Bosch BGH96M080C4B - Codes and Standards; Safety

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Installation Instructions
Bosch 96% AFUE Condensing Gas Furnace - BTC 770503101 J (06.2023)
Figure 3
Clearance arrows do not change with furnace orientation
1’’
TOP/PLENUM
0’’ BACK
0’’ SIDE
SIDE
MOTTOB
0’’
0’’
3’’
FRONT
Ø
SIDES* FRONTBACK
TOP
(PLENUM)
0"3" 0"1"
Minimum clearance from combustible construction
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When the unit is installed in the horizontal orientation, there must be 7"
clearance in order to install the externally mounted drain trap.


If installed in an alcove or closet
⌀ 24 inches is required for service and maintenance.
Horizontal installation in attic or crawl space
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Indicates supply or return sides when furnace is in the horizontal position. Line
contact only permissible between lines formed by intersections of the side and
back of the furnace cabinet and building joists, studs or frame.
Horizontal applications require a solid, supportive structure for installation
(refer to Section 7.2 “Horizontal Installation”).
For upflow and horizontal applications, the furnace must be pitched a minimum of
1/2" (12.7 mm) to a maximum of 3/4" (19 mm) forward for proper drainage.
See Section 7, "Installation" of this manual for more information.
Figure 4
1/2”~3/4”
1/2”~3/4”
4 Codes and Standards
Follow all national and local codes and standards in addition to these instructions.
The installation must comply with regulations of the serving gas supplier, local
building, heating, plumbing, and other codes. In absence of local codes, the
installation must comply with the national codes listed below and all authorities
having jurisdiction. Follow all codes and standards for the following:
4.1 Safety
f US: National Fuel Gas Code (NFGC) NFPA 54-Latest/ANSI Z223.1-
latest edition and the Installation Standards, Warm Air Heating and Air
Conditioning Systems ANSI/NFPA 90B
f CANADA: National Standard of Canada Natural Gas and Propane
Installation Codes (CAN/CSA-B149.1-05)
Figure 5
Max 85°F/29°C
Min 60°F/16°C
OUTLET
AIR
FRONT
Return Air Temperature
4.2 General Installation
f US: Current edition of the NFGC and the NFPA 90B. For copies,
contact the National Fire Protection Association Inc., 1 Batterymarch
Park, Quincy, MA 02169; (www.NFPA.org) or for only the NFGC,
contact the American Gas Association, 400 North Capital Street, NW,
Suite 450, Washington, DC 20001 (www.AGA.org)
f CANADA: NSCNGPIC.For a copy,contact Standard Sales, CSA
International,178 Rexdale Boulevard, Etobicoke (Toronto),
Ontario,M9W 1R3 Canada