Mitsubishi Electric MAC-399IF-E User manual

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M-NET Interface
Model MAC-399IF-E
[FOR INSTALLER]
INSTALLATION MANUAL
[FÜR INSTALLATEURE]
INSTALLATIONSHANDBUCH
[POUR L’INSTALLATEUR]
MANUEL D’INSTALLATION
[FÖR INSTALLATÖREN]
INSTALLATIONSMANUAL
[VOOR DE INSTALLATEUR]
INSTALLATIEHANDLEIDING
[PER L’INSTALLATORE]
MANUALE DI INSTALLAZIONE
[PARA EL INSTALADOR]
MANUAL DE INSTALACIÓN
[PARA O INSTALADOR]
MANUAL DE INSTALAÇÃO
[TIL INSTALLATØREN]
INSTALLATIONSMANUAL
[°π∞ ∞À∆√¡ ¶√À ∫∞¡∂π ∆∏¡ ∂°∫∞∆∞™∆∞™∏]
E°XEIPI¢IO O¢H°IøN E°KATA™TA™H™
[MONTÖR ‹Ç‹N]
MONTAJ ELK‹TABI
[ДЛЯ УСТАНОВИТЕЛЯ]
РУКОВОДСТВО ПО УСТАНОВКЕ
[ ]
[ ]

2
1. Safety Instructions
• Read all Safety Instructions before using this device.
• This manual contains important safety information. Be sure to comply with all instructions.
• After installing the Interface, provide this Installation Manual to the user.
Instruct users to store their room air conditioner Instruction Manual and Warranty in a safe location.
Warning
(Improper handling may have serious consequences, including injury or death.)
■Users should not install the Interface themselves.
Improper installation may result in fire, electric shock, or damage/water leaks if the Interface unit falls. Consult the retailer or
specialty store where you purchased the unit for referral to an installer.
■The Interface should be securely installed in accordance with the enclosed Installation Instructions.
Improper installation may result in fire, electric shock, or damage/water leaks if the Interface unit falls.
■The unit should be mounted in a location that can support its weight.
If installed in an area that cannot support the unit, the Interface unit could fall and cause damage.
■Securely attach the electrical component cover to the Interface unit.
If the electrical component cover of the Interface unit is not securely attached, dust or water penetration could occur,
resulting in a fire or electric shock.
■Mitsubishi components or other designated components should be used for installation.
Improper installation may result in fire, electric shock, or damage/water leaks if the Interface unit falls.
■When performing electrical work, adhere to the Technical Standards Regarding Electrical Equipment and the Inte-
rior Wiring Standards, follow the instructions provided in the Instruction Manual, and be sure to use a dedicated
circuit.
Inadequate circuit capacity or improper installation could result in a fire or electric shock.
Contents
1. Safety Instructions .......................................................................................................................... 2
2. Before Installation ........................................................................................................................... 3
3. Mounting the M-NET Interface Unit ................................................................................................ 4
4. Setting the Switches ....................................................................................................................... 5
5. Connecting the M-NET Interface to an RAC ................................................................................... 6
6. Connecting the M-NET Interface, the Power Supply, and the ME Remote Controller .................... 7
7. Notes Regarding Use ..................................................................................................................... 8
8. Table of RAC Functions Activated from the ME Remote Controller/System Controller .................. 9
9. Specifications.................................................................................................................................. 9
About the M-NET Interface
The M-NET Interface is not compatible with all RACs.
Before installation, confirm that your RAC is compatible with this device.

