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Garage Gas Hot Water Heater Lifted Previously mentioned the Ground – FVIR Safety


The subsequent are the general prerequisites for the garage gas hot water heater installation regarding its burner chamber peak previously mentioned the ground surface. Relying on the product / variety / age of your specific water heater and your jurisdiction, they might or may not implement – constantly test just before the installation.

If there is certainly no manual outlining the installation requirements for your equipment, contact the manufacturer and ask for installation directions for your specific design (in most circumstances you will be ready to get hold of it on the internet).

Nonetheless, the guidelines stated under are extremely essential. If they do utilize to your equipment, you may possibly be putting your lifetime in threat by not next them.

As a normal requirement, you ought to not set up a water heater in any site in which gasoline, flammable vapors or liquids, and flamable materials are very likely to be current. These installation may end result in an explosion or hearth, but at times there might be no other decisions. If this is the place you’re standing correct now, you need to comply with the regulations.

1. How significant ought to the WH be lifted off of the garage ground?
The garage (cost-free standing or connected) is a single of those not-preferable spots for the water heater installation, but often it is the only one particular.

Ignition supply (pilot, electronic igniter, scorching surface area igniter, and many others.) have to be 18″ from the garage flooring.

The exact same rule applies to the WH that has been set up in a room opening to the garage, this sort of as a utility closet, or utility home. This applies even if the doorway(s) separating the garage and the equipment place are air restricted / self closing.

2. Water heater ignition resource must be 18″ from the flooring in an place wherever flammables are stored.

If you happen to be installing the WH in an region that is also committed to storing flammables or you will find a risk of these types of materials being stored there, put the equipment on a platform so the ignition supply is at the very least 18″ previously mentioned the ground surface. Make certain that this platform is able of supporting the body weight of the stuffed WH.

The way it typically will work in our households is that although seeking for some storage house we things our utility home / closet with every thing that won’t match wherever else. Items this sort of as leftover paint, paint thinner, all sorts of cleansing chemical substances, container stuffed with emergency gasoline, etcetera are normally observed below. Is this how your WH closet appears? Effectively, you are not by yourself.

Moreover accidental spillage, some of individuals plastic containers may just soften down though standing up coming to the water heater or on prime of it, spilling its contents, and leading to vapors to ignite underneath the WH and inside of the burner chamber – go and glance about your appliance’s base. Will not thrust it to the aspect! Acquire it out of there!

Negative news: most of the WH manufactured prior to 2003 experienced an open up combustion chamber and they ended up not geared up with a security device that would prevent vapor ignition.

Fantastic information:

  • Successful July 1, 2003, all residential 30, 40, and 50 gallon atmospheric vent (normal draft) water heaters are essential to be equipped with FVIR -flammable vapor ignition resistant structure.
  • July 1, 2006 – the similar prerequisite has been applied to 30, 40, and 50 gallon electric power-vented residential gas water heaters with fewer than 75,000 BTU input
  • July 1, 2007 – WH conversion to FVIR layout has been prolonged to all residential water heaters with inputs of 75 000 BTU’s or less like Energy Direct-Vent, Direct-Vent, Manufactured Housing and bigger gallon ability types not included in the to start with two phases.

3. Elevation of the gas water heater earlier mentioned the flooring is not essential if the WH is FVIR -flammable vapor ignition resistant.
Theoretically, this allows you to set up the FVIR element-outfitted WH in all of the locations stated higher than, with no the previously needed 18″ elevation. The new water heaters have a sealed combustion / burner chamber and a push-button igniter mounted on the exterior. Whilst they even now draw the combustion air from the surrounding area, safeguards included into this new layout protect against gas or vapors ignited within the chamber from escaping into the space.

I mentioned that “theoretically” you can skip the 18″ elevation necessity for all those critical places and put in a FVIR variety WH instantly on the flooring in these environments (i.e. garage ground). Even so, the WH companies and some jurisdictions may perhaps nonetheless advise (or need) that even FVIR water heaters are put in 18 inches earlier mentioned the garage floor.

Often go through the guide and simply call your local code enforcement division before installation – it could preserve you time and dollars.

4. Gas water heater On-the-Ground installation
It demands a 3″ pedestal (concrete, and many others.) to minimize dampness infiltration / corrosion.

5. Gas water heaters on flamable floor
They can be put in immediately / without the need of elevation on a combustible floor (until otherwise specified in its guide or by your nearby jurisdiction), apart from on carpeting. If it must be mounted on carpeting, you need to place a wood or steel panel beneath the WH, extending at least 3″ over and above its foundation in all directions.

6. Electrical water heater in a garage
Some jurisdictions may demand electrical WH to be elevated higher than the garage ground as very well. Because of the site of the lower heating aspect, an electric WH may have to be elevated 10 to 12 inches off the floor – check initial!

7. Water heater put in in the garage involves protective guards / bollards in buy to reduce a motor vehicle from driving into it.
That should go over the fundamentals of the garage gas hot water heater installation and its burner chamber peak earlier mentioned the ground surface concern.

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