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I have a Honneywell Triple Aquasatat Relay insstalled on by boiler that heats both the baseboard and hot water for my residence. The relay is set so that the low kicks on at 180 degrees and the high kicks off at 195 degrees. I have two questions: First when the low kicks on the temperture guage on the boiler continues to go down to about 175 and when the boiler kicks off at 195 the tempurture continues to creap to about 215. Is my system ok (note that the actual reading on the Relay shows my low at 180 and my high at 190. My hot water is not hot for long during winter operation, how high can I go considering the creap of about 15 degrees after kick off.

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The temperatures you mention are reacting in a normal manor. The drop in temperature after it first starts comes from the water being brought back to the boiler from the system. The rise in temperature comes from the residual heat in the chamber after the burner shuts off. I would not push the limits on these settings. Water from the boiler is mainly meant as an assist . You did not answer if you have another hat water heater.

Posted on May 01, 2008

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Altech thermostat rf


In order to heat whatever medium it heats. Example, if the system is hot water, that hot water will cool below the boiler's internal thermostat set point after it's circulated throughout the house and returns to the boiler. To continue maintaining the preset internal temperature of the water, the boiler has to come on. This is normal operation, nothing to worry about.

Nov 13, 2013 | Air Conditioners

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I have a Weil mcLain Gold gas furnace and the Amtrol WH-7L hot water maker. I heat alot with an indoor woodstove and if the furnace is not being used I cannot get any hot water. However, when the furnace...


You should download & review the manual for Amtrol Boilermate products here.

Page 12 of the manual begins examples of wiring between the Boilermate and aquastat (also gas valve and multi-zone relay), that is usually mounted on the boiler. In order to use it correctly, you'll need to determine which aquastat (or other device) your furnace has. You should be able to locate this info on the inside of the aquastat cover. The Honeywell Triple Acting aquastat is very common and looks like this:

11_29_2012_7_17_38_pm.jpg
The cover is held by a single screw on the top, bottom or front (depending on the model you have). The inside should have wiring information along with the model number. Compare the model number with the wiring diagram for it in the Boilermate manual.

Make sure power is OFF before continuing.

Check that all wires are terminated and undamaged. Make sure terminal screws are not loose. Tighten any found to be loose.

The orange wires are connected to a switch that is normally OPEN but CLOSES to start the boiler when the hot water has cooled. It is also used to operate a "power vent" for a minute or two both before ignition and after flame out for safe pre and post purging of the combustion chamber of furnaces that lack a chimney.

Blue wires are connected to a switch that is also normally OPEN but CLOSES to start the boiler when the hot water has cooled. When the switch connected to these wires is CLOSED, ignition happens instantly. There is no delay for purge so when these wires are used to start a furnace, it should be one with a chimney - not a power vent.

For additional help with your particular installation, you will need to provide information concerning the wiring diagram in the manual that applies. Otherwise, there are simply too many variations to walk through.

I suspect that the switch(es) that are connected to the orange (or blue) wires - or the device (aquastat or multi-zone relay box) is not operating as expected to start the furnace.

The troubleshooting section of the manual that seems to apply best is the section: Boiler will not operate when calling for hot water on page 27 (if you want to try some of their suggestions while waiting for additional replies).

I hope this helps..

Nov 29, 2012 | Air Conditioners

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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 | Air Conditioners

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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.

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1 Answer

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on the round its r g w hook that on the new stat if your using it for heat to then the rh and w are heat controlling baseboard or a boiler relay? the new stat has a jumper wire remove that it is hooked up to rh and rc un plug every thing good luck Tom

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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...


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

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