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ADOPTION OF NEW REFRIGERANT
This Fresh Air Intake Indoor Unit for S-MMS 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. OUTLINE OF FRESH AIR INTAKE INDOOR UNIT ................................... 9
1-1. S-MMS System Specifications to Connect Fresh Air Intake Indoor Unit ................. 10
2. SPECIFICATIONS .................................................................................... 12
2-1. Fresh Air Intake Indoor Unit for S-MMS ....................................................................... 12
3. SPECIFICATIONS OF ELECTRICAL PARTS .......................................... 13
3-1. Fresh Air Intake Indoor Unit for S-MMS ....................................................................... 13
4. OWNER’S MANUAL ................................................................................. 14
PARTS NAME ............................................................................................................................. 14
PARTS NAME OF REMOTE CONTROLLER ............................................................................. 15
CORRECT USAGE ..................................................................................................................... 17
TIMER OPERATION ................................................................................................................... 19
5. INSTALLATION MANUAL ........................................................................ 20
Accessory parts and Parts to be procured locally ................................................................ 20
1 PRECAUTIONS FOR SAFETY ....................................................................................... 20
2 SYSTEM CONTROL OF FRESH AIR INTAKE INDOOR UNIT ...................................... 22
3 SELECTION OF INSTALLATION PLACE ....................................................................... 23
4 INSTALLATION OF INDOOR UNIT ................................................................................ 25
5 DUCT WORK ................................................................................................................... 28
6 DRAIN PIPING WORK .................................................................................................... 31
7 REFRIGERANT PIPING .................................................................................................. 32
8 ELECTRIC WORK ........................................................................................................... 34
9 APPLICABLE CONTROLS ............................................................................................. 37
10 FAN CHARACTERISTICS ............................................................................................... 39
11 TEST RUN ....................................................................................................................... 46
12 TROUBLESHOOTING .................................................................................................... 47
13 MAINTENANCE .............................................................................................................. 48