3
2. Before Installation
2.1. How to Use the M-NET Interface
Caution
When using a system controller for a packaged air conditioner (PAC), you cannot register a packaged air conditioner
(PAC) and a room air conditioner (RAC) in the same group.
Be sure to register any RACs separately.
■Functions
Centralized and individual management of RACs (including housing air conditioners) using M-NET(*).
* A type of packaged air conditioner control
■Related Products Sold Separately
•ME Remote Controller PAR-F27MEA
•Centralized Controller G-50A
•System Remote Controller PAC-SF44SRA
•ON/OFF Remote Controller PAC-YT40ANRA
•Schedule Timer (M-NET) PAC-YT34STA
•Power supply unit PAC-SC50KUA
■Sample System Configuration
Sample configuration of a system using a centralized controller
1Centralized controller
2Power supply unit
3Packaged air conditioner system
4M-NET Interface
5RAC
6ME Remote Controller
* The number of units that can be connected to the
centralized controller (G-50A) is max. 50, including
packaged air conditioners and RACs. The wiring
from the M-NET Interface to the centralized
controller can have a maximum length of 500 m.
The wiring from the M-NET Interface to the ME
Remote Controller can have a maximum length of
10 m.
For details, see the MELANS Catalog and the
instruction manuals for the Centralized Controller
and ME Remote Controller.
2.2. Accessory (check parts against the illustration provided)
Before installing the device, make sure you have all the necessary parts.
■Accessory
1Interface unit 1
2Mounting brackets 1
3Screws (short) for mounting 23.5×12 4
4Cushioning material 1
5Cord clamp for mounting (small) 2
6Mounting cord clamp (large) 2
7Screws for mounting 5and 63.5×12 2
8
Screw for mounting 5and 64×10
1* Use this when mounting cord clamp to and around
RAC.
9
Screw for mounting 5and 64×16
1* Use this when mounting cord clamp together with the
parts of RAC.
0Fasteners (for joining the lead wires) 5
ACord clamp for wiring 5
BScrews (black) for mounting A3.5×16 5
CInterface case mounting screws (black) 3.5×12 2
■Items to Prepare at the Installation Site
AConnection wiring (centralized controller)
Shield wiring CVVS/CPEVS
BConnection wiring (for connecting the ME Remote Controller)
Remote control wires (2-core sheath wire 0.3 mm2)
Related parts sold separately
C* Prepare the necessary number of parts sold separately as needed
for your system.
13
2
6
6
4
4
5
5
* CPEVS; PE insulated PVC jacketed shielded communication cable
* CVVS; PVC insulated PVC jacketed shielded control cable
PE: Polyethylene PVC: Polyvinyl chloride

4
3. Mounting the M-NET Interface Unit
The M-NET Interface unit should be placed in a location where the connecting cable from the interface can reach an indoor unit.
The device will not function properly if the connecting cable is extended so the connecting cable should not be extended.
Mount the interface unit securely to a pillar or wall using 2 or more screws.
Mounting screws 3
■When Using Wall Mounting Brackets 2
1
Attach the wall mounting brackets 2to the interface unit
1using 2 mounting screws 3.
Mounting screws B
Interface unit 1Wall mounting
brackets 2
Mounting
screws 3
Cord clamp for
wiring A
■When Mounting Directly to a Wall
Mount the interface unit 1case to the wall using the mounting
screws 3.
* When mounting the interface unit 1using a cushioning
material 4, be sure to mount it in a location where it will not
fall.
Interface case
mounting screws C
Mounting
screws 3
Cushioning material 4
Interface unit 1
2
Mount the unit to a pillar or wall using 2 mounting screws 3.
When mounting the interface unit 1inside a ceiling
or wall, install an access door to facilitate mainte-
nance.
When the interface unit 1is mounted
above an indoor RAC unit, it should be
positioned 40 mm or more away from the
unit to ensure that ceiling grills can be
removed.
40 mm or more
Attach the interface unit 1connecting cable here.
Store extra connecting cable in the ductwork space
behind the indoor RAC unit.
* If there is any slack in the connecting cable, use a
fastener 0to keep it in place.

