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F50E DUCT MOUNTED ELECTRONIC AIR CLEANER
68-0072—5
7
IN CLOSET INSTALLATION, AIR CLEANER MUST BE BELOW TOP OF
DOOR FRAME FOR CELL AND PREFILTER MAINTENANCE.
IF FLUE PIPE IS IN FRONT OF AIR CLEANER, ALLOW AT LEAST
13 IN. (0.3 M) CLEARANCE BETWEEN ACCESS DOOR AND FLUE PIPE.
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2
1
2
M4688
Fig. 9. Counterflow furnace. Air cleaner is mounted
horizontally in return duct or plenum just above furnace.
ALLOW AT LEAST 13 in. (0.3 m) CLEARANCE BETWEEN ACCESS DOORS
AND ANY OBSTRUCTION FOR CELL AND PREFILTER MAINTENANCE.
1
M4689
Fig. 10. High capacity system. Two or more air cleaners
can be used together. At least 13 in. (0.3m) clearance is
required between access doors and walls for cells
and prefilter maintenance.
Determine Sheetmetal Requirements
The air cleaner is adaptable to all new or existing residential
forced air heating, cooling and ventilating systems.
Sheetmetal transitions, turning vanes, or offsets may be
needed in some applications.
Transitions
Transitions are needed when the duct is a different size than
the air cleaner cabinet. Gradual transitions reduce air
turbulence and increase efficiency. Limit expansion to
20 degrees (about 4 in. per running foot [100 mm per 300
linear mm]) on each side of a transition fitting. See Fig. 11.
20 DEGREE EXPANSION
PER SIDE. PER FITTING
(4 IN. PER RUNNING
FOOT [100 MM PER
300 LINEAR MM])
RETURN AIR
DUCT
TRANSITION FITTING
AIR CLEANER
CABINET
M6026
Fig. 11. Change duct size gradually
to minimize turbulence.
Turning Vanes
If the air cleaner is installed close to an elbow or angle fitting,
install turning vanes inside the angle to distribute airflow more
evenly across the face of the cells. See Fig. 12.
TURNING
VANES
M5651
Fig. 12. Turning vanes installed in a bend help distribute
airflow evenly over the face of the electronic cells.