Indirect heating energy transfer station (ETS) model that controls the building chilled water supply temperature by modulating a primary control valve on the district supply side. The design is based on a typical district heating ETS described in ASHRAE's District Heating Guide. As shown in the figure below, the building pumping design (constant/variable) is specified on the building side and not within the ETS.
American Society of Heating, Refrigeration and Air-Conditioning Engineers. (2013). Chapter 5: Consumer Interconnection. In District Heating Guide.