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Air to Air Heat Exchanger with DX Coil Unit
Installation Manual
Air to Air Heat Exchanger with DX Coil Unit
Installation Manual
Nighttime heat purge setting
Nighttime heat purge exhausts hot air in the room by bypass mode and reduces the cooling load in the morning.
Monitoring operation starts after [Setting value] x 1 hour(s). (1 to 48 hours)
* Adjust this setting for all the Air to Air Heat Exchanger with DX Coil Units in the group. (Only when the Air to Air
Heat Exchanger with DX Coil Unit(s) operates link with air conditioners)
* This setting is invalid for a system equipped with the Air to Air Heat Exchanger with DX Coil Unit only.
• Select [4C] in step 3 on page 18.
• Select a value from the table on the below in step 4 on page 19 according to the preferred time.
Setting for linked operation with external devices
Specifies the operation of the Air to Air Heat Exchanger with DX Coil Unit linked with the ON/OFF operation of
external devices
* For group operation, adjust this setting for the Air to Air Heat Exchanger with DX Coil Unit to which the remote
ON/OFF adapter (NRB-1HE: sold separately) is connected.
• Select [4E] in step 3 on page 18.
• Select a value from the table on the below in step 4 on page 19.
Ventilation mode setting
The setting of the ventilation mode can be changed when using the remote controller for air conditioners
(RBC-AMT32E).
* Adjusting this setting is necessary for the header unit when using a system equipped with the Air to Air Heat
Exchanger with DX Coil Unit only (RBC-AMT32E can not be used.), and for the Air to Air Heat Exchanger with
DX Coil Unit with the smallest address number when using a system equipped with the Air to Air Heat Exchanger
with DX Coil Unit and air conditioners.
* When the remote controller NRC-01HE is installed, this setting is invalid. (The remote controller can be used for
operation.)
• Select [EA] in step 3 on page 18.
• Select a value from the table on the below in step 4 on page 19.
Code
SET DATA
0000
0001 to 0048
4C
Nighttime heat purge
0000: Invalid
(Factory default)
Start after [Setting value] x 1
hour(s)
Code
SET DATA
0000
0001
0002
4E
Linked operation with external
devices
ON/OFF linked
(Factory default)
ON linked
OFF linked
0000: The Air to Air Heat Exchanger with DX Coil Unit starts / stops together with the starting / stopping of an external
device. (The latter operation of the remote controller or the switch of the external device overrides the former.)
0001: The Air to Air Heat Exchanger with DX Coil Unit starts together with the starting of an external device. Use the
remote controller to stop operation.
0002: The Air to Air Heat Exchanger with DX Coil Unit stops together with the stopping of an external device. Use the
remote controller to start operation.
Code
SET DATA
0001
0002
EA
Changing the ventilation mode
Heat Exchange mode
Automatic mode
(Factory default)
Ventilation Fan speed setting
The setting of the ventilation Fan speed can be changed when using the remote controller for air conditioners
(RBC-AMT32E, RBC-AMS41E) or using the system without the remote controller.
* Adjusting this setting is necessary for the header unit when using a system equipped with the Air to Air Heat
Exchanger with DX Coil Unit only (RBC-AMT32E can not be used.), and for the Air to Air Heat Exchanger with
DX Coil Unit with the smallest address number when using a system equipped with the Air to Air Heat Exchanger
with DX Coil Unit and air conditioners.
* When the remote controller NRC-01HE is installed, this setting is invalid. (The remote controller can be used for
operation.)
• Select [EB] in step 3 on page 18.
• Select a value from the table on the below in step 4 on page 19.
* When [0004] is selected, adjust setting of the unbalanced ventilation Fan speed (Code: 48).
Setting for changing the operation output
Terminal 1 and 2 on terminal block 3 for external devices can be used to connect an auxiliary fan or to use the
operation output for operating external devices connected to the terminal. It can be specified when the operation
output is used.
* Apply this setting for the Air to Air Heat Exchanger with DX Coil Unit to which an external device is connected.
• Select [ED] in step 3 on page 18.
• Select a value from the table below in step 4 on page 19.
* Contact is off during switching the damper (Heat exchange mode / Bypass mode) regardless of the selected
value.
Code
SET DATA
0002
0003
0004
EB
Changing the ventilation
amount
High
(Factory default)
Low
Unbalanced
Code
SET DATA
0000
0001
0002
0003
0004
ED
Changing the
operation
output
ON during
normal
operation
(Factory
default)
ON during
normal
operation or
nighttime heat
purge operation
ON during
nighttime heat
purge operation
ON when SA
fan is running
ON when EA
fan is running
0000: Contact is on only during normal operation.
* Contact is off during nighttime heat purge operation.
* Contact is off during cold mode (while the temperature is below -10 °C)
0001: Contact is on during normal operation and nighttime heat purge operation.
* Contact is off when nighttime heat purge operation is on standby. (paused before the monitoring operation of
nighttime heat purge operation starts)
* Contact is off during cold mode (while the temperature is below -10 °C)
0002: Contact is on during nighttime heat purge operation.
* Contact is off during normal operation or when nighttime heat purge operation is on standby. (paused before the
monitoring operation of nighttime heat purge operation starts)
* Contact is off during cold mode (while the temperature is below -10 °C)
0003: Contact is on only when SA fan is running.
0004: Contact is on only when EA fan is running.
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+00ET99805001-2.book Page 21 Tuesday, July 26, 2011 1:39 PM
