Section 607 Building Service Water Heating Systems
- An onsite renewable energy system.
- A heat recovery system.
- An onsite renewable energy system.
- A heat recovery system.
- Group A-2, restaurants and banquet halls;
- Group F, laundries;
- Group R-1, boarding houses (transient), hotels (transient), motels (transient);
- Group R-2 buildings;
- Group A-3, health clubs and spas; and
- Group I-2, hospitals, psychiatric hospitals and nursing homes.
- Factory-installed piping within service water heating equipment tested and rated in accordance with Section 606.4.
- Piping conveying fluids that is neither heated nor cooled, including cold water supply and natural gas piping.
- Hot water supply piping exposed under sinks, lavatories and similar fixtures.
- Hot water distribution piping buried within blown-in or sprayed roof/ceiling insulation, such as fiberglass or cellulose, where the insulation completely and continuously surrounds the pipe.
Exception: For piping other than that located under building slabs, insulation is not required where the insulation manufacturer stipulates that the pipe insulation will maintain its insulating value in underground applications in damp soil where installed in accordance with the manufacturer's instructions.
- A normally open, momentary contact switch.
- Motion sensors that make momentary contact when motion is sensed. After the signal is sent, the sensor shall go into a lock out mode for not less than 5 minutes to prevent sending a signal to the electronic controls while the circulation loop is still hot.
- A flow switch.
- A door switch.
The controls for the pump shall be electronic and operate on the principal of shutting off the pump with a rise in temperature. Electronic controls shall have a lock-out to prevent operation at temperatures greater than 105°F (41°C) in the event of failure of the device that senses temperature rise. The electronic controls shall have a lock out mode for not more than 5 minutes that prevents extended operation of the pump if the sensor fails or is damaged.