Question about Honeywell Programmable Thermostat Heater

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I have just installed underfloor heating with 4 zones. I also have the existing radiator system. The radiator system is currently programmed to come on and off twice a day but has no room thermostat. We intend to run the underfloor heating on a 24 hour basis but stepping the temp down at night and then back up in the morning, this has been recommended. The underfloor system is isolated by a zone valve. I have 3 rooms on the underfloor system that will probably require different temps. Can you recommend suitable room thermostats for the 3 rooms plus a new room thermostat for the radiator system. Will these be programmable or do I need seperate programmers. Thanks

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You say you have3 rooms on the underfloor system that will probably require different temps. You said you have 1 zone valve for the under floor system. You can not control all the rooms with different thermostats and only 1 zone valve. You need more information and professional help here. I can give you more advice too...

Posted on Jul 01, 2009

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I have the aube TH132 underfloor heating system installed. I have programmed the temperature set points to 18c but its over heating to 43c!! I've re programmed it but with no luck!! The icon for when...


This product has 2-year warranty against defects in workmanship.
Aube technologies Inc.
Warranty does not apply to poorly installed ...
Canada 450-358-4600

Manual does not have troubleshoot section.
section 4 includes temperature setpoints by model number.
On-line manual can be word-searched for fine details that might be missed by a visual read.
http://waterheatertimer.org/pdf/TH132-A-F-AF-230-thermostat.pdf

Check that air vents are open to control, so the unit can read correct temperature.
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The emergency heat will not turn on in my system. I also noticed the emergency heat light does not turn illuminate on the Honeywell HZ322 TrueZone Panel even if the emergency heat button is pressed. The...


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Regarding your heat pump not keeping up ...depending on what part of the country you live in, heat pumps are not the best thing to heat with. As you probably already know, once it reaches 32 degrees outside, the heat pump stops working and the electric furnace or heat strips come on to supply warm air. Frankly, when that happens, it's like turning on your kitchen toaster and blowing air across it with an electric fan. Doesn't sound to efficient does it. Plus, your electric meter is spinning like crazy and the power company is falling in love with you.

In my area (Virginia) most new home construction is now using what's called a dual fuel system. It's a heat pump, but it has a gas furnace backup for when it reaches 35 degrees outdoors. It's very, very efficient and a very comfortable heat. The gas furnace can run on either Natural Gas or Propane Gas.
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The other option is to add a vent-free gas fireplace or vent-free gas logs, if you have an existing solid fuel burning fireplace. They are great for zone heating and/or supplemental heating. Plus, if you have a power outage in the middle of the winter, they'll still work, as they don't require any electricity.

I didn't mean to run own, but I hope all this helps you solve your heating problem.
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what you have is called a hydronic heating system.
this heating system is completely isolated from your water heater I believe this as most hydronic systems I have installed circulate water through the furnace to heat the house. If this is true you need only to connect your old water heater cold water supply side to the tankless and, old hot water side to the house system: the showers/tubs/sinks etc. in your home.
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Honeywell ST6400C programmer doesn't switch off


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The wires in the unit might be crossed. (don't always assume the contractor who wired maintained the correct colors , I have a friend who blew out a heating pipe because when a replacement motor valve was installed it was never wired right and the plumber assumed the colors were correct so no overtemp shutoff created steam in PVC pipes, OPPS)
There fore maybe one is still coming on. Do you have more than one heating zone? IF so see below

I guess the main question is why manually turn it off? why not use the program.

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Investigate your wiring, reprogram, replace any battery backup.

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