Best Of

Re: Last Weeks Oil To Gas Conversion

Geez the old oil boiler looks brand new. Did they replace it just to change fuels? Or did it fail?

EBEBRATT-Ed

1

Re: Help me swap my Gorton #1 main vent (with free used Hoffman 75) ?

@EdTheHeaterMan I bought a 24" pipe wrench at HF today. If I can break it free, I'll order the #2 Gorton.

CoachBoilermaker

1

Re: Old steam boiler

I called up the company and put a pause on everything and contacted a company that works for the city of Beacon which will be honest with us and work in our interest. Thank you all.

ivyleague96

2

What @EdTheHeaterMan sid improper pitch on the branch piping feeding the rad or a defective valve (maybe the disk inside the valve fell off and is blocking the pipe but the pitch is the most likely culprit.

There is probably a low spot in the pipe that fills with water. Over the summer some of the water evaporates and the rad heats at first.

EBEBRATT-Ed

2

Re: Single Steam Radiator isn't Heating Up

https://forum.heatinghelp.com/discussion/comment/1816006#Comment_1816006

"slopes in the wrong direction"

Yeah, that'll do it.

delcrossv

1

Re: Is it bad if a modulating boiler never runs deep into the turn down ratio, or high in its capacity?

many of the mod cons allow you to step fire them My Lochinvar with a 10-1 turndown has 6 adjustable steps.

I run 2 minutes at 20%
1 minute at 40, 60, 80 and 90%.
It also has anti cycling, where you block the next heat call for a programmed time. So you can program out most any potential short cycles. You can also limit the high fire btu output

The lower the firing rate, ie a 119k boiler limited to 67k, the boiler is more efficient as you have a large HX exposed to a small flame, so more condensation

See what control options are in that boiler

hot_rod

2

Re: Is it bad if a modulating boiler never runs deep into the turn down ratio, or high in its capacity?

Depends on whether you plan to drink the water or shower in it — or just keep it in your heating loop.

For domestic hot water, yes 120 F is the lowest you should go, and 140 with a tempering valve on the output is even better. That is for any tank storage, of course. An instant hot water heater will be different.

For the heating side, you can go as low as you want, and as the folks above have pointed out the lower you can go the better your efficiency overall will be.

Jamie Hall

1

Re: Is it bad if a modulating boiler never runs deep into the turn down ratio, or high in its capacity?

The boiler you specified in your link is not a DHW heater

It does not say Combi or Water Heater. It states "Heat Only". That indicates a closed system central heating system of some design.

I personally don't think that Legionella is going to happen in a closed system. and even if it does, the next heating cycle over 140° will certainly kill it off. Furthermore if you do not have any reason to open the closed system, then anything nasty in there won't be getting out any time soon.

Of course you can always connect an indirect water heater to that boiler. then you can use the DHW in the tank. but that tank is separated by a heat exchange from the closed system boiler water.