MITSUBISHI ELECTRIC JG79B784H08 Split Type Air Conditioners Installation Guide

PARTS TO BE PROVIDED AT YOUR SITE

1 or 2

(J)| Refrigeration oil| 1
(K)| Power supply cord*1| 1

Note:

• *1 Place indoor/outdoor unit connecting wire (A) and power supply cord (K) at least 1 m away from the TV antenna wire.

This indoor unit is equipped with the built-in Wi-Fi interface.

• *3 When any 2 sides of left, right and rear of unit are clear
• *4 The manufacturing year and month is indicated on the spec name plate.

Appearance of the outdoor unit may differ from some models.

IMPORTANT NOTES
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

Drain piping for outdoor unit
< VG type only>

• Provide drain piping before indoor and outdoor pip- ing
• Connect drain hose (I) I.D.15 mm as shown in the
• Make sure to provide drain piping with a downhill grade for easy drain

NOTE
Install the unit horizontally
Do not use drain socket (1O) in cold regions. Drain may freeze and make the fan stop.
The outdoor unit produces condensate during the heating operation. Select the installation place to ensure to prevent the outdoor unit and/or the grounds from being wet by drain water or damaged by frozen drain water.

INDOOR UNIT INSTALLATION

FIXING OF INSTALLATION PLATE

• Find a structural material (such as a stud) in the wall and fix installation plate (1) horizon- tally by tightening the fixing screws (2)
• To prevent installation plate (1) from vibrating, be sure to install the fixing screws in the holes indicated in the For added support, fixing screws may also be installed in other holes.
• When the knockout is removed, apply vinyl tape to the knockout edges to prevent damaging the wires
• When bolts recessed in the concrete wall are to be utilized, secure installation plate (1) using 11 x 2O · 11 x 26 oval hole (45O mm pitch).
• If the recessed bolt is too long, change it for a shorter one available in the market

WALL HOLE DRILLING

• Determine the wall hole position
• Drill a 065 mm The outdoor side should be 5 to 7  mm lower than the indoor side.
• Insert wall hole sleeve (C).

CONNECTING WIRES FOR INDOOR UNIT

You can connect indoor/outdoor lead wire without removing the front panel.

1. Open the front
2. Remove VA
3. Remove VA
4. Pass indoor/outdoor unit connecting wire (A) from the back of the indoor unit and process the end of the connecting wire (A) to the terminal block. Be careful not to make miswiring. Fix the wire to the terminal block securely so that no part of its core is appeared, and no external force is conveyed to the connecting section of the terminal block.
5. Firmly tighten the terminal screws to prevent them from After tightening, pull the wires lightly to confirm that they do not move.
6. Secure indoor/outdoor unit connecting wire (A) and the earth wire with the VA Never fail to hook the left claw of the VA clamp. Attach the VA clamp securely.

• For future servicing, give extra length to the connecting wires
• Make earth wire a little longer than (More than 6O mm)
• Do not fold the excess wire, or cram it into small space. Take caution not to damage the wires
• Be sure to attach each screw to its correspondent terminal when securing the cord and/or the wire to the terminal block.
  Note: Do not place the wires between the indoor unit and the installation plate (1). Damaged wire could cause heat generation or wires

PIPE FORMING AND DRAIN PIPING

Pipe Forming

• Place the drain hose below the refrigerant piping
• Make sure that the drain hose is not heaved or snaked
• Do not pull the hose when applying the tape
• When the drain hose passes the room, be sure to wrap insulation material (obtainable at a store) around it
  

Rear, right, or downward piping

• Put the refrigerant piping and the drain hose together, then firmly apply piping tape (G) from the end
• Insert the piping and the drain hose into the wall hole sleeve (C), and hook the upper part of the indoor unit on the installation plate (1).
• Check if the indoor unit is hooked securely on the installation plate (1) by moving the unit to left and right
• Thrust the lower part of the indoor unit into the installation plate (1).

