Mitsubishi Electric Mr.Slim SLZ-M15 User manual

Air Conditioners
SLZ-M15, M25, M35, M50, M60FA
INSTALLATIONSMANUAL
INSTALLATION MANUAL
-
INSTALLATIONSHANDBUCH
-
MANUEL D’INSTALLATION
INSTALLATIEHANDLEIDING
-
MANUAL DE INSTALACIÓN
MANUALE DI INSTALLAZIONE
MANUAL DE INSTALAÇÃO
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FOR MONTØR
DLA INSTALATORA
INSTALLATIONSMANUAL
FÖR INSTALLATÖREN
VOOR DE INSTALLATEUR
FÜR INSTALLATEURE
FOR INSTALLER
TIL INSTALLATØREN

Contents
1. Safety precautions ......................................................................................... 2
2. Selecting the installation location ................................................................... 3
3. Installation diagram ........................................................................................ 4
4. Installing the indoor unit ................................................................................. 4
5. Refrigerant piping work .................................................................................. 6
6. Drainage piping work ..................................................................................... 8
7. Electrical work ................................................................................................ 9
8. Test run ........................................................................................................ 16
9. System control ............................................................................................. 18
10. Installing the grille ........................................................................................ 18
11. Easy maintenance function .......................................................................... 21
1. Safety precautions
unit.
: Indicates a part which must be grounded.
: Be sure not to do.
After installation work has been completed, explain the “Safety Precautions,” use,
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.
Read the OPERATION MANUAL carefully before operation.
Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.
Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.
unit.
-
cation.
-
-
-
-
safety.
-
tions.
-
-
-
-
pipes.
-

2.2.
controller are surely received by the indoor unit from that position (‘beep’ or ‘beep-
or wall and set the wireless remote controller.
wireless remote controller may not be received.
1. Safety precautions
-
-
-
-
-
-

(576)
(576)
625
408
88 525
570 150
313
576 - 610
408
576 - 610
625 570 525
481
208
245
127
18952
50 - 92
10
*1
37+5
0
* Before using, check the dimensions of template and gauge, because they
* The dimensions of ceiling opening can be regulated within the range shown in
following diagram; so center the main unit against the opening of ceiling, ensuring
that the respective opposite sides on all sides of the clearance between them
becomes identical.
Outer side of main unit
Bolt pitch
Ceiling opening
Outer side of Grille
Grille
Ceiling
If setting the maintenance space for , be
sure to leave is a minimum of 700 mm.
Maintenance space
Fresh air intake
Angle
Electric component box
* Leave the maintenance space at the electric component box end.
ensure a minimum space of 25 mm.
The indoor unit should be supplied with the following accessories.
Accessory name Q’ty
Installation template 1
4
4
1
1
6
2
2
Drain socket 1
Insulation 1
7.5 - 24.57.5 - 24.5
Min. 450
Floor
7.5 - 24.57.5 - 24.5
Min. 5
Min. 2500
Min. 450
Ceiling
Grille
Obstacle
Min. 1000 mm
If setting the maintenance space for , be sure to leave is a minimum of 700 mm.
Refer to the outdoor unit installation manual.

10 tapping
screws which should be prepared locally.
wrap the duct in a heat insulate to avoid causing dew drop on the wall.
3-ø5 hole
Detail drawing of fresh air intake
Indoor unit
Ceiling surface
3-Tapping screw hole
ø73.4 cutout hole
4
Insulation
-
structors and interior decorators should be consulted for details.
in order to protect the ceiling from vibration.
foundation for securing the ends of the ceiling board.
reinforcing members.
be at least 6 cm long if the beams are separated by not more than 90 cm and their
sides must be at least 9 cm long if the beams are separated by as much as 180
Ferroconcrete structures
Secure the suspension bolts using the method shown, or use steel or wooden hang-
ers, etc. to install the suspension bolts.
Unit
Grille
Pillow
Ceiling
Rafter
Beam
Roof beam
Use inserts rated at 100-150 kg
Steel reinforcing rod
Ceiling
Suspend the main unit as shown in the diagram.
1. In advance, set the parts onto the suspension bolts in the order of the washers
2. Lift the unit to the proper height of the suspension bolts to insert the mounting
plate between washers and then fasten it securely.
failing to adhere to this range.
condensation may form and drip due to air leakage etc.
with water.
securely to fasten the main unit.
entering the main unit when the grilles are left unattached for a while or when the
Main unit
Ceiling
*B: Suspension bolt pitch (see Fig. 4-2
Mounting plate
Check using the Installation gauge
Main unit
Ceiling
Ceiling opening dimensions
37
127
+5 0
120°
120°
120°
60°
ø 100
ø 100
ø 75
15
20
70
140
186
37+5
0 208
576 - 610
A=37 +5
0
Min. 30

