primary/secondary piping

John G

We have a radiant project with 4 zones.all zones total apprx. 25,000 ft/ of pex. we want to install 3 dunkirk 200k 90+ boilers in a primary/secondary piping scheme,looking for a diagram on piping or recommendations where we can view the correct piping scheme. and a place to find the pump sizing for boilers and loops. each zone is different lengths,two are apprx. 5k one is 8k and last is 6500 apprx. A Tekmar boiler controller is going to be used. There will be no indirect w/h.Any other piping ideas are welcome.

John G

Primary/Secondary piping need help!

need help on designing a primary/secondary piping scheme for (3) Dunkirk boilers 90+ for a radiant heat project, we want to pipe all 3 together and run 4 seperate zones, we have another thread on this posted 8/22 also, there will be no indirect hot water utilized.

S Davis

Sizing

Was there a heatloss done and what kind of flow rates are you looking at?

S Davis


Apex Radiant Heating

John G

525k is the heat loss, flow rates are in the office, i can give those tomorrow, thanks for your reply. John

Floyd_5

We still need more info...

How many loops for each zone, heat loss, max. individual loop length, etc... anything else you can think of.
Here are some pics of a job I did last fall they might be worth more words than I could ever post here.

Floyd

dconnors

Primary/secondary piping

check out www.buderus.net. we not only have the boilers but the diagrams as well.

DanHolohan

Consider

investing $20. When you have it in your head, you own it.

Primary Secondary Pumping Made Easy!