conditioning system ........................... 18
7.4Step - 2 Test run of air conditioning
system ...............................................19
7.5Step - 3 Initial settings for the BAC-
HD150 related items ..........................20
7.6Step - 4 Test run of BAC-HD150 ....... 21
to ensure safety. The users should keep this
manual for future reference and refer to it as
necessary.
BACnet™ is a registered trade mark of ASHRAE
(American Society of Heating, Refrigerating, and
Air-Conditioning Engineers, INC.).
Safety precautions
Before using the BAC-HD150, read the Safety Precautions section carefully to ensure proper operation.
These safety precautions must be observed by anyone who operates the BAC-HD150.
Keep the Instruction Book and Installation Manual for future reference. Make sure both manuals are passed on to any
future air condition system users.
WARNING
of serious injury of death.
This symbol indicates that failure to follow the instructions exactly as stated poses the risk
This symbol indicates that failure to follow the instructions exactly as stated poses the risk
CAUTION
of injury or damage to the BAC-HD150.
WARNING
The unit must be installed by a dealer or technical
representative.
Improper installation by an unqualified person may result
in electric shock and fire.
Install in a location that is strong enough to
withstand the weight of the unit.
A weak installation area may cause the unit to fall down,
resulting in a personal injury.
Only use specified cables. Securely connect each
cable so that the weight of the cable is not applied to
the connectors.
Loose or improper connections may result in heat
generation or fire.
If any abnormality is noticed (e.g., burning smell), stop
the operation, turn off the power supply, and contact
your dealer or technical representative immediately.
Continuing the operation may result in damage to the
BAC-HD150, electric shock, or fire.
Ask your dealer or an authorized technician to move
or reinstall the BAC-HD150.
Improper installation may result in an electric shock or
fire.
BAC-HD150 must be disposed of properly.
Contact your dealer for proper disposal procedures.
Do not attempt to modify or repair the BAC-HD150.
Modification or improper repair may result in electric
shock or fire. Consult your dealer when repairs are
necessary.
Stop the operation immediately and notify your
dealer if the BAC-HD150 does not operate, or when
any abnormality is noticed.
Continuing the operation may result in damage to the
BAC-HD150 or fire.
CAUTION
Do not install the BAC-HD150 where there is a risk of
leaking flammable gas.
If the leaked gas accumulates around the BAC-HD150, it
may ignite and cause an explosion.
Do not wash the BAC-HD150 with water.
Doing so may cause an electric shock or malfunction.
Do not use the BAC-HD150 for specialized
applications.
This product is designed exclusively for use with the
MITSUBISHI ELECTRIC building air conditioning control
system. The use of this product for other purposes may
result in malfunctions.
Do not spray insect sprays or sprays with flammable
propellants to the BAC-HD150.
To avoid the risk of fire or explosion, do not place
flammable sprays near the BAC-HD150 or spray them
directly on the BAC-HD150.
Do not apply mechanical shock to BAC-HD 150.
Do not use the BAC-HD150 in an environment high in
oil, steam, or sulfuric gas.
These substances may have adverse effects on the
performance of the BAC-HD150 or damage its parts.
Operate the BAC-HD150 within the temperature range
specification.
The use of controller outside of its specification may
result in serious damage to the BAC-HD150. Be sure to
check the temperature range specification in the
Installation Manual.
Use a security device such as a VPN router when
connecting the BAC-HD150 to the Internet to prevent
unauthorized access.
If no security devices are installed, the operation settings
may be changed by an unauthorized person without the
knowledge of the user.
- 2 -
1Introduction
1.1Applicable Model
BAC-HD150 have functions to monitor and operate air conditioning units (excl. certain models).
Table: Models and available functions
ModelFunction (Monitor/Operation)
S series
Y Series
CITY MULTI
LOSSNAY
OA Processing unit
R2 series
WY series
WR2 series
A-control unit (Mr Slim)
AK-control unit (Mr Slim)x
K-control unitx
Room air conditioner (RAC)x
Air To Water Booster unit/Air To Water
HEX unit
: Supported
X : Not supported
(Requires an adapter)
x
- 3 -
1.2Restrictions/Cautions
Restrictions and Cautions for BAC-HD150 are as follows.
(1) Restrictions on the system configuration
Number of connectable unitsNotes
M-NETOne line only
Indoor unit50 units max./M-NETIncludes all IC, AIC, LC, FU.
SymbolIC: Indoor unit; AIC: A control indoor unit;
LC: LOSSNAY; FU: OA Processing unit
(2) Supports for errors
• It is recommended to recover the system immediately when errors related to air conditioning are displayed on the building
management system.
(3) Operation during power failure
• When BAC-HD150 needs to be operated during power failure, a power backup device such as UPS (Uninterruptible Power
Supply) is recommended to be installed.
(4) Functions
• Due to continuing improvement, specifications are subject to change without notice.
- 4 -
2System configurations
㩷
㩷
2.1Sample system configuration
HUB
BACnet
BACnet
M-NET
㩷
㩷
㩷
Outdoor unit
㩷
BAC-HD150
Outdoor unit
System remote controller
M-NET: Mitsubishi Electric air conditioning control line
ME remote controller
ME remote controller
Building Management System
HUB
M-NET
Indoor unitLOSSNAY
M-NET
Indoor unitLOSSNAY
HUB: Switching HUB
- 5 -
2.2Group configurations
BACnet controls each group.
BACnet contol hierarchy consists of M-NET number + Group number + Member number.
Refer to “3.4 Relations between objects and control items” for member number details.
(1) M-NET number
Fixed to 01
(2) Group number
Multiple indoor units (IC) can be controlled as a target group. Group number range: 1-50
(3) Member number
Corresponds to Monitor/Operation items of air conditioners
㩷
㩷
㩷
㩷
BACnet
BAC-HD150
Building Management System
Air conditioning system
㩷
㩷
㩷
M-NET
㩷
㩷
㩷
㩷
㩷
㩷
IC01IC
02
Group
IC
03
IC04IC
Group
No.01No.03
05
㩷㩷
Unit address
Group number
㩷
㩷
㩷
㩷
Outdoor units, remote
controllers, and etc. are omitted
in this drawing.
㩷
- 6 -
3Function specifications
3.1Basic Functions
BAC-HD150 has functions that communication from an air conditioning system is protocol converted to BACnet
communication, that command from a Building Management System is converted and transmitted to an air conditioning
system, and that air conditioning system status data is collected and the status change is detected. BAC-HD150 also collects
data on air conditioning units operation status and transmits the data upon request from the building management system.
Refer to “3.4 Relations between objects and control items” for control item of BAC-HD150.
3.2Communication protocol specifications
(1) General descriptions of protocol
BACnet/IP which applied to ANSI/ASHRAE 135-2004 correspondingly on UDP/IP of Ethernet is used.