Maintenance; Making Electrical Connections; Start-Up And Adjustment - Bryant 907 Series Installation Instructions Manual

on the size of the furnace, it may or may not be
necessary to reduce the ductwork on the leaving air
side of the air cleaner. Whatever the application, a 3
to 1 duct reduction ratio should be maintained (3
inches of duct length for every 1 inch reduction
in size).
NOTE: Do not baffle off any portion of the entering
air side of the cleaner.
When changes in duct size would be too abrupt, an
alternate horizontal position may be used, as
illustrated in Figure 5.
For best results, use multiple return air grills located
at or near floor level. Higher cleaning efficiencies and
lower blower operating costs are obtained by limiting
the filter face velocity to 350 ft/min.
III. MAKING ELECTRICAL CONNECTIONS
1. With power door removed, remove junction box
cover located above female plug on casing center
channel.
2. Air cleaner casing has a top line-voltage entrance
hole. Use hole (install strain relief) to run two-wire
with ground electric cable into position for making
connections at female plug.
3. Connect power leads to black and white pigtails
extending from female plug, using wire nuts provided.
4. Connect ground to green pigtail extending from
female plug box, using wire nut provided. Replace
junction box cover.
5. Slide prefilter, ionizer, and collector sections into
casing.
6. Replace power door by first inserting bottom tab
into place on bottom edge of door opening. Push top
of door and guide lock knob screw (Figure 10) into
threads. Turn knob clockwise until screw engages
threads in casing. Continue turning knob clockwise
until door is securely locked.
7. Use proper wiring diagram for single-or multiple-
speed blowers. If cleaner is wired to a multi-speed
direct drive motor, it must be isolated by a relay.
3. Check to see if amber indicator light is glowing.
This indicates proper unit operation.
4. Adjust airflow to no more than 350 ft/min. This
can be done with velometer or as described in filter
flag instruction (optional).
V. MAINTENANCE
Because normal maintenance (cleaning) is so simple,
most homeowners will choose to personally perform
the necessary operations.
Clean the unit where dust from the media pads will
not soil carpets or the floor.
To gain access to the prefilter, ionizer and collector
filter stages, simply push power switch to OFF
position and remove the power door as outlined
previously. Lay it off to one side. Pull out the first-
stage prefilter and vacuum from entering air side, or
wash in detergent and water. Let dry thoroughly. Re¬
install. Do not spray prefilter with any filter coatings.
Collector pads should be replaced every 3 months or
whenever indicated by the optional filter flag or
monitor panel. This time interval, of course, will vary
with service conditions.
IV. START-UP AND ADJUSTMENT
A70120
1. Move switch on power door to ON.
Figure 10 Power Door Internal Detail
2. Set thermostat to start blower.
ON-OFF
ENCAPSULATED
POWER PACK
LOCK KNOB SCREW
COVER INDICsoCKETGHT
TO PRIMARY WINDING
INDICATOR
LIGHT WIRES
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