Hi all,
I rewired an Unisab II yesterday, it had two 4-20mA signals in, one in 33, 34 and one in 47, 48 i believe.
I needed to control the set point on the water, that worked well in 47, 48.
What is the other input for?
It was setup for weather compensation, but I changed that to external setpoint. The input in 47, 48 was a temp transducer in the pipe up the building. There are two chillers and a buffer tank.

Does anybody have a manual and a wiring diagram on the unisab II?

Regards,
Peter