Air to Air Heat Exchanger with DX Coil Unit
Owner’s Manual
Air to Air Heat Exchanger with DX Coil Unit
Owner’s Manual
– 8 –
EN
5
How to Use
When using the remote controller for the Air to Air Heat
Exchanger with DX Coil Unit (NRC-01HE)
When you use the Air to Air Heat Exchanger with DX Coil Unit for the first time or change the settings, operate the
remote following the procedure below.
From the next time, the unit starts running following the operation conditions you set by just pressing the
button.
◆
Preparation
Turning on the circuit breaker
When turned on, the separation lines appear and
blinks on the display of the remote controller.
* The remote controller will not work for about 1 minute after turning on the power. This is not a malfunction.
* To use a Air to Air Heat Exchanger with DX Coil Unit system linked with air conditioners, turn on the circuit
breaker for the air conditioners too.
REQUIREMENT
• Keep the circuit breaker turned on during use.
• For the Air to Air Heat Exchanger with DX Coil Unit system linked with air conditioners, when the system is used after
a long period of disuse, turn on the circuit breaker of the unit and air conditioners 12 hours or more before starting
operation.
Operations
1
Press the
buttons to start operation.
The operation lamp lights up.
REQUIREMENT
When the Air to Air Heat Exchanger with DX Coil Unit is
in a system linked with air conditioners, they start
running at the same time.
2
Push the “MODE
” button to select a
operation mode.
Each time the button is pushed, the operation
mode and its icon change in the following order:
3
Press the
buttons to stop operation.
The operation lamp turns off.
Changing ventilation fan
speed
1
Push the
button to select the ventilation
fan speed.
Each time the button is pushed, the speed and
indication changes as follows.
* The indications
and
are
displayed only when the air volume imbalance
setting is activated.
REQUIREMENT
As factory default, the air volume imbalance setting is
deactivated only [High] and [Low] are available for
selection. Consult your dealer to activate the setting.
1
2
Heat
Dry
Cool
Fan
(Dehumidify)
High
Low
SA>EA (SA<EA)
About air volume imbalance (
[SA>EA]/
[SA<EA])
For normal ventilation (High or Low):
The volumes of the indoor air supply and outdoor air
exhaustion are set to the same level.
For volume ventilation imbalance:
• When
[SA>EA] is selected: the volume of the
indoor air supply is larger than that of the outdoor air
exhaustion.
(Inflow of humidity and smells from the toilet and
kitchen is reduced.)
• When
[SA<EA] is selected: the volume of the
outdoor air exhaustion is larger than that of the
indoor air supply.
(Outflow of smells and floating bacteria into a
corridor or other places is reduced.
* Consult your dealer if the setting of the air volume
imbalance seems incorrect.
Changing ventilation mode
1
Push the
button to select a ventilation
mode.
Each time the button is pushed, the ventilation
mode and indication change as follows:
About ventilation modes
The unit has two ventilation modes.
•
Automatic mode
The heat exchange mode and the bypass mode* are
automatically switched between according to the
operation mode (cooling, heating, dry, ventilation),
setting temperature, or information from the indoor/
outdoor thermo sensor of the Air to Air Heat
Exchanger with DX Coil Unit.
•
Heat exchange mode
Exchanging heat between the outdoor and indoor air
and making the temperature and humidity of the
outdoor air closer to those of the indoor air before
supplying it.
*
Bypass mode (unavailable)
Outdoor air is taken into a room as it is. This mode is
mainly used in spring and summer.
CAUTION
If the outdoor temperature falls to 15°C or below in
[Automatic mode] the system will automatically start to
run in [Heat exchange mode] regardless of the mode
setting to prevent condensation in the Air to Air Heat
Exchanger with DX Coil Unit.
* The indication of the ventilation mode setting does not
change.
Changing the set temperature
1
Push the “TEMP.
” buttons.
Push
to increase the temperature, and
to
decrease the temperature. (The set temperature
cannot be changed in the fan mode.)
About the separate operation
of the Air to Air Heat
Exchanger with DX Coil Unit
in a system linked with air
conditioners
* The procedure below is not effective in a system
equipped with the Air to Air Heat Exchanger with DX
Coil Unit only.
1
Press the
button while the system is
running.
Only the Air to Air Heat Exchanger with DX Coil
Unit stops and the
indicator turns off.
2
Press the
button while the system is
stopped.
The
indicator lights up and the Air to Air Heat
Exchanger with DX Coil Unit starts running
separately.
NOTE
• Normally, the Air to Air Heat Exchanger with DX Coil
Unit ON/OFF as the air conditioner is ON/OFF when it
is in a system linked with air conditioners.
• If “
” is displayed when the
button is pushed,
change certain settings is necessary to operate the
unit separately. Consult your dealer to change the
settings.
Automatic mode
Heat exchange
mode
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+00ET99915201_00Ta.book Page 8 Tuesday, February 15, 2011 6:45 PM
