Daikin VAM-FA Technical Data Manual page 75

15 Control systems
15 - 3 Basic patterns
15 - 3 - 3 The interlocked operation system
Interlocked operation with 2 or more group of VRV system
Purposes and functions
• When the HRV unit is interlocked to 2 or more group of
indoor units, the HRV unit operates, if one of indoor unit
in groups is in operation. The HRV unit can also be operated
independently by remote control for indoor unit, even if the
indoor unit is not in operation.
Cautions
1. It is not necessary to set the group number for central
control.
2. One adapter PCB for remote control should be installed in
the one of the unit connected to the central transmission
line.
(When you install an adapter PCB for remote control in the
indoor unit, select the applicable model number of Adapter
PCB to be installed.)
• Heat reclaim ventilation • VAM-FA/FB
• Ventilation • Heat reclaim ventilation
Example of control wiring
Up to 1000 m maximum
F1 F2
P1 P2 P1 P2
Indoor unit
P1 P2 P1 P2
Remote control for indoor unit
F1 F2
P1 P2
Indoor unit
Remote control for indoor unit
P1 P2
Note:
The central transmission line can be extended up to 1000 m
maximum.
Switch setting for HRV unit
The initial setting by the remote control for indoor unit or HRV unit.
Optional accessories required
• Adapter PCB for remote control: KRP2A61
B1 B2 BC W1 W2 W3 W4
KRP2A1
(Installed in
the HRV unit)
F1 F2 J1 J2 JC F1 F2
X11A
SS1
X9A
X10A
P1 P2
Indoor unit HRV unit
(HC0027)
3
1
15
73