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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
CAUTION
New Refrigerant Air to Air Heat Exchanger with DX Coil Unit Installation
• THIS Air to Air Heat Exchanger with DX Coil Unit ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES
NOT DESTROY OZONE LAYER.
• The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is
approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also
been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does
not enter the refrigerating cycle.
• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of
the main unit and installation tools are changed from those for the conventional refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant (R410A).
• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not
enter.
To Disconnect the Appliance from Main Power Supply.
• Means for disconnection having a contact separation in all poles at least 3 mm must be incorporated in the fixed wiring
in accordance with the wiring rules.
The installation fuse (All Types Can Be Used) must be used for the power supply line of this Air to Air
Heat Exchanger with DX Coil Unit.
2
Accessory Parts
Separately sold parts
The remote controller (NRC-01HE) is sold separately. For the installation of these products, follow the installation
manual supplied with it.
Name
Quantity
Shape
Usage
Installation manual
1
This manual
(Be sure to hand it to the customers.)
CD-ROM
(Owner’s manual,
Installation manual)
1
—
(For other languages that do not appear in this manual,
please refer to the enclosed CD-ROM.)
Owner’s manual
1
—
(Be sure to hand it to the customers.)
Insulation
1
For strainers
Insulation
4
For insulation of hanging brackets
Insulation
1
For water supply pipes
Duct connectors
4
Connector with ducts
Screws
24
For duct connectors
7-EN
8-EN
