Hi everyone,
I just recently did my g3 exam(thanks to this fourm).
I have a question for you guys.
I have a customer here looking for a gas install.(not to be preformed by me FYI).
He sent the company I work for these pics and wondered if we could install his applaince.
He bought a 132k btu stove
Run is 37 ft
Cooper 1/2 lines x2.
Orignally he has 1/2 running to the range.
The other 1/2 was used for a BBQ directly outside of the location where the range is installed.
We advsied our booklet required 3/4 line
His gas fitter came and merged the 2 1/2 lines and removed the bbq.
Does this work? Or have you guys seen this before?
Any input would be great.
Thank you.
Which appliance is the furthest from the gas meter and how long is that piping?
At 40' two 1/2" copper gas lines will supply 68,000 BTU's according to Table A.9.
The book likely referenced 3/4" rigid piping as even 3/4" copper would be too small.
A normal 56,000 BTU stove would be a better choice with the existing gas line.
The stove is the furthest unit from the gas meter.
That is what I thought as well. I know its an older home , which may be the reason why they used cooper.
However, it's not common anymore.
I figured even if we added the 2 gas lines (assuming it meets the code) it will still not be enough.
Ironically enough he repalced a stove with 150k BTU before puraching this. Apparently he didn't have issues for over 14 years of ownership.
So this appliance is original fed 1/2" black iron and then two more additional Tee's of 1/2" copper runs are added to it for some extra btu output? I can see it working in theory. Also, the home owner would likely never have every single burner on at the same time and at the highest setting.
It is a total hackjob way of doing something. I'm not sure if it would be against code, I'm sure there has to be some infractions that can be written up for this. I've never in all my years seen this before. I've joked about this concept in situations where a lack of btu's was present, but I would just do it properly or walk/run out the door.
I agree. Rarely will every gas appliance be on with every stove burner. Some techs may issue a warning tag if the pressure drop exceeded 1" though.
6.3.1 - Piping, tubing, and hose shall be of sufficient size to provide a supply of gas to meet the requirements of volume and pressure at the point of use.
6.3.2 - A gas piping system supplied at pressures up to and including 14 in w.c. (3.5 kPa) shall be designed to prevent the loss in pressure between the appliance and either the termination of the utility installation or the last-stage regulator from exceeding the maximum allowable pressure drop specified in Table 6.1.
If there is a silver lining here. That last copper Line is at least using forged fittings :)
It appears to have a 3/4 coming from the mainanifold then
Splits to 2 1/2" Cooper lines.
The back pipe you see going into the wall was the original line for the bbq.
I think if this customer had 2 5/8 th lines it would have worked.
69k BTU eash. However I agree, it's a hack job for sure.