Navien NPE-180A2 Installation Manual page 53

CAUTION
This water heater has a built-in control to
●
limit the exhaust temperature to 149°F. As
a result, the Navien water heater can be
vented with Schedule 40 PVC.
In high temperature applications, the
●
exhaust temperature can exceed 149°F
(65°C). In that case, you must use Schedule
40/80 CPVC or Approved Polypropylene/
Stainless Steel in the USA or Type BH
Special Gas Vent Class IIB (CPVC) or Class
IIC (Polypropylene/SS) that conforms to
ULC-S636 in Canada.
When using 2 in. vent, if the exhaust
●
temperature exceeds 149°F (65°C), CPVC
pipe (field supplied) must be used for the
first 3 feet of equivalent pipe length. For
systems using 3 in. vent, the first 5 in. of
length must be CPVC pipe.
The following polypropylene vent components are
approved for use with this appliance:
Duravent PolyPro® SW (Rigid) (Certified to
●
ULCS636)
2PPS-xxx (2") or 3PPS-xxx (3")
Duravent PolyPro® (Flexible) (Certified to
●
ULCS636)
3PPS -FLEXxx (3")
2PPS-FAM or 3PPS-FAM (2" or 3" Rigid-to-Flex
Male Adapter)
2PPS-X3L (2" to 3" Increaser)
Centrotherm Innoflue® SW (Rigid) (Certified to
●
UL1738 and ULCS636)
ISxx02xx (2") or ISxx03xx (3")
Centrotherm Innoflue® (Flexible) (Certified to
●
UL1738 and ULCS636)
IFVL02xxx (2") or IFVL03x xx (3")
IFSFC02 or IFSFC03 (2" or 3" Rigid-to- Flex Male
Adapter)
ISEI0203 or ISIA0203 (2" to 3" Increaser)
Hart & Cooley Polyflue™ SW (Rigid) (Certified to
●
ULCS636)
2PF-xx (2") or 3PF-xx (3")
Z-Flex® Z-DENS SW (Rigid) (Certified to UL1738
●
and ULCS636)
2ZDxx (2") or 3ZDxx (3")
52 Installing the Water Heater
The following stainless steel vent components are
approved for use with this appliance:
Duravent FasNSeal® (Rigid) (Certified to UL1738
●
and ULCS636)
FSA-PVC3 (3" PVC to FasNSeal Appliance Adapter)
FSxxxxx03 (3")
Duravent FasNSeal® (Flexible) (Certified to
●
UL1738 and ULCS636)
FSASMM-PP-2 (2" PP-to-FasNSeal adapter)
FSFLEX-02 (2")
Heat Fab Saf-T Vent® EZ Seal
●
9301PVC (3" PVC/CPVC Outlet Boiler Adapter)
93xx (3")
Z-Flex® Z Vent
●
2SVSTTA023 (2" x 3" Appliance Adapter)
2SVEPSCF030X (Straight Pipe)
2SVEEWCF0390 (90° Elbow)
2SVEEWCF0345 (45° Elbow)
Only the vent pipe models listed
Note
●
above are approved for use with this
appliance.
Do not mix pipe, fittings, or
●
joint methods from different
manufacturers.
Proper appliance adapters must be
●
used when using polypropylene or SS
vent pipe.
Refer to the vent manufacturer's
●
instructions for detailed installation
procedures and guidelines.