5
4. Setting the Switches
If the system is not configured correctly, the unit will not function properly.You may be unable to control the functions of the RAC
from the System Controller/ME Remote Controller or functions not available on your RAC could appear on the System Controller/
ME Remote Controller display. You should therefore ensure that the system is properly configured before connecting the power
supply.
■SW500 No. 1, No. 2 - Not in use
These should be set to OFF (if set to ON, the device will not communicate properly with the System Controller).
■SW500 No. 3 - Power On/Off Settings
This setting indicates whether the RAC should be turned off or on when power is supplied to the RAC or M-NET Interface.
Turn on with power No
[Unit remains off when the power is supplied.]
■SW500 No. 4 - Availability of RAC purifier or fan mode
If there is no “Purifier” button on the wireless remote control, and if the word “Fan” does not appear when the “Mode” button is
pressed, the purifier and fan modes are not available (set to OFF).
Turn on with power Yes
[Unit turns on when the power is supplied.]
Has a purifier or fan mode
Does not have a purifier or fan mode
ON
Does have an auto op-
eration mode
Does not have a fan os-
cillation setting
Does not have a fan di-
rection setting
Cooling unit only
■SW500 No. 5–No. 8 - RAC Function Check
Function description
Availability of automatic op-
eration mode (a mode that al-
lows the air conditioner to de-
termine whether to select
cooling or heating).
Availability of a fan oscillation
setting
Availability of a fan direction
setting
Availability of a heating mode
SW500
No. 5
No. 6
No. 7
No. 8
How to check a function
If “Auto” is not displayed when you push the “Mode” but-
ton on the wireless remote control, the auto operation
mode is not available (OFF).
If “Oscillate” is displayed when you push the “Fan Direc-
tion” button on the wireless remote control, the fan os-
cillation setting is available (OFF). (If there is no “Fan
Direction” button, the setting is OFF.)
If there is a Fan Direction button on the wireless remote
control, the fan direction setting is available (OFF).
If “Heat” appears when you push the “Mode” button on
the wireless remote control, the unit is a model that of-
fers both cooling and heating (OFF).
OFF
Does not have an auto
operation mode
Has a fan oscillation set-
ting
Has a fan direction set-
ting
Dual cooling and heating
model
■SW510, SW501 - Address settings
Specifies the address settings for centralized management (address settings can be set from 01–50).
SW510 sets the 10s position of the address and SW501 sets the 1s position of the address.
For example, to set a unit to the address 25, set SW510 to “2” and SW501 to “5”.
1s position
Self-Address
10s position

6
5. Connecting the M-NET Interface to an RAC
Connect the M-NET Interface board to the RAC indoor control board.
Connect the connecting cable that comes with the
M-NET Interface unit to the connector CN105 on
the indoor control board.
RAC
Indoor control board
Interface unit 1
SW510
SW501
SW500
■Position of SW500, SW501, SW510

7
6. Connecting the M-NET Interface, the Power Supply, and the ME Remote Controller
•When connecting the unit to a system controller or ME Remote Controller, connect the transmission line of the M-NET to the
control signal terminal.
Connect the 2-core connection wrings Ato A1/B1 or A2/B2 (they can be connected to either).
•Cross the shield portion of each connecting wire using the S terminal only when cross wiring the connection wires.
•When connecting the connection wrings Aand the ME Remote Controller connection wrings Bto the terminal board, there is
no need to worry about polarity.
When the connection wrings Aare not cross-wired When the connection wrings Aare cross-wired
1Shield
2Connection wirings A
(M-NET transmission wire)
3ME Remote Controller
(only when needed)
Bare wire size
•After completing the wiring, securely affix a cord clamp to each electrical wire.
1
2
1
1
2
3
1Screws
2Cord clamp (large)
3Cut with nippers at the notches.
Make sure the cut surface is free of any burr so that the
connection wire dose not get damaged.
Caution
•Electrical work should be performed in accordance with the Technical Standards Regarding Electrical Equipment
and the Interior Wiring Standards.
•Connection wiring and remote control wiring should be located as far away from other electrical wiring as possible.
Placing them too closely together could cause a malfunction.
When the connection wrings Aare cross-wired
A1 B1 A2 B2 S
2
3
A1 B1 A2 B2 S
22
3
1

