I have a DT 400CEN installed by the builder approx 10 years ago. He is now out of business.. I want to install a blowe kit (200 series) but the outlet box lower right corner has a red wire connected on the hot side of the plug and nothing in the left. I can see a black bare wire lying in bottom of same box. Your manual circuit diagram is incomplete and does not show incoming power connection to the millivolt control. Can you email me a complete circuit diagram or a link to this data.