Instructions / Assembly

19
Horizontal
Hanger
Straps
Strap
Slope the Vent
Upward
Intake
2" (50mm)
or
3" (75mm)
Exhaust
2" (50mm)
or
3" (75mm)
1" (25mm) to
2" (50mm)
Insert Bird Screen** in End of Termination.
** Not supplied with water heater.
It is included in PVC Concentric Termination.
PVC-2CT
or
PVC-3CT *
* 3" (75mm) pipe and 2"-3" increaser couplings
require when using PVC-3CT.
Increaser couplings must be used just behind
the water heater.
2" pipe
3" pipe
2"×3"Increaser
coupling
e.g.) PVC-2CT installation
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The concentric termination may be shortened, but not lengthened from its original factory supplied length.
2"(50mm) or 3" (75mm) PVC or CPVC pipe may be used with the concentric termination.
Maintain the same vent pipe diameter from the water heater flue to the termination.
Do not exceed the maximum vent lengths as shown on next page 20.
When using 3" (75mm) pipe, it will be necessary to use 2"(50mm)×3" (75mm) increaser couplings and a short section
2" (50mm) pipe to connect the Exhaust and Intake Flue of the Water Heater. Use maximum 6" (150mm) section of
pipe to make the connection between the increaser couplings and the Exhaust and Intake Flue of the Water Heater.
There must be a 1" (25mm) to 2" (50mm) clearance between the outside wall and the air intake section of the
termination as illustrated below.
Install a securing strap to prevent movement of the termination.
Terminate at least 12" (300mm) above grade or above snow line.
For vertical installation, terminate at least 3’ (0.9m) from the combustion air intake of any appliance and any other
building opening.
Slope the horizontal vent 1/4" upwards for every 12" (300mm) toward the termination.
Use a condensation drain if necessary.
In the Commonwealth of Massachusetts a carbon monoxide detector is required for all side wall
horizontally vented gas
fuel equipment. Please refer to Technical Bulletin TB 010606 for full installation instructions
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PVC Concentric Termination- PVC/CPVC Materials Only