Bryant 907 Series Installation Instructions Manual

Installation Instructions
ELECTRONIC AIR CLEANER
907
Sizes 12, 16, 24
Series B
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INTRODUCTION
The Bryant Model 907 Series A Electronic Air
Cleaner is available in three sizes: 12-907 (1200
Cancels: 39907D6
I
39907D7
8/15/72
CFM), 16-907 (1600 CFM), and 24-907 (2400 CFM).
They are designed for use with residential and light
commercial forced-air heating and/or cooling systems
and can be installed in a vertical or horizontal sec¬
tion of a typical return air duct system.
The electronic components of the unit convert the 120
VAC of the power supply to 7200 VDC which imparts
an electrical charge to airborne particles such as
smoke, bacteria, pollen, and dust. These charged par¬
ticles are then attracted by the dust-collecting media,
thus purifying the airstream.
The electronic air cleaner consists of:
1. A cabinet containing the air cleaning assembly.
2. A power door assembly.
See Figure 2.
CABINET. A casing encloses three sections that
make up the air cleaning assembly. These sections
are:
1. Mechanical prefilter. An expanded metal first-
stage filter that removes lint and larger dust
particles.
2. Ionizer section. Consists of tungsten wires (that
receive a positive charge) mounted between grounded
steel channels and supported by polyester, glass-
reinforced insulators.
3. Collector section. Consists of two grounded wire
grills and one center plate (that receives a positive
charge) with two fiber glass dirt collecting "media"
pads, one on either side of the center plate. See
Figure 11.
POWER DOOR ASSEMBLY. See Figure 10. The
door assembly consists of:
1. A power indicator light, ON-OFF switch, and lock
knob installed on the door cover.
2. A door base plate contains an encapsulated power
pack, a surge resistor, and wiring that are mounted
internally. A line voltage disconnect (male plug) and
high-voltage spring bus-bar is mounted on the base
plate externally. Six screws must be removed to ex¬
pose the power pack and wiring.
Power Pack. The supply circuit to the power pack,
which is wired across the system air blower, is con¬
trolled by an ON-OFF power switch. With the power
switch ON (assuming power door locked and air
GROUNDED PLATE
REPLACEABLE COLLECTING PAD
POSITIVELY CHARGED GRID
REPLACEABLE
COLLECTING
GROUNDED PLATE
IONIZER
PREFILTER
DUST-LADEN
RETURN AIR
INDICATOR LIGHT
CASED
POWER PACK
A68175
Figure 2—Air Cleaner Components