Indoor unit
Outdoor unit
ø6.35
SLZ-M15, M25, M35: ø9.52
SLZ-M50: ø12.7
SLZ-M60: ø15.88
Copper tubes
Good
No good
Tilted
Uneven
Burred
Burr
Spare reamer
Pipe cutter
Flare nut
Copper tube
Flaring tool
Die
Copper tube
Flare nut
Yoke
-
Model Pipe Outside diameter Min. wall
thickness
Insulation
thickness
Insulation
material
mm inch
SLZ-M15
SLZ-M25
SLZ-M35
For liquid 6.35 0.8 mm 8 mm
Heat resist-
ing foam
plastic 0.045
gravity
For gas 9.52 0.8 mm 8 mm
SLZ-M50
For liquid 6.35 0.8 mm 8 mm
For gas 12.7 0.8 mm 8 mm
SLZ-M60
For liquid 6.35 0.8 mm 8 mm
For gas 15.88 1.0 mm 8 mm
order to avoid burrs drop in the tubing.
having completed burr removal.
Pipe diameter
Dimension
B +0
-0.4
Clutch type
6.35 0 - 0.5 9.1
9.52 0 - 0.5 13.2
12.7 0 - 0.5 16.6
15.88 0 - 0.5 19.7
Firmly hold copper tube in a die in the dimension shown in the table at above.

øB
6 196 196
188
133 69
64
Refrigerant pipe and insulating material
Cross-sectional view of connection
Refrigerant pipe
Insulating material
Smooth all around
Inside is shining without any scratches
Even length all around
Too much
Tilted
Drain pipe
Ceiling
Grille
Main unit
Model Dimension
SLZ-M15
SLZ-M25
SLZ-M35
63 mm 72 mm
SLZ-M50
SLZ-M60 63 mm 78 mm
completed.
of pipe re-fabricated.
carefully following shown below.
the end of the pipe cover touches the side of the unit.
the end of the pipe cover touches the side of the unit.
Secure both ends of each pipe cover with the enclosed bands. (Attach the bands
Make sure that the slit in the pipe cover is facing upward when it is installed.
all piping connections between indoor and outdoor unit have been completed, vacuum-
purge air from system through the service port for the stop valve on the outdoor unit.
After completing procedures above, open outdoor unit stop valves stem fully. This
completes connection of refrigerant circuit between indoor and outdoor units. Stop
valve instructions are marked on outdoor unit.
section.
Flare nut tightening torque
Copper pipe O.D. Flare nut O.D. Tightening torque
ø6.35 17 14 - 18
ø9.52 22 34 - 42
ø12.7 26 49 - 61
ø15.88 29 68 - 82
R0.4 - R0.8
45°± 2°
90°± 0.5°
Cracked
Uneven
Bad examples

30 30 30 ,
downward slope.
Correct piping Support metal
Air bleeder
Raised
Odor trap
Grouped piping
Make it as large as possible
Indoor unit
Up to 850 mm
5. Insulate the drain port with insulating material, then secure the material with a
Main unit
Insulating material
Insertion margin
Matching Drain socket
Max. 20 m
1.5–2 m
Max. 150 mm

Indoor unit model SLZ-M
(mm2
Indoor unit-Outdoor unit *1
Indoor unit-Outdoor unit earth *1 1 × Min. 1.5
Indoor unit earth 1 × Min. 1.5
Remote controller-Indoor unit *2
Circuit rating
*3 —
Indoor unit-Outdoor unit S1-S2 *3
Indoor unit-Outdoor unit S2-S3 *3
Remote controller-Indoor unit *3
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
S1
S2
L
N
1
2
S1
S2
S3S3
AB C
D
E
F
G
S1
S2
L
N
1
2
S1
S2
S3
1
2
S1
S2
S3S3
1
2
S1
S2
S3
1
2
S1
S2
S3
D
E
F
G G G G
AB C
A Outdoor unit power supply
B Earth leakage breaker
D Outdoor unit
F Remote controller
G Indoor unit
*1. Max. 45 m
If 2.5 mm2 used, Max. 50 m
If 2.5 mm2 used and S3 separated, Max. 80 m
*2. Max. 500 m
2.
A Outdoor unit power supply
B Earth leakage breaker
D Outdoor unit
F Remote controller
G Indoor unit
1:1 System

