R403.5.3 Hot water pipe insulation (Prescriptive). Insulation for hot water piping with a thermal resistance, R-value, of not less than R-3 shall be applied to the following:
1. Piping serving more than one (1) dwelling unit.
2. Piping located outside the conditioned space.
3. Piping located under a floor slab.
4. Buried piping.
5. Supply and return piping in recirculation systems other than demand recirculation systems.
(Ord. 42-20, 12-1-2020, eff. 1-1-2021)