7.2.10.7.Water Temperature Control (See Note A-7.2.10.7.)

(1) Except as provided in Sentences (2) and (3), water supplied to shower heads or bathtubs shall be controlled by an automatic compensating valve conforming to (a) ASME A112.18.1 / CSA B125.1, “Plumbing Supply Fittings,” or (b) ASSE 1016 / ASME A112.1016 / CSA B125.16, “Performance Requirements for Automatic Compensating Valves for Individual Showers and Tub/Shower Combinations.” (2) The requirement in Sentence (1) is permitted to be waived where hot water supplied only to bathtubs is controlled by (a) an automatic compensating valve conforming to CSA B125.3, “Plumbing fittings,” or (b) a temperature-limiting device conforming to ASSE 1070 / ASME A112.1070 / CSA B125.70, “Performance requirements for water temperature limiting devices.” (3) The requirement in Sentence (1) is permitted to be waived where the water is supplied by a single tempered water line controlled by an automatic compensating valve conforming to CSA B125.3, “Plumbing fittings.” r1 (4) Except as provided in Sentences (5) and (6) and 7.2.10.7A.(1), the temperature of water discharging from a shower head or into a bathtub shall not exceed 49°C. (5) In healthcare facilities and retirement homes, the temperature of water discharging from a shower head or into a bathtub shall (a) not exceed 43°C, and (b) be adjusted at the shower or bathtub controls. (6) Sentence (4) does not apply to hot water supplied to installed dishwashers or clothes washers.