Air to Air Heat Exchanger
Before performing a test run
• Before turning on the power supply, carry out the following procedure.
Using 500 V-megger, check that resistance of 1 MΩ or more exists between the terminal block of the power
supply and the earth (earthing).
If resistance of less than 1 MΩ is detected, do not run the unit.
• When a test run is performed together with air conditioners, follow the Installation Manuals of the air conditioners.
Performing a test run of the Air to Air Heat Exchanger using the
remote controller (NRC-01HE)
Confirm that the unit operates properly referring to the Owner's Manual of the Air to Air Heat Exchanger.
1. Starting operation
2. Changing the
3. Changing the
4. Stopping operation
AMP Air Conditioning
The operation lamp lights up, then the
Air to Air Heat Exchanger starts
Each time the ventilation mode button
is pressed, the mode changes as
Each time the ventilation amount
button is pressed, the ventilation
amount changes as follows:
is displayed only
when the imbalanced ventilation
Fan speed is valid.
The operation lamp goes off, then the
Air to Air Heat Exchanger stops
Air to Air Heat Exchanger
Running the Air to Air Heat Exchanger for a long period
causes the filter or heat exchange element to become
clogged with dust. If the filter or heat exchange element
is clogged, the ventilation amount is reduced and
ventilation effect will be deteriorated.
Clean the filter and heat exchange element regularly
according to the extent of dust accumulation.
Before performing maintenance, stop the unit, then
turn off the breaker.
• Otherwise, an electric shock or injury may result.
Do not pour or spray water or detergent on the
• Otherwise, an electrical leakage may occur and a fire
or electric shock may result.
Wear protective gloves when performing
• Otherwise, an injury may result.
Maintenance of the filter and
heat exchange element
◆ Filter maintenance (Clean the filter
once or twice a year.)
Clean the filter if
is indicated on the
button after cleaning the filter.
– 22 –
Open the inspection cover.
Enter the ceiling cavity remove the screw of fixed
part of Inspection cover and remove the fixing
lever (support the inspection cover while removing
the brackets), then open the inspection cover.
Fixed part of
Pull out the heat exchange elements.
Filters are attached to the heat exchange element.
Hold the handle of the heat exchange element,
then pull it out.
* 2 heat exchange elements are equipped with
The table below shows the weight of each heat
exchange element. Handle the heat exchange
element carefully so as not to drop it.
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