3

From Radiant Engineering, thanks for discussing our ThermoFin U product. The preferred method is to install the plates with the fins down. For a ThermoFin U installation on concrete, you would build a surface to be able to screw the plates into by first putting down a layer of Atlas Rboard®, recommended 1/2", which you should be able to get from your local ...


2

Choice of normally open or normally closed for a valve actuator is part of the overall controls design process, part of which is considering safety/protective functions. As an example, consider a climate where it gets freezing cold (below 0 degrees C). You have a normally closed heating valve that is closed. Something happens such that your electronic ...


2

assuming you are going to put a finished floor over top of all of this, you are going to have to add another layer on top of the radiators to subfloor it. this is going to add another 1/2" or so, 5/8" really. so your total floor height is going to be 1.625" or so, before you put your flooring on. you could easily pour a concrete floor at this thickness if ...


1

Stupid me. The fan has a delay of a few minutes after the thermostat calls for heat. I set it to gas and called for heat and waited 10 or so minutes and the fan came on.


1

That is actually a very good system you are proposing. My only reservation is that the cost will be excessive for only 2 apartments or zones. This is a new twist for me on a primary/secondary piping system. I have installed them before but this device makes it so much easier.The amount of elbows and other fittings should not be a problem as long as the total ...


1

The water that is being vented or bled out when you open the vent could be coming up either the supply or the return line. You could freeze one line and not the other. Is the circulating pump for the boiler running?


1

So, there are no service valves on your radiators? If you have service valves and you close one then all flow would stop in a loop.The parallel setup would still work on the other floors. If there are no service valves you would have to break loose a union somewhere in the system remove ½ the union toward the supply and cap the pipe and then turn the ...


1

I have used these N/O valves on a system that had a wood/coal boiler as a back up heating system so if properly piped could be used during periods of "power outages" to yield gravity flow and give some heat to the residence.


1

This comment pertains specifically to Taco valves, it may or may not be true of other valves intended for geothermal applications. Not all geo systems are open loop. [The geothermal valve] is made from materials that can resist oxygen corrosion more effectively than those in a Zone Sentry valve. Zone Sentry valves are designed for use in closed-loop ...


1

There may be other differences as well but the geothermal valve is designed for a higher head pressure. The standard hydronic system is built around reduced pressure. The geothermal valve is expected to deal with standard water pumping and or city pressure.


1

A lot of radiators on hot water heat systems, if not, should have what is called a coin vent. These are located at the high points of each radiator. If you do not have these, you need to have them installed. Otherwise you will not remove all the air in the lines and will always have noise in your piping and it will cut down on the efficiency of the unit.


1

Heat pump + hydronics is a fantastic combo, provided you can get an air handler that supports it While you are correct that the combination of a heat pump with hydronic backup heat is uncommon, it is not bad by any stretch of the imagination -- when an efficient boiler is used, it will beat a forced-air "dual fuel" setup any day of the week when it comes to ...


1

Better idea: flip things on their head You need hot water to run a hydronic heating coil efficiently, far hotter than you'd ever set your water heater to (water heaters struggle to reach 180°F which is the standard temp a hydronic boiler is set to). However, your hydronic load probably pales in comparision to your domestic hot water load most of the ...


1

You can mix a kick-space heater with cast iron radiators in the same zone but it is not recommended. My choice would be a "Beacon Morris". It comes in 3 models (sizes), and It has a built in thermostat that allows the fan to run when the water temperature is above 110 degrees F. The best installation would be with a monoflo tee on both the supply and return ...


1

Do you have an automatic fill valve? Is there a manual valve in line with it? Try closing the manual valve if there is one. If that solves your problem, adjust and/or replace the automatic fill valve. If you have a (domestic/potable) hot water coil, that could be leaking into the boiler, too. Shut off the domestic hot water supply on the cold side of the ...


1

It is better to keep a hot water hydronic heating system full of water all the time. This keeps air out, and prevents the inside of the radiators from rusting (assuming these are traditional cast iron rads). Recirculating the same water also helps limit the introduction of minerals from your water supply, so your rads and boiler won't clog up with mineral ...


1

For those who are interested in doing this:, I simplified the wiring diagram as illustrated below. I cut the 120v lead to the circulator relay and wired it to a terminal block. From that terminal block, leads go to to one pole of a 3-way switch and to the relay. Likewise, the other side of the relay was cut and now goes to the other pole of the switch. ...


Only top voted, non community-wiki answers of a minimum length are eligible