York YLAA Operation Manual page 19

Accessories and Options (Cont'd)
JOHNSON CONTROLS
SOUND ATTENUATION:
One or both of the following sound attenuation options are recommended for residential or
other similar sound sensitive locations.
Compressor Acoustic Sound Blanket – Each compressor is individually enclosed by an
acoustic sound blanket. The sound blankets are made with one layer of acoustical absor-
bent textile fiber of 5/8" (15mm) thickness; one layer of heavy duty anti-vibration material
thickness of 1/8" (3mm). Both are closed by two sheets of welded PVC, reinforced for tem-
perature and UV resistance.
Ultra Quiet Fans – Lower RPM, 8-pole fan motors are used with steeper-pitch fans.
Variable Speed Fans - Controls all the fans on the circuit. There is a drive installed for
each circuit. Available on both low sound and ultra quiet fans.
VIBRATION ISOLATION
Vibration Isolators – Level adjusting, spring type 1 inch (25.4mm), 2 inch (50.8 mm) de-
flection, or neoprene isolators for mounting under unit base rails. (Field installed)
FORM 150.72-EG6 (516)
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