15
Be sure to connect the remote
locations shown in the diagram.
Secure with a band
location shown in the diagram
Secure with a band
at the location shown in the
diagram
(Remote controller
Cable strap
12
CN5Y
CN90 CN4Z
Electric component cover
Electric component box
Entry for Indoor-Outdoor connecting cable
Entry for wired remote controller cable
Cable clamp
Indoor controller
Earth cable
Cable strap
1. Loosen the two screws securing the electric component cover, and then slide and
remove the cover.
2. Route the wires along the wiring routes and through the wire inlets in the electric
component box.
cable to the terminal block.
4. Secure the wires with the cable straps inside the electric component box.
Secure the wires with cable straps as cushioning components so that no stress is
applied to the connecting sections of the terminal block when tension is generated.
5. Install the electric component cover.
Make sure that the wires do not get pinched.
6. Secure the wires with the cable straps outside the electric component box.

Between ribs
Before installing the grille, connect the junction wires included with the grille acces-
sories and place them in the connector box.
Remove the two screws securing the wire cover of the main unit, and then open
the cover.
Route the wires of the i-See sensor and signal receiver through the wire inlets in
the electric component box as shown in the diagram and around the bushings on
secure the grille junction wire and the wires of the i-See sensor and signal receiver
with the clamp.
Remove the one screw securing the connector box cover, and then open the cover.
Place the junction wire connector in the connector box.
Install the wire cover and connector box cover.
Connector box cover
Connector box
Band

Refer to the installation manual that comes with each remote controller for details.
If two remote controllers are connected, set one to “Main” and the other to “Sub”.
For setting procedures, refer to “Function selection of remote controller” in the
operation manual for the indoor unit.
Attach the remote controller holder to the desired location using 2 tapping screws.
Place the lower end of the controller into the holder.
Remote controller Display panel Receiver
degrees to both right and left of the center line of the receiver.
Insert batteries or press the button with something sharp.
[CLOCK] and [:] blinks.
Press the button with something sharp.
Press the button to set the time.
Press the button to set the Day.
Press the button with something sharp at the end.
[CLOCK] and [:] lighted.
The following settings can be made in the initial setting mode.
Item Setting Fig. 7-10
Temperature unit
Time display
AUTO mode
Pair No. 0–3
Backlight
1. Press the button to stop the air conditioner.
2. Press the button .
The Function setting screen will be displayed and the function No. will blink.
Press the button to change the function No.
3. Check that function No. “1” is displayed, and then press the button .
Press the button .
Each time the button is pressed, the setting switches between and .
: The temperature is displayed in degrees Celsius.
: The temperature is displayed in degrees Fahrenheit.
Press the button .
Each time the button is pressed, the setting switches between
and .
: The time is displayed in the 12-hour format.
: The time is displayed in the 24-hour format.
Press the button .
Each time the button is pressed, the setting switches between
and .
: The AUTO mode operates as the usual automatic mode.
: The AUTO mode operates using dual set points.
Press the button .
Each time the button is pressed, the pair No. 0–3 changes.
Pair No. of wireless remote controller Indoor PC board
0 Initial setting
1 Cut J41
2 Cut J42
3 Cut J41, J42
Press the button .
Each time the button is pressed, the setting switches between and
.
: The backlight comes on when a button is pressed.
: The backlight does not come on when a button is pressed.

Select “Service” from the Main menu, and press the [SELECT] button.
button.
[F1]
through [F4] buttons, and then press the [SELECT]
rent setting.
[SELECT] button is pressed, the target indoor unit will start fan opera-
tion. If the unit is common or when running all units, all indoor units for the se-
lected refrigerant address will start fan operation.
appears highlighted. Non-highlighted items indicate that no function settings
are made. Screen appearance varies depending on the “Unit No.” setting.
[F1] or [F2] button to move the cursor to select the mode number, and
change the setting number with the [F3] or [F4] button.
[SELECT] button to send the set-
ting data from the remote controller to the indoor units.
Function setting screen.
F1 F2 F3 F4
Service menu
Cursor
Main menu:
Test run
Input maintenance info.
Function setting
Check
Self check
F1 F2 F3 F4
Function setting
Cursor Address
Monitor:
Ref. address
Unit No. Grp./1/2/3/4/All
F1 F2 F3 F4
Function setting
Cursor Cursor
Request:
Ref. address
Mode 1
Mode 2
Mode 3
Mode 4
Grp.
F1 F2 F3 F4
Function setting
Cursor Cursor
Request:
Ref. address
Mode 7
Mode 8
Mode 9
Mode 10
Unit # 1
F1 F2 F3 F4
Function setting
Ref. address
Sending data
Going to the function select mode
Press the button between of 5 seconds.
Press the
Direct the wireless remote controller toward the receiver of the indoor unit and
press the button.
Setting the unit number
Press the button to set unit number
Direct the wireless remote controller toward the receiver of the indoor unit and
press the button.
Select a mode
Press the button to set Mode number
Direct the wireless remote controller toward the receiver of the indoor unit and
press the button.
Selecting the setting number
Use the button to change the Setting number
Direct the wireless remote controller toward the receiver of the indoor unit and
press the button.
To select multiple functions continuously
Repeat select and to change multiple function settings continuously.
Complete function selection
Direct the wireless remote controller toward the sensor of the indoor unit and press
the button.

