One pipe heating system
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One pipe heating system (by Tonia [RI]) Nov 14, 2021 12:44 PM
       One pipe heating system (by AllyM [NJ]) Nov 14, 2021 12:57 PM
       One pipe heating system (by NE [PA]) Nov 14, 2021 1:00 PM
       One pipe heating system (by Tonia [RI]) Nov 14, 2021 4:23 PM
       One pipe heating system (by Smokowna [MD]) Nov 14, 2021 5:08 PM
       One pipe heating system (by Steve [MA]) Nov 14, 2021 7:58 PM
       One pipe heating system (by Ray-N-Pa [PA]) Nov 14, 2021 8:07 PM
       One pipe heating system (by Robert,OntarioCanada [ON]) Nov 14, 2021 8:14 PM
       One pipe heating system (by don [PA]) Nov 14, 2021 9:56 PM
       One pipe heating system (by Steve [MA]) Nov 14, 2021 10:13 PM
       One pipe heating system (by Jim [OH]) Nov 15, 2021 9:06 AM
       One pipe heating system (by Jim [OH]) Nov 15, 2021 9:10 AM
       One pipe heating system (by NE [PA]) Nov 15, 2021 9:12 AM
       One pipe heating system (by NE [PA]) Nov 15, 2021 9:18 AM
       One pipe heating system (by Tonia [RI]) Nov 15, 2021 11:37 AM
       One pipe heating system (by Robert,OntarioCanada [ON]) Nov 15, 2021 9:58 PM
       One pipe heating system (by tonia [RI]) Nov 16, 2021 10:34 AM
       One pipe heating system (by Robert,OntarioCanada [ON]) Nov 17, 2021 12:17 AM
       One pipe heating system (by Tonia [RI]) Nov 18, 2021 10:17 AM

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One pipe heating system (by Tonia [RI]) Posted on: Nov 14, 2021 12:44 PM
Message:

Landlords, I have a one pipe gas furnace heating system. The tenant complaining baseboards no heat. Baseboard is warm to touch thermostat at highest setting. I suspect air bubble in system. Is there an easy way for me to bleed system?

--172.58.xxx.xx




One pipe heating system (by AllyM [NJ]) Posted on: Nov 14, 2021 12:57 PM
Message:

There is a valve someplace but with baseboard, one pipe, I had to have a plumber drain a lot into a bucket in order to get the bubbles out. I wouldn't risk making a mess. Get a plumbing heating guy. Mine went through wooden fake cabinets and needed a long screw driver to reach the valves. Let someone do it who knows. --108.24.xx.xx




One pipe heating system (by NE [PA]) Posted on: Nov 14, 2021 1:00 PM
Message:

Are the baseboards hot coming back to the furnace on the return pipe? If they are hot going out but cold on the return, it may also be a circulating pump. --24.152.xxx.xx




One pipe heating system (by Tonia [RI]) Posted on: Nov 14, 2021 4:23 PM
Message:

I have an HVAC guy coming out on Tuesday. Thank you Ally and NE for feedback. --172.58.xxx.xxx




One pipe heating system (by Smokowna [MD]) Posted on: Nov 14, 2021 5:08 PM
Message:

Let us know what you find. Thanks --96.241.xxx.xxx




One pipe heating system (by Steve [MA]) Posted on: Nov 14, 2021 7:58 PM
Message:

I'm confused, furnaces make hot air & distribute this hot air thru duct work & registers. Are you sure that you have a furnace & not a boiler? Boilers can make either steam or hot water which is what you normally find in 1 or 2 pipe systems.

FYI steam systems do NOT require a circulating pump to work but forced hot water systems do need a circulating pump to work efficiently.

Could you post a picture of one of the radiators / baseboards & the furnace / boiler?

I imagine from your description that you most likely have a boiler that either generates steam which rises by convection to the radiators / baseboards. Once the steam cools down & condenses, it flows as warm water back to the boiler. If it's a steam system them the baseboards are either clogged or not pitched properly. If it's a forced hot water system, it could be air bound or have a defective circulator or zone valve.

Perhaps what you actually have is a conventional boiler with 1 or more circulators which pushes hot water thru a pipe to the first radiator then by use of a venturi fitting allows some of the HW to flow thru the radiator & the rest to go on to the next radiator further down the line. This type of system was popular back in the 1950s - 1960s.

It's also possible that you have a 1 pipe closed loop which basically means the HW leaves the boiler travels to the first radiator, continues thru this radiator & continues on to the next radiator, thru this radiator & on to the next radiator & eventually after going thru each radiator on that zone returns back to the boiler. These systems have been pretty much the norm since the late 1960s.

This link has a couple of pictures explaining this. ://www.jlconline.com/how-to/hvac/piping-layouts-for-hydronic-heat_o

If you do have a forced hot water system & the baseboard radiation is only getting luke warm it's most likely do to a problem with the circulator or a zone valve. An experienced plumber or heating person should be able to figure this out very quickly. --71.174.xx.xxx




One pipe heating system (by Ray-N-Pa [PA]) Posted on: Nov 14, 2021 8:07 PM
Message:

On many of these systems, the air vent lines are the same size as the water lines for your frig. The air pocket, if you have it will tend to work its way towards the top of the system so if you have a second floor, place the drain line into a small bucket and bleed the air out by burping the lines. --24.101.xxx.xxx




One pipe heating system (by Robert,OntarioCanada [ON]) Posted on: Nov 14, 2021 8:14 PM
Message:

It possible to convert system to forced hot water where a circulation pump moves the water. Steam heating is the least efficient of any radiation system as steam operates at high temperatures. Steam heating here is very rare where only buildings that over a hundred years old use steam radiation. The easiest way to convert is use commercial Uponor pex piping then pipe in baseboard radiators. Expensive with a hot water radiation is to use a high efficiency wall mounted gas boiler then separate out heating where tenants control and pay for heat used. --99.236.xxx.xxx




