Specifications

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400,A / 600,A,M
Large Bypass Humidifiers
Description: Model 400 (Drainless)
Specifications:
158400 EA 16
400 Aprilaire Humidifier ( Drainless ) ( While Supplies Last )
158401 EA 16
400A Aprilaire Humidifier ( Drainless ) ( Includes Auto-Digital Control )
158600 EA 24
600 Aprilaire Humidifier ( While Supplies Last )
158601 EA 24
600A Aprilaire Humidifier ( Includes Auto-Digital Control )
158602 EA 24
600M Aprilaire Humidifier ( Includes Manual Control )
ACE # PK UM DESCRIPTION
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Volume of Home (cubic feet)
x Loose home 1,000—2 air changes per hour
x Average home 2,000—1 air change per hour
x Tight home 4,000—1/2 air change per hour
Standard Rating Conditions
x Outside air; 20°F and 70% R.H.
x Inside air; 70°F and 35% R.H.
x Internal moisture gain; 1 pound/hour
x 70% blower operation
x 8 Ft. ceiling height
Size
x 15-3/8" wide x 15-3/4" high x 10-1/4" deep
Water Feed Rate
x 3 gph
Electrical Data
x 24 volt 60 Hz. 0.5 amp
Also Included
x Humidistat and Saddle Valve
The Aprilaire Model 400 Whole-House Humidifier
features a built-in bypass damper and utilizes new
evaporative technology to minimize water use.
Gravity pulls water down, while the wicking action of
the Water Panel
®
draws it back to the top, using
100% of the water delivered to the unit. It features
truly automatic control, has an evaporation capacity
of 0.70 gallons per hour and also humidifies
tightly-constructed homes up to 4,000 square feet
in size. It eliminates standing water, making it the
perfect choice for homes with septic systems,
locations where a floor drain is not available or
families interested in water conservation.
Description: Model 600 (All Season)
The Aprilaire Model 600 Whole-House Humidifier
features truly automatic control, plus a built-in
bypass damper, which means fewer parts to install. It
uses the furnace blower to move air through a water
panel, where the humidification process occurs.
Humidified air is then distributed to the home. The
bypass damper is conveniently labeled for both
summer and winter settings, allowing you to set it
for the entire season with no guesswork involved. It
delivers up to 50% more moisture in comparison to
competitive units, has as an evaporation capacity of
0.70 gallons per hour, humidifies tightly-
constructed homes up to 4,000 square feet in size
and features the same performance benefits of other
Aprilaire humidifiers.
The Aprilaire Humidifiers use humidity in the form of
water vapor to prevent minerals from entering the air
stream in the home. Water is supplied to the
distribution tray, allowing it to flow evenly across the
Water Panel
®
. The resulting humidified air is
distributed throughout the entire home.
How It Works: