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+-- Forum: Products (https://www.comfortforums.com/forum-3.html)
+--- Forum: UCMs (https://www.comfortforums.com/forum-146.html)
+--- Thread: Connecting UCM05 to a rev E mainboard (/thread-1165.html)
- Guest - 09-10-2008
I have just received my brand new UCM05, and the instructions tell me to connect to J15. Unfortunately this doesn\'t exist on my board!
Do I need to connect to KA, KB, 12v and Gnd as the older UCM was? (i.e. cut off the mainboard connector and use the bared wires)
- slychiu - 09-10-2008
Comfort I has a similar 4 way connector, not called J15 (cannot remember what it is) except if it is a really old version
Anyway you dont need to cut any wires. The UCM has terminal blocks for 12V COM, KA, KB you can connect to Comfort terminals
- Guest - 09-11-2008
Are you saying it is better to use the separate connector blocks on the UCM (JP4 & JP3) going directly to their equivalents on the old manboard, rather than using JP2 or JP2A?
- slychiu - 09-11-2008
Electrically it is the same
The JP2 connection with the 4 core cable is more for convenience, (but not if you dont have the connector on the main board). Using the terminal blocks gives a more secure connection as it is screw tightened
- Guest - 09-11-2008
Brilliant, many thanks for the quick reply!