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Air to Air Heat Exchanger
2) When the output signal of the external device is a no voltage a-contact (static signal)
(locally procured)
(1), (5)
No voltage
a-contact
SW4
As these terminals are not used, insulate them.
Running when SW4 is closed, and stopped when it is open.
• Transmission wire used to extend must be locally procured: Non-polarity, shielded wire (H05 VVC4V5-K
or 60227 IEC 74) 0.5 mm
2
Maximum length: 50 m
• Insert the Remote ON/OFF Adapter NRB-1HE (sold separately) into connector CN705 (5P).
• If a command is sent to one of the units in the group, all the air conditioners and the Air to Air Heat
Exchanger operate together.
If a polar contact such as a photocoupler is used with a no
voltage a contact, connect the positive pole to terminal (5),
and the negative pole to terminal (1).
2
Operating together with a pulse transmission device such as a building management system
(separately sold External Input)
1) Select "Pulse: ON" for No.1 of SW701 (Changeover switch for pulse /
static). (Factory default: "Static")
2) Insert the Remote ON/OFF Adapter NRB-1HE (sold separately) into
connector CN705 or CN706. (For the input signal, refer to of "1) When
the output signal of the external device is DC12 V or DC24 V (static
signal)" or "2) When the output signal of the external device is a no
voltage a-contact (static signal)" above.
* The pulse width should be 200 msec or more.
3
Switching the remote controller between invalid / valid, low / high, or Bypass mode / Heat
exchange mode from an external device (separately sold External Input)
* Perform connection with one of the units in the group.
* Static signal only
Insert the Remote ON/OFF Adapter NRB-1HE (sold separately) into connector CN705.
• Transmission wire used to extend must be locally procured: Non-polarity, shielded wire (H05 VVC4V5-K or
60227 IEC 74) 0.5 mm
2
Maximum length: 50 m
If a polar contact such as a photocoupler is used with a no
voltage a-contact, connect the positive pole to terminal (2),
(3), or (4), and the negative pole to terminal (1).
33-EN
Installation Manual
Remote ON/OFF Adapter NRB-1HE
CN705
Green (1)
Yellow (2)
Red (3)
White (4)
Black (5)
Control circuit board of the
Air to Air Heat Exchanger
2m
Specification of the external contact:
Contact for microcurrent
DC12 V 1 mA
SW701
Changing the pulse
ON
/ static
ON
Pulse: ON
Static: OFF
OFF
Select "ON" for No.1
1
2
of SW701
(Factory default:
Static)
Specification of the external contact:
Contact for microcurrent
DC12 V 1 mA
Air to Air Heat Exchanger
– 17 –
1) When switching the remote controller between invalid / valid from an external device
(locally procured)
(1), (2)
No voltage
SW1
a-contact
The remote controller is
inoperable when SW1 is
closed.
As these terminals are not used, insulate them.
SW1 [Remote controller Invalid: ON, Valid: OFF]
• For NRC-01HE (remote controller for the Air to Air Heat Exchanger), when one of the buttons below is
pressed,
blinks and the operation is invalid.
* [ON/OFF] button
* [VENT] button
* [VENT MODE] button
* [VENT FAN] button
• For RBC-AMT32E, AMS41E (remote controller for the air conditioner), pressing the [ON/OFF] button has
no effect.
• When the remote controller is inoperable, the 24-hour ventilation mode and nighttime heat purge operation
are not available.
• If a command is sent to one of the units in the group, the invalid / valid setting of the remote controller in
the group can be switched.
2) When switching between low / high from an external device
(locally procured)
(1), (3)
No voltage
a-contact
SW2
Low is applied when SW2
is closed, and High when
it is open.
As these terminals are not used, insulate them.
SW2 [Low: ON, High: OFF]
• For NRC-01HE (remote controller for the Air to Air Heat Exchanger), the message on the display is
changed. However, when the air conditioner operates Air to Air Heat Exchanger system linked with air
conditioners, ventilation fan speed (Low / High) is changed though the ventilation amount is not shown on
the display.
• If a command is sent to one of the units in the group, all the Air to Air Heat Exchangers in the group operate
together.
• The latter operation of the remote controller or the external device overrides the former.
Installation Manual
Remote ON/OFF Adapter NRB-1HE
CN705
Green (1)
Yellow (2)
Red (3)
White (4)
Black (5)
Control circuit board of the
2m
Air to Air Heat Exchanger
Remote ON/OFF Adapter NRB-1HE
CN705
Green (1)
Yellow (2)
Red (3)
White (4)
Black (5)
Control circuit board of the
Air to Air Heat Exchanger
2m
34-EN
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