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I have a large wood stove with back boiler to heat 4 rads in my bungalow but it wont seem to get the water hot enough to heat the rads. the rads are not cold but are far from hot. The fire burns fine, but not hot enough it seems, any ideas?

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Make sure that the water level is full and don't forget to bleed any air out of the systen.

Posted on Nov 30, 2008

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Taps get hot water the rads dont


The Tap water comes from a Domestic water heater. The radiators are heated from a separate source, usually a boiler of some kind. Follow the piping back to that source and see if it is heating. Next, if it has a pump it should be running. Last, look for air bleed ports on each radiator and bleed out any air in them. If nothing comes out when bleeding, air or water, look around the boiler for a water valve and add water till all the radiators are full. If you need more information, write back and try to be more specific. thank you for asking. Please grade the amount of help this has covered. Thanks again. Roger

Apr 05, 2011 | Heating & Cooling

1 Answer

Does the boiler thermostat control the heat of the radiators as well as the hot water temperature? Does the thermostat control the water temperature and the pump - as our pump seems to be on all the...


There should be a control called an aquastat that regulates the temperature of the boiler. The thermostat will turn on the circulator to start the flow of water through the radiators. If the water coming back from the radiators is very cold, a control will shut off the circulator until the boiler can come up to a predetermined temperature then start the flow of water again. If you have a tankless coil for domestic hot water, you now have a triple aquastat that maintains the temperature for domestic as well as the boiler temp. So yes the boiler thermostat (aquastat) does control the heat of the radiators and domestic hot water. No the pump is regulated by your house thermostat. You should take an amp draw on the boiler and componants to find out what is drawing more electricity than it should and popping your fuse.

Feb 19, 2011 | Heating & Cooling

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My boiler heating is working but hot water is not coming. i want to know how to set hot water 24 hours 7 days


As I understand your question, you have a boiler with a 'summer/winter' hookup for domestic hot water.

Your boiler should run all the time, i.e. not be shut off by you. Your boiler provides hot water for baseboard heat in your home ... possibly through several 'zones' each controlled by an individual thermostat and circulator. Yours may be a steam system. If this is the case, you have radiators not radiant baseboard heaters and no circulators.

Your summer/winter hookup provides a constant supply of domestic hot water. It does this by taking cold water from your water main and passing it through a copper coil which sits inside your boiler and then to your hot water main in your home. Since the coil sits in the hot water at the top of the boiler, it is constantly being heated. This coil may be in a deteriorated condition in your case or it may be too small for your needs.

Several years ago, I did a small upgrade to my mid 1950's era American Standard boiler. The summer winter hookup in my case was mounted on a 4 inch cast iron boiler plug. The coil was 12 feet long (folded up to a package about 1 foot long). I was very afraid when the plumber came in with what amounted to a 10 foot long pipe wrench. My fear was I would have a pile of broken cast iron at the end of the day. All is well that ends well. He got the old one out and replaced it with a coil that consisted of 20 feet of copper tubing 3/4 inch in size (the folded tubing was about 20 inches long and fit nicely into the boiler). We now have all the hot water a household consisting of one guy and three gals would need in all but the extremest of times..

I think you r answer is here ... replace your summer/winter coil with a new, bigger coil.

Something else I did. My kitchen is 60 feet (pipe wise) from the boiler. It takes a long time to get hot water there. I put in a small electric hot water heater just under the kitchen. I put a timer on it so it runs for a couple hours in the morning and a few hours in the afternoon. The hot water line from the boiler serves as the cold water input to the heater. I now enjoy the convenience of quick hot water in the kitchen with the relatively low cost of oil heated water from the boiler as a relatively small cost of electricity.

My winter settings are 160 - 200 and my summer settings are 120 - 150 which seems adequate for our needs.

Thanks for your question at FixYa.com. I hope I have been of assistance to you today.

Feb 05, 2011 | Heating & Cooling

1 Answer

The boiler is not heating radiators and no hot water. Any ideas? Is there anyway of resetting the boiler? If so how do I do it? Thanks in advance.


when you say not heating do you mean the boiler is firing and not getting hot enough? If it is not firing at all check t-stat to make sure it is calling for heat. also check aqua stat and low water cut-off. your low water cutoff can be reset there is a small button on the side and your boiler motor has one as well just look around it can be hard to find.

Jan 24, 2011 | Heating & Cooling

1 Answer

Wood burning heater when putting wood into stove lots of smoke comes into the house when door is opened.