8
7. Notes Regarding Use
Please read this information carefully before attempting a test run.
The following control information should be thoroughly explained and provided to the users of this device. (Please provide these
instructions to the user once the installation is complete.)
* This M-NET Interface operates RACs using the controls of a packaged air conditioner, but there are several limitations imposed
as a result of the functional differences between RACs and packaged air conditioners.
1. When operating the system using a system controller or ME Remote Controller, these operations will not appear on the
display of the wireless remote controller.
2. The dehumidifying modes (such as mold guards) of individual RACs cannot be operated using the ME Remote Controller/
System Controller.
When an independent dehumidifying mode is set using the remote control that came with the RAC, “Dry”will appear on the
display because there is no corresponding mode on the ME Remote Controller/System Controller.
3. Functions that are available on the ME Remote Controller/System Controller but that are not available on the RAC can be
operated by switching to a predetermined separate operation mode. (See the “Table of RAC Functions Activated from the
ME Remote Controller/System Controller.”)
4. Functions that are available on the remote control of the RAC but are not available on the ME Remote Controller/System
Controller will produce a predetermined display. In this case, the actual operation and the display may differ. (If the fan
speed is automatically set using the remote control that came with the RAC, the setting “High”will appear on the ME
Remote Controller/System Controller. Likewise, if the fan direction is set to automatic, the setting “Downward Air Flow 80%”
will appear on the ME Remote Controller/System Controller.)
5. Because the temperature range of the RAC is broader than the ME Remote Controller/System Controller, when the RAC is
set to lower than 17°C or higher than 30°C, the temperature display on the ME Remote Controller/System Controller will
show the minimum or maximum temperature that can be set. (For example, even if the room air conditioner is set to cool a
room to 16°C, the display on the ME Remote Controller/System Controller may read “17°C.”)
The RAC operates according to the room temperature detected by the RAC unit.
6. Timer operations should be set using only the remote control that came with the RAC or the ME Remote Controller/System
Controller. If both are used to set the timer to the same time, the timer will not function properly.
7. When the timer is set using the remote control that came with the RAC, the timer information will not be displayed on the
ME Remote Controller/System Controller.
8. If the timer is set using the ME Remote Controller/System Controller, the timer set using that device will not be cancelled
even if the unit is turned off using the remote control that came with the RAC.
9. When manual operations using the system controller are prohibited, the remote control that came with the RAC will not
function, but the beeping sound that is emitted when it is operating normally will still sound.
10. To clear an error message from the display of the ME Remote Controller/System Controller, briefly turn off the unit using
the ME Remote Controller/System Controller or the remote control that came with the RAC. (The error display on the air
conditioner unit may be cleared automatically, but it will not clear from the ME Remote Controller/System Controller until
the unit is turned off.)

9
8. Table of RAC Functions Activated from the ME Remote Controller/System Controller
This table shows the RAC functions that can be activated by the ME Remote Controller/System Controller.
* Some items may not be displayed, depending on the switch settings.
* When operating the unit using the remote control that came with the RAC, the operation shown on the remote is the one that
will be activated on the actual RAC unit. In this case, the information shown on the display of the ME Remote Controller/System
Controller may not accurately reflect the unit’s actual operations (see the “Notes Regarding Use”).
ME Remote Controller/System Controller operations/display
On/Off
Fan
Auto Cool
Auto Heat
Cool
Heat
Dry
17–30°C
Low
Medium 1
Medium 2
High
Position 1 (Horiz.)
Position 2
Position 3
Position 4
Swing
Power
Mode
Temperature settings
Fan speed settings
Air directional settings
RAC response
On/Off
Fan
Cool
Heat
Cool
Heat
Dry
17–30°C
Low
Low
Medium
High
Position 1 (Horiz.)
Position 3
Position 4
Position 5
Swing
9. Specifications
Input voltage
Power consumption
Input current
Input voltage
Air conditioner side
M-NET side
12 V
0.6 W
0.05 A
17–24 V

This product is designed and intended for use in the residential,
commercial and light-industrial environment.
The product at hand is based on
the following EU regulations:
•Low Voltage Directive 73/23/EEC
•Electromagnetic Compatibility Directive 89/
336/EEC
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Printed in JapanSG79Y416H01