I am changing out an old lennox RTU next week. The existing system is controlled by actuators closing off flow to offices on cooling setpoint on main floor and second. The system is controlled by a A419 set to 70 in supply duct, blower runs all the time, in series with heat/cool switch, low ambient stat, air switch and time clock(for night setback). Is there a control that I can run that runs off supply temp with probe, but can auto change from cooling to heating year round to maintain same temp instead of old system which is one or the other. I would need Y1,Y2,W1,W2,R and G on control to rtu. This way I could eliminate all the other controls.