WAC 51-11C-40408. Section C404.8 — Demand recirculation controls

C404.8 Demand recirculation controls. Demand recirculation water systems shall have controls that comply with both of the following: 1. The controls shall start the pump upon receiving a signal from the action of a user of a fixture or appliance, sensing the presence of a user of a fixture or sensing the flow of hot or tempered water to a fixture fitting or appliance. 2. The controls shall limit the temperature of the water entering the cold-water piping to not greater than 104°F (40°C).