Mitsubishi Electric MXZ-3F54VF2 User manual

Split-type Air-Conditioner
MXZ-3F54VF2 MXZ-3F68VF2
MXZ-4F72VF2 MXZ-4F80VF2
English
INSTALLATION MANUAL

EN-1
EN
FOR INSTALLER
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.
Do not install the unit by yourself (user).
installer.
Perform the installation securely referring to the installation manual.
When installing the unit, use appropriate protective equipment and tools for
safety.
Install the unit securely in a place which can bear the weight of the unit.
not connect other electrical appliances to the circuit.
screws.
Be sure to cut off the main power in case of setting up the indoor P.C. board
or wiring works.
intermediate connection.
and do not connect many devices to one AC outlet.
When 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.
it.
Attach 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
etc.
When installing, relocating, or servicing the unit, make sure that no sub-
Do not discharge the refrigerant into the atmosphere. If refrigerant leaks dur-
ing installation, ventilate the room. Check that the refrigerant does not leak
after installation has been completed.
accordance with EN378-1.
Check that the refrigerant gas does not leak after installation has been com-
pleted.
Use appropriate tools and piping materials for installation.
When pumping down the refrigerant, stop the compressor before disconnect-
ing the refrigerant pipes.
When installing the unit, securely connect the refrigerant pipes before start-
ing the compressor.
The unit shall be installed in accordance with national wiring regulations.
Earth the unit correctly.
Be sure to install an earth leakage breaker.
remove all of the refrigerant from the air conditioner and ensure that the area
is well-ventilated.
Do not use means to accelerate the defrosting process or to clean, other than
those recommended by the manufacturer.
The appliance shall be stored in a room without continuously operating
operating electric heater).
Do not pierce or burn.
Be aware that refrigerants may not contain an odour.
Pipe-work shall be protected from physical damage.
The installation of pipe-work shall be kept to a minimum.
Compliance with national gas regulations shall be observed.
Keep any required ventilation openings clear of obstruction.
Do not use low temperature solder alloy in case of brazing the refrigerant
pipes.
Servicing shall be performed only as recommended by the manufacturer.
WARNING
Required Tools for Installation
Level
Scale
ENGLISH
CONTENTS
1. BEFORE INSTALLATION ............................................................ 1
2. OUTDOOR UNIT INSTALLATION ...............................................7
...............................8
.........9
...................................................................... 11
1. BEFORE INSTALLATION
MEANINGS OF SYMBOLS DISPLAYED ON INDOOR UNIT AND/OR OUTDOOR UNIT
WARNING

EN-2
EN
This manual only describes the installation of outdoor unit.
When installing the indoor unit, refer to the installation manual of indoor unit.
CAUTION
Install an earth leakage breaker depending on the installation place.
Perform the drainage/piping work securely according to the installation
manual.
Do not install the outdoor unit where small animals may live.
unit clean.
-
indoor unit.
— A UNIT
B - D UNIT
*5 Be careful not to crush or bend the pipe during pipe bending.
1-4. SELECTING THE INSTALLATION LOCATION
• Where rigid wall or support is available to prevent the increase of operation
sound or vibration.
boards.
Outdoor Noise level
Rated Volt-
age
Indoor/outdoor
connecting
wire per indoor unit / for difference *9 per indoor unit / for Heating
25 A 3-core
2
4-core
2
refrigerant charge
follow the instructions described below.
facing the wall.
•
the air outlet side of the outdoor unit.
Avoid the following places for installation where air conditioner trouble is
liable to occur.
• -
occurring.