Drain Piping

• If the extension drain hose has to pass through a room, be sure to wrap it with commercially sold insulation
• The drain hose should point downward for easy drain flow. (Fig. 1)
• If the drain hose provided with the indoor unit is too short, connect it with drain hose (I) that should be provided at your site. (Fig. 2)
• When connecting the drain hose to the hard vinyl chloride pipe, be sure to insert it securely into the pipe. (Fig. 3)

Do not make drain piping as shown below.

Left or left-rear piping
Note:
Be sure to reattach the drain hose and the drain cap in case of left or left-rear piping. Otherwise, it could cause drops of water to drip down from the drain hose.

Note:
Be sure to reattach the drain hose and the drain cap in case of left or left-rear piping. Otherwise, it could cause drops of water to drip down from the drain hose.

1. Put the refrigerant piping and the drain hose together, then firmly apply felt tape (4) from the end.
   • Felt tape (4) overlap width should be 1/3 the tape width. Use a bandage stopper at the end of felt tape (4).
2. Pull out the drain cap at the rear right of the indoor (Fig. 1)
   • Hold the convex section at the end and pull the drain cap.
3. Pull out the drain hose at the rear left of the indoor (Fig. 2)
   • Hold the claw marked by the arrows and pull out the drain hose
4. Put the drain cap into the section to which the drain hose is to be attached at the rear of the indoor (Fig. 3)
   • Insert not sharp-edged tools such as screwdrivers into the hole at the end of the cap and insert the cap fully into the drain
5. Insert the drain hose fully into the drain pan at the rear right of the indoor unit. (Fig. 4)
   • Check if the hose is hooked securely to the projection of its inserting part at the drain
6. Insert the drain hose into wall hole sleeve (C), and hook the upper part of indoor unit on installation plate (1). Then, move the indoor unit completely to the left in order to make placing the piping in the back space of the unit easier.
7. Cut out a piece of cardboard from the shipping box, roll it up, hook it onto the back rib, and use it as a spacer to lift the indoor unit. (Fig. 5)
8. Connect the refrigerant piping with the extension pipe (B).
9. Thrust the lower part of the indoor unit into the installation plate (1).

ASSEMBLING OF CORNER BOX

• The corner boxes are stowed in the cushioning materials on the right and left sides
• Check the markings (RIGHT/LEFT) on the parts, and use the appropriate parts

1. Each right and left corner box is assembled from 2

2. Arrange the two parts so that the 2       marks align. Move 1 part about 9O degrees around the hinge point you have just created to put the parts

3. Press the base of portion with the mark to snap into place
   

4. Attach the assembled corner box to the indoor unit.

5. Assemble the corner box L in the same manner.

• When changing the part, disassemble by moving the part in a reverse direction
• The parts that were not used may be necessary in the future if the air conditioner is relocated, so ask customers to keep those parts

OUTDOOR UNIT INSTALLATION

CONNECTING WIRES FOR OUTDOOR UNIT

1. Open the service panel.
2. Loosen terminal screw, and connect indoor/outdoor unit connecting wire (A) from the indoor unit correctly on the terminal block. Be careful not to make miswiring. Fix the wire to the terminal block securely so that no part of its core is appeared, and no external force is conveyed to the connecting section of the terminal block.
3. Firmly tighten the terminal screws to prevent them from loosening. After tightening, pull the wires lightly to confirm that they do not move.
4. Connect power supply cord (K).
5. Fix indoor/outdoor unit connecting wire (A) and power supply cord (K) with the cord clamp.
6. Close the service panel securely.
   

• Make earth wire a little longer than (More than 1OO mm)
• For future servicing, give extra length to the connecting wires
• Be sure to attach each screw to its correspondent terminal when securing the cord and/or the wire to the terminal block

FLARING WORK

1. Cut the copper pipe correctly with pipe cutter. (Fig. 1, 2)
2. Completely remove all burrs from the cut cross section of pipe. (Fig. 3) .Put the end of the copper pipe to downward direction as you remove burrs in order to avoid to let burrs drop in the piping.
3. Remove flare nuts attached to indoor and outdoor units, then put them on pipe having completed burr removal. (Not possible to put them on after flaring work.)
4. Flaring work (Fig. 4, 5). Firmly hold copper pipe in the dimension shown in the table. Select A mm from the table according to the tool you use.
5. Check .
6. Compare the flared work with Fig.
7. If flare is noted to be defective, cut off the flared section and do flaring work again.

