Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
General Engineering
Mechanical Engineering
Electrical Engineering
Aerospace Engineering
Nuclear Engineering
Materials Engineering
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
General Engineering
Mechanical Engineering
Electrical Engineering
Aerospace Engineering
Nuclear Engineering
Materials Engineering
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Engineering
General Engineering
How does this floor heating mixing unit work?
Reply to thread
Message
[QUOTE="CWatters, post: 5476803, member: 423469"] I have similar manifold at home although it's a slightly different design and set up. The manifold is usually controlled by a Wiring Centre. This takes electrical inputs from the room thermostats and generates outputs that control actuators on the manifold. In a small house there might be one thermostat per room each controlling one actuator feeding the loop for that room. In larger houses with big rooms one thermostat might control two or more floor loops. In most cases the wiring centre also generates a "Boiler Enable (BE)" signal that is the logical OR of all the thermostats. The BE signal is used to control the manifold pump, the Boiler and it's pump. That way if no room stats are calling for heat everything is off. This is sometimes called an Interlock. I think it's mandatory to have an interlock in some countries. On some systems there is no interlock. The boiler is either enabled 24/7 or is controlled by a time clock. What happens is that when the floor loops stop calling for heat the manifold stops taking hot water from the boiler. That causes an increase in pressure that opens an automatic bypass between the boiler flow and return. That causes the boiler return temperature to rise. If the burner is still running the flow temperature will also rise eventually causing the burner to shut off. Unfortunately there are numerous variations so it's quite difficult to be sure how your works and what that means for the flow meter. [/QUOTE]
Insert quotes…
Post reply
Forums
Engineering
General Engineering
How does this floor heating mixing unit work?
Back
Top