Bryant 394U - Furnace Cleaning and Maintenance; Furnace Cleaning Procedures; Routine Care and Maintenance

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394U
CLEANING THE FURNACE.
1. Disconnect pilot tubing at the tube union.
2. Disconnect electrical lead from pilot. (In case
of 10075 shut-off controls disconnect pilot thermo-
couple lead from pilot relay or gas line pilotstat.)
3. Remove front plate from draft diverter (4 sheet
metal screws.) | 7
4. Remove burners and pilot as follows.
a. Remove tinnerman clamp from burner holding
stud. |
b. Slide burner off the orifice and remove under
the manifold.
c. Pilot is attached to one burner and is removed
with that burner. It is not necessary to detach pilot
before removing burner. See Figure 3 for photograph
of burner; also pilot attached.
5. Remove metal angle strip holding flue baffles in
place. See Figure 8.
6. Remove flue baffles. See Figure 9.
7. Use a flexible-handled steel cleaning brush to
loosen scale and soot. Remove these scrapings from
bottom of combustion chamber.
8. Re-assemble furnace by reversing the above pro-
cedure. Note: There is a slot in the back of the
heat exchanger for the back tip of the burner to fit
into. When properly placed, the burner will fit into
this slot and will be level.
Figure 8 — Note metal angle strip held by 3 screws
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CARE AND MAINTENANCE...
Care
of
Blowers.
All
motors
on
the
belt
die
Blows
ers
are
provided
with
oil
cups
and
should
be
oiled
at
least
twice
a
year
with
a
good
grade
of
SAE
30
oil.
The
motors
on
the
direct
drive
blowers
are
sealed
units
and
do
not
require
the
addition
of
oil.
Blower bearings are semi-permanently lubricated.
This lubrication is normally good for 3 to 5 years.
When necessary to add lubricant, use Plastic E,
obtainable from Bryant’s Service Parts Department.
Filters. Filters should be examined frequently for
Clogging due to dirt. The disposable filters should
be replaced when they become dirty. Permanent type
of
filters
may
be
cleaned
using
clear
water.
Be
sure
to coat the filter with water soluble oil after clean-
ing.
.
Cleaning.
The
heat
exchanger
should
be
examined
periodically to see if there has been an accumula-
tion of rust, soot, etc. Clean as required.
Figure 9 — Remove baffles
Ja aed