Pipe diameter (mm)

|

Nut (mm)

| A (mm)| Tightening torque
---|---|---|---
Clutch type tool for R32,

R41OA

| Clutch type tool for R22| Wing nut type tool for R22| NM| kgf cm
06.35 (1/4″)| 17| O to O.5| 1.O to 1.5| 1.5 to 2.O| 13.7 to

17.7

| 14O to

18O

09.52 (3/8″)| 22| 34.3 to 41.2| 35O to 42O
012.7 (1/2″)| 26| 2.O to 2.5| 49.O to

56.4

| 5OO to

575

015.88 (5/8″)| 29| 73.5 to 78.4| 75O to 8OO

PIPE CONNECTION

• Fasten flare nut with a torque wrench as specified in the table.
• When fastened too tight, flare nut may break after a long period and cause refrigerant leakage.
• Be sure to wrap insulation around the piping. Direct contact with the bare piping may result in burns or frostbite.

Indoor unit connection
Connect both liquid and gas piping’s to indoor unit.

• Apply a thin coat of refrigeration oil (J) on the flared ends of the pipes. Do not apply refrigeration oil on screw threads. Excessive tightening torque will result in damage on the screw.
• For connection, first align the center, then tighten the first 3 to 4 turns of flare nut.
• Use tightening torque table above as a guideline for indoor unit side union joint section, and tighten using two wrenches. Excessive tightening damages the flare section.

WARNING
To avoid risk of fire, flare connection should be installed outdoors. Reusable mechanical connectors and flared joints are not allowed indoors. When connecting the refrigerant piping by brazing, rather than using flare connections, complete all brazing prior to connecting indoor unit to outdoor unit.

Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the same manner applied for indoor unit.

• For tightening, use a torque wrench or spanner and use the same tightening torque applied for indoor unit.

WARNING
When installing the unit, securely connect the refrigerant pipes before starting the compressor

INSULATION AND TAPING

• Cover piping joints with pipe cover valves
• For outdoor unit side, surely insulate every piping including
• Using piping tape (G), apply taping starting from the entry of outdoor unit
• Stop the end of piping tape (G) with tape (with adhesive agent attached).

When piping have to be arranged through above ceiling, closet or where the temperature and humidity are high, wind additional commercially sold insulation to prevent condensation

PURGING PROCEDURES, LEAK TEST, AND TEST RUN

PURGING PROCEDURES AND LEAK TEST

• Remove service port cap of stop valve on the side of the outdoor unit gas (The stop valves are fully closed and covered in caps in initial state.)
• Connect gauge manifold valve and vacuum pump to service port of stop valve on the gas pipe side of the outdoor unit

• in the same position. Confirm that pressure gauge shows -O.1O1 MPa [Gauge] (-76O mmHg).

• Remove gauge manifold valve quickly from service port of stop valve
  WARNING
  To avoid risk of fire, make sure that there are no flammable hazards or ignition risks before opening the stop valves.

• After refrigerant pipes are connected and evacuated, fully open all stop valves on both sides of gas pipe and liquid Operating without fully opening lowers the performance and this causes trouble.

• Refer to 1-3., and charge the prescribed amount of refrigerant if Be sure to charge slowly with liquid refrigerant. Otherwise, composition of the refrigerant in the system may be changed and affect performance of the air conditioner.

• Tighten cap of service port to obtain the initial status

• Leak test

TEST RUN

• Insert power supply plug into the power outlet and/or turn on the breaker.
• Press the O. SW once for COOL, and twice for HEAT operation. Test run will be performed for 3O minutes. If the left lamp of the operation indicator blinks every O.5 seconds, inspect the indoor/ outdoor unit connecting wire (A) for miswiring. After the test run, emergency mode (set temperature 24°C) will start.
• To stop operation, press the E.O. SW several times until all LED lamps turn off. Refer to operating instructions for
• Checking the remote (infrared) signal reception
  • Press the OFF/ON button on the remote controller (3) and check that an electronic sound is heard from the indoor Press the OFF/ON button again to turn the air conditioner off.
  • Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to protect the air conditioner
    

AUTO RESTART FUNCTION

This product is equipped with an auto restart function. When the power supply is stopped during operation, such as during blackouts, the function automatically starts operation in the previous setting once the power supply is resumed. (Refer to the operating instructions for details)

Caution:

• After test run or remote signal reception check, turn off the unit with the E.O. SW or the remote controller before turning off the power Not doing so will cause the unit to start operation automatically when power supply is resumed.

