Absolute ABS-1500 Installation And Operating Manual page 26

Absolute Boilers ABS 1500-2000-2500-3000-4000
WARNING
The boiler should never be operated in a negative building pressure. Caution should be exercised with exhaust fans,
air handling & other devices, that could affect the buildings air pressure or combustion air supply. All venting must
be arranged to avoid and prevent the accumulation of flue gas condensation.
WARNING
An improperly sealed venting system could result in carbon monoxide poisoning; ensure adequate support and fastening
of the system. Ensure venting can safely exhaust all flue gases to the outside in a safe and effective manner. Do not
puncture or drill holes in any portion of the venting, the boiler is equipped with a pressure and emission test port.
WARNING
Warning & Precautions for Co-venting: Only co-vent this boiler with another, category II appliance. Co-venting
with other appliances shall conform and be sized in accordance to local and national codes [CSA B149 & ANSI Z223.1]
according to appropriate tables in Part II of the above mentioned codes.
WARNING
Do not place intake or exhaust terminations above a walkway or sidewalk as the condensation can cause icing of
walking surface. Maintains a minimum of 4 feet horizontal from any gas or electric meter.
WARNING
The boiler vent shall not be connected to any other portion of a mechanical draft system without consulting a vent
manufacturer.
DANGER
Do not use a barometric damper, Harmful flue gases may leak into the room and cause serious injury or death.
DANGER
All boiler venting systems should be sized by a qualified venting professional experienced in venting system design.
The information contained herein should be used as guide only, and is not intended to used in lieu of a qualified
technical expertise in gas appliance venting
WARNING
Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or
restriction, leakage corrosion and other deficiencies which could cause an unsafe condition
WARNING
Keeping boiler area clear and free from combustible materials, gasoline and other flammable vapors and liquids.
Venting lengths must not exceed the minimum and maximum equivalent lengths show in chart below. Any horizontal
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