One pipe heating system (by don [PA]) Posted on: Nov 14, 2021 9:56 PM
Message:

A one pipe system is a steam system where the steam rises through the pipes, condenses, and runs back to the boiler as water in the same pipes, which are pitched back towards the boiler. I don't see how you can have an air bubble in a steam system. --73.141.xxx.xxx




One pipe heating system (by Steve [MA]) Posted on: Nov 14, 2021 10:13 PM
Message:

Don[PA] & Robert Ontario, I think that she actually has a FHW system which could very well be a closed loop 1 pipe system or an open looped system which use venturi valves at each radiator takeoff. --71.174.xx.xxx




One pipe heating system (by Jim [OH]) Posted on: Nov 15, 2021 9:06 AM
Message:

You do not have a furnace system. You have a one pipe steam system. Each rad should have a vent valve on it. Those valves release air in the system to atmosphere on heating up. Those same valves allow air back into the system on a cool down to prevent a vacuum situation which is very not a good thing.

If you have bad heat distribution from your rads on a one pipe system, then you need new vent valves installed on the offending rads. --184.57.xxx.xx




One pipe heating system (by Jim [OH]) Posted on: Nov 15, 2021 9:10 AM
Message:

Further. If your system is a multi zone hot water heating system, only a bleeding of the aie will solve the problem. Most baseboard rads have manual vent valves to eliminate the air. Air in a system impedes water flow like right now. --184.57.xxx.xx




One pipe heating system (by NE [PA]) Posted on: Nov 15, 2021 9:12 AM
Message:

This doesn’t sound like a steam system. I wouldn’t think the radiators will just get warm. I would guess the vent works or it doesn’t. I would think they will either get full steam or they won’t. It sound like hot water baseboard. Tonia, what kind of system do you actually have? Definitely not a furnace. --24.152.xxx.xx




One pipe heating system (by NE [PA]) Posted on: Nov 15, 2021 9:18 AM
Message:

Jim, it sounds like a single zone. --24.152.xxx.xx




One pipe heating system (by Tonia [RI]) Posted on: Nov 15, 2021 11:37 AM
Message:

I am thinking it is a gas boiler, not a furnace as described. These baseboards and coils are in rough shape but they do work well. The tenant has a history of blocking the vents with furniture, etc in the past. I have told this tenant the baseboards need to be free and clear to allow heat to rise properly. Robert Ontario, the tenant does pay for own heat but she is a bit of a hoarder. I can probably terminate her for cause for poor housekeeping but she pays rent so I am trying to work with her for now. This type of air pockets has happened on the 2nd floor during the winter from time to time. I do believe it is a hot water baseboard but I do not see any valves on them. I will send more information tomorrow when I met the HVAC guy. Thank you all for your feedback. --68.15.xx.xx




One pipe heating system (by Robert,OntarioCanada [ON]) Posted on: Nov 15, 2021 9:58 PM
Message:

Copper finned baseboard radiators are a low mass where a length of 3/4' copper pipes does not hold a lot of water where if there is air in the system then the radiator will put out a small amount of heat. On upper floor install automatic vent valves made by Honeywell Brackmen along consider installing a Spiro Vent air and dirt separator on the hot pipe from the boiler where over time the air and dirt will be taken out of system. It is best to remove the covers on copper finned baseboard then with a brush and shop vac thoroughly clean all the fins out where air flow is very critical to heat room. Found by installing reflective tape above the fins more heat will be radiated into room instead wall. Had many problems with top floors in apartment building where with automatic air vents along with Spiro vent air and dirt separator a lot of the problems were eliminated. Had locking Danfoss non electric thermostatic radiator valve where if a couch was put up against the copper finned radiator then the heat would turn down as the heat is trapped behind couch. Insulating all the heating pipes and hot water pipes where the hot boiler is located will put more heat into the building where the cost pipe insulation is low but over time the heat savings will pay off. Cleaning all fins in the radiators will lower the temperature it takes to heat a room. View some videos on copper finned baseboards along automatic radiator vent valves. --99.236.xxx.xxx




One pipe heating system (by tonia [RI]) Posted on: Nov 16, 2021 10:34 AM
Message:

Oh, that is great advice Robert Ontario. Meeting HVAC guy later and will do this as well! Many thanks!! --68.15.xx.xx




One pipe heating system (by Robert,OntarioCanada [ON]) Posted on: Nov 17, 2021 12:17 AM
Message:

Insulating heating pipes, hot water pipes is DIY installation where can insulate a few pipes at a time then gradually insulate all the heating, hot water pipes in boiler area. Un insulated pipes act a radiator where heat is going to where heat is not required. You Tube has many helpful videos on how to insulate heating, hot water pipes.First determine the diameter of pipe then can buy the right pipe insulation. Where if the overall temperature of the heating, hot water pipes is lowered by 10 to 20 degrees then that is significant reduction in energy costs. Baseboard heat is in series where at the beginning the water temperature is at the highest then lowest at the end of the loop. If have a thermal scanner or point temperature reader then can determine where the beginning and end of loop is. Most apartment buildings think of the boiler area as a heating plant where gaining maximum efficiency is important. --99.236.xxx.xxx




One pipe heating system (by Tonia [RI]) Posted on: Nov 18, 2021 10:17 AM
Message:

Update: HVAC guy came and bled system, installed new digital thermostat. In doing this we also noticed a leak on water tank and that is getting repaired. Timing is everything. Thank you all dear Landlords.. great feedback! --172.58.xxx.xxx



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