The following are the common demands for the garage fuel scorching water heater installation regarding its burner chamber height over the floor surface. Dependent on the model / sort / age of your particular water heater and your jurisdiction, they could or may not apply - always verify ahead of the installation.
If there is no manual explaining the installation needs for your appliance, speak to the manufacturer and ask for set up instructions for your specific model (in most cases you'll be in a position to get it online).
Nevertheless, the rules listed below are really important. If they do apply to your appliance, you may possibly be placing your life in danger by not following them.
As a common necessity, you must not install a water heater in any location the place gasoline, flammable vapors or liquids, and combustible materials are most likely to be existing. This kind of set up may outcome in an explosion or fire, but often there may possibly be no other choices. If this is exactly where you are standing right now, you must stick to the guidelines.
1. How higher ought to the WH be raised off of the garage floor?
The garage (totally free standing or attached) is one particular of individuals not-preferable locations for the water heater installation, but often it is the only one.
Ignition source (pilot, electronic igniter, hot surface igniter, and so forth.) have to be 18" from the garage floor.
The exact same rule applies to the WH that has been installed in a space opening to the garage, this kind of as a utility closet, or utility room. This applies even if the door(s) separating the garage and the appliance space are air tight / self closing.
2. Water heater ignition supply need to be 18" from the floor in an area exactly where flammables are stored.
If you happen to be installing the WH in an location that is also focused to storing flammables or there's a probability of this kind of supplies getting stored there, place the appliance on a platform so the ignition source is at least 18" over the floor surface. Make confident that this platform is capable of supporting the fat of the filled WH.
The way it typically operates in our properties is that although hunting for some storage space we stuff our utility space / closet with every thing that does not match anywhere else. Factors such as leftover paint, paint thinner, all sorts of cleaning chemical compounds, container filled with emergency gasoline, etc are usually found here. Is this how your WH closet seems? Properly, you're not alone.
Aside from accidental spillage, some of individuals plastic containers might simply melt down whilst standing following to the water heater or on prime of it, spilling its contents, and creating vapors to ignite beneath the WH and inside the burner chamber - go and look close to your appliance's base. Don't push it to the side! Take it out of there!
Bad news: most of the WH produced prior to 2003 had an open combustion chamber and they had been not equipped with a safety gadget that would stop vapor ignition.
Excellent information:
Successful July 1, 2003, all residential 30, 40, and 50 gallon atmospheric vent (normal draft) water heaters are necessary to be equipped with FVIR -flammable vapor ignition resistant design and style. July 1, 2006 - the exact same necessity has been applied to 30, 40, and 50 gallon power-vented residential gasoline water heaters with less than 75,000 BTU input July 1, 2007 - WH conversion to FVIR layout has been extended to all residential water heaters with inputs of 75 000 BTU's or significantly less which includes Electrical power Direct-Vent, Direct-Vent, Manufactured Housing and larger gallon capacity designs not covered in the very first two phases.
three. Elevation of the gasoline water heater over the floor is not necessary if the WH is FVIR -flammable vapor ignition resistant.
Theoretically, this allows you to install the FVIR feature-equipped WH in all of the areas explained over, with no the previously necessary 18" elevation. The new water heaters have a sealed combustion / burner chamber and a push-button igniter mounted on the exterior. Though they even now draw the combustion air from the surrounding region, safeguards incorporated into this new design and style avert gas or vapors ignited within the chamber from escaping into the area.
I mentioned that "theoretically" you can skip the 18" elevation requirement for those essential spots and set up a FVIR kind WH directly on the floor in such environments (i.e. garage floor). Even so, the WH companies and some jurisdictions could nonetheless suggest (or demand) that even FVIR water heaters are set up 18 inches above the garage floor.
Often read through the guide and get in touch with your local code enforcement division ahead of set up - it could save you time and funds.
4. Gas water heater On-the-Ground installation
It requires a three" pedestal (concrete, and so on.) to decrease moisture infiltration / corrosion.
5. Gasoline water heaters on combustible floor
They can be installed directly / without elevation on a combustible floor (unless of course otherwise specified in its guide or by your regional jurisdiction), except on carpeting. If it have to be installed on carpeting, you need to place a wood or metal panel beneath the WH, extending at least 3" beyond its base in all instructions.
six. Electrical water heater in a garage
Some jurisdictions may demand electric WH to be elevated above the garage floor as well. Since of the spot of the lower heating element, an electric WH could have to be raised ten to 12 inches off the floor - check 1st!
seven. Water heater installed in the garage calls for protective guards / bollards in buy to stop a car from driving into it.
That ought to cover the fundamentals of the garage fuel sizzling water heater installation and its burner chamber height over the floor surface concern.
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