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I have a radiant floor heating system with a wirsbo control system, i keep having to reset the system to get the zones to heat up again. The broiler is working fine. The first time I reset the radiant heat stayed on for 3 days and this morning it was off and had to reset it again for the zones to kick on again. I am new to all this and want to know where to start before calling someone and having to pay mega money if it is something simple!! Thanks

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Is this a water circulating system? If so there are bleeder ports on your radiant heating zones on the floor that you can bleed the air out of the system. They look like a tire air pressure valve. Depress the valve core with a small screwdriver or something of the same nature. You will hear air coming out and water will come out. This is done while system is running. Also it may maybe under pressurized, circulating pump could be shutting down. Does the boiler keep running or shut down on reset. If it does could be within the boiler itself. Please rsvp with more info.

Posted on Oct 03, 2008

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Posted on Jan 02, 2017

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We have radiant floor heating system ran with /wirsbo valves. One zone is not working..not heating at all. The valve seems to open up when thermostat is turned on but not heating room. Any suggestions?


Are you able to isolate the Zone?
If you are able to isolate the Zone, is there anyway you can bleed air out of the system?

1) turn off the other zones and see if this one starts to heat up,
if not. Try to bleed Air out of the main header until it gets warm. If this does not work, do you have to manually add water or is it an auto fill system? Make sure that is working or manually add water.

Oct 30, 2013 | Uponor Wirsbo A3010526 Thermal Zone Valve...

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How to Install Radiant Heat


Over the past twenty years plus,radiant heating has come to be a very acceptable way of heating. I have watched this heating become more and more popular every year. I also have seen many jobs where people do it all wrong and then wonder and get upset because this latest and greatest "state of the art" heating system does not perform properly or save them any money.

Radiant heating is best known for the fact that it is one of the most comfortable heating systems. The next best thing about radiant heating is the efficiency that it provides. Unfortunately there are way too many systems that are installed without efficiency in mind. They really do not peform any better than any other hot water heating system. This deprives the homeowner of one of the most important benefits of a radiant heating system.

The biggest mistake that people make is that they think they can install a radiant heating system for the same amount of money as any other hot water heating system. Nothing could be farther from the truth. If anyone ever tells you that they can do that run as far and as fast away from them as you can! A properly installed radiant heat system will cost you more money! The benefits will offset that, but you must spend the money upfront. Also, just installing a high efficiency boiler does not give you a high efficiency heating system. A great heating system involves much more than just a high efficiency boiler!

To have a radiant heating system that will perform efficiently you have to install radiant heat plates under your tubing, install the radiant tubing in a gypcrete or concrete pour, or install your tubing in a specially prepared sub floor. These methods will allow you to heat your home or building with very low temperature water. Low temperature water is whre you get your high efficiency. If you have to turn up the temperature of the water to get the heat out of the pipes and into the room you are then fighting a losing battle.

So, if you are considering a radiant heating system there really are only three considerations for you. Good quality radiant heat plates that attach to the sub floor with a reflective insulation under them to give the radiant heat the signal to go up. Pouring the radiant tubing into the concrete of a basement floor, or gypcrete (light weight concrete), over the sub floor of upper floors. In either instance make sure that you use a good quality insulation under the floor. Insulation for radiant systems is another topic that I will have to cover in a future article. Thirdly, there are products made that are specifically made to be incorporated into the sub floor that accept the radiant tubing. Grooves are cut into the sub floor and the tubing is inserted into the grooves. Usually these products will have a type of plate and insulation incorporated into the product.

A radiant heating system can be one of the very best types of heat you can have if it is installed correctly! A correctly installed system will give you many years of dependable service with the lowest possible operating cost. It will be nearly maintenance free and trouble free, giving you many years of comfort, with no worry or fuss.

When you are looking to buy a radiant heating system look around for the company that will give you one of these options. Not just be trying to get you to buy on price. If they are cutting price to get you to buy, the chances are that they are also cutting their quality to get to that price. That will never give you the best deal when it comes to a radiant heating system.


on Dec 29, 2009 | Heating & Cooling

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Radiant Electric Floor Heating does not Save Money


There are many great selling points for electric under floor heating. The radiant design of the electric heating system is a great idea. It is easy to install which is very appealing.. You will be warm and feel great on nice warm floors. There are so many things to like about this type of heat. So what is the drawback to it?

One of the latest fads in under floor or radiant electric heating is the continued development of electric radiant heating. This heating comes in many different forms and can be installed easily and at what seems to be a reasonable cost. However before you get stuck with a heating system in your home or business make sure that you take a good look at what it will cost you to heat with electric.

Electricity will only ever make 3,415 BTU’s of heat from one kilowatt of electric. This is something that cannot be changed. No matter what you do to electricity it will always produce the same BTU’s per KW. So for this reason you can change the effect of the heat coming from the electric, but you can’t change the fact that you still need a certain number of BTU’s from the electric to feel warm. These BTU’s cost money. Oh and did I mention that of the electricity that is produce by most power plants, only about 1/3 of the electric makes to your home? This fact alone should make you not want to use more electric.

