Burnham K2WTC - Air for Ventilation

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107774-01 - 9/17
VI . Air for Ventilation
WARNING
Outdoor combustion air must be piped to the air intake. Never pipe combustion air from areas containing
contaminates such as swimming pools and laundry room exhaust vents. Contaminated combustion air will
damage the boiler and may cause property damage, personal injury or loss of life.
Air for combustion must always be obtained directly from outdoors (see Section VII for intake piping). Although combus-
tion air must always be obtained directly from outdoors, ventilation openings may still be required to prevent overheating of
boiler components if the boiler is installed in a small space, such as a closet.
• If the recommended service clearances shown in Figure 4.1 can be maintained (with all doors to the room
closed), no ventilation openings are required for this boiler.
• If the above service clearances cannot be maintained, provide two openings into the room, one near
  theoorandoneneartheceiling.Thetopedgeoftheupperopeningmustbewithin12”oftheceiling 
  andthebottomedgeoftheloweropeningwithin12”oftheoor.Eachoftheseopeningsmusthavea 
free area of at least 100 square inches. The “free area” takes into account the blocking effect of mesh
  grillesandlouvers.Wherescreensareusedtheymustbenonerthan¼”(4x4)mesh.
• If this boiler is installed in a room with other appliances, provide adequate air for combustion and/or
ventilation in accordance with the other appliance manufacturer’s installation manual or applicable code.
In cases where such provisions require two openings in excess of 100 square inches, no additional
opening area is required for this boiler.