help with omron temperature controller


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I have an Omron E5KN-Q9FJ temperature controller, but I do not have a manual, and cannot find one. I would like to use this controller to cantrol a 1500 W heating element. The output type is voltage output 20mA 5VDC. How can I use this output to control the heating element? Do I need a SCR power controller, if so where can I find one and how expensive are they? Also, is there an IC that can convert the output of this controler to a drive signal for a SSR?
Finally, there are two SUB outputs, what are these? The SUB outputs have the following specs: contact output, 1 A/250VAC resistive load.