To the user

• After installing the unit, make sure to explain the user about auto restart
• If auto restart function is unnecessary, it can be deactivated. Consult the service representative to deactivate the Refer to the service manual for details.

SETTING THE INSTALLATION POSITION

Be sure to set the remote controller in accordance with the installed position of the indoor unit.

Installation position:

• Left: Distance to objects (wall, cabinet, etc.) is less than 5O cm to the left
• Center: Distance to objects (wall, cabinet, etc.) is more than 5O cm to the left and right
• Right: Distance to objects (wall, cabinet, etc.) is less than 5O cm to the right

Note:

The installation position can be set only when all the following conditions are met:

• The remote controller is powered off
• Weekly timer is not set
• Weekly timer is not being edited

1. Hold down  on the remote controller for 2 seconds to enter the position setting mode.
2. Select the target installation position by pressing . (Each press of the  displays the positions in order: center — right —left )
3. Press to complete the position setting

EXPLANATION TO THE USER

• Using the OPERATING INSTRUCTIONS, explain to the user how to use the air conditioner (how to use the remote controller, how to remove the air filters, how to clean, precautions for operation, etc. ).
• Recommend the user to read the OPERATING INSTRUCTIONS carefully

CONNECTION SETUP OF THE Wi-Fi INTERFACE

**** This product is equipped with the Wi-Fi Interface as standard.
Refer to the SETUP QUICK REFERENCE GUIDE and OPERATING INSTRUCTIONS provided with the indoor unit for connection with the router.

RELOCATION AND MAINTENANCE

REMOVING AND INSTALLING THE PANEL ASSEMBLY

Removal procedure

• Insert a screwdriver deeply into the holes
• Pry off the right and left arm holders by moving the screwdriver down and towards the back wall
• Remove the safety string from the upper center of the panel assembly.
  

CAUTION
Hold the panel with your hand while detaching it to avoid injury.

Installation procedure

• Install the panel assembly following the removal procedure in reverse
• Be sure to press the positions as indicated by the arrows in order to attach the assembly completely to the unit

REMOVING THE INDOOR UNIT

Remove the bottom of the indoor unit from the installation plate.
When releasing the corner boxes, release both left and right bottom corner part of indoor unit and pull it down- ward and forward as shown in the figure on the right.

PUMPING DOWN

When relocating or disposing of the air conditioner, pump down the system following the procedure below so that no refrigerant is released into the atmosphere.

1. Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor unit.
2. Fully close the stop valve on the liquid pipe side of the outdoor unit.
3. Close the stop valve on the gas pipe side of the outdoor unit almost completely so that it can be easily closed fully when the pressure gauge shows 0 MPa [Gauge] (0 kgf/cm*).
4. Start the emergency COOL operation. To start the emergency operation in COOL mode, disconnect the power supply plug and/or turn off the breaker. After 15 seconds, connect the power supply plug and/ or turn on the breaker, and then press the E.0. SW once. (The emergency COOL operation can be performed continuously for up to 30 minutes.)
5. Fully close the stop valve on the gas pipe side of the outdoor unit when the pressure gauge shows 0.05 to 0 MPa [Gauge] (approx. 0.5 to 0 kgf/cm).
6. Stop the emergency COOL operation. Press the E.O. SW several times until all LED lamps turn off. Refer to operating instructions for details.

WARNING
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes. The compressor may burst if air etc. get into it.

This product is designed and intended for use in the residential, commercial and light-industrial environment. HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 1OO-831O, JAPAN

References

• planetaklimata.com.ua/ua/
• planetaklimata.com.ua/ua/catalog/lineup/?goodsid=1105&path=root-8-10-6-1105

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