HTP EL-110, Installation Manual

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33
PART 5 – VENTING, COMBUSTION AIR, AND CONDENSATE
REMOVAL
The boiler must be vented as detailed in this Venting Section. Ensure exhaust and intake piping complies with
these instructions regarding vent system. Inspect finished combustion air intake and exhaust piping thoroughly to
ensure all joints are well secured, airtight, and comply with all applicable code requirements, as well as with the
instructions provided in this manual. Failure to properly install the vent system will result in property damage,
severe personal injury, or death.
A. GENERAL
This boiler is
certified as a “Category IV” appliance, and requires a special venting system. The vent system will
operate with a positive pressure in the pipe. Exhaust gases must be piped directly outdoors using the vent
materials and rules outlined in these instructions. Do not connect vent connectors serving appliances vented by
natural draft into any portion of mechanical draft systems operating under positive pressure. Follow the venting
instructions below carefully. Failure to do so will result in substantial property damage, severe personal injury, or
death.
1. Installation should be made in accordance with the regulations of the Authority Having Jurisdiction, local code
authorities, and utility companies which pertain to this type of water heating equipment.
2. Install the venting system in accordance with these instructions and with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, CAN/CGA B149, and/or applicable provisions of local building codes.
3. This boiler must be vented with materials, components, and systems listed and approved for Category IV
boilers.
Exhaust and intake air pipes are to be piped separately. This boiler cannot share a common exhaust or intake
with multiple appliances. Failure to follow this instruction will result in substantial property damage, severe
personal injury, or death.
NOTE: To avoid contamination often contained in indoor air, it is best to pipe all intake combustion air directly to
the outdoors.
Improper seating of vent pipe gaskets can cause eventual gasket failure and exhaust gas leakage. Ensure the
exhaust vent pipe is properly beveled and seated before insertion into the flue adapter. Failure to do so could
result in property damage, severe personal injury, or death.
Due to the extreme flammability of most glues, cements, solvents, and primers used to join plastic exhaust and
intake air pipes, explosive solvent vapors must be cleared from all vent piping before start-up. Avoid using excess
cement or primer, as this may pool in the vent pipes. Vent assemblies should be allowed to cure for a period of at
least 8 hours before powering a connected appliance. Failure to follow these instructions will result in substantial
property damage, severe personal injury, or death. It is the installers’ responsibility to understand the hazards
associated with explosive solvents and take the necessary precautions to avoid these risks.