GeneralAire 747L Installation Guide

RESIDENTIAL AIR TREATMENT PRODUCTS

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.

WARM AIR

DUCT MOUNT

DRUM HUMIDIFIER

FOR INSTALLATION ON

THE HORIZONTAL SUPPLY

DUCT OF ANY FORCED

WARM AIR FURNACE

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.

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.

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.

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 1O0 foot lengths.

COPPER

TUBI NG

PLASTIC
TUBI NG

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 open saddle valve, leave open for
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 open saddle valve, leave open for
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 open saddle valve, leave open for
several seconds to flush dirt from pipe and tubing.

Connect the W' 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.

RESIDENTIAL AIR TREATMENT PRODUCTS

DIRECTIVES D'INSTALLATION EN FRAN(_AIS

INSTALLATEUR : VEUILLEZ REMPLIR ET POSTER LA CARTE DE GARANTIE UNE FOIS L'INSTALLATION

TERMINEE. LAISSER LES DIRECTIVES D'INSTALLATION AU PROPRIETAIRE DE LA MAISON,

PRECAUTION • L'installateur doit etre un technicien qualifie et experiment& Couper I'alimentation electrique avant

de commencer I'installation. Ne pas installer I'appareil dans un endroit oQ la temperature peut descendre sous
0 °C (32 °F) ou si la temperature du plenum depasse 93 °C (200 °F).

INSTALLATION: L'humidificateur ne peut etre monte que

sur le conduit d'air chaud horizontal.

! MODI LE747-L

HUMIDIFICATEUR .&TAMBOUR

MONTE SUR CONDUITS

POUR INSTALLATION SUR LE

CONDUIT DE DISTRIBUTION

HORIZONTAL DE TOUTES LES

FOURNAISES A AIR CHAUD PULSE

Les illustrations suivantes indiquent les etapes de
I'installation de I'humidificateur sur le conduit de distribution

horizontal d'une fournaise & air pulse. Pour un rendement
maximal, installer I'humidificateur perpendiculaire au debit

d'air tel qu'indiqu& Pour les conduits de moins de 16 po de

large, I'humidificateur peut etre monte parallele au debit

d'air, mais le rendement en vapeur en sera reduit.

Choisir un emplacement sur la surface du fond du conduit
d'approvisionnement d'air chaud pour installer

I'humidificateur. La position de montage devrait etre &au
moins 24 po du plenum d'air chaud vertical. Appliquez

matrice de montage.

AIR CHAUD

Marquer au pointeau et percer les 6 trous de montage & I'aide

d'un foret de 1/4 po. Decouper la section centrale de la matrice.

Retirer le restant de la matrice. Poser le support de montage &

I'interieur du conduit & I'aide des 6 montants & travers les trous
de 1/4 po. LES MONTANTS LONGS SOUTIENNENT

L'HUMIDIFICATEUR D,L'EXTREMITE DU MOTEUR. Appuyer
deux ecrous capuchon plats sur les montants centraux afin de
tenir le support de montage en place.

Installer le deflecteur en metal & angle droit sur la surface
superieure interieure des conduits d'alimentation de plus de 8

po. Positionner le deflecteur & 1 po en amont de la ligne
centrale du tambour rotatif. Marquer et percer deux trous de

1/8 po. Monter le deflecteur avec les 2 vis taraudeuses
fournies. Pour un rendement de vapeur maximal, le pied de 2

po du deflecteur devrait etre oriente vers le bas.

Poser I'humidificateur sur les montants et fixez-le en place &
I'aide des 6 ecrous & ailettes fournis.