Use and Care Manual

22
▪ B. APPROVED VENT MATERIALS
▪ C. ALLOWED COMBINED VENT LENGTHS
WARNING
Vent adaptors are not designed as load-bearing devices, and must not be used to support exhaust vent piping. All vent pipes must be properly
connected, supported, and the exhaust must be pitched a minimum of ¼" per foot back to the appliance to allow drainage of condensate. Failure
to properly support vent piping and follow the information in this statement could result in product damage, severe personal injury, or death.
• The Exhaust and intake venting installed with this Combi Boiler must be approved materials listed above. DO NOT REMOVE the factory
installed vent collars. Doing so WILL VOID warranty.
• PVC/CPVC pipe and ttings of the same diameter are considered interchangeable.
• Use of cellular core pipe PVC (ASTM F891), cellular core CPVC, or Radel® (polyphenysulfone) in nonmetallic venting systems is prohibited.
• DO NOT connect PVC/CPVC to Polypropylene without an approved vent connector.
• Any transition to Polypropylene MUST be done in the vertical within ve (5) feet of the appliance.
• When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the water heater vent connection, and at the termination when using
a RHEEM PVC termination kit. DO NOT mix AL29-4C piping from different manufacturers unless using adapters specically designed for the
purpose by the manufacturer.
• Covering non-metallic vent pipe and ttings with thermal insulation is prohibited.
• DO NOT obstruct the ow of combustion or ventilation air.
• When using Pipe Cement/Primer, follow the instructions included with the Cement/Primer closely. Clean and dry all applicable surfaces before
applying.
Failure to follow these directions will result in substantial property damage, severe personal injury, or death.
DANGER
NOTICE
Consult Table 10 or the most recent edition of ANSI Z223.1/NFPA 54 or CAN/CSA B149.1 as well as all applicable local codes and regulations
when selecting vent pipe materials.
APPROVED EXHAUST VENT AND INTAKE PIPE MATERIAL
Item Material
Standards for Installation in:
United States Canada
Exhaust vent
or Intake pipe
and ttings
CPVC schedule 40 ASTM-D2846
PP, CPVC, and PVC venting must be ULC-S636 Certied.
IPEX is an approved manufacturer in Canada, supplying vent
material listed to ULC-S636.
PVC schedule 40 ANSI/ASTM D1785
Polypropylene ULC-S636, UL-1738
Stainless Steel
AL29-4C
Certied for Category IV and direct vent
appliance venting
Certied for Category IV and direct vent appliance venting
Pipe Cement
PVC ANSI/ASTM D2564
IPEX System 636 Cements & PrimersCPVC ANSI/ASTM F493
Pipe Primer PVC / CPVC ASTM F656
2" VENT 3" VENT
EXHAUST
(EQUIVALENT LENGHTH)
INTAKE
(EQUIVALENT LENGHTH)
EXHAUST
(EQUIVALENT LENGHTH)
INTAKE
(EQUIVALENT LENGHTH)
MINIMUM MAXIMUM MINIMUM MAXIMUM MINIMUM MAXIMUM MINIMUM MAXIMUM
14' (4.2M) 50' (15M) 14' (4.2M) 50' (15M) 14' (4.2M) 100' (30M) 14' (4.2M) 100' (30M)
Table 10 – Approved Venting Materials
Table 11 – Approved Vent Lengths
CAUTION
High heat sources (sources generating heat 100°F / 37°C or greater, such as stove pipes, space heaters, etc.) may damage plastic components
of the appliance as well as plastic vent pipe materials. Such damages ARE NOT covered by warranty. It is recommended to keep a minimum
clearance of 8" from high heat sources. Observe heat source manufacturer instructions, as well as local, state, provincial, and national codes,
laws, regulations and ordinances when installing this appliance and related components near high heat sources.
Total equivalent vent length should not exceed fty (50) feet (15M) in 2" pipe, or one hundred (100) feet (30M) in 3" pipe for the exhaust venting.
Total equivalent vent length should not exceed fty (50) feet (15M) in 2" pipe, or one hundred (100) feet (30M) in 3" pipe for the intake piping.