Operating instructions

10 58D6002

The following formula can be used to determine the maximum heater rating per the definition of unconfined
space:
BTU/Hr = (L1 + L2) Ft x (W) Ft x (H) Ft
50
Consider two connecting rooms with an open area between, with the following dimensions:
L1 = 15
1
/2 Ft., L2 = 12 Ft., W = 12 Ft., H = 8 Ft.
BTU/Hr = (15
1
/2 + 12) x (12) x (8)
50
If there were a door between the two rooms the calculation would be based only on the room with the heater.
BTU/Hr = (15
1
/2) x (12) x (8)
50
Figure 4 - Example of a Large Room with 1/2 Wall Divider
Counter
Cast Iron Stove
x 1000
x 1000 = 52800 BTU/Hr
x 1000 = 29760 BTU/Hr
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