18-29-607.1 Where required.

   In residential occupancies, hot water shall be supplied to plumbing fixtures and equipment utilized for bathing, washing, culinary purposes, cleansing, laundry or building maintenance. In nonresidential occupancies, hot water shall be supplied for culinary purposes, cleansing, laundry or building maintenance purposes. In nonresidential occupancies, hot water or tempered water shall be supplied for bathing and washing purposes.

   No water exceeding 140°F (60°C) shall discharge into any lavatory, sink, bathtub or shower. This provision shall not supersede the requirements for temperature-limiting valves in Section 18-29-424.

(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 27)

18-29-607.1.1 Temperature limiting means.

   A thermostat control for a water heater shall only serve as the temperature limiting means for the purpose of complying with the requirements of this chapter for maximum hot or tempered water delivery temperature at fixtures where the water heater complies with ASSE 1082 or ASSE 1085.

(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 27)

18-29-607.1.2 Tempered water temperature control.

   Tempered water shall be controlled by one of the following:

   1.   A limiting device conforming to ASSE 1070/ASME A112.1070/CSA B125.70 and set to not greater than 100°F (43°C).

   2.   A thermostatic mixing valve conforming to ASSE 1017.

   3.   A water heater conforming to ASSE 1082.

   4.   A water heater conforming to ASSE 1084.

   This provision shall not supersede the requirement for protective shower valves in accordance with Section 18-29-424.

(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 27)

18-29-607.1.2.1 Reserved.

Editor's note – Coun. J. 10-14-21, p. 37722, Art. VI, § 27, repealed § 18-29-607.1.2.1, which pertained to mixed water temperature.

18-29-607.2 Hot or tempered water supply to fixtures.

   The developed length of hot or tempered water piping, from the source of hot water to the fixtures that require hot or tempered water, shall not exceed 50 feet (15 240 mm). Recirculating system piping and heat-traced piping shall be considered to be sources of hot or tempered water.

(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 27)

18-29-607.2.1 Circulation systems and heat trace systems for maintaining heated water temperature in distribution systems.

   For Group R-2, R-3, R-4 and R-5 occupancies that are four stories or less in height above grade plane, the installation of heated water circulation and temperature maintenance systems shall be in accordance with Section R403.5.1 of the Chicago Energy Conservation Code. For other than Group R-2, R-3, R-4 and R-5 occupancies that are four stories or less in height above grade plane, the installation of heated water circulation and heat trace systems shall be in accordance with Section C404.6 of the Chicago Energy Conservation Code.

(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 27)

18-29-607.2.1.1 Pump controls for hot water storage system.

   The controls on pumps that circulate water between a water heater and a storage tank for heated water shall limit operation of the pump from heating cycle startup to not greater than 5 minutes after the end of the cycle.

(Added Coun. J. 10-14-21, p. 37722, Art. VI, § 27)