain pump cable to yellow terminal(CN74) and the float switch to black terminal(CN51). Drain pump Float switch Screw the drain pump to the side of the indoor unit with two screws.
Troubleshooting Detection of errors If an error occurs during the operation, an LED flickers and the operation is stopped except the LED. If you re-operate the air conditioner, it operates normally at first, then detect an error again. LED Display Indicators Concealed Type Abnormal conditions...
LED Display Indicators Concealed Type Abnormal conditions Operating Blue Standard Type Self-diagnostic error Displayed on appropriate indoor (including the indoor unit not detected) unit which is operating Displayed on outdoor unit 1. Error of electronic expansion valve close 2. Error of electronic expansion valve open 3.
Explaining Operations to the Owner Before leaving the premises on which you have installed the air conditioner, you should explain the following operations to the owner, making reference to the appropriate pages in the owner’s instruction booklet. How to start and stop the air conditioner. How to select the operating mode and adjust the temperature and fan settings.