FLOOR TYPE AIR CONDITIONERS
MFZ-KJ25VE MFZ-KJ35VE MFZ-KJ50VE MFZ-KJ60VE
Installation Manual |
For INSTALLER |
•When installing multi units, refer to the installation manual of the multi unit for outdoor unit installation.
Note:
These models can be connected to the multi units, except for KJ60.
English
ENGLISH
|
CONTENTS |
|
1. |
BEFORE INSTALLATION..................................... |
1 |
2. |
INDOOR UNIT INSTALLATION............................ |
3 |
3. |
OUTDOOR UNIT INSTALLATION........................ |
6 |
4. |
PURGING PROCEDURES, LEAK TEST, AND |
|
|
TEST RUN............................................................ |
7 |
5. |
PUMPING DOWN................................................ |
7 |
Model names are indicated in 1-3.
When installing multi units, refer to the installation manual of the multi unit for outdoor unit installation.
Required Tools for Installation
Phillips screwdriver |
Wrench (or spanner) |
Level |
4 mm hexagonal wrench |
Scale |
Flare tool for R410A |
Utility knife or scissors |
Gauge manifold for R410A |
25, 35 class 65 mm/ |
Vacuum pump for R410A |
50, 60 class 75 mm |
Charge hose for R410A |
hole sawTorque wrench |
Pipe cutter with reamer |
1. BEFORE INSTALLATION
1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY
•Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing the air conditioner.
•Be sure to observe the warnings and cautions specified here as they include important items related to safety.
•After reading this manual, be sure to keep it together with the OPERATING INSTRUCTIONS for future reference.
nDo not install the unit by yourself (user).
Incomplete installation could cause fire, electric shock, injury due to the unit falling, or leakage of water. Consult the dealer from whom you purchased the unit or a qualified installer.
nPerform the installation securely referring to the installation manual.
Incomplete installation could cause fire, electric shock, injury due to the unit falling, or leakage of water.
nWhen installing the unit, use appropriate protective equipment and tools for safety.
Failure to do so could cause injury.
nInstall the unit securely in a place which can bear the weight of the unit.
If the installation location cannot bear the weight of the unit, the unit could fall causing injury.
nElectrical work should be performed by a qualified, experienced electrician, according to the installation manual. Be sure to use an exclusive circuit. Do not connect other electrical appliances to the circuit.
If the capacity of the power circuit is insufficient or there is incomplete electrical work, it could result in a fire or an electric shock.
nEarth the unit correctly.
Do not connect the earth to a gas pipe, water pipe, lightning rod or telephone earth. Defective earthing could cause electric shock.
nDo not damage the wires by applying excessive pressure with parts or screws.
Damaged wires could cause fire or electric shock.
nBe sure to cut off the main power in case of setting up the indoor P.C. board or wiring works.
Failure to do so could cause electric shock.
nUse the specified wires to connect the indoor and outdoor units securely and attach the wires firmly to the terminal block connecting sections so the stress of the wires is not applied to the sections. Do not extend the wires, or use intermediate connection.
Incomplete connecting and securing could cause fire.
WARNING (Could lead to death, serious injury, etc.)
nDo not install the unit in a place where inflammable gas may leak.
If gas leaks and accumulates in the area around the unit, it could cause an explosion.
nDo not use intermediate connection of the power cord or the extension cord and do not connect many devices to one AC outlet.
It could cause a fire or an electric shock due to defective contact, defective insulation, exceeding the permissible current, etc.
nBe sure to use the parts provided or specified parts for the installation work.
The use of defective parts could cause an injury or leakage of water due to a fire, an electric shock, the unit falling, etc.
nWhen plugging the power supply plug into the outlet, make sure that there is no dust, clogging, or loose parts in both the outlet and the plug. Make sure that the power supply plug is pushed completely into the outlet.
If there is dust, clogging, or loose parts on the power supply plug or the outlet, it could cause electric shock or fire. If loose parts are found on the power supply plug, replace it.
nAttach the electrical cover to the indoor unit and the service panel to the outdoor unit securely.
If the electrical cover of the indoor unit and/or the service panel of the outdoor unit are not attached securely, it could result in a fire or an electric shock due to dust, water, etc.
nWhen installing, relocating, or servicing the unit, make sure that no substance other than the specified refrigerant (R410A) enters the refrigerant circuit.
Any presence of foreign substance such as air can cause abnormal pressure rise and may result in explosion or injury. The use of any refrigerant other than that specified for the system will cause mechanical failure, system malfunction, or unit breakdown. In the worst case, this could lead to a serious impediment to securing product safety.
nDo not discharge the refrigerant into the atmosphere. If refrigerant leaks during installation, ventilate the room.
If refrigerant comes in contact with a fire, harmful gas could be generated.
nCheck that the refrigerant gas does not leak after installation has been completed.
