Mitsubishi Electric Mr.SLIM SFZ-M25 Installation Manual page 19

7. Electrical work
[Fig. 7-2-4] (P.8)
Ⓐ Indoor terminal block
Ⓑ Earth wire (green/yellow)
Ⓒ Indoor/outdoor unit connecting wire 3-core 1.5 mm
Ⓓ Outdoor terminal block
Ⓔ Power supply cord
① Connecting cable
2
Cable 3-core 1.5 mm , in conformity with Design 245 IEC 57.
② Indoor terminal block
③ Outdoor terminal block
④ Always install an earth wire (1-core 1.5 mm
⑤ Remote controller cable
2
Wire No × size (mm ) : Cable 2C × 0.3
This wire accessory of remote controller
(wire length : 10 m, non-polar. Max. 500 m)
⑥ Wired remote controller (option)
⑦ Power supply cord
• Perform wiring as shown in [Fig. 7-2-4] (P.8). (Procure the cable locally.)
Make sure to use cables of the correct polarity only.
• Connect the terminal blocks as shown in [Fig. 7-2-4] (P.8).
Caution:
• Use care not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confirm that they do not move.
7.3. Remote controller (wired remote controller
(option))
7.3.1. For wired remote controller
1) Installing procedures
Refer to the installation manual that comes with each remote controller for details.
2) Initial settings (Remote controller settings)
Note: Administrator password is required.
From the Main display, select Main menu>Initial setting, and make the remote
controller settings on the screen that appears.
Refer to the installation manual for the remote controller for how to set the settings.
Note:
The initial administrator password is "0000." Refer to the installation manual
that comes with each remote controller for how to change the password.
7.4. Remote controller (wireless remote controller
(option))
7.4.1. For wireless remote controller (option)
1) Installation area
• Area in which the remote controller is not exposed to direct sunshine.
• Area in which there is no near by heating source.
• Area in which the remote controller is not exposed to cold (or hot) winds.
• Area in which the remote controller can be operated easily.
• Area in which the remote controller is beyond the reach of children.
* The signal can travel up to approximately 7 meters (in a straight line) within 45
degrees to both right and left of the center line of the receiver.
2) Installing procedures
Refer to the installation manual that comes with each remote controller for details.
7.4.2. Signal Receiving Unit
1) Sample system connection
[Fig. 7-4-1] (P.9)
① Signal receiving unit wiring
② Indoor/outdoor wiring
Ⓐ Outdoor unit
Ⓑ Refrigerant address
Ⓒ Indoor unit
Ⓓ Signal receiving unit
Only the wiring from the signal receiving unit and between the remote controllers is
shown in [Fig. 7-4-1]. The wiring differs depending on the unit to be connected or
the system to be used.
For details on restrictions, refer to the installation manual or the service handbook
that came with the unit.
1. Connecting to Mr. SLIM air conditioner
(1) Standard 1:1
① Connecting the signal receiving unit
Connect the signal receiving unit to the CN90 (Connect to the wireless
remote controller board) on the indoor unit using the supplied remote
controller wire. Connect the signal receiving units to all the indoor units.
2) Installing procedures
Refer to the installation manual that comes with each remote controller for details.
2 or more
2
) longer than other cables
7.4.3. Setting
1) Setting the pair number switch
[Fig. 7-4-2] (P.9)
<Indoor controller board>
1. Setting method
Assign the same pair number to the wireless remote controller as that of the
indoor unit. If not doing so, the remote controller cannot be operated. Refer to
the installation manual that came with the wireless remote controller for how to
set pair numbers of wireless remote controllers.
Position of daisy wire on the controller circuit board on the indoor unit.
Controller circuit board on the indoor unit (reference)
[Fig. 7-4-2] (P.9)
Ⓐ CN90: Connector for remote controller wire connection
For pair number settings, the following 4 patters (A-D) are available.
Pair number Pair number on
setting pattern remote controller side
A 0
B 1
C 2
D 3~9
2. Setting example
(1) To use the units in the same room
[Fig. 7-4-3] (P.9)
① Separate setting
Assign a different pair number to each indoor unit to operate each indoor unit
by its own wireless remote controller.
[Fig. 7-4-4] (P.9)
② Single setting
Assign the same pair number to all the indoor units to operate all the indoor
units by a single wireless remote controller.
[Fig. 7-4-5] (P.9)
(2) To use the units in different rooms
Assign the same pair number to the wireless remote controller as that of the
indoor unit. (Leave the setting as it is at purchase.)
2) Setting the Model No.
① Insert batteries.
② Press the SET button with something sharp at the end.
blinks and Model No. is lighted.
MODEL SELECT
③ Press the temp button to set the Model No.
④ Press the SET button with something sharp at the end.
and Model No. are lighted for three seconds, then turned off.
MODEL SELECT
Indoor unit model
SFZ
7.5. Service menu
Note: Maintenance password is required.
Press Setting on the Main window, and select "Service" to set the maintenance
settings.
When the Service menu is selected, a window will appear asking for the password.
[Fig. 7-5-1] (P.10)
To enter the current maintenance password (4 numerical digits), move the cursor
to the digit you want to change with the [F1] or [F2] button, and set each number (0
through 9) with the [F3] or [F4] button. Then, press the [SELECT] button.
Note:
• The initial maintenance password is "9999." Change the default password
as necessary to prevent unauthorized access. Have the password available
for relevant personnel.
• If you forget your maintenance password, you can initialize the password
to the default password "9999" by pressing and holding the [F1] button for
ten seconds on the maintenance password setting screen.
• Air conditioning units may need to be stopped to make certain settings.
There may be some settings that cannot be made when the system is
centrally controlled.
7.6. Function settings
7.6.1. For wired remote controller
Make the settings for the indoor unit functions via the remote controller as
necessary.
Select "Function setting" from the Settings menu to bring up the Function setting
screen. [Fig. 7-6-1] (P.10)
Indoor controller circuit board side Point
where the daisy wire is disconnected
Not disconnected
J41 disconnected
J42 disconnected
J41 and J42 disconnected
Model No.
026
19