Centralized Control System - Daikin VRV Service Manual

HRV-Related
7.2

Centralized Control System

7.2.1 Collective / Individual Control [Unified On / Off Controller DCS301B61]
Purposes and
Functions
Cautions: 1. It is necessary to assign a central group number to each indoor unit and HRV unit.
2. The operation of HRV unit is not interlocked with the operation of indoor unit under this
Switch Setting for The initial setting is required by the remote controller for indoor unit or HRV unit.
HRV Unit
Optional
Accessories
Required
Example of
Control Wiring
234
One controller can control the operation of "ON / OFF" of 16 groups of the units collectively
or individually.
Also up to 4 controllers can be installed in one centralized transmission line (in one system),
which enable to control up to 64 groups. (16 groups × 4 = 64 groups)
The ventilation mode will be selected automatically.
control system. If you like to have an interlocked operation, please consider other control
system.
No change is required. (as per factory setting)
Remote controller (Only when you use) BRC301B61
Power supply
P1 P2
Indoor unit
P1 P2
Remote controller
for indoor unit
P1 P2
Indoor unit
P1 P2
Remote controller for indoor unit
Unified
On / Off
controller
F1 F2 J1 J2 JC
SS1
X9A
X10A
P1 P2
HRV unit
Remote controller
P1 P2
for HRV unit
Connecting line can be
extended up to 1000 m
maximum.
F1 F2 J1 J2 JC
SS1
X11A
X9A
X10A
P1 P2
HRV unit
Si30-408
F1 F2
X11A
F1 F2
(HC0028)
Appendix