If refrigerant gas leaks indoors, and comes into contact with the flame of a fan heater, space heater, stove, etc., harmful substances will be generated.
nUse appropriate tools and piping materials for installation.
The pressure of R410A is 1.6 times more than R22. Not using appropriate tools or materials and incomplete installation could cause the pipes to burst or injury.
nWhen pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running and the stop valve is open, air could be drawn in and the pressure in the refrigeration cycle could become abnormally high. This could cause the pipes to burst or injury.
nWhen installing the unit, securely connect the refrigerant pipes before starting the compressor.
If the compressor is started before the refrigerant pipes are connected and when the stop valve is open, air could be drawn in and the pressure in the refrigeration cycle could become abnormally high. This could cause the pipes to burst or injury.
nFasten a flare nut with a torque wrench as specified in this manual.
If fastened too tight, a flare nut may break after a long period and cause refrigerant leakage.
nThe unit shall be installed in accordance with national wiring regulations.
CAUTION |
(Could lead to serious injury in particular environments when operated incorrectly.) |
n Install an earth leakage breaker depending on |
If there is defect in the drainage/piping work, water |
the installation place. |
could drop from the unit, soaking and damaging |
If an earth leakage breaker is not installed, it could |
household goods. |
cause electric shock. |
n Do not touch the air inlet or the aluminum fins |
n Perform the drainage/piping work securely ac- |
of the outdoor unit. |
cording to the installation manual. |
This could cause injury. |
1-2. SELECTING THE INSTALLATION LOCATION
INDOOR UNIT
•Where airflow is not blocked.
•Where air spreads over the entire room.
•Rigid wall without vibration.
•Where it is not exposed to direct sunshine. Do not expose to direct sunshine also during the period following unpacking to before use.
•Where easily drained.
•At a distance 1 m or more away from your TV and radio. Operation of the air conditioner may interfere with radio or TV reception. An amplifier may be required for the affected device.
•In a place as far away as possible from fluorescent and incandescentlights.
In order to make the infrared remote control operate the airconditioner normally. The heat from the lights may cause deformation or the ultraviolet may cause deterioration.
• Where the air filter can be removed and replaced easily.
REMOTE CONTROLLER
•Where it is easy to operate and easily visible.
•Where children cannot touch it.
•Select the position where the indoor unit can receive the signal from the remote controller properly. Check that signals from the remote controller are surely received by the indoor unit from that position (‘beep’ or ‘beep beep’ receiving tone sounds). After that, attach remote controller holder to a pillar or wall and install wireless remote controller.
Note:
In rooms where inverter type fluorescent lamps are used, the signal from the wireless remote controller may not be received.
OUTDOOR UNIT
•Where it is not exposed to strong wind.
•Where airflow is good and dustless.
•Where rain or direct sunlight can be avoided as much as possible.
•Where neighbours are not annoyed by operation sound or hot air.
•Where rigid wall or support is available to prevent the increase of operation sound or vibration.
•Where there is no risk of combustible gas leakage.
•When installing the unit at a high level, be sure to secure the unit legs.
•Where it is at least 3 m away from the antenna of TV set or radio. Operation of the air conditioner may interfere with radio or TV reception in areas where reception is weak. An amplifier may be required for the affected device.
•Install the unit horizontally.
•Please install it in an area not affected by snowfall or blowing snow. In areas with heavy snow, please install a canopy, a pedestal and/or some baffle boards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce vibration transmitted from there.
nDo not install the outdoor unit where small animals may live.
If small animals enter and touch the electric parts inside the unit, it could cause a malfunction, smoke emission, or fire. Also, advise user to keep the area around the unit clean.
Note:
When operating the air conditioner in low outside temperature, be sure to follow the instructions described below.
•Never install the outdoor unit in a place where its air inlet/outlet side may be exposed directly to wind.
•To prevent exposure to wind, install the outdoor unit with its air inlet side facing the wall.
•To prevent exposure to wind, it is recommended to install a baffle board on the air outlet side of the outdoor unit.
Avoid the following places for installation where air conditioner trouble is liable to occur.
•Where flammable gas could leak.
•Where there is much machine oil.
•Where oil is splashed or where the area is filled with oily smoke (such as cooking areas and factories, in which the properties of plastic could be changed and damaged).
•Salty places such as the seaside.
•Where sulfide gas is generated such as a hot spring.
•Where there is high-frequency or wireless equipment.
•Where there is emission of high levels of VOCs, including phthalate compounds, formaldehyde, etc., which may cause chemical cracking.
