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6

Dangerous advice warning: As pointed out in the comments and other answers, this is the improper solution for a flared gas fitting. Just got back from the hardware store with this: It's apparently similar to Teflon tape that you would use on a water fitting, but made specifically for gas. There is also a compound available, but I chose to use the tape ...


5

I cannot fully answer your question, but it seems that New Hampshire simply uses the ICC guidelines for building codes, including for "Plumbing, Mechanical and Fuel Gas" which seems to be the key area here. Not being an ICC member, I can't access the documents, and neither the New Hampshire Statutes website nor the State Building Codes website reprints ...


4

Corrugated pipe is generally intended only to be used as the last connection to an appliance, in a living space where it not vulnerable to banging or jostling (usually behind or in a space at the bottom of an appliance), but where it can be seen and accessed if work is being done. It is not intended to be buried in a wall, where it could be pierced by a ...


4

The tape you purchased is the correct tape for gas fittings. However, the fitting in your picture is a flared fitting. PTFE (Teflon) tape/pipe dope is only necessary on pipe thread fittings. This is because pipe threads are tapered - as you tighten the fitting, the threads bind together and deform slightly to create a seal. The pipe tape/dope helps ...


4

Use of thread seal tape does not work on the fittings that screw directly into an aluminum propane regulator. I don't know if the changes in seasonal temperature cause the aluminum to contract and expand (or something else) but six months later the fittings will be loose and leaking. I suggest using a hardening compound.


4

Short answer is, because the 1/2" flexible tubing is short enough to not cause a major pressure loss. If you ran 1/2" line the whole way, it would be too much pressure drop. Pressure drop across a pipeline is a function of all the friction losses added together. These include "major" losses (the official terminology, not mine) from the friction with the ...


3

If the house is unoccupied it's likely "winterized", which may include disconnecting the fuel tank. You'll likely have to contact the home owner or fuel supply company, and make an appointment for them to meet you and reconnect the tank temporarily. DO NOT RECONNECT THE TANK YOURSELF. If you do not own the property, it is not yours to muck around with as ...


3

When I first read this, my first instinct was "don't", and I think that still holds. You are mixing water, electricity and possibly natural gas in a single untested design, and if anything goes wrong your pool could drain out, you could get electrocuted going in the water, or you could even end up with a bomb. It's not worth whatever costs you'd save ...


3

Where is the tankless water heater to be located? If it is in a space that is heated, then freezing will not likely be a concern as there will be plenty of heat gain through the equipment enclosure. If freezing is still a concern, look for a tankless unit that has a electric element for freeze protection. This will use a lot of energy if the unit is located ...


3

You'll need to look into your local code to find out if it's approved. Where I live, compression fittings aren't allowed for gas but flared fittings are. If you're not sure, you should contact a licensed gas fitter in your area.


2

You're question is vague and has a couple sub-questions, so let me offer a little Q&A: Q: Are there any central heating furnaces that use propane? A: Yes Q: Can I convert an existing natural gas furnace to use propane? A: Perhaps, but only with a manufactorer-approved adapter. Propane has more energy than natural gas does, so you must not just swap out ...


2

It's possible, but unless your furnace is way over sized, you can't just stick a heavier box in the same packaging and burn wood in it. You can reuse the duct work and blower, but everything else would need to be replaced. Depending on how much heat you need, it may not make sense to place the fire box where your furnace is. Further more, you may want to ...


2

I usually encourage DIY projects, but when it comes to gas applications, I have to strongly caution you to consider using a licensed gas installer to connect an on demand water heater. Nothing in a home is more dangerous than gas and it MUST be installed correctly and pressure tested. Venting the exhaust is extremely important as well, and a mistake can be ...


2

I'm not sure exactly where this pipe is, or how far back the pipe runs. Though most codes now call for a shutoff valve be installed for each appliance, in the same room and within 6' of the appliance. I'm going to assume that the piece of pipe you're looking to replace, runs from the shutoff valve to the appliance (this might be a terrible assumption, but ...


2

If you are using the standard propane fittings and adapters, nothing else should be needed. Not tape, dope, paste, nor putty.


2

The short pipe you show is a section of tapered NPT black iron pipe. As a sidenote, there should not be pipe dope inside the pipe, the dope should only be on the threads. The section of corrugated pipe is most likely designed to connect to a flared pipe with straight threads. The required two adapters should have been sold with the pipe because it has to ...


2

You need a 3/8" female NPT x 3/8" male flare thread adapter. Any good hardware store or plumbing shop.


2

FYI: The local propane company requires that I maintain a 12" vertical separation with my electric line, so it must dip to 32"+, supplying 12" of separation under the crossing LPG pipe; in No. Calif.


2

It's either the knob or (much more likely) the thermocouple. Related: Oven wont heat past a certain point.


1

Your propane prices (and fuel oil, for that matter) are pretty steep. They're barely competitive with even simple, pure electric resistance heat. Even if the propane furnace manages to come out ahead of your oil system, there are electric systems that will be far cheaper to run. Some options to consider: Electric Thermal Storage - Using time of use ...


1

First, check to see if there are any tax breaks on the LP system for your area. My rule of thumb on energy savings savings is, it must pay off in less than 10 years or half of it's usable life (which ever is shorter). Since you have to replace the unit, see if the difference in cost - expected savings in energy over 10 years justifies going LP. A lot of ...


1

It's very common to use either hard-drawn or soft-drawn copper for gas, whether natural gas or propane. Using it for long runs is not generally the greatest of ideas, but I don't think there are any laws against it - the issue with soft-drawn for long runs is the risk that some idjit will hang something really heavy from it & kink it or outright break ...


1

Buy a captive-air (bladder) pressure tank (accumulator) and be done with it. If you pressurize water with nitrogen without a bag/bladder/diaphragm, you're going to discover that nitrogen does dissolve in water. This is a very evolved technology where you are stunningly unlikely to invent something better than what already exists, and certain to spend more ...


1

To pressurize water you can simply put a tank on the roof (or build a new water tower) and feed with pumps from storage tanks lower down. This is done in in many high rise buildings in New York were the municipal water pressure is not big enough to reach the higher floors. If the roof is not strong enough to hold a water tank (and you are not allowed to ...


1

I'd use a pair of Tongue-and-groove pliers, just be careful not to crank too hard.


1

no. the problem you find will be the odor of the gas, not the fire risk. Just air the room a little, you'll be good. keep the candles for the next day. Good idea put in a valve for next time.


1

Sounds like you should hire a qualified gasfitter. A properly connected compression fitting will not leak, but there's no point in DIY-ing gas lines if you're not 100% sure of your ability to get a leak free connection. Your propane supplier will usually either have people on staff, or know who to recommend locally.


1

Yes, you can run a tankless water heater off a standard Propane cylinder. However, that will limit the amount of hot water you can make. Even if you want to do the install yourself, you're going to need to buy the parts somewhere. I suggest that you start by looking at what models are available at stores near you. The sales people will be able to tell you ...


1

You are really asking a flow question. How many CFM (cubic feet per minute) does a given size pipe supply. The upper limit will be the meter capacity/ pipe size from the street. Each device has a max flow rating. Add them up and compare to the size piping you are planning to use. Increase the pipe diameter as necessary (up to the size coming in to the ...


1

The short answer is all you need is a new orifice. The complicated answer is : don't do that. Ventless systems have been banned in various places, and come with significant hazards not fully mitigated by a carbon monoxide detector. Read for instance : ...



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