Select unit number 00 [table 1]
Mode Settings Mode no. Setting no. Initial setting setting
Power failure automatic recovery Not available 01 1
Available *1 2 *2
Indoor temperature detecting Indoor unit operating average
02
1
Set by indoor unit’s remote controller 2
Remote controller’s internal sensor 3
Mode Settings Mode no. Setting no. Initial setting setting
Filter sign 100Hr
07
1
2500Hr 2
3
Fan speed Silent
08
1
Standard 2
High ceiling 3
Not setting
11
1
Draft-less setting (vanes angle setup 2
Downward setting (vanes angle setup 3
3D i-See sensor positioning *3 Position
12
1
(Position 2
Position 3
Fan speed during the cooling thermostat is OFF Setting fan speed
27
1
Stop 2
Extra low 3
*2 Power failure automatic recovery initial setting depends on the connecting outdoor unit.
-
air conditioner.
Reset 1
horizontal
2 3 4 5
Electric component box
Outlet No. 1
Outlet No. 3 Outlet No. 2
Outlet No. 4
Remote controller setting
-
tion setting of remote controller.
Fixed setting
in particular direction.
Downward

F1 F2 F3 F4
Manual vane angle
Manual vane angle
Select:
Setting
Outlet Angle
Navigating through the screens
..........[MENU] button
.....[RETURN] button
The current vane setting will appear.
Select the desired outlets from 1 through 4 with the [F1] or [F2] button.
-
Select the desired setting.
* Draft reduction
the “Step 1” setting in order to reduce a drafty feeling. The draft reduction can be
set for only 1 vane.
Press the [SELECT] button to save the settings.
A screen will appear that indicates the setting information is being transmitted.
The setting changes will be made to the selected outlet.
transmission is completed.
Make the settings for other outlets, following the same procedures.
No setting
Step 3
Draft
reduction*
Step 1
Step 4
All outlets
Step 2
Step 5
F1 F2 F3 F4
Manual vane angle
Input display:
Cur. Address Check
Ref. address
Unit No.
Identify unit Check button
Change the “Unit No.” in order and check each unit.
Press the [F2] or [F3] button to change the “Unit No.” to the unit that you want
to check, and then press the [F4] button.
the current state of the air conditioner.
remote controller.
-
tion from the beginning.
exist at this refrigerant address.
Change the “Ref. address” to the next number.
F1 F2 F3 F4
Manual vane angle
Return:
No communication
Check Unit state.
F1 F2 F3 F4
Manual vane angle
Return:
Ref. address
Unit No.
Function setting for unit
with vane fully open.

-
-
Step 1
board uses a digital display, [- ] and [ -] will be displayed alternately every second.
If the operations do not function correctly after the procedures in step 2 and thereafter are performed, the following causes should be considered and eliminated if they
are found.
Cause
< > indicates digital display.
cannot be operated.
After “startup” is displayed, only green lights
up. <00>
-
played for 3 minutes, then error code is displayed.
1,
S2, S3
No display appears even when remote controller
operation switch is turned on. (Operation lamp
wrong for S1, S2, S3
After “startup” is displayed, only green lights
up. <00>
Display appears but soon disappears even when
remote controller is operated.
After “startup” is displayed, only green lights
up. <00>
The test run operation starts, and the Test run operation screen is displayed.
F1 F2 F3 F4
Cool
Pipe
Auto
Switch disp.
Mode Fan
RemainTest run
F1 F2 F3 F4
unem ecivreS
rosruC
:unem niaM
Test run
Input maintenance info.
Function setting
Check
Self check
F1 F2 F3 F4
Test run menu
Cursor
Service menu:
Test run
Drain pump test run
F1 F2 F3 F4
Remain
Vane
Cooling mode: Check that cool air blows from the unit.
Heating mode: Check that warm air blows from the unit.
Press the [RETURN] button to return to the Test run operation screen.
If the vanes do not move, check that the junction wire connectors are connected
securely and the connector colors match.
The speed of the outdoor unit fan is controlled in order to control the performance of the unit. Depending on the ambient air, the fan will rotate at a slow speed and will keep
not a problem.

