Hello, my first post. I'm installing a Mr Heater 50,000 btu NG heater in my shop. Its spot will be 25 ft from a 80,000 btu high efficiency furnace. There is a 1inch line coming in the building which reduces to 3/4 to (eventually 1/2" ) into the furnace . There is a tee at the top. Could I tap into that 3/4" tee and run a 3/4" line to the shop heater reducing to 1/2" into the heater? My fear was would the shop heater starve the gas flow to the furnace. Appreciate any guidance.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Mr Heater 50k Need some advise
- Thread starter Cochise
- Start date
nwav8tor
Well-known member
I don't think you'd have a problem, but you should do the calculations to confirm it. It really depends on the length of the gas piping runs and how many fittings (tees, elbows, reducers) are used. Here's a link that shows how to do the math... http://www.gpta.net/Classes/Gas sizing/Gaspipe Sizing.pdf
Not an expert, but did my own with the help of GJ posters,
Paul
Not an expert, but did my own with the help of GJ posters,
Paul
Thanks nwav8tor. I was hoping for more than one reply, but I got lucky. A customer came in today with a heating and cooling van so I hit him up for some free advice. He said the 3/4" line has more than enough capacity for both units, so that's the way I'm going to go. Went to price out the black pipe at Home depot and a little sign says " as of Dec 13 we no longer cut and thread pipe for our customers" Great timing.
Cochise,
Here's what I did - I bought a Rigid 00R hand threader and the right size Rigid 00R die for 3/4" NPT, plus a no-name pipe cutter (Tekton). That way I could measure every piece to exact length and be confident in the threads. I already had a vice with pipe jaws. I went slow, used lots of cutting fluid and it turned out great. I'd do the same thing again in a heartbeat if I had to do the same project.
Here's what I did - I bought a Rigid 00R hand threader and the right size Rigid 00R die for 3/4" NPT, plus a no-name pipe cutter (Tekton). That way I could measure every piece to exact length and be confident in the threads. I already had a vice with pipe jaws. I went slow, used lots of cutting fluid and it turned out great. I'd do the same thing again in a heartbeat if I had to do the same project.
nwav8tor
Well-known member
Glad it worked out for you. I just used readily available standard length pipes and fittings with a flexible line at the end of the run to the heater. No cutting and threading involved!
cdecker
Well-known member
Went to price out the black pipe at Home depot and a little sign says " as of Dec 13 we no longer cut and thread pipe for our customers" Great timing.
Wow, can't believe a Home Depot store would stop offering this service!? I just installed 2 Reznors in my Garage, one on each floor. I purchased all of my black iron at the local home depot, and had them cut everything to length. The old timer cutting and threading my stuff even suggested I put back some of the pre-cut ******* in my cart, as it was cheaper to buy a 10' and have him cut and thread it to all the different lengths I needed. I was there probably an hour, and he cut and thread at least 15 ends for me, all of them flawlessly. Do you have a Lowes nearby? They'll also do it.
What I did was this... Per my town inspectors instructions, I pushed 50' of 1" CSST w/ Flashshield from the house, through a pre-installed 2" conduit. That was vented to the outdoors on one end with a T, and then sealed on both ends in the house/garage. Once in the garage, I transitioned into 1" black iron, and eventually split that into (2) 1/2" lines, one going to each heater. The first floor heater is 45,000 BTU, the second floor a 30,000. No problems at all with having enough gas, and I think it would still be fine with 3/4". The 1" was overkill, in case I ever want to run a generator or something else out there.