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Questions tagged [water-circulating-heating]

A central heating system that transfers heat from a boiler to each room through a fluid filled plumbing system.

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Gas Water Boiler overheats only when zone3 activated

Hello I am having a problem with my gas hot water boiler heating up my Zone3 or 2nd floor. When running the boiler with Zones1 and Zones2 (basement and 1st flr) at high water heat 180F - 220F, ...
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Thermostat Wiring for Zoned Hydronic Heating

I have a 7 zone circulator pump heated using Navien combi-boiler. 3 thermostats are connected to the boiler, and the remaining 4 are connected to a Taco SR-504 relay. All the connections have 2 wires, ...
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Radiator making a "filling up" noise

We recently had our boiler replaced with a heat pump. To help the circulation of the water in the radiators, the engineer installed an external pump. Most radiators now make a constant running water ...
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How do I wire the replacment motor on my central heating valve?

I have a standard 'y' plan central heating system with a Honeywell V4073A1039 3-port diverter valve. The central heating was obviously installed by-the-book because the wiring almost exactly matches ...
ConanTheGerbil's user avatar
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Advice on use of Boiler Reset Device in 2023

Question: I'm looking for wisdom, tips and tricks regarding installation of a "boiler reset", a device that reduces water temperature in a central heating system on moderately cold days. ...
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Bleeding Underfloor Heating Without Manifold (with pics!)?

We have house extension with underfloor heating. Underfloor heating was added after the extension was built. It is very unevenly heated - like 20% of the area. It was like that since we've bought the ...
trailmax's user avatar
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Removing last baseboard heater on (I believe) single pipe/monoflo system

I live in a duplex, I am replacing the floors in my tenant's unit adding radiant heat. There are two baseboards in the living room, each off different piping, they do not connect no loops are formed. ...
ryan h's user avatar
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3 votes
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Question about refill valve on home heating system

I heard some gurgling in our baseboard heat recently, so I decided I should bleed the air out of our system. Never having done this before, I watched a few youtube videos to familiarize myself with ...
Doug's user avatar
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Connection between Copper and Pex pipe broke in extreme cold

During extreme cold month of Feb in East coast, my baseboard radiator pipe broke, basically the connection between the copper and pex pipe broke and water leaked all over. I called a contractor and ...
jay roy's user avatar
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How do I completely drain and decommission hydronic radiant heating system?

Purchased a home which has a floating floor radiant heating system installed in the basement. I am looking to remove the system as it was poorly designed and installed. I've closed off the fresh water ...
rome's user avatar
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How do I close this old German central heating pipe valve?

I am renovating an old apartment here in Berlin/Germany (built in 1957 I believe) that is connected to the central heating of the entire building. It has an old valve at the pipe that is connected to ...
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Hydronic heating system is not working, but still have hot water

A couple of days ago, my hydronic heating system stopped working. Thankfully, the boiler is still working though, so I still have hot water. The details: When no one is using hot water, the boiler ...
red.october's user avatar
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3/4 Hot Water Feed to 2 1/2 "heat zones"

Let me start by thanking you for looking at my question. My oil burner has a 3/4 inch line from the circulator to the heating pipes that feed the downstairs. The 3/4 line splits into Zone A and Zone B ...
Christopher's user avatar
1 vote
1 answer
203 views

What would cause circulators to burn out? [closed]

My MIL has an exterior wood boiler with two TACO circulators that provide heat to the house. She says that she's been replacing the circulators aprox every year because they burn out. Of course this ...
end-user's user avatar
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Do I need to replace my noisy Grundfos UP15-29SU?

We have a Grundfos UP15-29SU circulator pump that serves multiple units and is making a high pitched whine. Is that normal? Do you think its locked up and I need to remove the cartridge? Or do you ...
Graphite Gladiator's user avatar
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How do I flush my forced hot water zones?

I have a weil-mclain boiler with four zones and an indirect hot water tank. How do I purge/flush each of the zones? I would guess the following: Turn off the gas and electricity to boiler and connect ...
Nate's user avatar
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Radiator suddenly stopped heating, removed TSV and it heated again, what to do?

My bedroom radiator (UK here), upstairs, heated fine until yesterday morning, when I found it cold (heating was off all night, as usual). I've removed the thermostatic valve head/knob that controls ...
Luca's user avatar
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Can a homeowner replace this radiant floor heating plumbing part?

