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2.2.2 Range of usage & limitations
Model
Item
FDCVA302~602
FDCVA802, 1002
Indoor return air temperature
(Upper, lower limits)
Outdoor air temperature
(Upper, lower limits)
Indoor unit atmosphere (behind ceiling)
temperature and humidity
Refrigerant line (one way) length
Vertical height difference between
outdoor unit and indoor unit
Difference in height between indoor units
Difference in after branch piping lengths
between indoor units
Power source voltage
Voltage at starting
Cycle Time
Stop Time
Compressor
ON - OFF
Frequency
Please see the next page.
Dew point temperature: 28ºC or less, relative humidity: 80% or less
Max. 50m
Max. 70m*
Max. 20m
Max. 10m
Max. 30m (Outdoor unit is higher)
Max. 15m (Outdoor unit is lower)
Rating
±
10%
Max. 0.5m
Min. 85% of rating
7 minutes or more (from OFF to OFF) or (from ON to ON)
3 minutes or more
Operating temperature
When used under -5ºC, install a snow hood (option).
The outline drawing contains restrictions concerning the installation space.
Install the indoor unit 2.5m or above higher than the floor surface.
Installation site
Notes (1) Do not install the unit at the following places.
• Places exposed to oil splashes or steam (e.g. kitchens and machine plants).
• Places where infl ammable gas may leak.
• Places containing a great amount of sulfi de gases (e.g. hot spring area).
• Places directly exposed to sea breeze (e.g. coastal area).
• Places containing acid or alkaline air.
• Places adjacent to equipment generating electromagnetic waves or high-frequency waves.
• Places sucking the exhaust gas from heat exchanger.
• Do not install the unit on an object moistened with water.
• Places where carbon fi ber and metal particles, powder, etc. are fl oating.
• Places where chimney smoke is hanging.
• Places at an elevation of 1000m and above.
• Places splashed with water (laundry room, etc.).
• The indoor unit is not protected against water penetration.
• Do not install indoor units of twin, triple and double-twin specifi cations separately in a room with partition.
(2) If ambient temperature and humidity exceed the above values, please add polyurethane foam insulation to the outer plate (t10 and above).
(3) Please set the lower limit of one-way piping length to 5m and above.
(4) When ø22.22 gas pipe is used for piping lengths with the * mark, let the maximum one-way length be 30m.
