Daikin D-BACS, Design Manual, Page: 277 / 376

260 1.3 Connection other than VRV
Power Proportional Distribution (P.P.D.)
1.3 Connection other than VRV
Though the models other than VRV are included in “Rate calculation applicable models”, the following system shows the
example of connection of HRV Type FJ and general-purpose adapter.
1.3.1 System Example
1.3.2 Requirements
„
If HRV and general-purpose adapter are used, the power consumption of the indoor unit is to be distributed.
Therefore, it is necessary to input the power consumption of the VRV, HRV, general-purpose adapter and constant
power-consumption equipment (units) to be connected to the dues control unit. Concretely, using the watthour meter
(with pulse output), the pulse signal is to be connected to the iPU.
„
For HRV, the centralized control wiring is required without fail.
„
Only the type consuming constant power (light, etc.) can be connected to the general-purpose adapter.
If the power consumption varies depending on the inverter, etc., such an equipment cannot be connected.
(Distribution calculating error is increased.)
PC
Wh1
Wh2
Outdoor
unit power
Indoor unit, HRV light,
pump & fan power
Electric energy pulse
signal line
Remote control connection
between HRV and building-
use multi-type
If the VRV and HRV are connected
through remote controller, the HRV
can independently be operated,
therefore, the centralized control
wiring is required to HRV.
HRV single
General-purpose adapter
Connection by contact signal
General number of wiring:
Run command (Firm contact) ··· 2 pcs.
State/Abnormal monitoring
······ 3 pcs.
Light Ventilating
fan
Pump
Only the equipment
consuming constant power
can be connected through
general-purpose adapter.
iPU