Danfoss Bypass

[trehugr]

Im planning improvements for the 2009-2010 season. One of those upgrades is piping in a bypass to the Danfoss valve, so if we leave in the winter, and the EKO turns on the pump at 40º, I won't have to remove the thermostat. Does anyone have a thought on this ?

 

[Medman]

I installed this bypass when I set up my system. It works great when you are away for extended periods. The first time I was out of town, I let the boiler cool, opened the bypass and left. However, it stayed warm enough in the boiler room that the controller did not kick on the pump. When I got home I had to deal with two spots where the loop had frozen - where it exits the garage, between the wall and ground, and where it enters the house. Next trip, I let the boiler cool, opened the bypass, and turned on the pump with the manual switch I installed. The water circulated in the loop the whole week we were gone with no problems. Temp in the loop was 55* when I got home. It took about 2 hours to be back at 175*. Just don't forget to close the bypass when you return!

 

[taxidermist]

Im planning improvements for the 2009-2010 season. One of those upgrades is piping in a bypass to the Danfoss valve, so if we leave in the winter, and the EKO turns on the pump at 40º, I won't have to remove the thermostat. Does anyone have a thought on this ?

Yep I did this you can see a pic of it in my blog.

Rob