Best Of
Re: Swapping out an older wall mounted utility faucet
There are also styles of faucets with a swivel and offset butlt in to the unions that lets you connect it to supply pipes with different centers. Is there a reason you're replacing it instead of just re-gasketing it?
mattmia2
Re: Lochinvar Knight Boiler Flame Fail Ignition Errors - ready to pull my hair out
Natural gas runs at a lower pressure than LP does so the regulators are different and you've got a NG regulator. I've had success swapping springs to get more pressure out of them, they're like $5-8 online. That appears to be a Maxitrol 325-3 reg. Your pressure drop looks good so once you get that spring taken care of, you should be in business. As for the hi limit, you're going to want to make sure there is a load on the unit. Depending how it's wired, you may need to run a circulator with a jumper or cord just to get it to move heat while in service mode.
GroundUp
Re: Good or bad? Tubing
@GW be careful as others have written above. Last job I was on that had very similar looking tubing was a nightmare. I was there for a small leak and found all of the steel near boiler piping on a Weil McLain CG to be clogged and or brittle. Cast iron circulators were also clogged as were the three cast iron flow checks. Three of the ten or so loops to the hot water baseboards were no longer functioning. Homeowner, was in real estate and just wanted it to work as he was planning on selling house soon. I did the emergency repair and sent an estimate for a new boiler and complete re-pipe. Never heard back, feel sorry for the new homeowner. I cannot imagine owning a million dollar (maybe two million now) home and not being able to use three rooms.
@ethicalpaul I think I understand your premise about residential one pipe steam systems not clogging, despite being "open" to the air. However, keep in mind that in most one pipe steam systems, the smallest pipe is typically 1.25 inches. Without a doubt the most clogs we see in this type of steam system is where the 1/2 or 3/4 inch drain valves are located (could be on returns, boiler, etc.). The second most common spot for clogs we see find are on the the lowest horizontal pipe, typically a 1.25" wet return pipe near the floor. My point here is that smaller pipes tend to clog faster than larger ones (on steam and hot water heating systems). Don't forget a small percentage of steam systems are actually filled with water all of the time, as compared to hot water heating systems.
Re: Viessmann cast iron boiler replacement.
First of all, fantastic photo taking advantage of the natural light. Amazing how much a great photo shows all of the details. I especially liked the item that appears to be a flywheel on the back of the workbench. Timer near the boiler is intriguing as well.
Re: Central Boiler Classic Edge 350 piping sizing
For that long a run — 250 feet at least out and back — I'd go with at least inch and quarter. Maybe even inch and a half. It's head loss you're looking at, and keeping the pump size reasonable.
And insulate it.
And no, dropping to smaller sizes inside the house isn't going to be a problem.
Re: Central Boiler Classic Edge 350 piping sizing
If you want the full output, 170,000 btu/hr or so, to the building, then you need to size the pipe accordingly.
So you next need to know the distance.
Here is the 250' result from the calculator at the PPI website for 1-1/4 and 1-1/2" Notice the head loss difference, as @Jamie Hall mentioned.
I would first want to know how many BTU/hr you actually need to deliver. Could be that boiler is twice the size you need? Is this to heat just one building?
The only way to get you a good answer is to have you or someone do a heatload calculation. Then you can make the best tube size decision.
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hot_rod
Re: Central Boiler Classic Edge 350 piping sizing
Saw your post on THT. I agree with Jamie, 1.25" pipe at minimum. May cost you a few dollars more for 1.5" but you likely only will do this work one time. Keep in mind with larger pipe (tubing) you reduce the friction of the pipe, often allowing for a smaller pump (and less electricity draw).
I did not notice where this home is located (climate area), I assume your in a rural area with free or almost free firewood. The reason I mention this, is we normally base main trunk pipe sizes on load (heat loss) and length. You mentioned the total square feet of heating space will be 2300 square feet. In some areas this could be as little as 23,000 BTU in the dead of winter and in bitter cold areas this could require as much as 125,000 BTU.
Re: Viessmann cast iron boiler replacement.
Yes, it is atmospheric and I hadn't seen it either until now. It was a big deal in its day
JohnNY
Re: How to prevent hydronic piping from freezing?
I'd go to glycol …. but don't keep the water make-up, change it to a small glycol make-up reservoir. These small units are available with pump included to address this problem.
akjim