En-1
1-3. SPECIFICATIONS
|
|
|
|
|
|
|
|
|
|
|
|
|
(KJ25, 35/KJ50, 60) |
|
|
Model |
Power supply *1 |
Wire specifications *2 |
Pipe size |
||||||||||
|
(thickness *3, *4) |
|
Pipe length and height difference |
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
||||
|
Indoor unit |
Outdoor unit |
Rated |
Frequency |
Breaker |
Power supply |
Indoor/outdoor |
Gas / Liquid |
|
Max. pipe length |
20/30 m |
|||
|
Voltage |
capacity |
(3-core) |
connecting wire |
|
|
|
|||||||
|
|
Max. height difference |
12/15 m |
|||||||||||
MFZ-KJ25VE |
MUFZ-KJ25VE |
|
|
|
|
|
|
|
ø9.52 / 6.35 mm |
|
||||
|
|
|
|
10 A |
1.0 mm2 |
|
|
Max. number of bends *5, *6 |
10 |
|||||
MFZ-KJ35VE |
MUFZ-KJ35VE |
|
|
|
|
|
|
4-core |
(0.8 mm) |
|
|
|
||
230 V |
|
50 Hz |
|
|
|
Refrigerant adjustment A *7 |
30/20 g/m |
|||||||
MFZ-KJ50VE |
MUFZ-KJ50VE(HZ) |
|
16 A |
2.0 mm2 |
2.0 mm2 |
ø12.7 / 6.35 mm |
|
|||||||
|
|
|
|
|
Insulation thickness *8, *9 |
8 mm |
||||||||
MFZ-KJ60VE *10 |
MUFZ-KJ60VE(HZ) |
|
|
|
|
20 A |
|
(0.8 mm) |
|
|||||
|
|
|
|
|
|
|
|
|
||||||
*1 |
Connect to the power switch which has |
a gap of 3 mm |
*5 |
Be careful not to |
crush or bend the pipe during pipe bend- |
*8 Insulation material : Heat resisting foam plastic 0.045 |
||||||||
|
or more when open to interrupt the source power phase. |
*6 |
ing. |
|
|
|
|
specific gravity |
|
|||||
|
(When the power switch is shut off, it must interrupt all |
Refrigerant pipe bending radius must be 100 mm or more. |
*9 Be sure to use the insulation of specified thickness. Ex- |
|||||||||||
*2 |
phases.) |
|
|
|
*7 |
If pipe length exceeds 7 m, additional refrigerant (R410A) |
cessive thickness may cause incorrect installation of the |
|||||||
Use wires in conformity with design 60245 IEC 57. |
|
|
charge is required. (No additional charge is required for |
indoor unit and insufficient thickness may cause dew drip- |
||||||||||
*3 |
Never use pipes with thickness less than specified. The |
|
pipe length less than 7 m.) |
|
|
page. |
|
|
|
|||||
*4 |
pressure resistance will be insufficient. |
|
|
|
Additional refrigerant = A × (pipe length (m) – 7) |
|
*10 Single connection only. |
|
||||||
Use a copper pipe or a copper-alloy seamless pipe. |
|
|
|
|
|
|
|
|
|
|
|
|||
1-4. INSTALLATION DIAGRAM
No obstruction
100 |
mm |
|
ormore |
100 |
mm |
|
ormore |
Be sure to use wall hole sleeve (C) to prevent indoor/ outdoor connecting wire (A) from contacting metal parts in the wall and to prevent damage by rodents in case the wall is hollow.
Wall hole |
|
|
sleeve (C) |
Wall hole cover (D) |
|
Indoor unit |
Seal the wall hole |
|
|
gap with putty (H). |
|
|
Fix the pipe to wall |
|
|
with pipe fixing |
|
|
band (E). |
|
Cut off the extra |
Pipe fixing band |
|
length. |
||
(E) |
||
|
||
|
Fixing screw |
|
|
(F) |
150 mm or below from the floor
IMPORTANT NOTES |
|
|
To comply with the requirements |
|
(KJ25, 35/KJ50, 60) |
of Australian standard AS/NZS |
|
100/500 mm or more |
3000 electrical installations (wir- |
|
|
ing rules), the electrical wiring |
|
|
required between the indoor and |
|
|
outdoor units must be installed by |
|
|
a licenced electrical contractor. |
100 |
|
|
or |
mm |
|
|
more |
100mm ormore
After the leak test, apply insulating material tightly so that there is no gap.
When the piping is to be attached to a wall containing metals (tin plated) or metal netting, use a chemically treated wooden piece 20 mm or thicker between the wall and the piping or wrap 7 to 8 turns of insulation vinyl tape around the piping.
To use existing piping, perform COOL operation for 30 minutes and pump down before removing the old air conditioner. Remake flare according to the dimension for new refrigerant.
Outdoor unit installation (KJ25, 35/KJ50, 60)
|
800/840 mm |
|
150/175 |
500 mm |
|
mm |
|
mm |
344.5/390 mm 285/330 mm |
Air inlet |
|
Air outlet |
304-325/349-371 |
|
2/4-10 mm × 21 mm slot |
40 mm |
|
Units should be installed by licensed contractor according to local code requirements.
