Ques. on Buderus 2107 Prim/Sec design

Rick Price

I have a system to install using Buderus 2107 control. Normaly, I use Taco/Tekmar controls - but this owner is looking for a top to bottom Buderus system. My questions are: How to control the primary pump (off the Taco circ. relay end switch??) and if I do switch on the primary circ. this way will it cause the 2107 to go nuts. I know there is a constant circ zone available on the control, normaly controlled by a Room sensor - but I don't think this would be effective for the primary cicuit. Anyone tried a similar setup with the 2107 ??

Frank_3

The Buderus web site has a PDF file of application notes which show how to set up the 2107 with various designs and external controls. Go to http://www.buderus.net and click on the "Literature" topic on the left. Then look for the "Applications Manual Ecomatic and Logomatic Controls".

I suggest you download and print the document rather than viewing it directly in your browser.

Ken Wickre_6

Terminals 61 & 63

Terminals 61(N) and 63(H) are 120-vac powered outputs for space heating pump(s). I understand this power is interrupted only for DHW priority, condensate protection, or WWSD. With this power source, you can start or interrup the primary pump through end switches and a pump relay. The 2107 Logomatic control will maintain boiler temperature based on a selected heating curve. This is the best I can offer without knowing more about your system. Hope this helps. Ken

Rick Price

thanks guys....

the answers were right in front of me ... but they say that's the best place to hide things!:-)