Absolute Boilers ABS 1500-2000-2500-3000-4000
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4.4.1 Venting options
The standard delivery of the Absolute boiler can be installed with any of the venting options listed above.
See each respective section for details; discard the air intake grill when using sealed combustion vent systems.
4.4.2 Vent Termination Inlet/Outlets
The vent terminals must be installed to provide suitable protection against wind, rain, snow or blockage along with a
rodent/debris screen. Conventional chimney application can use a tapered cone, and for sidewall or direct venting, use
a termination tee fitting.
4.4.3 Combustion Air Supply Requirements
The boiler requires a clean, fresh and adequate supply of combustion air, free of chlorine, halogenated hydrocarbons,
or other chemicals that can be hazardous when used in gas combustion fired equipment. Failure to provide sufficient
combustion air supply will result in carbon monoxide (CO) production that could lead to personnel injury including loss
of life or damage to the boiler and property.
Not obstructing the flow of combustion and ventilation air.
Vent and air intake connection to the Boiler:
Ensure both vent and air intake is properly supported to the building. The boiler is not designed to take any weight
vertically.
Horizontal sections of venting must be properly supported in a manner to prevent any sagging or low spots. For Category
II AND IV ensure the slope is ¼ to ½ inch per inch towards the boiler, to prevent accumulation of condensate, and
ensure there is a adequate drainage for the condensate.
Flue gas vent collar:
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Each Absolute boiler is supplied with a ½ inch NPT port to house a flue gas temperature sensor.
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Each Absolute boiler is supplied with a ¼ NPT test port for a combustion probe. Ensure the test port in sealed after
combustion analysis.
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The flue gas vent collar is designed to accept venting that will fit inside the collar.
CAUTION
Do not install venting over top of the flue gas collar and do not drill into the side of the vent collar
Special attention:
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Quality of combustion air
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Dust, fumes, corrosive elements, hydrocarbons, other unknown containments are harmful and must be avoided.
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Paint, beauty, automotive etc. shops are harmful and detrimental to the boiler.
Summary of Contents for ABS-1500
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