F150E MEDIA AIR CLEANER
68-0245EF-3
6
Determining Sheetmetal Requirements
The media air cleaner is adaptable to all new or existing
forced air heating and cooling systems used in residential
applications. Transitions or turning vanes may be required in
some applications for effective media air cleaner operation.
Transitions
Transitions are needed when the duct is a different size than
the media air cleaner cabinet. When fabricating:
1.
Use gradual transitions to reduce air turbulence and
increase efficiency. See Fig. 11.
2.
Use no more than 20 degrees (about 4 in. per running ft.
(100 mm per 300 linear mm) of expansion on each side
of a transition fitting.
Turning Vanes
If the media air cleaner is installed next to an elbow or angle
fitting, add turning vanes inside the angle to distribute airflow
more evenly across the face of the media. See Fig 12.
Offsets
If the duct connection to the furnace in a side installation
allows less than 7 in. (178 mm) for mounting media air cleaner
cabinet, attach an offset to the elbow. See Fig. 13.
Fig. 11. Duct size changed gradually to prevent
turbulence.
Fig. 12. Turning vanes installed in bend help distribute
airflow evenly over face of media.
Fig. 13. Typical use of duct offset to make room for
media air cleaner.
INSTALLATION
When Installing this Product…
1.
Read these instructions carefully. Failure to follow them
could damage the media air filter or cause a hazardous
condition.
2.
Check the ratings given in the instructions and on the
media air cleaner to make sure the product is suitable
for your application.
3.
Installer must be a trained, experienced service techni-
cian.
Remove Furnace Filter And Clean Blower
Compartment
Before starting the installation, remove and discard the
existing furnace filter (if used). Thoroughly clean the blower
compartment. If possible, power vacuum the ductwork to
remove accumulated dust in an occupied home or remove
construction dirt in a new home. The media air cleaner cannot
remove dirt that has settled in the blower compartment and
distribution ducts.
Install The Cabinet
The following procedure describes a typical side installation
on an existing highboy furnace. Alternate procedures are
noted as appropriate. Other changes in installation
procedures may be necessary to complete your installation.
Review The Installation Plan
Temporarily place the cabinet on the floor, oriented as it will be
when installed. Insert and remove the cartridge to make sure
the plan allows adequate clearance for easy removal and
replacement of the cartridge.
Make sure that shop-fabricated sheetmetal components, such
as turning vanes, are available.
20 DEGREE EXPANSION PER SIDE PER
FITTING (4 IN. PER RUNNING FOOT
[100 MM PER 300 LINEAR MM])
RETURN AIR
DUCT
TRANSITION FITTING
MEDIA AIR CLEANER CABINET
M947B
DUCT SIZE CHANGED GRADUALLY TO PREVENT TURBULENCE.
TURNING
VANES
M5651
M948A
LESS
THAN
7 in.
(178 mm)
OFFSET
AT LEAST
7 in.
(178 mm)
1
1 REQUIRED TURNING VANES HELP DISTRIBUTE AIRFLOW EVENLY.
