State SDV 75 70 NE/PE - Manual (Page 8)

12 ″ min.
FORCED AIR
INLET
12 ″ min.
36 ″ min. IF “A” DIMENSION
IS LESS THAN 120 ″
12 ″ min.
PD VENT
TERMINAL
PD VENT
TERMINAL
12″
min.
GRADE
“A”
CORNER INSTALLATION
OF INLET AND OUTLET
NOT RECOMMENDED
8
Locating the New Water Heater (cont’d)
Figure 2
Combustion Air and Exhaust
Venting Through an Outside Wall – Clearances
•
0 ″ clearance for 3″ PVC, ABS, or CPVC Schedule 40 piping
from combustible surfaces.
•
18
″ minimum in all directions from any obstruction, such as a
wall, that may interfere.
•
12
″ minimum from the ground and corners, 9″ ceiling over-
hangs. Figure 2.
•
The Power Direct Vent outlet terminal shall terminate at least
36 ″ above any forced air inlet located within 10 feet. Figure 3.
•
The Power Direct Vent outlet terminal shall terminate at least
12 ″ below 12″ horizontally from or 12″ above any door, win-
dow or gravity air inlet into the building. Figure 3.
•
18 ″ minimum from other natural draft (gravity) direct vent, power
vent or power direct vent appliance inlet and/or outlet vent(s) when
directly above or 135° to either side of center line. Figure 4, page 9.
•
24 ″ minimum from any appliance inlet and/or outlet vents when
directly below or 45° to either side of center line. Figure 4, page 9.
•
The location selection must provide clearances for servicing and
proper operation of the water heater. Figure 5.
•
Vent termination must not be within 4 feet of any items such as
gas meters, gas valves or other gas regulating equipment.
•
The venting system must be installed in a manner which
allows inspection of the installation of the venting pipes and
joints as well as periodic inspection after installation as
required by the National Fuel Gas Code ANSI Z223.1.
Facts to Consider About the
Location (cont’d)
Figure 3
WARNING
Failure to have required clearances between water heater
and combustible material will result in a fire hazard.
WARNING
Vent termination must not be within 4 feet of any items
such as gas meters, gas valves or other gas regulating
equipment.
WARNING
When determining the installation location for a power
direct vent water heater, snow accumulation and drift-
ing should be considered in areas where applicable.
WARNING
If this water heater will be used in beauty shops, barber shops,
cleaning establishments, or self-service laundries with dry clean-
ing equipment, it is imperative that the water heater or water
heaters be installed so that combustion and ventilation air be
taken from outside these areas. Refer to the “Locating The New
Water Heater” section of this manual and also the latest edition
of the National Fuel Gas Code, ANSI Z223.1, also referred to as
NFPA 54 for specifics provided concerning air required.
WARNING
Do not install in a confined area such a closet, unless you
provide ventilation air as shown in the “Locating The New
Water Heater” section. Never obstruct the flow of ventila-
tion air. If you have any doubts or questions at all, call your
gas company. Failure to provide ventilation air can result in a
fire or explosion and can cause DEATH, SERIOUS BODILY
INJURY, OR PROPERTY DAMAGE.
CLof Flue
9 ″ min. from
any overhang
12 ″ min.
12 ″ min.