17
6 Venting the Water Heater
CARBON MONOXIDE POISONING
Follow all vent system requirements in
accordance with relevant local or state
regulation, or, in the absence of local or state
code, if in the U.S., refer to the National Fuel
Gas Code ANSI Z223.1 / NFPA 54 - latest edition,
and if in Canada, in accordance with the Natural
Gas and Propane Installation Code CSA B149.1
- latest edition.
WARNING
6.2 General Requirements
• This is a Category IV appliance.
Only vent materials approved for use with
Category IV appliances shall be used.
• Under normal conditions, this Water Heater
will not produce an exhaust flue temperature in
excess of 149°F (65°C).
6.2.1 Vent Piping Material
For PVC / CPVC / PP / Stainless Steel material
• Schedule 40 PVC pipe may be used as the vent
material. If required by local code, use schedule
6.1 Venting Installation Sequence
4. Install termination assembly as described in
this manual or in the vent manufacturer’s
installation instructions.
If necessary, install Bird Screen (not supplied
with Water Heater).
5. Install combustion air and exhaust vent piping
from Water Heater to termination.
6. Slope the horizontal vent 1/4 in. upwards for
every 12 in. (305 mm) toward the termination.
7. Install supports and hanger straps allowing
for movement from expansion, or as per vent
pipe manufacturer’s instructions or local code
requirements.
[Exhaust Vent / Air Intake]
Material
United States Canada
Exhaust Air Intake Exhaust Air Intake
Schedule 40
PVC
ANSI/ASTM D1785
ULC S636
Certified
Materials
Only
CSA
B137.3
PVC-DWV ANSI/ASTM D2665
CSA
B181.2
Schedule 40
CPVC
ANSI/ASTM F441
CSA
B137.3
Polypropylene
(PP)*
Centrotherm - lnnoFlue®
(certified ULC S636),
DuraVent PolyPro® (certified ULC S636)
System 1738
TM
PVC Fuel Gas
Venting
IPEX Management Inc.
(certified UL 1738)
Stainless
Steel*
DuraVent - FasNSeal®
(certified UL1738 and ULC S636)
* Only listed manufacture specified vent parts
may be used for this Water Heater.
Refer to the manufacture’s literature for
detailed information.
- Approved Vent Manufacture:
- Centrotherm - lnnoFlue® PP
- DuraVent PolyPro® / FasNSeal®
** Only listed above terminations are
applicable for Water Heater.
*** These terminations are concentric
vent termination of polypropylene.
The PVC to PP adapters are including
Parts #
Single Wall Pipe
(2 in. / 3 in.)
ISVL02xx(UV)/03xx(UV),
ISEP02xx/03xx, ISIA0203
Elbow
ISELL0287(UV)/0387(UV),
ISELS0245/0345
Termination**
ISELL0287UV/0387UV,
ISTT0220/0320,
ICWT242/352***, ICTCR24,
ICCT3503, ICTC0335***
Bird Screen IASPP02/03
Parts #
Single Wall
Pipe
(2 in. / 3 in.)
2PPS-xxBL/3PPS-xxBL,
2PPS-xxL/3PPS-xxL,
FSVLxx03, FSAVL3(-2)
Elbow
2PPS-E90(B)L/3PPS-E90(B)L,
2PPS-E45(B)L/3PPS-E45(B)L,
FSELB9003/8803/4503/1503
Termination**
2PPS-E90(B)L/3PPS-E90(B)L,
2PPS-T(B)L/3PPS-T(B)L,
2PPS-HKC/3PPS-HKC***,
FSTT3, FSTB3, FSRC3
Bird Screen 2PPS-BG/3PPS-BG, FSBS3
FasNSeal
Adapter
FSA-2PVCS-3FNSF
The venting system shall be installed in
accordance with the water heater manufacturer’s
instructions and, if applicable, the venting system
manufacturer’s instructions.
1. Install the Water Heater.
2. Determine the termination method—horizontal
or vertical, etc.
3. Determine proper location for wall or roof
penetration for each termination.
NOTE
Do not exceed maximum allowed vent
lengths as described in this manual.
40/80 CPVC, PP or Stainless Steel.
• This Water Heater must be vented with plastic
pipe or stainless steel pipe materials as specified
in the table below.
Vent installations in Canada which utilize plastic
or stainless vent systems must comply with ULC
S636.
Venting the Water Heater
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