Noritz GQ-C2857WS-FF US Installation Manual page 17

Vent Pipe Installation
Alternate Horitzontal Vent Termination- PVC/CPVC Materials Only
* When 3' (0.9m) distance between Intake and Exhaust cannot be ensured.
* Can not use Hood termination (PVT-HL).
* Insert the bird screen. 90° elbow vertical setting (downward).
* Ensure at least 3ft (0.9m) or more distance between the near edge of the air intake pipe or exhaust pipe to the
inside corner of a wall.
* Intake and exhaust should face the same direction. Intake and exhaust should keep the same pressure zone.
5.9"
Exhaust
Exterior View
Interior View
Exhaust
Intake
Interior View Exterior View
Exhaust
Interior View Exterior View
WARNING
•
If the distance between the air inlet and exhaust vent terminations is too short, the water heater
will draw in the exhaust gases through the intake. There is a risk of inadequate combustion air
for the water heater, increasing Carbon Monoxide (CO) emissions and noise due to vibration.
• Termination elbows must be oriented vertically, pointing directly downward. Attempts to prevent
exhaust air from entering the air inlet by angling termination elbows in directions other than
directly downward will increase the risk of freezing.
• Reversing the air intake and exhaust pipes is not allowed.
Carbon Monoxide (CO) emissions and noise due to vibration will increase.
Intake
2ft. Min
3" Min
1ft. Min
5.9"
3" Min
Exhaust
Intake
5.9"
3" Min
•
Ensure at least 2ft (0.6m) or more distance between
intake pipe and exhaust pipe.
The distance is measured at inside of pipe to inner
dimension.
Exhaust
•
Upper side is exhaust, lower side is intake.
The reverse connection is not allowed.
•
1ft. Min
Ensure at least 1ft (0.3m) or more distance between
intake pipe and exhaust pipe.
Intake
The distance is measured at the outlets of
intake port (terminal) and exhaust port (terminal).
•
The side distant from wall is intake, the side near the
wall is exhaust.
Intake
The reverse connection is not allowed.
•
Ensure at least 1ft (0.3m) or more distance between
intake pipe and exhaust pipe.
1ft. Min
The distance is measured at inside of pipe to inner
dimension.
17