Common use of Developer's Responsibility Clause in Contracts

Developer's Responsibility.  HVAC System The building developer is responsible for designing and installing the building HVAC systems. There are some differences and similarities with conventional systems, as explained below. The following conventional building elements are not required for DE-Connected buildings2:  Boilers, furnaces, heat pumps, domestic hot water heaters or any other heat production equipment.  Auxiliaries to heating systems such as stacks and breeching.  Natural gas service. The building will require internal thermal distribution systems, including:  Internal distribution pumps and piping (i.e. a hydronic space heating distribution loop)  Heating elements such as fan-coil units, air handling unit coils, and/or perimeter (baseboard) or in-floor radiant heating systems.  All building heating requirements are to be supplied by DEU. Exceptions will be reviewed on a case-by-case basis. The following are some design conditions that are specific to district energy:  DE-Connected buildings host branch (service) lines from the DPS. The DEU branch lines enter the building, similar to other utilities, and transfer heat to the ETS.  The building owner and DEU agree on a suitable location for the ETS. The ETS invariably requires less space than comparable heat production equipment (e.g. boilers) that the ETS displaces. To reduce DEU piping inside the building, the ETS should be located as close as possible to the DEU branch pipeline entering the building – generally on an exterior wall in the basement of the building, nearest to the main district energy pipe. 2 DE-Ready buildings will require this equipment to serve space and DHW heating requirements. However, heat pumps are not permitted in DE-Ready buildings.  The DEU operates most effectively and efficiently with the use of low temperatures in the building heating systems.

Developer's Responsibility.  ▪ HVAC System The building developer is responsible for designing and installing the building HVAC systems. There are some differences and similarities with conventional systems, as explained below. The following conventional building elements are not required for DE-Connected buildings2:  • Boilers, furnaces, heat pumps, domestic hot water heaters or any other heat production equipment.  • Auxiliaries to heating systems such as stacks and breeching.  • Natural gas service. The building will require internal thermal distribution systems, including:  • Internal distribution pumps and piping (i.e. a hydronic space heating distribution loop)  • Heating elements such as fan-coil units, air handling unit coils, and/or perimeter (baseboard) or in-floor radiant heating systems.  • All building heating requirements are to be supplied by DEU. Exceptions will be reviewed on a case-by-case basis. The following are some design conditions that are specific to district energy:  • DE-Connected buildings host branch (service) lines from the DPS. The DEU branch lines enter the building, similar to other utilities, and transfer heat to the ETS.  • The building owner and DEU agree on a suitable location for the ETS. The ETS invariably requires less space than comparable heat production equipment (e.g. boilers) that the ETS displaces. To reduce DEU piping inside the building, the ETS should be located as close as possible to the DEU branch pipeline entering the building – generally on an exterior wall in the basement of the building, nearest to the main district energy pipe. 2 DE-Ready buildings will require this equipment to serve space and DHW heating requirements. However, heat pumps are not permitted in DE-Ready buildings.  • The DEU operates most effectively and efficiently with the use of low temperatures in the building heating systems.