Can you provide a sketch (and if possible a photo of a similar layout) of the piping if I omit the Indirect Water Heater as shown in the attached image taken from page 11 of the Burnham Series 2 installation manual? I will be using the Caleffi NA553362 Boiler Trim Kit w/ AutoFill & Backflow & 1" Threaded Air Separator & 4.4 Gal. Expansion Tank.