18
Vertical Vent Termination- PVC/CPVC Materials Only
Firestop
Firestop/Support
Roof
Flashing
Storm
Collar
Hanger
Strap
Horizontal Vent Termination- PVC/CPVC Materials Only
Hanger
Straps
**1' (0.3m) Minimum
**1' (0.3m) Minimum
* Not supplied with water
heater, order separately.
recommended, but not required.
Insert Bird
Screen* in
Each End
of Tee
Support
Insert Bird
Screen* in
End of 90
Elbow
Slope the
Vent Upward
* Not supplied with water
heater, order separately.
**1' (0.3m)
Minimum
**1' (0.3m) minimum
recommended, but not required.
•
•
•
•
•
•
•
•
•
•
•
A tee, the PVT-HL termination may be used for the vent
termination. It is not necessary to use bird screens with the
PVT-HL termination.
Terminate at least 12" (300mm) above grade or above snow line.
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 in structions.
Enclose exterior vent systems below the roof line to limit
condensation and protect against mechanical failure.
When the vent penetrates a floor or ceiling and is not
running in a fire rated shaft, a firestop and support is
required.
When the vent termination is located not less than
8' (2.4m) from a vertical wall or similar obstruction,
terminate above the roof at least 2' (0.6m), but not
more than 6' (1.87m), in accordance with the National
Fuel Gas Code ANSI Z223.1/NFPA 54 or Natural Gas and
Propane Installation Code CSA B149.1.
Provide vertical support every 3' (0.9m) or as required
by the vent pipe manufacturer's instructions.
A short horizontal section is recommended to prevent
debris from falling into the water heater.
When using a horizontal section, slope the horizontal
vent 1/4” upwards for every 12” (300mm) toward the
termination to drain condensate.
Exhaust
Intake
Exhaust
Intake
90 Elbow
SV Conversion Kit
Accessory
(#SV-CK-3)
90 Elbow
SV Conversion Kit
Accessory
(#SV-CK-3)
Inlet screen
Inlet screen
3” Min.
Slope the
Vent Upward
Vent Pipe Installation (When supplying combustion air from the indoors (SV, non-direct vent))
• Disconnect power and turn ON dip switch 3 if combustion air will be supplied from the
indoors as illustrated to the right. Refer to page 34 for the location of the dip switch bank.
• SV Conversion kit #SV-CK-3 is required for the air intake
.
* Dip switch No.3 is turned on.
Failure to perform the above 2 steps could result in a fire or explosion causing
property damage, personal injury or death.
Refer to the instructions provided with the conversion kit for additional details.
WARNING
When installing this water heater in an area with a large amount of lint such as a commercial Laundromat,
direct-vent ("-DV") system must be used. The "-SV" configuration (using an SV conversion kit) is prohibited.
When installing this water heater in a mobile home, all combustion must be drawn directly from the outdoors.
The "-SV" configuration (using
SV conversion kit) is prohibited.
DANGER
