ENGLISH INSTALLATION INSTRUCTIONS
1
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.
GENERALAire
RESIDENTIAL AIR TREATMENT PRODUCTS
FOR INSTALLATION ON
THE HORIZONTAL SUPPLY
DUCT OF ANY FORCED
WARM AIR FURNACE
INST ALL ER: PLEASE FILL OUT AND MAIL GUARANTEE CARD AFTER INSTALLATION
IS COMPLETE. LEAVE INSTALLATION
INSTRUCTIONS WITH HOME OWNER
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.
2
MODEL 747-L
DUCT MOUNT
DRUM HUMIDIFIER
R
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.
Place humidifier on the mounting studs and fasten in place
with the six thumb nuts supplied.
4
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.
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.
Top Of Template
TEMPLATE FOR INSTALLING
GENERAL "747-L" HUMI
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WARM AIR
5
NOTE: If overflow protection is required, slide 5/8" I.D. vinyl
tube (Pt. No. 1099-16) over quick-drain spout and run to
suitable drain connection. Use a strain relief clamp within 36"
of humidifier to prevent drain tube from pulling on quick-drain.
Drain tube is not supplied with humidifier but is available in 5,
15 and 100 foot lengths.
6
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
from pipe sediment. Connect 1/4” O.D. tubing to the saddle
valve. Copper tubing requires a brass compression nut and
brass sleeve. Plastic tubing requires a brass insert inside the
tubing, a plastic sleeve on the outside with a brass
compression nut.
NOTE: DO NOT USE PLASTIC TUBING ON HOT WATER
OR IN CONTACT WITH ANY HOT PLENUM SURFACE OR
DUCT. INSTALLATION OF THIS SADDLE VALVE MUST
MEET OR EXCEED LOCAL CODES AND ORDINANCES.
SADDLE VALVE INSTALLATION INSTRUCTIONS
Copper Pipe
1. Retract piercing pin into valve body by turning handle
counterclockwise.
2. Screw valve body into upper bracket and tighten.
3. Place rubber gasket over piercing pin.
4. Assemble saddle valve over copper pipe using enclosed screws,
nuts and lower bracket.
5. Tighten screws evenly and firmly. Brackets should be parallel.
6. Complete compression connection to saddle valve outlet.
7. Turn handle clockwise to pierce tubing and close saddle valve.
8. Turn handle counterclockwise to
several seconds to flush dirt from pipe and tubing.
Steel, Brass or Hard Plastic Pipe
1. Shut off water supply and drain pipe.
2. Turn handle clockwise to expose piercing pin and close saddle valve.
3. Place rubber gasket over piercing pin.
4. Drill 1/8" hole in pipe using a hand crank drill to avoid shock hazard.
5. Assemble saddle valve over steel, brass or hard plastic pipe using
enclosed screws, nuts and lower bracket.
6. Tighten screws evenly and firmly. Brackets should be parallel.
7. Complete compression connection to saddle valve outlet.
8. Turn handle counterclockwise to
several seconds to flush dirt from pipe and tubing.
Threaded Pipe Fittings
1. Turn handle clockwise to expose piercing pin and close saddle valve.
2. Seal valve body threads using pipe tape or sealant.
3. Install valve into 1/8" NPT fitting.
4. Complete compression connection to saddle valve outlet.
5. Turn handle counterclockwise to
several seconds to flush dirt from pipe and tubing.
open saddle valve, leave open for
open saddle valve, leave open for
open saddle valve, leave open for
7
Connect the water supply tubing to the humidifier. Copper
tubing requires a brass compression nut and brass sleeve.
Plastic tubing requires a brass insert inside the tubing, a
plastic sleeve on the outside with a brass compression nut.
DO NOT USE PLASTIC TUBING IN CONTACT WITH
ANY HOT PLENUM SURFACE OR DUCT. IF USING
PLASTIC TUBING, USE TUBE SUPPORT PROVIDED.