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GENERAL INFORMATION
Your AB-1 Air Booster is designed to boost air flow to hard-to-heat or hard-to-cool rooms. READ THE
FOLLOWING INSTRUCTIONS CAREFULLY BEFORE ACTUALLY INSTALLING YOUR NEW AIR
BOOSTER.
INSTALLATION
1. The unit can be mounted on round ducts 5" in diameter and larger, or on rectangular or square
ducts 4" and wider and as shallow as 3".
2. Locate the Booster in the BRANCH DUCT supplying the problem room – where the duct is warm
to the touch while the furnace is operating. NOTE: Do not install the Air Booster where the
temperature of the air within the duct is above 200ºF. It is rare that this temperature is found in
forced warm air systems; however, it could exist on gravity warm air systems if mounted close to
the furnace. It is suggested that the Air Booster be located near the outlet end of the branch duct
for maximum performance. The same location will also apply to air conditioning.
3. On horizontal and inclined installations, the slot for the Air Booster can be cut in the bottom or top
of a horizontal duct. On vertical installations, the slot can be cut on any side of the duct. In either
horizontal or vertical installations, the motor shaft must be in a horizontal position.
4. To assure longer motor life, oil the motor twice a year with ONLY A FEW DROPS of SAE 20 oil.
Two oil holes are located and marked on top of the motor for this purpose. Please note these oil
hole locations prior to installation. If the AB-1 is to be operated continuously, the motor should be
lubricated every three months. NOTE: The motor used on the Air Booster is an accepted
component of the listed fan unit by UL, Inc. This motor is designed as a normally HOT running
motor and should feel hot to the touch. Tests indicate that a normal 50 Watt household
incandescent light bulb is considerably hotter than the maximum motor temperature of your Air
Booster. This motor temperature will not effect the performance of your Air Booster, provided
installation and mounting instructions outlined herein are observed.
MOUNTING INSTRUCTIONS
Once the location for the Air Booster is established, you are now ready to mount the unit as follows:
R
T
I
EAD
HESE
NSTRUCTIONS
1. Attach the mounting template to duct in desired location. (See No. 2 above.) Place mounting
template in the center of the selected duct for best performance.
2. Cut out the metal duct work along template lines according to the size duct you have. BE
CAREFUL NOT TO CUT OPENINGTOO LARGE.
3. After the duct work has been properly cut, insert the Air Booster lip INSIDE the duct opening, (See
Figs. 1 & 2) pushing the Air Booster housing forward and upward at the same time so that the Air
Booster housing fits snugly into the opening. The side flanges should be on the OUTSIDE of the
duct. (See Figs. 1 & 2) NOTE: Be certain that the Air Booster "Deflector Plate" (See Figs. 1 & 2),
which curves above the blower wheel, is pointing in the direction of the air flow.
4. With the housing pushed tightly against the duct, drill or punch four 3/32" holes into the duct using
the Air Booster side flange mounting holes as locators.
5. Fasten Air Booster to air duct with 4 sheet metal screws, pulling the Air Booster up snugly against
duct. If necessary, bend the side flanges (Figs. 1 & 2) to conform to your particular duct size and
shape.
Installation Instructions
C
:
AREFULLY
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