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VI . Air for Ventilation
Air for combustion must always be obtained directly from outdoors (see Section VII for intake piping). Although
combustion 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 floor 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 floor. 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 finer 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.
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.
WARNING
Summary of Contents for K2WTC-135
Page 81: ...81 107774 02 4 18 X Domestic Hot Water Piping continued Figure 10 1 Domestic Hot Water Piping...
Page 89: ...89 107774 02 4 18 XI Wiring continued...
Page 90: ...90 107774 02 4 18 Figure 11 8 Internal Wiring Connections Diagram XI Wiring continued...
Page 101: ...101 107774 02 4 18 Lighting and Operating Instructions XII Start Up and Checkout continued...
Page 142: ...142 107774 02 4 18 XVI Repair Parts continued...
Page 145: ...145 107774 02 4 18 XVI Repair Parts continued...
Page 148: ...148 107774 02 4 18 XVI Repair Parts continued...
Page 150: ...150 107774 02 4 18 XVI Repair Parts continued...
Page 152: ...152 107774 02 4 18 XVI Repair Parts continued 120 121 122 123 124 125 126 127...
Page 159: ...159 107774 02 4 18 SERVICE RECORD DATE SERVICE PERFORMED...
