Step 4—Humidifiers
An evaporative humidifier can be mounted upstream of air cleaner.
It is best to install atomizing humidifier downstream of air cleaner
because hard water salt deposits and water droplets may damage
air cleaner. If an atomizing humidifier must be mounted upstream
of air cleaner:
1. Mount it as far upstream as possible. (Recommend at least 6
ft.)
2. Install standard disposable furnace filter between humidifier
and air cleaner to trap water droplets and hard water salts.
Select location that is accessible for inspection and replace-
ment.
3. Clean air cleaner more frequently to prevent hard water salt
buildup.
Step 5—Outdoor Air
When outdoor air is added to return air duct, sufficient heat should
be added to maintain return air temperature at 40°F (4°C)
minimum. Lower temperatures can cause ionizer wire failure.
Step 6—Sheet Metal Installation
The electronic air cleaner is adaptable to all new and existing
residential forced-air furnace and cooling systems.
Step 7—Transitions
If air duct does not fit air cleaner cabinet opening, gradual
transitions are recommended to reduce air turbulence through air
cleaner and maximize efficiency. Not more than 20° (about 4 in.
per running ft) of expansion should be used on each side of
transition fitting. (See Fig. 4.)
Step 8—Turning Vanes
If air cleaner is installed adjacent to a 90° duct elbow, add turning
vanes inside duct to improve air distribution across face of air
cleaner. (See Fig. 5.)
Step 9—Select Location
Remember to select a location that is readily accessible for
periodic inspection and cleaning. Allow a minimum of 18-in.
clearance in front of access panel and 12-in. clearance above
power rack cover plate for component removal and service space.
For complete dimensions required refer to Fig. 6.
Step 10—Direction of Airflow Through Air Cleaner
NOTE:
Air cleaner is set up for left-to-right airflow when facing
access door. For right-to-left airflow remove prefilters and cells
from cabinet.
1. A plastic positioning spacer is located inside bottom of cabinet
and secured to cabinet using No. 6-32 round head Phillips
drive thread cutting screw (See Fig. 7.) to index installation of
cells in proper position with respect to airflow.
2. Remove screw and reposition spacer in alternate hole at
bottom of cabinet.
3. Replace screw to insure plastic spacer is not accidentally
knocked out of place during normal maintenance. It must be
installed in hole provided closest to air leaving side of cabinet.
4. Seal unused hole with duct tape.
5. Turn cells around, replace in cabinet, and replace prefilters on
air entering side. Directional arrows on cell end plates must
point in direction of airflow.
Only a trained, experienced service person should install this
electronic air cleaner. The power supply should be removed
before installation. To remove the power supply, remove the
2 screws (See Fig. 8.) in the top front of the cabinet.
Remember to keep this hardware for reinstallation of the
power supply when the air cleaner installation is complete. A
thorough check of the unit installation should be completed
before unit operation.
INSTALLATION
Step 1—Orientation
Air cleaner can be in any position, except with access door facing
down. See Fig. 9-14 for proper air cleaner mounting with variety
of furnace installations.
Fig. 3—View of Major Components
A97056
CABINET
COLLECTING CELLS
PRE-FILTER
POWER
SUPPLY
ASSEMBLY
ON-OFF
SWITCH
CONTACT
INDICATING LIGHTS
ACCESS DOOR
3