Harsco Industrial C1500H Installation & Owner's Manual page 25

3.5.3.3 Flue Connection
The complete vent exhaust with drain system is shown in the figure (above, as vent is drained separately). The boiler
vent adapter (provided) is designed to accept standard nominal vent pipe sizes. This connector incorporates
provisions to drain condensate formed in the vent system using a 3/4" OD drain stub. This vent drain stub can be
either piped to the condensate drain on the boiler or drained separately. The condensate drains shall have a 4" tall
trap to prevent the passage of flue gases through the condensate system if drained separately.
NOTICE! The condensate formed from combustion flue gases is acidic and has the ability to corrode. The
condensate shall be drained in accordance with local code requirements. A condensate neutralizer may be required
by local code.
Reference: NFPA 54/ANSI Z223.1 National Fuel Gas Code
ATTENTION! Le condensat formé à partir des fumées de combustion est acide et a la capacité de se corroder. Le
condensat doit être drainé, conformément aux exigences du code local. Un neutraliseur de condensats peut être
requis par le code local.
Référence: National Fuel Gas Code, ANSI Z223.1/NFPA 54 et (ou) les codes d'installation CAN/CSA B149.1.
Category IV vent system, the boiler vent should not
be connected into any portion of another mechanical
draft system without consulting the vent
manufacturer. The boiler shall not be connected to
any part of a vent system serving a Category I or II
appliance, nor shall a Category I or II appliance be
connected to any part of the vent system serving this
appliance. Improper interconnection of venting
systems may result in leakage of flue gases into
occupied spaces.
The connection from the boiler to the vent should be
as direct as possible and the upward slope of any
horizontal breaching should be at least 1/4 inch per
linear foot.
4" Tall Condensate Trap
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MACH Gas Fired Boiler
When applying a