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GENERALAire
ENGLISH INSTALLATION INSTRUCTIONS
INSTALLER: PLEASE FILL OUT AND MAIL GUARANTEE CARD AFTER INSTALLATION
IS COMPLETE. LEAVE INSTALLATION INSTRUCTIONS WITH HOME OWNER
PRECAUTION: The installer should be an experienced service technician. Disconnect electrical power before
beginning installation. Do not install where temperatures fall below 32 degrees F or where plenum temperatures
exceed 200 degrees F.
INSTALLATION: The humidifier may be mounted on the
horizontal warm air duct only.
See Typical Installation.
The following illustrations show steps for installing the
humidifier on the horizontal supply duct of a forced warm
air furnace. For maximum output, install the humidifier
perpendicular to the air flow as shown. On supply ducts
less than 16" wide the humidifier may be mounted parallel
to the air flow, but will have reduced evaporative output.
1
Select a location on the bottom surface of the warm air supply
duct for mounting the humidifier. The mounting position
should be at least 24" from the vertical supply plenum. Apply
the mounting template.
3
Install the right angle metal baffle on the upper inside surface
of 8" or deeper supply ducts. Position the baffle 1" upstream
from the centerline of the rotating drum. Mark and drill two
1/8" holes. Mount the baffle with the two sheet metal screws
provided. For maximum evaporative output the 2" leg of the
baffle should extend down.
R
R
A
T
ESIDENTIAL
IR
REATMENT
2
4
P
RODUCTS
WARM AIR
Center punch and drill the 6 mounting holes with a 1/4" drill.
Cut out center section of template. Remove remaining
template. Place mounting bracket inside duct with the 6
mounting studs down through the 1/4" holes. THE LONG
STUDS HOLD THE MOTOR END OF THE HUMIDIFIER.
Push two flat push-nuts on the central studs to hold the
mounting bracket in place.
Place humidifier on the mounting studs and fasten in place
with the six thumb nuts supplied.
MODEL 747-L
DUCT MOUNT
DRUM HUMIDIFIER
FOR INSTALLATION ON
THE HORIZONTAL SUPPLY
DUCT OF ANY FORCED
WARM AIR FURNACE
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Table of Contents
Related Manuals for GeneralAire 747-L
Summary of Contents for GeneralAire 747-L
- Page 1 GENERALAire MODEL 747-L ESIDENTIAL REATMENT RODUCTS DUCT MOUNT ENGLISH INSTALLATION INSTRUCTIONS DRUM HUMIDIFIER INSTALLER: PLEASE FILL OUT AND MAIL GUARANTEE CARD AFTER INSTALLATION FOR INSTALLATION ON IS COMPLETE. LEAVE INSTALLATION INSTRUCTIONS WITH HOME OWNER THE HORIZONTAL SUPPLY DUCT OF ANY FORCED PRECAUTION: The installer should be an experienced service technician.
- Page 2 COPPER TUBING PLASTIC TUBING Mount the self tapping saddle valve on either a cold or a hot water pipe. A side or top mount is best to avoid clogging NOTE: If overflow protection is required, slide 5/8" I.D. vinyl from pipe sediment. Connect 1/4” O.D. tubing to the saddle tube (Pt.
- Page 3 ELECTRICAL NOTE: The humidifier has a built-in "Humidity Control" which is an adjustable thermostat that completes the humidifier motor circuit on rising duct temperature. The thermostat senses the peaks and valleys of the modulating duct temperature caused by the furnace heating cycle. When the control is set on "HIGH", the humidifier will operate a greater percentage of the furnace cycle;...
- Page 4 LIMITED WARRANTY This humidifier, if properly registered by the return of the warranty registration card to the manufacturer, is warranted to the consumer against defects in materials and workmanship for a period of one year from the date of installation. Evaporator pads, sleeves or plates are not covered by this limited warranty or any other warranties.
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