EN-3
EN
•
-
appropriate ventilation.
Obstacles in front (blowing) only
When there is an obstacle in front of the
Front (blowing) side open
As long as space indicated in the
install the unit where obstacles are
behind and on the sides of the unit.
FREE SPACE REQUIRED AROUND OUTDOOR UNIT
1. Obstacles above
When there is no obstacle in front and on the
4. Obstacles in front and behind
-
ing an optional outdoor blowing
6. Service space
• When installing the unit in an area that is enclosed with walls such as a ve-
deteriorate.
each other.
5. Obstacles in front, behind and on side(s)
Service space
OK OK OK NG

EN-4
EN
1-4-1. Minimum installation area for Outdoor units
12
1.5 17
23
2.5 28
34
3.5 39
45
4.5
56
5.5 62
67
6.5 73
78
7.5 84

EN-5
EN
3
1.5 4.5
6
2.5 7.5
9
3.5 12
15.5
4.5
24
5.5 29
35
6.5 41
47
7.5 54
1.84 3.63
3.75
3.95
4.15
4.34
4.54
4.74
Floor standing

EN-6
EN
*2
Open as a rule
if the front and both
sides are open
obstacles to both sides
Open as a rule
sides and top are open
1-5. INSTALLATION DIAGRAM
ACCESSORIES
1
Drain cap 2
PARTS TO BE PROVIDED AT YOUR SITE
1
Indoor/outdoor unit connecting wire*1 1
1
Wall hole cover 1
1
1
Refrigeration oil Little
1
2 to 7
2 to 7
Wall hole sleeve 1
1
antenna wire.
used per indoor unit.
WARNING
tape around the piping.
gap.
Outdoor unit installation
Air inlet
169
Air inlet
396
Air outlet
361

EN-7
EN
Lead wire
<OUTDOOR UNIT>
Indoor/outdoor unit
connecting wire
<INDOOR UNIT>
-
pleted.
Service panel
1-6. DRAIN PIPING FOR OUTDOOR UNIT

EN-8
EN
or dust.
other refrigerant and do not allow air to remain in the lines.
hazards.
this could lead to a serious impediment to securing product safety.
ø6.35 ø9.52 ø12.7 ø15.88 ø22.2 ø25.4 ø28.58
-
Fig. 1 Fig. 2
Fig. 3 Fig. 4
Fig. 5 Fig. 6
Nut
tool for
R22
Wing nut
for R22
17 13.7 to 17.7
22 34.3 to 41.2
26
29 73.5 to 78.4
Tilted Uneven Burred
Good No good
Burr
around
Even length
all around
Inside is shining
scratches.
Flare nut
Die
Flaring tool
pipe
in the pipe.
When installing the unit, securely con-
nect the refrigerant pipes before starting
the compressor.
When there are the ports which are not
used, make sure their nuts are tightened
securely.
WARNING
CAUTION
15 ~ 25 35 ~ 42
ø6.35 ø6.35 ø6.35 ø6.35
ø9.52 ø9.52 ø9.52 *1 ø12.7
Indoor unit: S series ø6.35 ø6.35 ø6.35 ø6.35
ø9.52 ø9.52 ø12.7 ø15.88
- ø6.35 ø6.35 ø9.52
- ø12.7 ø12.7 ø15.88
• Be sure to wrap insulation around the piping. Direct contact with the bare piping
prevent condensation.

EN-9
EN
4-1. PURGING PROCEDURES AND LEAK TEST
cooling.
spec label.
2
valve on the gas pipe side of the outdoor unit.
Union
Stop valve
pipe
Indoor
unit
Stop valve with
service port Gas
pipe
Refrigerant gas
valve
with siphon
Electronic scale for refrigerant charging
Outdoor
unit
* D unit is for
4F72VF2 and
Union
Union
Union
Stop valve
for GAS
Stop valve cap
Handle
Low
Handle High
*Open
*4 to 5 turns
Stop valve
for LIQUID
valve
When attaching the control valve
Service port
Open
valve
A
When attaching the control valve to
then tighten part A. Do not tighten
core is in open position.
Service port cap
•
4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
WARNING
or ignition risks before opening the stop valves.
the operation.
<R32>
greenhouse gases
Additional charge
Total charge (
Weight
2
(
F-Gas Label