S.C. Code Ann. § 40-82-300 – Safety cut-off valves on certain heating appliances

(A) A heating appliance installed for use in a hotel, motel, tourist home, school, church, theater, auditorium, institutional building, hospital, nursing home, convalescent home, or other place of public assembly or rest must be equipped with a pilot having a one hundred percent safety cut-off valve of an automatic operating type. The pilot safety valve must have positive control of the flow of gas to the appliance burners in public places for sleeping purposes.
(B) A vented space heater equipped with a one hundred percent safety cut-off valve or an unvented space heater factory equipped with an oxygen depletion sensor pilot may be installed in sleeping quarters or bathrooms of residences and in areas of a manufactured home other than sleeping quarters or bathrooms:
1. (1) a vented space heater is vented to the outside in accordance with manufacturer's instructions;
2. (2) the aggregate input BTU rating of the appliance does not exceed twenty BTU's per hour per cubic foot of space in the room where the heater is placed;
3. (3) the required clearances are maintained; and
4. (4) the heater is securely anchored to the wall or floor.