Air Cleaners and Filters:Clogged-Filter Indicator

Clogged-Filter Indicator

The clogged-filter indicator shown in Figures 12-13 and 12-14 is used with Trane electronic air cleaners to sense pressure conditions in the blower chamber between the unit and the blower. An increase in pressure indicates a clogged filter, and this condition will be indicated by the light on the room thermostat control (see Figure 12-12) or when the clogged-filter indicator on the furnace shows red.

The clogged-filter indicator should be located on a rigid sheet- metal mounting surface to prevent bumps or other vibrations from tripping the indicator. It should also be located where it can prop- erly sense the pressure conditions.