Furnace Located In Confined Space - Yukon Eagle Oil Furnace Owner's Manual

FURNACE LOCATED IN CONFINED SPACE

When the furnace is in utility room, install two open grilles.
(See Fig. 28.) Place them in a wall or door opening to the
rest of the house. One grille will supply combustion air.
Locate it near the floor. The other grille is for ventilation.
Locate it close to the ceiling. Each grille must have a free
area. It should be not less than one square inch for each
1000 BTU/hr. of the total input rating of appliances in
confined space.
FOR EXAMPLE: Your furnace is rated at 150,000 BTU
per hour. The water heater is rated 30,000 BTU per hour.
The total is 180,000 BTU per hour. You need two grilles,
each with 180 square inches of free opening. Metal grilles
have about 60% free (open) area. Therefore, you need
two metal grilles with 300 square inches each of louvered
area. The height should be about half the width.
FRESH AIR DUCT CAPACITIES
Fresh air duct capacities for duct supplying fresh air
BTU Per Hour Input*
SIZE
3-1/4 X 12 INCH
8 INCH ROUND
8 X 12 INCH
8 X 16 INCH
* Based on opening covered by 1/4 inch mesh screen, wood or metal louvers.
Questions? Visit www.yukon-eagle.com or call 1-800-358-0060
Installation
1/4" MESH
SCREEN
BTU
144,000
200,000
382,000
512,000
WOOD METAL
LOUVERS LOUVERS
BTU
36,000 108,000
50,000 150,000
96,000 288,000
128,000 384,000
30
BTU
FIG. 28