It ain't drafting right or you have the damper closed. Look for obstructions in the smoke stack.
Wood burning tips
  • Burn only wood. No garbage, plastics, rubber, paint or oil, briquettes, paper, etc. Burning these items releases harmful chemicals into the air.
  • Burn Wise Program from EPA: Emphasizes the importance of burning the right wood.
  • Build small, hot fires instead of large, smoldering ones.
  • Don't "bed the fire down" for the night. Holding a fire overnight is a fire hazard and can create serious indoor and outdoor air pollution problems.
  • Open your damper if the smoke is dark. Dark smoke indicates more pollution is being produced and fuel is being wasted.
  • Keep your stove clean and well-maintained. Follow manufacturer guidelines; replace catalytic stove filters every 1-4 years. Have your chimney checked and cleaned at least once a year.
Use seasoned wood The best fuel for woodstoves is dry, "seasoned" wood. Seasoned wood has a moisture content of about 20% or less. It tends to be dark in color, cracked on the ends, light in weight and has bark that is easily broken or peeled. Here are some tips for preparing seasoned wood:
  • Split the wood to help it dry. Wood will dry out more quickly and burn best if the wood is cut to about 3 1/2 inches to 6 inches in diameter.
  • Cover the split firewood to protect it from the weather and stack it loosely in alternating layers, at least 6 inches off the ground.
  • Time must be given to allow the wood to reach 20% or less moisture required for seasoned wood. This process takes approximately 6-12 months. Think ahead and buy next winter's wood well in advance.
It is recommended an annual chimney cleaning to remove creosote build up and to identify potential problems. Things to consider:
  • The Chimney cap may be plugged by debris.
  • Catalytic combustor and baffles are exposed to very high heat and deteriorate as used. Replace every 1-4 years depending on use.
  • Stovepipe angles and bolts are subject to corrosion.
  • Gaskets on airtight stove doors need replacement every few years. Gaskets and seals are used by the appliance designer to control the location and flow of air into the appliance.
  • Check seams on stoves sealed with furnace cement. Seams may leak and cause you to loose valuable heat and reduce the efficiency of the unit.
  • Replace broken or missing firebricks.
  • Keep the floor of your stove clean of debris and ash.
-from the web

Nov 02, 2010 | Heating & Cooling

1 Answer

I have just moved one radiator in my bungalow from one wall to an adjacent wall. I used the same flow and return pipework I only had to shorten it. I turned the water off and drained the rad and vertical...


When you reinstalled the radiator did you install a purge vent on it? If not, then there is a good chance that the radiator is air bound, and therefore will not fill.
If you have a loop system, without venturi tee's then you should be able to purge the system at the boiler by building pressure to around 25 psi, then releasing through the bleed valve.
If you have venturi tees then i would suggest installing a bleeder valve at the radiator.
As a note of precaution, and no offense, but ensure that you connected the baseboard to the correct sides of radiator. This could be the cause of many a headache. Hope this helps

Aug 10, 2010 | Heating & Cooling

1 Answer

Clock on comi boiler


it may be the preheat setting on the boiler for the hot water circuit. do the radiators get hot when the boiler fires up with the time clock off ? if not then there is nothing to worry about if it is only on for a short time.

Jan 04, 2009 | Heating & Cooling

1 Answer

Vaillant Ecotec combi boiler - radiators working but no hot water flow to taps


David,

The fact that you're getting a little burst of domestic hot water suggests that the boiler is capable of circulating hot primary loop water through the heat exchanger, but doesn't necessarily do so when it needs to.

What seems to be lacking is a recognition that domestic hot water is now being drawn off, and that the boiler needs to fire up and divert the primary flow through the heat exchanger.

A good place to start might be the flow switch (usually in the bottom of the boiler, where the cold water supply comes in) or the electrical connections to it.

A.

Oct 05, 2008 | Heating & Cooling

1 Answer

Have an oil fired boiler for baseboard heat and it also has a tankless heater for domestic hot water. No heat being called for only getting hot water for use. Boiler goes to 210 degrees before it knocks...


These boilers usually have multiple controls. The control that would take it out of the circuit at 210 degrees is a safety.

You should definitely have a professional take a look at this unit before you continue using it.

Sep 18, 2008 | Heating & Cooling

2 Answers

I have a vitodens 100-w combi boiler and tried to turn the heating on just to give it a working as was advised. However, I have no heat coming to my radiators. The boilers seems to be working as my hot...


Here's the deal: If your Vitodens 100 has outdoor temperature sensing capability, either built in or via external aftermarket control such as Tekmar or other, and the temperature outside is above warm weather shut down (WWSD), then the boiler will not operate for space heating, but will operate to make Domestic Hot Water (DHW) only. Generally speaking WWSD is facoty set at 20*C, since this is normal room temperature so the boiler will not need to operate at temperatures above this number as it is warm enough outdoors to heat the house to comfortable levels.
If your Vitodens 100 does not have outdoor temperature sensing capability then you should check to see if your room thermostats are operational and calling for heat since the boiler is only responding to this on-off control based on room temperature. (turn up your room thermostats)
In both cases you need to make sure that your heating system's distribution pump and zone valves are operating correctly.
In any case you should be calling a heating contractor if you suspect that there is a problem with your boiler and/or heating system.
Good luck.

Aug 07, 2008 | Heating & Cooling

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