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That's a DC power supply. Your Tecmar unit need a 24 volt AC power supply. You're supposed to use a common-as-dirt, run-of-the-mill 24 volt AC HVAC transformer, which are typically 40 VA in capacity (1-2/3 amps). They go for about $13 at your home supply or HVAC supply house, and they are designed for permanent installation in knockouts or as a substitute ...


3

You'll be fine with solid wire. Tstat wire is generally 18 gauge which is pretty small. Also, since you'll be going thru all the work to fish the cable (which can be a PITA), I'd go with 18/7 cable. That way, if you or the next homeowner wants to install a heat pump or A/C the cable will be in place to support that. Edit: Thanks for the contribution from ...


2

You have EITHER... supply power being split here to power other thermostats... OR... this thermostat controlling two heaters. Don't know, don't care if the thermostat doesn't. Let's convert this thing to 4 wires. A "Cable" is several "wires" inside a sheath, which you seem to grasp. We're going to label the cables A1, A2 and B (not ...


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after a few tips from @ThreePhaseEel I be able to fix the problem that I'm having. after I short the circle on a furnace and blow off the fuse. Since I'm not a AC tech so I don't know much about a ac or a heat pump. beside the unit outside that they need a furnace unit inside as well. so the problem that I'm having with out knowing that so I'm not be able to ...


2

Yes, it can be done. It just needs to be plumbed (and wired) right. Each thermostat should control a valve that admits hot water to its section of the house. The boiler should be wired to fire up whenever either thermostat is calling for heat. For example, if the basement is cold, but the rest of the house is warm, then the valve allowing water to the ...


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Simply set your thermostat to "fossil" or "gas/oil" mode Most thermostats out there support what you describe, as it turns out, as gas furnaces control their blower automatically by default, and only use the G terminal as an override to turn the blower on when the system is otherwise not running. So, simply set your thermostat of choice ...


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The answer is yes, you can. You could ask why your system isn't working that way. You could start by looking at whether it seems to generally be intended to work that way, in which case something is wrong. If your system is meant to have two zones you should see the hot water pipe that comes out of the boiler split into two pipes, and each one should ...


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I wish I could post this as a comment rather than an answer, but pictures aren't supported in comments, but here goes. This isn't a product recommendation, just an example of what might work for you. Most sophisticated thermostats have a LOT of settings for various types of heating/cooling configurations. I have in-floor hydronic heating and A/C on the ...


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Depending on your boiler, you can at least see the DHW called temperature on your boiler display. I have the Smart 30 water heater coupled with a Triangle Tube Prestige Solo boiler, and on its display, under the various info items, I can see the DHW temperature. I'm guessing that will be the closest you can get with this specific setup.


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Some power supplies have a large amount of dc ripple or don’t work with inductive loads. I am not sure about your tekmar unit it may be heavily inductive and that will cause the voltage to dive on a switching type supply, or a unit that is sensitive to the ripple. You can test the ripple if you put the meter on ac volts and measure the supply this value ...


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Looking at this again it seems like the thermostat wants 24v ac so I need a different power supply.


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Double pole heaters do not have a neutral. The white wire would be a hot also. Normally the red wire goes to the load so the black connecting to the black that would be the hot side. The white that is in the same cable as the black /black connection would be the other hot. I can’t tell if it matters on the drawing for load and line most do want the line on a ...


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