Exhaust Vent And Intake Pipe; Carbon Monoxide Detectors; Prevent Combustion Air Contamination - Rheem RTGH-RH11DV Use And Care Manual

PRECAUTIONS
If the water heater is located in a residential garage, it should be installed per the latest edition of the National Fuel Gas Code, ANSI Z223.1, and
CGA-B149 Installation Code in Canada.
• Mount the bottom of the water heater a minimum of 18" (457 mm) above the floor of the garage, to ensure the burner and ignition devices
are well off the floor.
• Locate or protect the water heater so it cannot be damaged by a moving vehicle.
The space must be provided with correctly sized combustion/ventilation air openings for all other appliances located in the space with the water
heater. Do not install the water heater in an attic. Failure to comply with these warnings could result in substantial property damage, severe
personal injury, or death.
▪ E. EXHAUST VENT AND INTAKE PIPE
Vents must be properly supported. The water heater exhaust and intake connections are not designed to carry heavy weight. Vent support
brackets must be within 1' (30 cm) of the water heater and the balance at 4' (1.22 m) intervals. Venting must be readily accessible for visual
inspection for the first 3' (91 cm) from the water heater.
NOTE: To prevent combustion air contamination, see Table 9 in this section when considering exhaust vent and intake pipe termination.
Exhaust vent and intake pipe may be vented vertically through the roof or out a side wall. Venting methods are detailed in the Venting Section. Do
not attempt installation using any other means. Be sure to locate the water heater so exhaust vent and intake piping can be routed through the
building and properly terminated. Exhaust vent and intake piping lengths, routing, and termination method must comply with methods and limits
given in the venting section.
▪ F. CARBON MONOXIDE DETECTORS
In the Commonwealth of Massachusetts and As Required by State and Local Codes
Installation of Carbon Monoxide Detectors: At the time of installation or replacement of the vented gas fueled appliance, the installing plumber
or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the floor level where the
gas appliance is installed, unless the appliance is located in a detached, uninhabitable structure separate from the dwelling, building, or structure
used in whole or in part for residential purposes.
In addition, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is
installed on each additional level of the dwelling, building, or structure served by the vented gas appliance. It shall be the responsibility of the
property owner to secure the service of qualified licensed professionals for the installation of hard wired carbon monoxide detectors.
a. In the event that the vented gas fueled appliance is installed in a crawl space or attic, the hard wired carbon monoxide detector with
alarm and battery back-up shall be installed on the next adjacent floor level.
b. In the event that these requirements cannot be met at the time of completion of installation, the owner shall have a period of thirty (30)
days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide
detector with an alarm shall be installed.
Failure to comply with these requirements could result in product damage, severe personal injury, or death.
Approved Carbon Monoxide Detectors: Each carbon monoxide detector as required in accordance with the above provisions shall comply with
NFPA 70 and be ANSI/UL 2034 listed and IAS certified.
▪ G. PREVENT COMBUSTION AIR CONTAMINATION
Install intake piping for the water heater as described in the Venting section. Do not terminate exhaust in locations that can allow contamination of
intake air.
Ensure that the intake air will not contain any of the contaminants below. For example, do not pipe intake near a swimming pool. Avoid areas
subject to exhaust fumes from laundry facilities. These areas always contain contaminants. Contaminated air will damage the water heater,
resulting in possible substantial property damage, severe personal injury, or death.
WARNING
WARNING
WARNING
WARNING
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AP18733 REV. 3.2.17