ACCESSORIES
Check the following parts before installation.
(1) |
Drain hose* |
1 |
(2) |
Remote controller holder |
1 |
(3) |
Fixing screw for (2) 3.5 × 16 mm (Black) |
2 |
(4) |
Pipe cover |
1 |
(5) |
Band |
2 |
(6) |
Battery (AAA) for (12) |
2 |
(7) |
Indoor unit mounting bracket |
1 |
(8) |
Fixing screw for (7) 4 × 25 mm |
5 |
(9) |
Wood screw for indoor unit fixation |
4 |
(10) |
Washer of (9) |
4 |
(11) |
Felt tape (For left or left-rear piping) |
1 |
(12) |
Wireless remote controller |
1 |
(13) |
Air cleaning filter |
2 |
* Note: |
|
|
The Drain hose is connected to the unit. |
|
|
<Outdoor unit> |
|
|
|
|
|
(14) |
Drain socket (VE type only) |
1 |
|
|
|
Appearance of the |
|
|
|
|
outdoor unit may differ |
|
(KJ25, 35/KJ50, 60) |
|
from some models. |
||
350 |
|
|||
|
|
|
||
200/500 mm or more |
or |
mm |
|
|
|
more |
|
||
|
|
|
|
|
PARTS TO BE PROVIDED AT YOUR SITE |
||||
(A) |
Indoor/outdoor unit connecting wire* |
1 |
||
(B) |
Extension pipe |
1 |
||
(C) |
Wall hole sleeve |
1 |
||
(D) |
Wall hole cover |
1 |
||
(E) |
Pipe fixing band |
2 to 5 |
||
(F) |
Fixing screw for (E) 4 × 20 mm |
2 to 5 |
||
(G) |
Piping tape |
|
|
1 |
(H) |
Putty |
|
|
1 |
(I) |
Drain hose |
|
|
1 or 2 |
(or soft PVC hose, 15 mm inner dia. or |
||||
|
hard PVC pipe VP16) |
|
||
(J) |
Refrigeration oil |
1 |
||
(K) |
Power supply cord* |
1 |
||
* Note:
Place indoor/outdoor unit connecting wire (A) and power supply cord (K) at least 1 m away from the TV antenna wire.
Drain piping for outdoor unit <VE type only>
•Provide drain piping before indoor and outdoor piping connection.
•Connect drain hose (I) I.D.15 mm as shown in the illustration.
•Make sure to provide drain piping with a downhill grade for easy drain flow.
(14) 
(I)
Note:
Install the unit horizontally.
Do not use drain socket (14) 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.
En-2
2. INDOOR UNIT INSTALLATION
2-1. FIXING OF INDOOR UNIT MOUNTING BRACKET
•Find a structural material (such as a stud) in the wall and fix bracket (7) horizontally with fixing screws (8).
•To prevent bracket (7) from vibrating, be sure to install the fixing screws in the holes indicated in the illustration. For added support, fixing screws may also be installed in other holes.
|
2-2. HOLE DRILLING |
|
|
|
ø65 mm (KJ25/35) |
||||||||||
1) |
Determine the wall hole position. |
|
|
|
ø75 mm (KJ50/60) |
||||||||||
2) |
Drill a dia. 65 mm hole (dia. 75 mm for KJ50/60). The outdoor side |
|
|||||||||||||
|
|
should be 5 to 7 mm lower than the indoor side. |
Indoor |
||||||||||||
3) |
Insert wall hole sleeve (C). |
|
|
|
|||||||||||
|
|
|
side |
||||||||||||
|
HOLE POSITIONS |
|
|
|
|
||||||||||
|
|
FOR REAR OR LEFT-REAR PIPING |
FOR RIGHT DOWNWARD OR LEFT DOWN- |
||||||||||||
|
|
(The following figure is a front view |
WARD PIPING |
|
|||||||||||
|
|
of the indoor unit installation location.) |
(The following figure is a view of the bottom of |
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
the indoor unit from above.) |
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Wall
5 - 7 mm
Outdoor side
FOR LEFT PIPING FOR RIGHT PIPING
30 60 |
60 |
30 60 |
60 |
|
2-3. INDOOR UNIT PREPARATION
Remove the front panel of the indoor unit.
1)Push down the tab on the both sides of the unit to open the front panel.
2)Pull the front panel toward you to remove it.
3)Remove the 2 screws.
4)Open the rear horizontal vane.
5)Push the 2 locations on the top of the panel, and then pull the upper part of the panel toward you.
6)Remove the panel while lifting it up (slightly).
Front panel
Front panel 
Panel |
Push |
Indoor unit |
|
|
Rear horizontal vane
Indoor unit
Panel
Rear horizontal vane
En-3
Loading...