State Industries Commercial Gas Water Heater Locating the New Water Heater cont’d

Facts to Consider About the Location (cont’d)

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.

WARNING

WARNING

Vent termination must not be within 4 feet of any items such as gas meters, gas valves or other gas regulating equipment.

WARNING

Failure to have required clearances between water heater and combustible material will result in a fire hazard.

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.

Combustion Air and Exhaust

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.

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.

Figure 2

12″ min.

12″ min.

12″ min.

PD VENT

TERMINAL

12″ min.

Figure 3

9″ min. from any overhang

C

Lof Flue

12″ min.

CORNER INSTALLATION

OF INLET AND OUTLET

NOT RECOMMENDED