General Requirements for Steam Service (S-11965) Including CHP Interconnect
General requirements for customers utilizing Con Edison steam service or planning to interconnect Combined Heat and Power (CHP) facilities to the Con Edison Steam Distribution System

Specific Engineering Specifications
The following documents describe specific requirements for customer installation of a high pressure steam meter station and associated equipment. It is essential that a professional engineer retained by the customer submit to Con Edison a load letter detailing steam summer and winter needs of the building. Con Edison shall provide a ruling on the steam service pipe size and steam meter sizes after the load letter has been received. Con Edison will determine the type, size, make and number of meters best suited to the service requirements. The Customer must design and install (or modify) the steam meter station in a manner specified by Con Edison. Con Edison shall send to the professional engineer an Engineering Specification Package that details the Company’s requirements for the new or modified steam service. This package shall also include, if needed, the requirements for interconnecting a customer’s CHP facility to Con Edison’s steam distribution system.

EO-9352-B
Customer’s Installation of Steam Trap for 200 psig Service

EO-9380-C
Customer’s Installation of Dresser Coupling Sleeve for Steam Service Sizes 1” to 12”

EO-10296-B
Installation of Customer Inside Service Valve for 200 psi Service

S-464
Straightening Vanes for use with Steam Flow Meter

S-588
Typical Assembly and Installation of Vortex Flow Meter

S-591
Meter Piping with Straightening Vanes for Vortex Flow Meter

S-593
Meter Pan for Two Vortex Steam Meter Flow Computers

S-599
Mounting Panel for Vortex Meter Relay for Control of Motor-Operated Ball Valve

S-622
Meter Pan for One Vortex Steam Meter Flow Computer

S-589
Typical Piping Installation of Single Vortex Steam Meter (1” to 4”)

S-590
Typical Piping Installation of Two Vortex Steam Meters (1” to 4”) for Segregated Loads

S-619
Typical Wiring Diagram for Two Segregated Vortex Steam Meters

S-595
Typical Piping Installation of a Two Meter (1” to 4”) Sequential Station with One Motorized Ball Valve – Vortex Meter

S-631
Typical Wiring Diagram for Two Vortex Steam Meters with One Motorized Ball Valve

S-596
Typical Piping Installation of a Three Meter (1” to 4”) Sequential Station with Two Motorized Ball Valves – Vortex Meter

S-624
Typical Wiring Diagram for Three Vortex Steam Meters with Two Motorized Ball Valves

S-624 for KEP #1
Wiring Diagram for KEP #1 (exploded view)
 
S-624 for KEP #2
Wiring Diagram for KEP #2 (exploded view)

S-625
Typical Piping Installation of a Three Meter (4” to 12”) Sequential Station with Two Motorized Angle Globe Valves – Vortex Meter

S-635
Typical Wiring Diagram for Three Vortex Steam Meter (4” to 12”) with Two Motorized Angle Globe Valves and Pressure Transmitter

S-634
Typical Meter Pan Layout for Three Steam Flow Computers with Two Motorized Angle Globe Valves

S-9051
Gasket Material For Use on the Steam Distribution System

S-9021
Thermal Insulation Requirements for Steam Meter Stations