
– 2 –
Adoption of New Refrigerant
This Air Conditioner is a new type which adopts a new refrigerant HFC (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
WARNING
Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to
have a service person do it. Do not attempt it yourself.
The cleaning diagram for the air filter is there for the service person, and not for the customer.
CONTENTS
SAFETY CAUTION ............................................................................................ 4
1. SPECIFICATIONS ...................................................................................... 9
1-1. 4-Way Air Discharge Cassette Type ................................................................................ 9
1-2. Under Ceiling Type ......................................................................................................... 10
1-3. High Wall Type ................................................................................................................. 11
2. CONSTRUCTION VIEWS (EXTERNAL VIEWS)....................................... 12
2-1. 4-Way Air Discharge Cassette Type .............................................................................. 12
2-2. Under Ceiling Type ......................................................................................................... 15
2-3. High Wall Type ................................................................................................................. 18
3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM .............................. 20
3-1. 4-Way Air Discharge Cassette Type / Under Ceiling Type ........................................... 20
3-2. High Wall Type ................................................................................................................. 21
4. WIRING DIAGRAM ................................................................................... 22
4-1. 4-Way Air Discharge Cassette Type .............................................................................. 22
4-2. Under Ceiling Type ......................................................................................................... 23
4-3. High Wall Type ................................................................................................................. 24
5. SPECIFICATIONS OF ELECTRICAL PARTS .......................................... 25
5-1. 4-Way Air Discharge Cassette Type .............................................................................. 25
5-2. Under Ceiling Type ......................................................................................................... 25
5-3. High Wall Type ................................................................................................................. 26
6. REFRIGERANT R410A ............................................................................ 27
6-1. Safety During Installation/Servicing ............................................................................. 27
6-2. Refrigerant Piping Installation .................................................................................... 27
6-3. Tools ................................................................................................................................ 31
6-4. Recharging of Refrigerant ............................................................................................. 31
6-5. Brazing of Pipes ............................................................................................................. 32