Ducting; Transitions; Turning Vanes; Offsets - Honeywell F300 Professional Installation Manual

Ducting

The Electronic 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 air
cleaner operation.

Transitions

For most efficient air cleaning, spread airflow evenly
across the face of the air cleaner. If the duct is a
different size than the electronic air filter cabinet,
gradual transitions are required. Follow these
guidelines when fabricating:
• Use gradual transitions to reduce air turbulence and
increase efficiency.
• 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 Electronic 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
cell.

Offsets

If the duct connection to the furnace in a side
installation allows less than 7 in. (178 mm) for mounting
Electronic Air Cleaner cabinet, attach an offset to the
elbow.
F300 Electronic Air Cleaner 68-0240EF—07
68-0240EF_B.indd 5
DUCT SIZE CHANGED GRADUALLY TO PREVENT TURBULENCE.
20 DEGREE EXPANSION PER SIDE PER
FITTING (4 IN. PER RUNNING FOOT
[100 MM PER 300 LINEAR MM])
RETURN AIR
DUCT
TRANSITION FITTING
ELECTRONIC AIR CLEANER CABINET
LESS
THAN
7 in.
(178 mm)
1 REQUIRED TURNING VANES HELP DISTRIBUTE AIRFLOW EVENLY.
M947B
TURNING
VANES
LOCKING
PLIERS
M20815
OFFSET
AT LEAST
7 in.
1
(178 mm)
M948B
5
9/14/11 3:04 PM