Absolute Boilers 750-900-1050
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Absolute Boilers 750-900-1050
Application Note:
In all applications the venting must be between the minimum and maximum equivalent vent lengths shown in. For
values not shown in the chart, consult your local sales representative
4.4.6 Co-venting – Retrofitting:
DANGER
At the time of removal of any existing boiler is removed from a common vent system, the following steps shall be
performed with each remaining appliance connected to the common vent in operation and not in operation. Seal any
unused opening in the common vent system. This boiler must not be co-vented with a category I or III appliance.
Any improper interconnection of venting systems may result in leakage of flue gases into the occupied
space.
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Any unused opening of the vent system must be properly sealed.
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Visually inspect the venting system for proper size and horizontal pitch, determine there is no blockage, restriction,
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Leakage, corrosion and other deficiencies could cause an unsafe condition.
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Close all building doors, windows and all doors between the appliances which remain connected to the common
venting system are located and other space of the building. Turn on clothes dryers, exhaust fan at maximum speed
and any appliance not connected to the common vent system, close fireplace dampers. Do not operate a summer
exhaust fan.
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Place in operation each of the appliances installed in the common vent system being inspected. Follow the lighting
