dry contact input module

[Ashraf]

i have one dry contact input module, one 220 V relay and 3 indoor AC with ir connection. the power is connected with 220v relay and dry contact input module is connected with relay output...And dry contact input is connected with controller contact.

 

how do i give a ON signal command by using dry contact input module? What is the programming process? 

Advanced in thanks

[Matt Lowe]

depends on the equipment. need to find out what voltage input it needs and if its too much to go through the controller youll need another relay to handle that switch and have c4 switch the middle relay.