Cover - Mitsubishi Electric MAC-821SC-E Installation Manual

2-1. Selecting Compatible Models
The Installation Manual for the MA & Contact terminal interface (MAC-397IF-E) A contains a list of room air conditioner models
(sold separately) that are compatible with this centralized controller.
I Connection Requirements
Breaker *
Power supply
~/N 220–240 V
50/60 Hz
Ground
* Connect the power switch with gap of 3 mm or more when open to interrupt the source power phase. (When the
power switch is shut off, it must interrupt all phases.)
2-2. Selecting an Installation Site
• The centralized controller 1 is an exposed, wall-mounted model.
Install the unit in a dry location.
• For information on selecting a mounting wall, see the "Mounting Wall" in section 2.
I Switch Box
The centralized controller power and connection wiring is generally direct wired.
The switch box 3 supplied (with switch box covers for 2 units) should therefore be used for installing the centralized controller.
2-3. Electrical Work
2
• Use 1.5 mm power supply wire (2-core + ground).
• For the connection wire C, use a control cable CVV (0.5 mm
CVV is a control cable which is sheathed in polyvinyl chloride with polyvinyl insulated wires inside.
• Complete the power supply wire and connection wire work before mounting the centralized controller.
• The electrical work should be performed in accordance with the Technical Standards Regarding Electrical Equipment and the
Interior Wiring Standards.
2-4. Assigning Air Conditioner Device Numbers
• The numbers (1–8) displayed on the control panel of the centralized controller 1 correspond to the numbers of each connected
air conditioner (device number).
• Assign air conditioner device numbers that correspond to the numbers shown on the control panel based on the structure of the
building or the layout of the rooms in which the air conditioners are installed.
4
Power supply wire B
L
N
MAC-821SC-E
Connection wire C
TB571
D TC1
C TC2
M
TM1
TM2
MAC-397IF-E
2 3-core) or equivalent product.
5
CN560 CN105
Air conditioner
Indoor unit