Monessen Hearth VFCS30DPV Benutzerhandbuch

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58D6002
ON
OFF
L
2
L
1
W
H
GENERAL INSTALLATION INFORMATION
The following formula can be used to determine the maximum heater rating per the definition of unconfined space:
BTU/Hr = (L
1
 + L
) Ft x (W) Ft x (H) Ft 
0
Consider two connecting rooms with an open area between, with the following dimensions:
L
1
 = 1
1
/
 Ft., L
 = 1 Ft., W = 1 Ft., H = 8 Ft.
BTU/Hr = (1
1
/
 
 + 1) x (1) x (8)
0
If there were a door between the two rooms the calculation would be based only on the room with the heater.
BTU/Hr = (1
1
/
) x (1) x (8)
0
Figure 4 - Example of a Large Room with 1/2 Wall Divider 
Counter 
Cast Iron Stove 
x 1000
x 1000 = 800 BTU/Hr
x 1000 = 960 BTU/Hr
W
ARNING
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 adequate 
combustion and ventilation air by one of the methods described in the National Fuel 
Gas Code, ANSI Z223.1, NFPA54, Section 5.3 or applicable local codes.