Bryant 312A Installation, Start-Up, Operating And Service And Maintenance Instructions page 34

Fig. 50 - - Rounded End of Knockout
Fig. 51 - - Knockout Pulled Loose
Fig. 52 - - Hammer and Screwdriver Used for Knockout
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Fig. 53 - - Remove Knockout with Hammer
!
BURN HAZARD
Failure to follow this caution may cause personal injury.
Hot vent pipe is within reach of small children when
installed in downflow position.
See the following instruction.
An accessory Vent Guard Kit, KGAVG0101DFG is REQUIRED
for downflow applications for use where the vent exits through
the lower portion of the furnace casing door. Refer to the Vent
Guard Kit Instructions for complete details.
The horizontal portion of the venting system shall slope upwards
not less than 1/4- -in. per linear ft (21 mm/m) from the furnace to
the vent and shall be rigidly supported every 5 ft or less with
metal hangers or straps to ensure there is no movement after
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installation.
SIDEWALL VENTING
This furnace is not approved for direct sidewall horizontal
venting.
In the U.S.: Per section 10.3.4 of the NFGC, any listed
mechanical venter may be used, when approved by the authority
having jurisdiction.
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CAUTION
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