United States Stove Company 2020N - Manual (Page 9)

AIR FOR COMBUSTION AND VENTILATION
CONTINUED
B. Vent room directly to the outdoors. See Ventilation Air from Outdoors , page 10.
C. Install a lower BTU/Hr firebox, if lower BTU/Hr size makes room unconfined.
If the actual BTU/Hr used is less than the maximum BTU/Hr the space can support, the space
is an unconfined space. You will need no additional fresh air ventilation.
W W W W WARNING ARNING ARNING ARNING ARNING
If the area in which the heater may be operated is smaller than that defined as an If the area in which the heater may be operated is smaller than that defined as an If the area in which the heater may be operated is smaller than that defined as an If the area in which the heater may be operated is smaller than that defined as an If the area in which the heater may be operated is smaller than that defined as an
unconfined space or if the building is of unusually tight construction, provide ad-
unconfined space or if the building is of unusually tight construction, provide ad- unconfined space or if the building is of unusually tight construction, provide ad- unconfined space or if the building is of unusually tight construction, provide ad- unconfined space or if the building is of unusually tight construction, provide ad-
equate combustion and ventilation air by one of the methods described in the Na-
equate combustion and ventilation air by one of the methods described in the Na- equate combustion and ventilation air by one of the methods described in the Na- equate combustion and ventilation air by one of the methods described in the Na- equate combustion and ventilation air by one of the methods described in the Na-
tional Fuel Gas Code
tional Fuel Gas Code tional Fuel Gas Code tional Fuel Gas Code tional Fuel Gas Code,,,,, ANSI Z223.1, ANSI Z223.1, ANSI Z223.1, ANSI Z223.1, ANSI Z223.1, Section 5.3 or applicab Section 5.3 or applicab Section 5.3 or applicab Section 5.3 or applicab Section 5.3 or applicable local codes. le local codes. le local codes. le local codes. le local codes.
VENTILA VENTILA VENTILA VENTILA VENTILATION AIR TION AIR TION AIR TION AIR TION AIR
V V V V Ventilation Air Fr entilation Air Fr entilation Air Fr entilation Air Fr entilation Air From Inside Building om Inside Building om Inside Building om Inside Building om Inside Building
This fresh air would come from an adjoining unconfined space. When ventilating to an ad-
joining unconfined space, you must provide two permanent openings: one within 12" of the
ceiling and one within 12" of the floor into adjoining room (
see options in Figure 1) .
Follow the National Fuel Gas Code NFPA 54/ ANSI Z223.1, Section 5.3, Air for Combustion
and Ventilation for required size of ventilation grills or ducts.
W W W W WARNING ARNING ARNING ARNING ARNING
Rework worksheet, adding the space of the adjoining unconfined space. The Rework worksheet, adding the space of the adjoining unconfined space. The Rework worksheet, adding the space of the adjoining unconfined space. The Rework worksheet, adding the space of the adjoining unconfined space. The Rework worksheet, adding the space of the adjoining unconfined space. The
combined spaces must have enough fresh air to supply all appliances in both
combined spaces must have enough fresh air to supply all appliances in both combined spaces must have enough fresh air to supply all appliances in both combined spaces must have enough fresh air to supply all appliances in both combined spaces must have enough fresh air to supply all appliances in both
spaces.
spaces. spaces. spaces. spaces.
Figure 1 - Figure 1 - Figure 1 - Figure 1 - Figure 1 - V V V V Ventilation Air fr entilation Air fr entilation Air fr entilation Air fr entilation Air from Inside Building om Inside Building om Inside Building om Inside Building om Inside Building
VENTILATION GRILLS INTO
ADJOINING ROOM.
OPTION 2
OPTION 2 OPTION 2 OPTION 2 OPTION 2
VENTILATION GRILLS
INTO ADJOINING
ROOM.
OPTION 1
OPTION 1 OPTION 1 OPTION 1 OPTION 1
OR REMOVE DOOR INTO
ADJOINING ROOM.
OPTION 3
OPTION 3 OPTION 3 OPTION 3 OPTION 3
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