guarddog RD-24E

heatingdpeng

this guarddog RD-24E come with boiler Weil Mcclain CGA-5. there are 4 wire, 2 yellow, one red and one white for 24 v power connection, Since I am not using zone valve, do not need extra external 24 v transformer, can I connect this guarddog RD-24E to the inside boiler control 24 v transformer? the Weil Mcclain CGA-5 using model 1135-605 ( or 381-330-010-6) controller.

Zman

Is it an RB-24E?
http://documentlibrary.xylemappliedwater.com/wp-content/blogs.dir/22/files/2012/07/MM-228M.pdf
It looks like option 1 would be appropriate for your installation.
It only draws 2.5 Va.

heatingdpeng

yes, you are right, RB-24E, sorry my mistake. Would you please point me how do I connect to that 24 V transformer on the controller, picture enclosed. My plumber said he did not know how to connect all the control. On the controller right hand corner, come in L1 and L2 (120v), right below is 4 pins transformer connection, is that blue and yellow line is transformer R and C ? Is there other place on the controller board I can plug the RB-24E in which is 24 V ?

thanks

heatingdpeng

Here is the picture