8 3.2 Main Specifications and Functions of the Equipment
Outline of D-BACS System
3.2 Main Specifications and Functions of the Equipment
For more effective localized environmental control Daikin offers various control systems such as single or double remote
control or centralized control. This enables the construction of a variety of operational control systems which can be
adapted for various uses from remote control to building automation.
∗1 In case of group control, the remote controller used as master control must be selected with auto-swing function
(BRC1A61). When the group has cassette (FXC (Q)), FXF (Q)) or ceiling suspended (FXH (Q)) or cassette corner
(FXK (Q)) or wall mounted (FXA (Q)) models.
∗2 In case of using BRC2A51 (Simplified Remote Controller) to Heat Recovery Series, be sure not to use this
independently. Use with other remote controllers (BRC1A51 · 52, BRC1C62 or KRC19-26A or DCS302A51).
Control Method Objective / Use
Unit Name and
Model
Function
Standard Number of
Units
Control by Remote Controller
Local operation of
remote controller
Example of typical
use
BRC1C62
*2 BRC2C51
In the right
figure, a wired
remote
controller is
used for the
system
configuration.
However, the
same control is
available if the
controller is
replaced by a
wireless.
When using
two remote
controllers, it is
not possible to
set both of
them for
wireless
remote
controllers. Be
sure to set at
least one of
them for a
wired remote
controller.
Operational functions
Start/Stop (ON/OFF)
Operation Mode Selection
Temperature setting
Timer setting (Settings in units of 1 hour up to
a maximum of 72 hours)
Air flow setting
Air flow direction adjustment (Swing flap)
Indication function
Operating display
Program dry function display
Defrost/Hot start display
Filter sign
Temperature setting display
Timer display
Air flow display
Abnormal operation display
∗
In case of group control all the indoor units in
the system are set to the same value and
each unit is controlled individually by its
internal thermostat. (Not by the thermostat
equipped in remote controller) In commond
case of double remote control the last
command priority. (Selection between main
and sub controller is essential)
Note)
Some functions cannot be set depending on the
shape of indoor unit.
1 remote controller
controls 1 indoor unit
Remote operation
of remote
controller
For control from
distant place
2 remote control
For control from 2
places (distant or
local)
2 remote controllers
control 1 indoor unit
Group control
∗
1
For the control of
plural indoor units
on a floor at the
same time
1 remote controller
controls up to 16
indoor units
simultaneously
∗
1
Group control by 2
remote controllers
For above control
from distant place.
2 remote controllers
control up to 16
indoor units from 2
different places
simultaneously
Forced OFF
command from
outside
Forced OFF for
forgetting to turn
equipment off, or
in times of an
emergency.
Forcibly stops indoor unit operation by
command from outside.
During remote controller group control, input a
command from outside to any one of the
indoor units.
Same as the number
of units controlled by
remote controller
Combining control
by remote
controller
Operation of other
equipment
combined with the
operation of
indoor unit
Operates HRV in accordance with indoor unit
operation.
Same as the number
of units controlled by
remote controller
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