Note: If an error is displayed on the remote controller, see the table below.
[Output pattern A] Errors detected by indoor unit
controller
Symptom Remark
INDICATOR lamp blinks (Num- Check code
1 P1 Intake sensor error
2P2
P9
3 E6, E7
4 P4
5P5 Drain pump error
PA Forced compressor error
6 P6
7 EE Communication error between indoor and outdoor units
8 P8 Pipe temperature error
9 E4 Remote controller signal receiving error
10 — —
11 Indoor unit fan motor error
12
14 PL Refrigerant circuit abnormal
No sound E0, E3 Remote controller transmission error
No sound E1, E2 Remote controller control board error
No sound – – – – No corresponding
controller
Symptom Remark
INDICATOR lamp blinks (Num- Check code
1 E9
For details, check the LED
display of the outdoor controller
board.
2 UP Compressor overcurrent interruption
3 U3, U4
14 PL or Others Abnormality of refrigerant circuit or other errors
there are no error records.
refrigerant address is incorrect.
Blink of operation lamp
Check code displayed in the LCD.
OPERATION IN-
DICATOR lamp
blinking pattern
Beep Beep Beep Beep Beep Beep Beep
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
· · · Repeated
check code in the following table
nth 1st 2nd 3rd 1st 2nd
Self-check
starts
(Start signal
Beeper sounds
[Output pattern B]
OPERATION IN-
DICATOR lamp
blinking pattern
Beep Beep Beep Beep Beep Beep Beep
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 sec.
· · · Repeated
check code in the following table
nth
1st 2nd 3rd 1st 2nd
Self-check
starts
(Start signal
Beeper sounds
[Output pattern A]
Indicates whether control power is supplied. Make sure that this LED is always lit.
Indicates whether power is supplied to the wired remote controller. The LED is lit only for the indoor unit that is connected
to the outdoor unit that has an address of 0.
Indicates whether the indoor and outdoor units are communicating. Make sure that this LED is always blinking.

from joints.
board in the electrical component box is set to ON.
Be sure to turn it back to the former state after work.
Refer to the outdoor unit installation manual.
Drain plug
Pour water through outlet
Be careful not to spray water into
the drain pump mechanism.
Accessory name Q’ty Remark
Grille 1
Screw with washer 4
Gauge 1
Junction wire for signal re-
ceiver 1Included when equipped with the signal receiver.
Junction wire for i-See sensor 1 Included when equipped with the
i-See sensor.
Fastener 2 Included when equipped with the
signal receiver.
Fastener 2 Included when equipped with the
i-See sensor.
1Included when equipped with the
wireless remote controller.
Remote controller holder 1 Included when equipped with the
wireless remote controller.
LR6 AA batteries 2 Included when equipped with the
wireless remote controller.
3.5 × 16 tapping screws 2 Included when equipped with the
wireless remote controller.
Turn on the power to the unit at least 12 hours before the test run.
Press the
Press the button.
Press the button to activate cool mode, then check whether cool air is
blown out from the unit.
Press the button to activate heat mode, then check whether warm air is
blown out from the unit.
Press the button and check whether the fan speed changes.
Press the button and check whether the auto vane operates properly.
Press the button to stop the test run.
steps to .

indicated by the arrow to remove the corner panel.
Grille
Corner panel
Screw
<Hook is in the raised position>
Main unit hook
<Grille hook>
grille.
the corners of the main unit, latch the two hooks on the grille onto the drain pan
* Make sure that there are no gaps between the main unit and the panel or the panel
Main unit
Electric component box
Grille
Ceiling
Make sure that there are no gaps.
Temporarily hanging hooks on the panel
relative to the ceiling. If the unit is not properly positioned in the ceiling, there may
-
rectly.
576 576 - 610 610
to adhere to this range.
Main unit
Ceiling
Ceiling opening dimensions
to open the intake grille.
* Do not unlatch the hook for the intake grille.
from the grille as indicated by the arrow .
Intake grille
Grille
Intake grille levers
Grille hook
Hole for the grille’s hook
576 - 610
A=37 +5
0

Remove the one screw securing the connector box cover, and then open the cover.
Securely connect the junction wire connector of the vane motor and the panel vane
There are two vane motor connectors: one blue connector and one orange con-
nector. Make sure that the connector colors match when connecting them.
Close the connector box cover.
Connector box cover
Connector box
Securing screw
Junction connector
Band
-
corners of the panel and install them.
and signal receiver in the connector box.
as shown in the diagram so that there is no slack in the wires, and then cut off the
panel.
-
i-See sensor
Signal receiver
Fastener
i-See sensor
or signal
receiver