York ECO HFC-410A - Manual (Page 7)

FORM 100.50-EG5 (108)
7 JOHNSON CONTROLS
ACCESSORIES
Filter Switch – An optional dirty fi lter alarm can be pro-
vided that will provide an alarm when the fi lters require
cleaning.
Magnahelic Filter Pressure Gauge – On units
equipped with downstream fi ltration, a magnahelic fi lter
gauge is included and visible on the exterior of the unit.
The fi lter gauge measures the air pressure drop for
through the rigid fi lter bank to indicate when replace-
ment is required.