My investigations of my non-working hydronic floor heating system led me to the conclusion that the part in the picture is malfunctioning. Can someone let me know what that part actually is and ...
Wynne's user avatar
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Is it normal for a circulator pump on a residential boiler to get hot if the boiler is off?

So, I called a company to take a look at my boiler because I was having issues with the standing pilot light going out overnight. When they showed up, the flame had been out for over 24 hours and the ...
MikeyC's user avatar
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How to Cap off Broken Hot Water Radiators in Heating System and then Pressure Test System

I'm working on a house and I want to remove a few broken hot water radiators (Freeze Damage) so I can test the rest of the system for leaks and integrity. Capping Off Broken Radiators, or run a ...
RocketManZ's user avatar
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How does the sensor in a hot water circulation system inform the pump to turn off? [closed]

I’ve been reading about hot water circulation pumps. The articles will typically have a sentence like “The sensor valve lets the hot water circulating valve know when to shut down and turn on the pump....
irrational's user avatar
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Remodeling basement: water, heating and drain pipes running in parallel?

The piping in our basement is arranged in a way that it is incompatible with our remodeling plans - and the drain pipe also looks quite shoddy, so it needs to go anyway. Also, due to a furnace upgrade,...
ppeterka's user avatar
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What purpose do the extra wires for my boiler thermostat serve?

I am pulling out an existing wood burning boiler, EKO Biomass 40, and replacing it with a Switzer boiler. This boiler will be my primary and I have a secondary oil-burner in my basement. The heating ...
Bob's user avatar
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replacing residential circulator pump flanges with shutoff flanges

About 15 years ago the local heating company installed a new boiler and put on a standard TACO circulator pump with standard flanges that do not isolate the pump; on the boiler side the flange is ...
mr blint's user avatar
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Only one zone heating in a two-zone hot water based heating system (oil)

I have two zones in my oil heating system, down and up -stairs with two separate thermostats one circulator and two zone valves. For some reason the downstairs zone works perfectly well, but the ...
Silex's user avatar
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What is the purpose of this disconnected copper pipe next to my baseboard heating?

I just purchased a home and there is a disconnected copper pipe next to the baseboard heater in the garage. It is connected to the water system, although the connection is currently closed, water ...
user143152's user avatar
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1k views

What modifications needed in order to use used cooking oil for heating instead of diesel?

In Greece the heating oil went up to 1.20 Euros. Meaning that is WAY too expensive to burn. Therefore, I look for alternatives and the used olive/vegetable oil from local souvlaki/gyro store seems ...
Dimitrios Desyllas's user avatar
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1 answer
142 views

Why does my radiant heater have multiple zone valves?

I have in-floor water radiant heating. There are five zones of varying sizes. In some larger zones there are multiple circulation loops split from the supply and then recombined for the return. I ...
Matthew's user avatar
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GFCI outlet trips when one one device is plugged in even when it is off

I have a water circulator that worked fine plugged in the GFCI outlet in the bathroom. Currently the GFCI trips anytime the water circulator is plugged in even when the water circulator is turned off. ...
Ayman Khafagi's user avatar
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How do I move a hot-water convector?

I have a "breakfast nook" section of my kitchen with a large hot water convector installed along the baseboards of two walls. Because of other elements in the heating system located close ...
gnicko's user avatar
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2 votes
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Bleed radiators with no valve - is this valve near the boiler what I want?

I recently bought a house, and with the winter starting to set in (UK), have started putting the heating on in the mornings/ evenings. As many people are at the moment, I am currently working from ...
Noble-Surfer's user avatar
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2 answers
162 views

Radiator leaking from valve-less end

The radiator in my living room is slowly leaking from one of its ends; curiously it's not the end connected to the inlet or outlet pipe, nor the one where the vent valve is, but the fourth one. ...
Federico Poloni's user avatar
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1 answer
1k views

Do i need special ball valve for hot water heating system? Is WOG rating ok?

I am installing zone valves but want to isolate each loop with ball valves. can I use regular plumbing ball valves for this. Max temp would be 180 F.
David Quimby's user avatar
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Can I reduce temperature in one room on my hot water furnace based system?

We have a hot water baseboard furnace heating system. It all works well except for that one room gets way too hot if we are to keep temperature in all the other rooms. This particular room is the only ...
Christian's user avatar
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3 answers
117 views

How impactful will it be to lose 7' of radiant heat pipe in a room?

