Bosch BGS80, Руководство пользователя

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User's Information Manual Bosch 80% AFUE Gas Furnace | 9
Bosch Thermotechnology Corp.
|
06.2018
Data subject to change
Depending on the installation, diff ering fi lter arrangements can be applied. A
media air fi lter or electronic air cleaner can be used as an alternate fi lter. If a fi lter
replacement is necessary, follow the fi lter sizes given in the Recommended Minimum
Filter size (Table 1) to ensure proper unit performance. Also, be sure the replacement
fi lter is rated for high airfl ow. For further details, call your contractor or distributor.
Upright Filter Removal
To remove fi lters from an external fi lter rack in an upright upfl ow installation, follow
the directions provided with the external fi lter rack kit. Clean, wash and dry a
permanent fi lter. When using a permanent fi lter, both sides should be sprayed with a
dust adhesive as recommended on the adhesive container. Spray adhesives for use
with permanent fi lters can be found at some hardware stores.
Be sure airflow direction arrow points towards the blower.
Inspect fi lter. If the dirty fi lter is the disposable type, replace dirty fi lter with the same
type and size fi lter. If the dirty fi lter is a permanent fi lter, clean as follows:

Clean, wash and dry a permanent filter. When using a permanent filter,
both sides should be sprayed with a dust adhesive as recommended on
the adhesive container.

If badly torn or uncleanable, these filters must be replaced by equal size
permanent, high velocity filters. Throwaway filters must not be used as
replacement for permanent filters.
Furnace cabinet
width
Filter size
Filter type
Side return Bottom return
14-1/2 16X25 14X25 High Velocity (600 FPM)
17-1/2 16X25 16X25 High Velocity (600 FPM)
21 16X25 20X25 High Velocity (600 FPM)
24.5 16X25 24X25 High Velocity (600 FPM)
Table 1
Manufacturer recommended high velocity fi lter sizes - Inch
5.3 Burners
Periodically during the heating season perform a visual check of the burner fl ames.
Turn the furnace on at the thermostat. Wait a few minutes since any dislodged dust
will alter the normal fl ame appearance. Flames should be stable quiet soft and blue
with slightly orange tips. They should not be yellow. They should extend directly
outward from the burner ports without curling downward, fl oating, or lifting off the
ports. Contact a qualifi ed service agent at once if an abnormal fl ame appearance
should develop.
Only a qualifi ed contractor, installer or service agency can clean the
burners if the burners get a heavy accumulation of soot and carbon.
5.4 Replacement Parts
Replacement parts as well as information regarding parts are available through your
contractor or distributor. All service must be performed by a qualifi ed professional
installer. When ordering any of the listed functional parts, be sure to provide the
furnace model and serial numbers with the order, this information is available on the
warning label located on the blower access panel. Common spare parts are listed
below.
Cabinet Parts
—
Panel, Top
—
Panel, Lower Front
Electronics
—
Transformer
—
Main PCB Board
—
Door Switch
—
Pressure Switch
—
Limit Switch(es)
—
Capacitor
Blower Parts
—
Motor
—
Blower Assembly (with wheel)
—
Motor Bracket assembly
Heating Parts
—
Inducer
—
Ignitor
—
NG Orifice / LP Orifice
—
Burner
—
Burner tray
—
Gas Valve
—
Flame Sensor
—
Heat exchanger assembly
—
Gas Manifold assembly
—
Rollout switch - resettable