The price that the electric will cost you is the problem. There is nothing efficient about electric heating. Electric is expensive now and it will be going higher as more states deregulate electricity. Now electric radiant heat is probably the best way to heat with electric because of the radiant feature you will be able to “feel” warm at lower air temperatures. That will save you money. However the cost of the electricity to get the heat to that point will still have you wondering why you ever installed that system.

Under floor radiant electric heating is a very good heat and there are ways such as hydronic heating systems that use warm water to make your floor nice and warm. Today’s high efficiency boilers will give you a nice heat from LP gas or natural gas at near 100% efficiency. If you are looking to heat a very large space with radiant heat make sure that you compare all of the ways to produce radiant heat.

If you do decide to go with electric under floor heating then here are a few suggestions. Insulate your house like you were living on the moon with the ultimate in temperature extremes. The money you will spend on extra insulation will pay back many tomes over if you use electric to heat with. Use electric if you are only using the house for seasonal use and you want a heating system that is easy to maintain. Another good way to use it is if you only want radiant floor heating for a small part of your house like the bathroom.

on Dec 25, 2009 | Heating & Cooling

1 Answer

What is Radiant Floor Heating System anyone can tell me?


I think the concept behind the Radiant Floor Heating System is that Installed tubes or heating element, which contains water beneath the floor, which warm our floor. For more information about Radiant Floor system you can check this site.http://www.ps2i.biz/

May 28, 2013 | Mountain Plumbing Plumbing

1 Answer

I've noticed two problems with my heating system, but not sure if they are related. Here's the background - sorry for being so long winded. Background: I have a Weil-Mclain Gold CGi Series 2 (which was...


Two problems, one is a bad thermostat on zone 2. The second is the boiler. The inducer fan energizes causing a pressure switch to engage. This pressure switch energizes the ignitor. If the ignitor does not get hot enough, it will cycle again all over. The cheapest route to take is to check all hoses going from fan housing to pressure switch looking for bad connections or leaks, the second thing to do is to replace your ignitor (time for it anyway).

Jan 05, 2010 | Heating & Cooling

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Radiant Heating - Why do You Feel Warm? The Best Most Efficient Heating System


What makes you feel warm on a sunny day in the summer? Radiant heating or radiant energy is usually recognized as the oldest form of heating. It provides the best comfort and is the basis for all types of heating systems. Radiant heating is "radiant energy" being emitted from any heat source. Radiant heating is the effect you feel when you can feel the warmth of the sun or a hot stove top element from across the room.

Radiant heat is widely known as the most comfortable and efficient heating method you can find. Some of the advantages of radiant heating are: it is usually more efficient than baseboard heating and almost always more efficient than forced-air heating because no energy is lost through ducts and other transfers. This technology can be used for both heating indoor and outdoor areas. These heating systems work by supplying heat directly to the floor, to panels in the wall or to the ceiling of a house. Because the radiant heating will make you feel warmer when you are in a room, you can have the thermostat at a lower temperature and still feel warm.

The feeling of warmth is the absence of heat being pulled from your body. If the walls, floors, and ceilings around you are warm then they are not pulling heat from your body. Then you feel warm. Your body is not giving up heat to them.

Because of this radiant heating systems can provide massive energy savings of more than 10-30% in most residences, and sometimes up to 60% in shops, hangars and warehouses. Radiant heating provides even warmth with no cold spots within a room. That provides a comfortable environment that cannot be matched by any other type of heating system.

New radiant systems are currently designed to run cooler than they did in the past. The water supplied to the systems will generally range from 90 to 140 degrees. Remember radiant heat can travel in any direction and is unaffected by gravity. Radiant heating systems will allow you to be more comfortable at a lower thermostat setting. Radiant heat will warm the closest and coldest mass, which then radiate heat throughout the space evenly. Radiant heating will give you the most consistent room temperatures from floor to ceiling when you compare it to any other heating system.

on Dec 12, 2009 | Heating & Cooling

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Condensing Gas Boilers - The Best Radiant Heat Boiler


The right condensing gas boiler coupled with the right heat transfer system to get the heat into your home the right way will give you the most efficient heating system possible with today’s technologies. There are a few things that need to be taken into consideration for this combination to work well and serve you well.

For this type of heating system to work you first need to have a radiant heat system that will supply enough BTU’s to your home at very low water temperatures. By low I mean under 100F. To get the output that you need at this low a temperature you of ten will need to design the radiant heat system with heat transfer plates. The heat transfer plates will make the transfer of the heat from the tubing that the water flows in to the floor as efficient as possible. Getting the floor warm enough to heat your house with low water temperatures should be the goal.

Now that you have a great heat transfer system you can set up your boiler to run at very low temperatures also. Most of today’s condensing boilers use out door reset technology to assist in keeping the water temperature just high enough to help the heat transfer plates produce just enough heat to keep you warm. On the coldest day of the year you want your water temperature to be no more than 100F and still be keeping your house to the temperature that you want it to be.

