FEATURES, SPECIFICATIONS AND BENEFITS MODEL 81

 MODEL 65

 MODEL 747-L
APPLICATION Drum-type humidifier with capacity for most homes. Installs on vertical warm air supply or cold air return (recommended) plenum. Drum-type humidifier designed for condominiums, town homes and smaller houses. Installs on vertical warm air supply or cold air return (recommended) plenum. Perfect choice when plenum mount is not possible. Drum-type humidifier mounts in any 16" wide horizontal warm air duct. (May be installed in 12" duct; output reduced.)
UNIT SIZE 12" wide x 11-1/2" high x 11" deep 10" wide x 9" high x 9-1/2" deep 12" wide x 16" high x 4" deep
PLENUM OPENING 8" wide x 7-1/2" high 7-3/4" wide x 5-3/4" high 10-1/2" wide x 15-1/8" high
BYPASS DUCT 6" diameter (Bypass Pipe Assembly Supplied) 5" diameter (Bypass Pipe Assembly Supplied) N/A
EVAPORATIVE OUTPUT CAPACITY @ .20" PRESSURE DIFFERENTIAL (except 747 rated at 800 FPM duct velocity) ABOVE AT STANDARD INDUSTRY RATING CONDITIONS
Temp ºF GPD
80º
100º
120º
140º
160º
 7.0
11.3
16.0
18.0
21.7
Temp ºF GPD
80º
100º
120º
140º
160º
 6.2
8.5
10.9
13.3
15.7
Temp ºF GPD
80º
100º
120º
140º
160º
 4.1
8.7
12.8
16.0
19.2
*@ 800 FPM duct velocity
EVAPORATIVE PRINCIPLE GENERALAire humidifers are 100% evaporative, adding moisture in the form of water vapor only. They are clean operating. The nuisance of airborne water droplets or mineral dust is avoided. Forced warm air heating systems create a pressure differential that diverts some heated air through a bypass duct to the humidifier. There, the warm air absorbs moisture from a water-soaked, drum-mounted evaporator sleeve and then rejoins the primary warm air stream for distribution throughout the living area. The drum-mounted evaporator sleeve picks up moisture as it slowly rotates in a water reservoir. A float valve controls the level of water in the reservoir. Forced warm air heating systems create a pressure differential that diverts some heated air through a bypass duct to the humidifier. There, the warm air absorbs moisture from a water-soaked, drum-mounted evaporator sleeve and then rejoins the primary warm air stream for distribution throughout the living area. The drum-mounted evaporator sleeve picks up moisture as it slowly rotates in a water reservoir. A float valve controls the level of water in the reservoir. Heated air in the system duct absorbs moisture as it passes across and through a water-soaked, drum-mounted evaporator sleeve on its way to the living area. The drum-mounted evaporator sleeve picks up moisture as it slowly rotates in a water reservoir. A float valve controls the level of water in the reservoir.
EVAPORATIVE MEDIA 81-15 Evaporator sleeve. Split drum allows easy separation for removal of polyurethane foam sleeve for cleaning. 65-5 Evaporator sleeve. Split drum allows easy separation for removal of polyurethane foam sleeve for cleaning. 727-12 Evaporator sleeve. Split drum allows easy separation for removal of polyurethane foam sleeve for cleaning.
WATER SUPPLY Unique, time-proven GENERALAire float valve assembly meters water into reservoir through precision machined orifice. Saddle valve and 1/4" plastic tubing included. Unique, time-proven GENERALAire float valve assembly meters water into reservoir through precision machined orifice. Saddle valve and 1/4" plastic tubing included. Unique, time-proven GENERALAire float valve assembly meters water into reservoir through precision machined orifice. Saddle valve and 1/4" plastic tubing included.
DRAIN CONNECTION N/A N/A Unique "quick drain" device permits easy draining to reduce mineral concentrations.
RANGE OF MODELS N/A N/A N/A
ELECTRICAL 24 V., .03 Amp, 60 Hz. (Transformer and hook-up wire supplied) 24 V., .03 Amp, 60 Hz. (Transformer and hook-up wire supplied) 24 V., .03 Amp, 60 Hz. (Transformer and hook-up wire supplied)
CONTROLS Manual air shutter for summer shut-off. Includes GENERALAire H-86 wall/duct mount humidistat. Manual air shutter for summer shut-off. Includes GENERALAire H-86 wall/duct mount humidistat. Manual control uses built-in thermostat to sense duct temperature and activate/deactivate unit to adjust output. Automatic humidistat is optional.
CONSTRUCTION, MATERIALS AND STYLING Modern cabinet molded of high temperature polymer. Sturdy gear motor and one-piece, corrosion proof reservoir for long service life. Modern cabinet molded of high temperature polymer. Sturdy gear motor and one-piece, corrosion proof reservoir for long service life. Sturdy gear motor and one-piece, corrosion proof reservoir for long service life.
VERSATILITY Unique design allows right or left hand installation by reversing drum and repositioning float valve, drive motor and bypass. May be installed on up-flow, counter-flow or horizontal furnaces or air handlers. Unique design allows right or left hand installation by reversing drum and repositioning float valve, drive motor and bypass. May be installed on up-flow, counter-flow or horizontal furnaces or air handlers. Mounts in ducts 16" or larger with evaporator sleeve perpendicular to air flow (preferred, for highest output) or in line to air flow in ducts 14" or smaller (for reduced output).
SERVICEABILITY Thumbscrews release removable front cover. Water tray slides out for easy cleaning. Thumbscrews release removable front cover. Water tray slides out for easy cleaning. "Quick drain" device empties reservoir prior to servicing. Unique built-in hinge allows unit to swing down for easy access.
EASY INSTALLATION - GENERALAire humidifers are specially designed for fast, easy installation Fully assembled with most important installation components included. Fully assembled with most important installation components included. Unique mounting bracket and most important installation components included.

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