Noritz GQ-C2857WS-FF US Installation Manual page 16

3" (75mm )PVC Concentric Termination
3" (75mm) or
4" (100mm)
Intake*
3" (75mm) or
4" (100mm)
Exhaust*
* 4" (100mm) pipe requires the use of a reducing coupling
just prior to the termination.
Plastic Rain Cap**
(PRC-1)
**Not supplied with water
heater, order separately.
3"(75mm) or
4"(100mm)
Intake*
* 4" (100mm) pipe requires the use of a reducing coupling
just prior to the termination.
16
Hanger
Straps
Strap
Slope the
Vent Upward
PVC-3CT
Horizontal
3" pipe
12"(30cm)
PVC-3CT
3"(75mm) or
4"(100mm)
Exhaust*
Vertical
•
The concentric termination may be shortened,
but not lengthened from its original factory
supplied length.
•
3" (75mm) or 4" (100mm) PVC or CPVC pipe
may be used with the concentric termination.
1" (25mm) to
2" (50mm) Maintain the same vent pipe diameter from the
water heater flue to the termination.
• When using 4" (100mm) pipe, it will be necessary to
Insert Bird Screen ***
use 4" (100mm) x 3" (75mm) reducing couplings and
in End of Termination
a short section of 3" (75mm) pipe to connect to the
*** Not supplied with
Exhaust and Intake Flue of Water Heater.
water heater,
order separately. Use maximum 6" (150mm) section of pipe to make
the connection between the reducing 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 on the left.
•
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 7' (2.1m)
above a public walkway, 6' (1.8m) from the combustion
air intake of any appliance, and 3' (0.9m) from any
other building opening, gas utility meter, service
regulator etc.
• Slope the horizontal vent 1/4" upwards for every
12" (300mm).
•
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.