My home has a hydronic heating system, with fully enclosed floor radiators. In one room, there is a radiator that runs the length of the room, on the outside wall which is about 20' long. In the ...
DonBoitnott's user avatar
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674 views

How close can pex tubing be to a boiler?

I am adding radiators to my 2-pipe central heating (UK). The whole piping is copper 22mm and microbore, and I'm extending it with 15mm pex barrier pipe graded for central heating. I know that the ...
anon's user avatar
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1 answer
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Baseboard water heat not heating one room; Rest of zone/house is good

I have a baseboard water heating system set up in three zones. One zone consists of two bedrooms and a bathroom at one end of my house. The thermostat for that zone is in the hallway connecting the ...
gnicko's user avatar
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2 votes
2 answers
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Power consumption of valve actuators

I would like to acquire some actuators for my radiator valves. I would like them to consume as little electricity as possible. I therefore consider it is better to take normally closed actuators ...
user6301978's user avatar
1 vote
0 answers
291 views

Tankless Hot Water Recirculation

I recently had a Rheem Tankless Water Heater installed. The rtgh-95dvln-2. They installed the pump kit meant for the water heater, the ap17920. However, I do not have a dedicated recirculation line, ...
Kreuzade's user avatar
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-1 votes
1 answer
226 views

How can I figure out if a Combi Boiler will be adequate for my house?

We recently moved into our new home that currently has a Super Hot MG-100 Hydronic Boiler (installed in 1986, when the house was built). Clearly, it's done its job and in need of a replacement. We had ...
nnamerz's user avatar
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0 answers
242 views

Boiler not circulating

I have a Bosch 30 HRC boiler. Yesterday, I added water to the system, increasing the pressure from 1 bar to just below 2 bar. I vented each radiator in the house to bleed the boiler. When I open the ...
LBogaardt's user avatar
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1 vote
1 answer
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Upgated pump for 10 zones, 3 floor house?

I currently have a tanco (I don't have the current model # now) in a 5 zone 2 story house. I was recommended to upgrade to a tanco 0010-F3-1IFC bc I am adding 5 more zones, and 2 zones will go up to ...
Padawan's user avatar
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1 answer
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Removing hotwater baseboard heater

I would like to remove the wallplate of my baseboard hotwater heater element. I got everything apart except the wallplate which I can't get off. I removed the nails that I thought were the only thing ...
Lucy W.'s user avatar
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2 answers
2k views

Can I adjust the temperature of the water in my radiators?

I'm a complete newbie when it comes to HVAC. I did manage to install a new thermostat with help from here so I try again. I have a oil burner baseboard hot water system. My hot tap water is also ...
Christian's user avatar
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1 vote
2 answers
101 views

Using 6 gallon hot water tank as recirculation device

If I pump water continuously through a small 6 gallon hot water tank recirculating from a 60-70 gallon water tank will this work to heat the water over 36-48 hours? I'm not concerned about if it's ...
Andrew Grothe's user avatar
1 vote
1 answer
135 views

Why am I getting cold water at faucets near the end of a circulation loop?

We have a circulating pump for our hot water tank - the pump sits between the tank and the line going into the house. The issue i'm facing is if the pump is not running, I get endless cold water to ...
Greg's user avatar
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0 answers
34 views

We have a ranch home with baseboard heat, 2 zones work 2 zones dont

We have 4 zones and 4 thermostats with baseboard heat in our ranch home.. 2 zones are working, and 2 zones are cold. What would cause this?
BRENDA BOYD's user avatar
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2 answers
223 views

Hot water recirculation pump suggestion in home with return hot water line [closed]

We had a hot water re-circulation pump by water heater before and had it removed last December when we detected leaks around it. This is our setup: We have a return hot water line coming back to the ...
PC Guy's user avatar
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1 vote
1 answer
2k views

Sizing a circulator pump in a closed loop heating system with multiple zones

I'm thinking through an install of a new combination boiler in my house, and am confused with respect to picking the correct size circulator pump. I've found a few different references (e.g. https://...
Kevin Lyons's user avatar
1 vote
0 answers
2k views

How to wire a Taco zone valve controller with ecobee

I'm having an issue with wiring my Weil McLain gas boiler. It was wired up fine and working for a single zone. I added (2) 4 wire zone valves in. So I now have 2 zones, a Taco zone valve controller(...
Kirk's user avatar
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