Am going to a pub/club tommorrow to look at a lennox system. I have very little information on the system other than the condensing unit model nunber - BGK070HD. It says Lennox Baltic on the condensing unit. Its a heat / cool system one outdoor and multiple indoors. The customer wants me to re programme the controller to set new on/off times. The controller is a DC 50 Comfort controller. Sorry for the limited information but this is all I have been given prior to going tommorow. Would anyone have any information on programming the various controller parameters. Dont usually on Lennox but the customer just took over the place and we do all his work. Many thanks