E-1.1, r. 1 - Regulation respecting energy conservation in new buildings

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104. Any heating and cooling system shall be designed so that concurrent operation of independent systems serving the same space is minimized by one of the following means:
(1)  sequential temperature control for both heating and cooling in each temperature controlled zone;
(2)  limitation of heating energy input by automatic resetting of the energy input rate to the minimum value required to balance heat losses due to the transmission and infiltration of air and the ventilation of such space.
O.C. 89-83, s. 104.