94. A thermostat that can be used to simultaneously control heating and cooling systems shall have a difference of at least 1.5 ºC between the activating temperature of the cooling cycle and the shut-off temperature of the heating cycle.
O.C. 89-83, s. 94; Erratum, 1985 G.O. 2, 3709; O.C. 1211-92, s. 14.