Page 1: Table Of Contents
2-2. External dimensions ......6 2-3. Power supply function to the M-NET transmission line ........7 Sample system configuration ......8 3-1. System in which BAC-HD150 is connected to the M-NET line ....8 3-2. Restrictions for using BAC-HD150 in combination with AG-150A ....9 3-3.
Page 2: Safety Precautions
Safety Precautions • Thoroughly read this installation manual before use to ensure safety. • Before installing the BAC-HD150, read the Safety Precautions section carefully to ensure proper installation. • Observe these precautions carefully to ensure safety. WARNING Indicates a risk of death or serious injury.
Page 3 General caution Do not install the unit in environments where large Wear protective gloves. amounts of oil (including machine) or acidic/alkaline A high voltage is applied to the terminals. To reduce the risk of chemical sprays are present. These types of substances electric shock, wear protective gloves before touching the may cause device performance to be reduced and cause electrical parts on the unit.
Page 4 Important To avoid deformation and malfunction, do not install the To avoid malfunctions, do not bundle the power cable and unit in direct sunlight or where the ambient temperature signal transmission lines together, or put them in the exceeds 55°C (131°F) or drops below -10°C (14°F). same conduit.
Page 5: Package Contents
* Expansion controllers (PAC-YG50ECA; separately sold) can be connected to BAC-HD150 to control up to 150 units. Up to 3 PAC-YG50ECA can be connected to each BAC-HD150. Refer to section 3-3. "System in which BAC-HD150 is connected to the expansion controller" for details. - 5 -...
Page 6: Specifications
2-2. External dimensions Unit: mm (in.) 250(9- 97.2(3- 155(6- 47.5(1- Terminal block (to be used in the future when functions of the BAC-HD150 are upgraded.) M-NET Terminal Power source 100-240 VAC block (M3.5) Terminal block (M3.5) LAN1 LAN2 - 6 -...
Page 7: Power Supply Function To The M-Net Transmission Line
BAC-HD150 has a built-in function to supply power to the M-NET transmission line. (power supply coefficient: 6) When power is supplied from BAC-HD150, the total power consumption coefficient of the system controller and M-NET remote controller to which BAC-HD150 supplies power (See table 1) should not exceed the power supply coefficient of BAC-HD150, which is six.
Page 8: Sample System Configuration
3 Sample system configuration 3-1. System in which BAC-HD150 is connected to the M-NET line The figure below only shows the transmission line connections. Power supply lines are omitted. Building Management System Indoor unit Local remote controller Mitsubishi Electric air conditioning system ®...
Page 9: Restrictions For Using Bac-Hd150 In Combination With Ag-150A
(3) Restrictions on the DB No. None (4) Miscellaneous restrictions If a main system controller, such as AG-150A, is used in combination with a BAC-HD150, there will be many restrictions on the settings, such as group settings. Please consult your dealer for more information. M-NET...
Page 10: System In Which Bac-Hd150 Is Connected To The Expansion Controller
• The same M-NET address cannot be used twice in the same M-NET system that connects to the same PAC-YG50ECA. NOTES * The BAC-HD150 and the type of controllers that connect to the expansion controller via the LAN (e.g., AG-150A) each have a DB No. This 2-digit number is indicated on the package box and the controller. ([DB No.:**]) Controllers with different DB No.
Page 11: Restrictions For Using Bac-Hd150 In Combination With Other Controllers
Note that the number of connectable controllers and compatible software versions are limited. If the software version is not compatible, update the software version of the controllers. Unless AG-150A and/or PAC-YG50ECA support the dual set point function, BAC-HD150 is not also available for the dual set point function (AV_xxxx24-28).
Page 12: Setting M-Net Address For Various Devices
Refer to the K-transmission converter Installation manual for details. ① Be sure to set the BAC-HD150 address to "000." ② Be sure to set the K-control air conditioning unit connection setting on the BAC-HD150 to Yes (set via the Setting Tool).
Page 13 * Main and sub system controllers (M-NET) BAC-HD150 can only be used as the main system controller, but not as a sub system controller.  Main system controller (Main SC) Main SC refers to a controller that controls all other system controllers including the units they control. If a given system has only one system controller, that controller becomes the main SC.
Page 14: Installation
4 Installation 4-1. Required parts The following parts are required to install the unit. Required parts Specification Power cable/ Power supply cable of appliances shall not be lighter than design 245 IEC 57 or 227 IEC 57. Protective earth cable Cable size:0.75mm²...
Page 15: M-Net Transmission Line Length
4-2. M-NET transmission line length • Connect the BAC-HD150 to the transmission line for centralized control (TB7 on the outdoor unit). • There should only be one power supply source within a single transmission circuit. The factory setting is that power is not supplied from the BAC-HD150.
Page 16: Installation
4-3. Installation • Leave enough space around the unit to allow for an installation/uninstallation of the cover. (The amount of space needed is shown in the figure below.) • Screw down the cover with M4 screws as shown in the figure below. Be sure to fix the four corners to prevent it from falling.
Page 17: Wiring Connections
Use a bipolar breaker (2P2E) with a minimum contact distance of 3 mm ( in.). • Install a breaker for each BAC-HD150 so that turning off the power to one BAC-HD150 will not affect the rest of the devices in the system.
Page 18: Connecting The M-Net Transmission Lines
A B S M-NET transmission line (non-polarized) Cable clamps Shield To not supply power to the M-NET transmission line from the BAC-HD150 Power supply unit (PAC-SC51KUA...etc) Outdoor unit BM ADAPTER M-NET (BAC-HD150) CN40 CN40...
Page 19 (2) System in which BAC-HD150 is connected to the expansion controller (PAC-YG50ECA)(system in which BAC-HD150 is not connected to the M-NET) It is not necessary to connect the M-NET transmission line to the TB3 on BAC-HD150. Connect the power jumper as shown in the figure below.
Page 20: Connecting The Lan Cable
5-4. Connecting the LAN cable • Make sure that the LAN cable is long enough to reach the LAN1 and LAN2 connectors on the BAC-HD150. Leave the LAN cable disconnected until all the initial settings for the BAC-HD150 (IP address setting etc.) have been completed.
Page 21: Making The Initial Settings
CAUTION • Install the LAN cable before installing the unit, and route the cable in the same way as the M-NET transmission lines. • Connect the BAC-HD150 to a private network. Use a security device such as a VPN router when connecting to the Internet. (Without a proper security measure in place, the air conditioning system is vulnerable to access from unauthorized users.)
Page 22 NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide resonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
Page 24 Please be sure to put the contact address/telephone number on this manual before handing it to the customer. HEAD OFFICE: TOKYO BLDG. , 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Authorized representative in EU: MITSUBISHI ELECTRIC EUROPE B.V. WT05543X03 HARMAN HOUSE, 1 GEORGE STREET, UXBRIDGE, MIDDLESEX UB8 1QQ, U.K.

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