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EDMMT712101
24-hour ventilation operation
Purpose • Functions
In properties where constant (24-hour) ventilation is required, it is possible to operate the unit at a low airflow rate even when no one is
in the room at night.
POINT
24-hour ventilation operation starts by using the ON/OFF button on the remote controller.
The operation indicator does not light up. The operation is set to normal operation if the ON/OFF button is pressed.
This function does not work under direct duct connection setting.
Intermittent fan operation at low notch is performed during 24-hour ventilation operation. Intermittent time can be selected by making
field settings.
An example of usage pattern
※ 1 . Offices are non-residential buildings and they may not necessarily require 24-hour ventilation. Please confirm with the local
authority where you are submitting your application.
※ 2 . The units do not always run continuously. Please check in advance where 24-hour ventilation is required.
Intermittent Continuous Intermittent
High
Low
9 hours
12 hours
Time zone
Remote
Operation
Stop
controller
Fan control and remote controller display during 24-hour ventilation
Note)1. The operation indicator on the remote controller is OFF during the 24-hour ventilation operation. However, external output can be performed by changing the
field settings and by using an adapter printed circuit board.
2. If the "Auto Display Off" function is set on the BRC1E63 remote controller, the screen display will turn off after a certain period of inactivity (factory default
setting: 30 minutes).
3. As with bypass mode operation, do not use the unit beyond the operating temperature range even during 24-hour ventilation operation.
Remote controller display
Operation lamp
During ventilation operation
Example of control wiring
External output of 24-hour ventilation operation status
Power supply for indicators
L
X1
X2
X3
X4
"KRP1C18"
Contact capacity
NO VOLTAGE A-CONTACT
240 VA or below
Field settings using remote controller
Output of 24-hour ventilation operation and normal operation
Output of 24-hour ventilation operation
VAM-HVE/HVLT Series
Continuous
Intermittent
13 hours
20 hours
Operation
Stop
BRC1E63
BRC1H62
OFF
With display
With display
X9A
P1P2
Heat Reclaim Ventilator Unit
< Essential optional accessory>
• Adapter for wiring: KRP1C18
• Installation box for adapter: KRP1C18A90
.....................................................
OFF
[18(28)•9•06]
.........
[18(28)•9•07]
Control System
49
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