A great high efficiency heating system coupled with a good high quality condensing gas boiler will give the best in comfort, quiet heating at the lowest cost possible. Sure this type of system will have a bit higher upfront cost. And the contractor that you hire to install this type of heating system may require a higher rate to perform the work, But once you experience the comfort and efficiency of a top notch heating system like this you will soon forget the money and enjoy your nice warm comfortable home.

on Dec 06, 2009 | Heating & Cooling

2 Answers

Honeywell T8400B Thermostat Display Intermittently Blank


most likely a bad tstat i would replace I recommend honeywell focus pro 6000

Jan 29, 2009 | Heating & Cooling

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Underfloor Radiant Heating works great with a Geothermal Heat Pump


Radiant floor heating has been the standard for comfort and efficiency for many years. The feeling of having a warm floor under your bare feet is priceless. Rolling on the floor while playing with your children or grandchildren is great when it is cold outside and the floor is pleasantly warm.

Geothermal Heat Pumps usually are associated with hot air heating and air conditioning systems. If you live in a climate that very seldom needs air conditioning, then you need to concentrate more on the heating. There is a super way to use geothermal technology to give you very efficient and comfortable heating. Underfloor radiant heating can very easily be incorporated with a geothermal heat pump to give you the best of both comfort and efficiency.

Here are some thing’s that you do have to consider before deciding on a system like this.
You will need to drill a few wells to extract the heat from the ground.
Piping must be installed in the wells correctly for the system to work properly.
You will need a heat pump designed for hot water heating.
You can not use a heat pump that is designed for hot air use and convert it for radiant heating.
The radiant heat design must be designed to use water temperatures that are cooler than that of many radiant heat systems.
The maximum temperature design should be 130 degrees F.
To get this kind of design to work correctly for you, you will need to use good quality heat plates and insulated under the heat plates.
By following these guidelines I have designed a number of radiant heating systems that have proven to heat houses very comfortably at temperatures well below zero.

If you decide on installing this type of system make sure that your installer knows exactly what they are doing. This type of system requires many things to be done exactly right, so that the water flows will allow the system to work correctly. The piping on the well side is extremely critical so that it uses all the wells equally. On the house side the piped using a primary/secondary piping scheme. Pumps and pipe sizes need to be able to give you very high flow rates so that the temperature drop is kept to ten degrees or less. When working with these low temperatures the piping and pumping becomes so much more critical.

By using these principles you can combine two very great heating types and can have a very good heating system that will perform very well for many years. The main drawback with this type of system is that you do not have the ability to get much cooling from this system. This is probably the only drawback of this type of system. It would be wondeful if there was a geothermal unit that was heating only. The elimination of the reversing valve would be a great cost savings and a plus overall. This system is best suited for cooler climates that require little or no air conditioning.

on Dec 05, 2009 | Heating & Cooling

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Geothermal Heat Pumps And Radiant Heating - An Absolutely Fabulous Combination


Geothermal Heat Pumps are usually associated with hot air heating and air conditioning. In climates that very seldom need air conditioning you need to concentrate more on heating. There is a very good way to use geothermal technology for very efficient and comfortable heating. Radiant floor heating can very easily be combined with a geothermal heat pump to give both comfort and efficiency.

Radiant floor heating has been the comfort and efficiency standard for many years. The feeling of a warm floor under your feet is priceless. Romping on the floor while playing with the children is great when the snow is blowing and the floor is pleasantly warm.

Geothermal heating has also been known for it's efficiency also. The drawback to hot air geothermal heating has been the air temperatures that are cooler than normal hot air heating systems. By combining the two types of systems you can have very comfortable heat and efficiency at the same time.

There are something’s that you do have to take into consideration before deciding on a system like this.
You will have to drill a few wells to extract the heat from the ground. The piping must be installing in the wells correctly for the system to work properly. The heat pump needs to be designed for hot water heating. You can not use a heat pump designed for hot air use and make it work for radiant heating. The radiant heat design must be figured to use water temperatures that are cooler than many radiant heat systems. A maximum temperature design should be 130 degrees F. To get this kind of design to work correctly you will have to use good quality heat plates and insulated under the heat plates. By following these guidelines I have designed systems that have heated houses very comfortably at temperatures well below zero.

If you decide to install this type of system make sure that the installer knows exactly what they are doing. This type of system requires many things to be done exactly right so that the water flows will allow the system to work correctly. The piping on the well side is very critical that it uses all the wells equally. On the house side the piping must be primary/secondary. Pumps and pipe sizes must be able to give very high flow rates so that temperature drop is kept to ten degrees or less. When working with such low temperature the piping and pumping becomes so much more critical.

By using these principles to combine two very great heating types you can have a very good heating system that perform very well for many years. The only other factor with this type of system is that you don not have the ability to get cooling from the system. That is probably the only drawback of this type of system. It would be great if there was a geothermal unit made that was heating only. The elimination of the reversing valve would be a cost savings and a plus overall. This system is best suited for cooler climates that require little or no air conditioning.

on Dec 04, 2009 | Heating & Cooling

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