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Air to Air Heat Exchanger with DX Coil Unit
Installation Manual
EN
Air to Air Heat Exchanger with DX Coil Unit
Installation Manual
12
Advanced system
WARNING
• Use wiring that meets the specifications in the Installation Manual and the stipulations in the local regulations and
laws. Use of wiring which does not meet the specifications may give rise to electric shocks, electrical leakage,
smoking and / or a fire.
• When carrying out electric connection, use the wire specified in the Installation Manual and connect and fix the wire
securely to prevent them applying external force to the terminals. Improper connection of fixing may result in fire.
• Electrical wiring work shall be conducted according to law and regulation in the community and Installation Manual.
Failure to do so may result in electrocution or short circuit.
REQUIREMENT
For the connecting procedure and electric wiring of External Input (sold separately), refer to the Installation Manual of
Remote ON/OFF Adapter NRB-IHE.
1
Connecting to external devices by using remote control interface.
• Air to Air Heat Exchanger with DX Coil Unit receives ON-OFF signal from external devices such as central
remote control. (Command) Air to Air Heat Exchanger with DX Coil Unit concurrently sends operating status
signal (operating display, error display). (Reply)
1) Connecting diagram
2) Operating status display for remote controller
3) Correspondence to ON-OFF signal from remote controller
4) Control priority type can be selected between remote priority control and last command priority
control
TCB-IFCB-4E2
Outdoor unit
Air to Air Heat Exchanger with
DX Coil Unit
Remote control interface
Local remote controller
Power supply 220-240 V ~
For remote command
For remote reply
TCB-IFCB-4E2
Error display
Operating display
Power supply maximum 240 VAC, 0.5 A
No voltage
ON OFF
Continuous signal
2
Switching the remote controller between invalid / valid or low / high 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
1) When switching the remote controller between invalid / valid from an external device
SW1 [Remote controller Invalid: ON, Valid: OFF]
• For NRC-01HE (remote controller for the Air to Air Heat Exchanger with DX Coil Unit), 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 (remote controller for the air conditioner), pressing the [ON/OFF] button has no effect.
• When the remote controller is inoperable, 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.
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).
Specification of the external contact:
Contact for microcurrent
DC12 V 1 mA
(locally procured)
Adapter for remote ON/OFF control
NRB-1HE
CN705
Control circuit board of the
Air to Air Heat Exchanger
with DX Coil Unit
SW1
As these terminals are not used, insulate them.
The remote controller is
inoperable when SW1 is
closed.
(1), (2)
No voltage
a-contact
Yellow (2)
Red (3)
White (4)
Green (1)
Black (5)
2 m
31-EN
32-EN
+00ET99805001-2.book Page 16 Tuesday, July 26, 2011 1:39 PM
