Pioneer LISAS-B-1403 Service Manual page 54

Features
1.4. Four air inlets
1.5. Low noise
 DC indoor fan motor, which has five speeds.
 Low noise and energy saving.
 Advanced centrifugal fan technology makes a fast airflow and reduces the indoor noise lower to 28dB.
1.6. Golden fin is optional.
1.7. Active carbon filter is standard
52 Indoor Units