Allowed Schedule 40 Combined Vent Lengths (Pvc, Cpvc, Pp); Tightening Water Heater Collar To Exhaust Vent And Intake Pipe - Westinghouse WGRGH**199 Series Installation, Start-Up, Maintenance, Parts, Warranty

Item
Exhaust vent or Intake
pipe and fittings
Pipe cement/primer

This water heater has a built-in control to limit the exhaust temperature to 149

The exhaust and intake components installed with this water heater must be used for near water heater piping BEFORE
transitioning to the approved materials listed above. DO NOT REMOVE these installed components. Doing so WILL VOID
warranty.

PVC/CPVC pipe and fittings 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 PP without an approved vent connector.

When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the water heater vent connection, and at the
termination when using an Westinghouse PVC termination kit. DO NOT mix AL-29-4C piping from different manufacturers
unless using adapters specifically designed for the purpose by the manufacturer.

Covering non-metallic vent pipe and fittings with thermal insulation is prohibited.

DO NOT obstruct the flow 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.
Table 11 – Approved Venting Materials
High heat sources (sources generating heat 100
components of the heater 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 heater and related components near high heat
sources.
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 heater 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.
C. ALLOWED SCHEDULE 40 COMBINED VENT LENGTHS (PVC, CPVC, PP)
MODEL
RGH-199
Table 12 – Approved Combined Vent Lengths
NOTE: When using more than 1 elbow, reduce maximum allowable length:

5 feet (1.5M) for each additional 3" 90

2.5 feet (.75M) for each additional 3" 45

8 feet (2.4M) for each additional 2" 90

4 feet (1.2M) for each additional 2" 45
D. TIGHTENING WATER HEATER COLLAR TO EXHAUST VENT AND INTAKE PIPE
This appliance uses 2" or 3" diameter pipe for exhaust vent and intake pipe. In order to use 2" pipe, it is required to reduce pipe size in
a vertical length of pipe with a 3" x 2" reducing coupling (not included). Follow the steps below to install 3" pipe into the appliance
collar. See Figure 7 for additional details.
1. Clean and dry the appliance connection. DO NOT use primer or cement on the appliance connection.
2. Push the length of pipe into the connection until it touches the bottom of the fitting.
APPROVED EXHAUST VENT AND INTAKE PIPE MATERIAL
Material
CPVC schedule 40
PVC schedule 40
Polypropylene
Stainless Steel AL29-4C
PVC
CPVC
o o
F / 37 C or greater, such as stove pipes, space heaters, etc.) may damage plastic
2" COMBUSTION AIR / VENT PIPE
MAX
50' (15.24M)
o
elbow
o
elbow
o
elbow
o
elbow
Standards for Installation in:
United States
ASTM-D2846
ANSI/ASTM D1785
UL-1738
Certified for Category IV and
direct vent appliance venting
ANSI/ASTM D2564
ANSI/ASTM F493
o
F (65
Canada
PP, CPVC, and PVC venting must be
ULC-S636 Certified. IPEX is an
approved manufacturer in Canada,
supplying vent material listed to ULC-
S636.
Certified for Category IV and direct vent
appliance venting
IPEX System 636 Cements & Primers
o
C)
3" COMBUSTION AIR / VENT PIPE
MAX
100' (30M)
WHL-060 REV. 1.6.16
20