GeneralAire GA52F32 - Manual (Page 3)

Second, charged particles move into the collecting area
where they are attracted to a series of grounded plates.
Pollutants are held in this section like a magnet until
washed away during cleaning.
MAJOR COMPONENTS
Cabinet
The cabinet is constructed of 18 gauge steel, painted
with a tough powder-coated, scratch-resistant finish.
Holes are provided to facilitate mounting to the ductwork.
Access to the collecting cells and prefilters is through a
hinged door.
The access door is interlocked to cut power to the unit
when opened.
Prefilters
The washable prefilters, measuring 11½ x 20 inches
(29.21 x 50.8 cm) are constructed of multi-layers of
aluminum mesh for maximum filtration of large particles.
Collecting Cells
The dual voltage collecting cells are constructed of
heavy gauge aluminum to resist rust and damage. The
first stage, the ionizing section, is charged at
approximately 7000 VDC. The collecting plates are
alternately grounded and charged at 4600 VDC. The
arrow on the cells indicates the direction of air flow which
must point toward the rear of the unit.
Electrical Compartment
The electrical compartment contains the system
switch, safety interlock, high voltage power board,
transformer, air proving switch and performance indicator
light.
INSTALLATION
Location
The Air Cleaner should be installed to the return air
duct in the living area of the home or office. It can be
installed either in a wall or ceiling, but not in the floor. This
unit will replace the existing return air grille currently
installed to the main return duct. For the unit to perform
properly, all the return air must pass through the
Electronic Air Cleaner.
In a wall installation, the unit must be installed
with the hinge down.
The return duct or transition should end slightly
behind the finished wall or framing. It should be
approximately 1/4 -1/2 inch (.63 - 1.27 cm) larger than the
Air Cleaner to allow the back of the unit to slip into the
duct when installing.
When the air duct does not fit the Air Cleaner
opening, a gradual transition is recommended to reduce
air turbulence through the Air Cleaner and to increase its
efficiency. There should not be more than 20º of
expansion used for the transition fitting.
Important Installation Notes
When installing this Air Cleaner, it is important that
there is adequate air flow over the Air Proving Switch
(APS) sensor to activate the power supply when the fan is
operating. To ensure the flow of air over the sensor, the
attached ducting and transition to the Air Cleaner must be
sized and positioned correctly.
If rectangular duct is fitted to the back of the unit, it
must be placed so the opening is over the APS sensor or
transitioned deep enough to ensure air flow over the
sensor.
If round duct is used, it must be positioned over the
center of the opening in the back of the Air Cleaner and
should be at least 18” diameter. (See Fig. 2) If the
connecting duct back to the furnace or air handler is
smaller, a reducing collar should be used down the line to
reduce the duct to the required size. If the duct opening at
the rear of the Air Cleaner needs to be off-set because of
installation restrictions, it must be off-set so that the
position of the air opening is closer to the APS sensor.
With a round duct or under sized rectangular duct it is
important that the transition area between the back of the
Air Cleaner and the bottom of the duct opening is
maintained. A transition height of 10” will allow proper flow
across the sensor. (See Fig. 3)
The APS sensor can be adjusted further into the air
stream. This may be required if the APS sensor is not
directly in the air stream and a multi-speed or variable
3
Fig. 2 Fig. 3