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1.2
Restrictions/Cautions
Restrictions and Cautions for BAC-HD150 are as follows.
(1) Restrictions on the system configuration
(a) When BAC-HD150 is connected to M-NET
(b) When BAC-HD150 is connected to PAC-YG50ECA (Expansion Controller)
• Restrictions on the DB No.
Controllers (PAC-YG50ECA, AG-150A and BAC-HD150) with different DB No. cannot be connected to each other.
When DB No. on the controllers is different, update the software version of the controllers.
Refer to section 3-3 “System in which BAC-HD150 is connected to PAC-YG50ECA (Expansion Controller)” in the
BAC- HD150 Installation Manual for information about DB No.
(2) Connecting AG-150A
• When connecting BAC-HD150 to PAC-YG50ECA, connect AG-150A to set the M-NET address, group, and interlocked
operation with LOSSNAY for PAC-YG50ECA.
(3) Supports for errors
• It is recommended to recover the system immediately when errors related to air conditioning are displayed on the building
management system.
(4) 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.
(5) Functions
• Due to continuing improvement, specifications are subject to change without notice.
(6) Models in a group
• BAC-HD150 monitors and controls indoor units for each group (*1).
To group multiple indoor units, use the same models in a group.
*1 : Group has two types: a unit in a group or multiple units in a group.
(7) Request interval (from BMS* to BAC-HD150) *BMS=Building Management System
• When sending Read_Property or Write_Property from BMS to BAC-HD150, set the interval to 200 (ms/property) or above.
[Ex.1]
Number of connectable units
Notes
M-NET
One line only
Indoor unit
50 units max./M-NET
Includes all IC, LC, AIC, KIC, BU, AU.
Symbol
IC
: Indoor unit
LC : LOSSNAY
Includes the FU (OA processing units)
that are configured in the group but not
interlocked with the indoor units.
AIC : A-control indoor unit
KIC : K-control indoor unit
BU : Air To Water Booster unit
AU : Air To Water HEX unit
Number of connectable units
Notes
PAC-YG50ECA
3 units max.
Software Version : 1.30 or later
AG-150A
1 or 2 units
Software Version : 2.30 or later
BAC-HD150
1 unit
Software Version : 2.00 or later
Indoor unit
150 units max.
(50 units max. / PAC-YG50ECA)
Includes all IC, LC, AIC, KIC, BU, AU.
Read_Property
Read_Property
Write_Property
Read_Property
Write_Property
200ms
200ms
200ms
200ms
time
WT05542X04.book Page 4 Wednesday, July 3, 2013 12:13 PM
