Outdoor Air Intake; Uv Lights - Honeywell F300E Guide D'installation

Outdoor Air Intake

Return air temperature must be at least 40°F (4°C). Lower temperatures can cause ionizer wire failure. If outdoor
air is used, warm it upstream from the air cleaner by:
• Making sure the outdoor intake is far enough upstream from the air cleaner so the return and outdoor air is
thoroughly mixed. Stratified air can dump a stream of very cold air into one section of the air cleaner.
• Adding baffles upstream from the air cleaner to force thorough air mixing.
• Installing a Honeywell TrueFRESH™ Fresh Air Ventilation System that transfers up to 80 percent of the heat
from the exhaust air to the incoming outside air. This keeps the incoming air above 40°F (4°C) and reduces
energy usage.
• Installing a preheater if large amounts of outdoor air are used. The preheater, which could be an electric strip
heater or hot water coil, should be controlled by a thermostat. Hot water or steam coils should be protected
by a freeze-up control.

UV Lights

Germicidal UV lights can cause degradation of the media postfilter. The UV light should be located out of line of
sight or a minimum of 3 feet from the filter. Otherwise the filter may need to be replaced more frequently.
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F300 Electronic Air Cleaner 68-0240EF—08