7
CHAPTER 1
CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
1.3.4 Polypropylene (PP) Vent Piping and Fittings
Approved polypropylene vent manufacturers and vent
systems:
• Centrotherm Eco Systems, LLC
• DuraVent
• Z-Flex U.S. Inc.
• ECCO Manufacturing
Only use approved polypropylene components listed
in Table 2 on page 4 to Table 5 on page 6. Termi-
nation must be selected from the options shown in this
manual, using UV-resistant polypropylene.
Contact approved polypropylene vent man-
ufacturer for a copy of their installation in-
structions. Read, understand and follow all
of the vent manufacturer’s instructions be-
fore beginning the installation. Contact vent
manufacturer if you require any technical
support. Failure to properly install and sup-
port vent system can cause the venting sys-
tem to fail, resulting in substantial property
damage, serious injury, or death.
• A specific vent adapter may be required to
transition from the boiler vent outlet adapt-
er to the specific polypropylene vent system.
Contact the appropriate PP vent manufac-
turer for transition adapter information.
• When using Polypropylene for the vent sys-
tem, PVC or CPVC pipe meeting the listed
requirements in this manual may be utilized
for the combustion air piping.
WARNING
NOTICE
1.4. Vent/Combustion Air Equivalent
Lengths
• For all venting applications, PVC/CPVC, AL29-4C®,
SS or Polypropylene, the length must not exceed
the lengths listed in Table 8 below.
• For PVC/CPVC or AL29-4C® vent systems, reduce
the maximum allowable length for each elbow as
follows:
• 3 feet for every 45º elbow
• 5 feet for every 90º elbow
• For polypropylene vent systems, reduce the maxi-
mum allowable length for each elbow as follows:
• 5 feet for every 45º elbow
• 10 feet for every 90º elbow
1.5. Vent Restrictions
1.5.1 2 Inch (60 mm) Vent System Restrictions
• The 2 inch vent system requires a 1 inch clearance
to combustibles.
• Use long sweep elbows to limit pressure drop and
to avoid excessive vent temperatures.
• In 2 inch PVC vent applications, the rst 7 equivalent
feet of the vent system must utilize CPVC material.
To avoid vent failure, the installer must use
CPVC vent material for the first 7 equivalent
feet of a 2 inch PVC vent system. The installer
must also utilize primer and glue that is cer-
tified for both PVC/CPVC materials. Failure to
comply with this requirement can cause the
venting system to fail, resulting in substantial
property damage, serious injury, or death.
WARNING
Table 6 - Maximum Allowable Vent or Combustion Air Piping Length
INSTINCT
Model
2 Inch [60 mm] Piping
OR
3 Inch [80 mm] Piping
Feet Elbows Feet Elbows
Solo 110 33 0 100 0
Solo 155 33 0 100 0
Solo 199 N/A N/A 100 0
Combi 155 33 0 100 0
Combi 199 N/A N/A 100 0
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