the iccs international code council1370 .pdf
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the iccs international code council
You may live in an area of the country where most of water heaters are placed in the garage. It is
acceptable to have water heaters in the garage but there are some details that you should
understand. The authority on determining what the criteria are for residential water heater
installation and safety is the ICC (International Code Council). The following information is taken
from the 2009 International Residential Code (IRC) section P2801.6 and P2803.6.1 commentary.
Water heaters having an ignition source will be elevated to make sure that the source of ignition is
not lower than 18" above the garage floor. An ignition source may be plenty of things, including
things like an open flame, electrical switch, open resistance heating coils, or even an electrical
igniter unit. Household garages have a higher possibility for volatile liquids, for example gasoline
and paint thinners that may spill or perhaps leak from their containers. Considering the vapors
from these liquids are heavier than air, they concentrate just above floor level, posing an
explosion risk within garages having a water heater. http://www.fire-suppressant-systems.com/
Lots of electric water heater thermostats have enclosed contacts, yet they are just not sealed gas
tight. Therefore, if ever an electric water heater with an ignition source located less than 18" from
the bottom of the unit, it is mandated that the unit be elevated so that the ignition source
(thermostat) is at least 18" above the garage floor. Electric water heaters having every switching
controls located above 18" from the bottom of the water heater are not required to be elevated.
Gas-fired appliances have to comply with the elevation requirement for elevation above the
garage floor, however, have an exception so as to enable gas-fired appliances using flammable
vapor ignition resistant (FVIR) design to be installed without elevating the unit.
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