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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Runtal Baseboard Pipe Hole Spacing From Wall

The spec for Runtal baseboards shows that the pipe center when coming straight up from floor should be 1" from the wall the baseboard is mounted on. I feel like this is very close. Can I shim the ...
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Improving efficiency of central heating system [closed]

We have a furnace, originally designed for burning coal or wood, rated for 35kW of heating power. The previous owner of the house retrofitted an industrial gas burner on this, rated for 55-110kW. The ...
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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 ...
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1 answer
81 views

How does the sensor in a hot water circulation system inform the pump to turn off?

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....
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Is boiler water inhibitor treatment standard in the US?

I have hot water heat with a Slant-Fin S-120 boiler. I emptied and refilled the system with water. There are lots of web pages (including Slant Fin) recommending treating the heating system water with ...
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Does the heating system's boiler combi close the loop when is shut down?

I'm planning to make a mains flush to my heating system piping/radiators but for my plan to work (that is, clean water flow through radiators) I need to be sure the boiler combi mechanically closes ...
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Key to spin valve from heating towel rails radiator (to install inhibitor)

I want to insert the inhibitor in the heating piping system. I watched a tutorial wherein it was mentioned that the best way is through a towel radiator, but I need to close the valves/taps on both ...
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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,...
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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 ...
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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 ...
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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 ...
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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 ...
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351 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 ...
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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 ...
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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. ...
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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 ...
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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 ...
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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. ...
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1 answer
364 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.
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857 views

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 ...
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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 ...
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426 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 ...
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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 ...
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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 ...
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188 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, ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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2 answers
68 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 ...
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100 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 ...
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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?
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206 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 ...
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1k 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://...
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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(...
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Is hydro air more efficient than gas/oil?

I have heard different things about hydro air systems. I am considering getting one because it is a 5000 SF house and a 1500+ SF addition is planned and I heard that it is easier to expand a hydro ...
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Could I use perlite under floor heating foam panels?

Context: I want to install an in-floor water based heating system in an apartment on a higher floor. As such, there are 2 problems: I cannot afford to have 2 layers of screed (because I need ...
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Peerless Boiler not heating - No flame

I have a Peerless boiler and today woke up to it not heating the water. The water definitely feels like it is circulating through the pipes, but the water temp isn't getting over 60 degrees. We had it ...
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Should hot water heater pipes in the basement be insulated?

I have a Gambrel style home with gas fired baseboard hotwater system. The hotwater pipes in the basement are located to the outside wall. These pipes are not wrapped in insulation. Would wrapping ...
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3k views

What could cause my hot water to run out quickly... but only in the bath/shower?

My (London, UK) apartment building's hot water comes from a district heating system and is delivered to my apartment via a "Heat Interface Unit" within the property, owned and maintained by the energy ...
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Vibrating through beams from circulator pump and at strange times

I have a grundfos alpha 2 circulator pump which for the last two years (since I moved into the house) when the heating turns on makes a vibrating noise. This vibrating noise I believe is then ...
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Is it possible to test a drained central heating system without filling it with water

Say there is a house with a just combination (combi) boiler for hot water, but the central heating system has been drained for a couple of years as the house has been uninhabited. Is it possible to ...
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Bedroom Radiator not operating properly

We have two Nest thermostats installed over a month ago and I am not sure the issue was after or before the installation of Nest thermostat. We have two zones of heating installed in our house. One is ...
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Nest E thermostat on ancient 2-wire Bryant boiler system with 2 zonesq

I have a 2-zone hydronic system running off an ancient Bryant boiler. Power is supplied by a 24V transformer, and each red wire passes through a Taco zone valve before heading off to the appropriate ...
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1 answer
138 views

What are these controls attached to my boiler for?

If it matters, I live in Ireland. We have an oil boiler powering a two zone hot water radiator heating system and a separate electric hot water tank for tap water. Outside our house in the corner of ...
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Hot Water Baseboard Heaters

A contractor came to add an additional hot water baseboard heater into our family room which is an add-on, because there was no heating element in this added room and we could not use the space in the ...
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Rattling sound from heating pipes

I keep on hearing a rattling sound like metal banging from 1 section of pipe in my hydronic heating system, I tried bleeding but no improvement. Thanks
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What is the typical (N.American/ UK) cost difference between greenfield installation of hot water heating and warm air (HVAC) ducting? [closed]

I am in a situation now where I am having to choose between hydronic heat distribution and forced warm air heating. There are many factors to evaluate and this question is not about the plusses and ...
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What is this blue build-up on my pipes, and is it an issue?

I've looked around the intertubez, and think this MIGHT be galvanic corrosion, but there was NO sign of it when we bought our 1930's house 5 years ago. The Taco pump WAS replaced 3 years ago (that's ...