CleaverBrooks CFC-500 Operation, Service And Parts Manual page 51

Clearfire condensing boiler
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Venting Connections - General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Appliance Categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Vent Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Vent Terminal Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Horizontal Thru-Wall Stack Vent Termination . . . . . . . . . . . . . . . . . 3-6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Horizontal Thru-Wall Stack Vent Termination . . . . . . . . . . . . . . . . . 3-7
Vertical Venting / Inside Combustion Air . . . . . . . . . . . . . . . . . . . . . . . 3-8
Vertical Venting / Direct Vent Combustion Air . . . . . . . . . . . . . . . . . . . 3-9
Stack Sizing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Stack design using room air for combustion . . . . . . . . . . . . . . . . . . . . 3-10
Stack design using direct vent combustion. . . . . . . . . . . . . . . . . . . . . 3-11
Venting for multiple units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Combustion Air / Boiler Room Ventilation Requirements . . . . . . . . . . . 3-14
Air Supply - Unconfined Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Air Supply - Engineered Method . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Section 3
Milwaukee, Wisconsin
www.cleaver-brooks.com

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