How do I safely vent an LP Garage heater - Heating & Cooling

Question edited for a lot more clarity.

From the maker.

Fuel Conversion Kit NG to LP

Mr. Heater https://www.mrheater.com > fuel-conversion-kit-ng-to...

Fuel Conversion kit for changing NPP overheads to LPP and from NG to LP. Kit includes all necessary labels and components required for the complete ...
US$33.69

Mr. Heater ventless wall heater convert to LPG

The Garage Journal https://www.garagejournal.com > ... > Heating and A/C
Mr Heater supports converting the Big Maxx 50 and 80 from NG to LP and sells a kit with the orifices for $25. https://www.mrheater.com/big-maxx-fuel- ...

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Could be a gas pressure issue and/or improper venting. Natural gas or LP (propane)?

Hi,
You have this posted under the Z-vent heading... is that the make pipe that came with the stove, and if not, what vent pipe came with the stove... we need to know which pipe it is exactly to be able to help you best...

heatman101

First off, Dave, the tank cannot be inside the house, motor home, camper, garage, etc. By the way, I believe your 10 gallon tank, is what's called a 40LB cylinder. Anyway, 10 gallons is not going to last very long, if the heater you plan to install is 20,000 Btu output or higher. If it's going in a bedroom, the maximum Btu output can not exceed 10,000 Btu's.

To install one, you'll need 1/2" flexible copper gas piping. An in-line LP Gas regulator, that has the capacity to carry whatever the maximum Btu output of you heater is. In addition, you will need a 1/2 NPT to 3/8" Flare nipple to go into the back of the heater. Assorted Flare Nuts in assorted sizes for the gas line connections.

Tools needed: Flaring tool, 2 adjustable wrenches, Phillips Head Screw Driver & Leak Detector Solution. To make sure it's done correctly, a Mechanical/Plumbing Permit from you city or county's Building Inspection Department. And last, but not least, a friend that has a lot of knowledge in the installation of Vent-free Supplemental Gas Heating Appliances.

If installed properly, these appliances are very safe. If installed improperly, they can be very dangerous.

Sorry, it can not be converted. At least not safely. It's a Vent-free Gas Supplemental Heating Appliance, that is manufactured for one specific gas type, either Natural Gas or LP Gas. There are NO conversion kits for these units or any Vent-free gas appliances for that matter.

If it's operating properly, is T-Stat controlled and is properly vented to the outside, it should be safe to operate all night. I suggest that you set the Wall Thermostat no higher than 50 degrees, though.

Too much gas pressure. Are you sure that this is a LP heater and not a Natural gas heater? Is the regulator you have rated under 1/2 pound pressure? Try to throttle down the shutoff on the tank to see if pilot gets better. If so, you have a pressure issue. Gas you adjust the pilot gas valve?

That heater was not designed to be safely converted to Natural Gas. Even if you could convert it, it would cost more to do that than to replace the heater.

flue is overheating make sure outlet is not obstructed outside and if not that you feel a good air flow coming from it

Is it safe? That depends on what you are working on. Having a fire/heat source on the floor is a possibly of an explosion if you have gasoline fuel vapors.

For the most part it is safe, you will smell when you leave the garage, but as long as it is not a real air-tight garage you would be ok.

I run a propane heater in my garage during the winter to get away for a bit. I also have a well ventilated area and don't work on gasoline related items during the winter with that on.