Si30-408 HRV-Related
Appendix 237
7.4 Additional Functions
7.4.1 Operation by Power Supply [HRV Unit]
Purposes and
Functions
The HRV unit is operated by "On / Off" of the main power breaker. This is possible only for
the independent operation system. (When the main power is disconnected, the transmission
error will be displayed if the HRV unit is interlocked to the indoor unit or controlled by the
centralized controller.)
Cautions: 1. Install insect control wire net on the air intake and exhaust openings. (If the power is
disconnected when the damper is open, the damper remains open and the insects may get
into the room.)
2. When you install the remote controller, it is possible to have normal operation after the
electric power is supplied.
Example of
Control Wiring
Switch Setting for
HRV Unit
Install the remote controller for indoor unit for the initial setting. After completion of the initial
setting, remove the remote controller.
Optional
Accessories
Required
None
X9A
X10A
X11A
J1 J2 F1 F2
P1P2
P1P2
JC
SS1
HRV unit
Remote controller for HRV unit
(HC0030)
The initial setting is required by the remote control for
indoor unit. Power-on setting..... "ON" [18(28)·1·02]
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