If attempting to make use of LI 10371 for garage demand control ventilation how should the proposed model be differentiated from baseline to take advantage of CO sensors? Is it the (i) cfm, (ii) schedule of system operation or (iii) the installed power of the garage exhaust proposed system which would be different from the baseline? Alternatively, should both models be identical and then use a simple equation as part of an ECM multiplying the installed power of the exhaust system with a differentiated schedule of operation to estimate energy use? Thank you in advance.