b) Add heating coils to VAV boxes. Heating coils shall be sized for 120/110 °F. Pipe all new hot water coils to on-floor water to water heat pump (WWHP). Where WWHP has not yet been installed, provide a new WWHP tied into the base building condenser water system to generate low temperature hot water for the floor. c) Provide an energy recovery ventilator (ERV) on outdoor air and exhaust. d) Provide modulating electronic control of existing steam radiators through VAV controllers and tie into base building BMS. e) Supplemental units shall be water-cooled DX tied into the existing condenser water loop with water-side economizer.
New (Floors 5 and Above)
a) Building standard self-contained water-cooled DX VAV air conditioning units (AHUs) with associated low and medium pressure ductwork with VAV boxes. b) Provide an energy recovery ventilator (ERV) on outdoor air and exhaust. c) Provide modulating electronic control of existing steam radiators through VAV controllers and tie into base building BMS. d) Supplemental units shall be water-cooled DX tied into the existing condenser water loop with water-side economizer.
Renewal/Retrofit
a) Building standard self-contained water-cooled DX VAV air conditioning units (AHUs) with associated low and medium pressure ductwork with VAV boxes. Existing to remain constant volume units must be converted to single zone VAV or multi-zone VAV systems as necessary for code compliance. Constant volume control will not remain. b) Provide an energy recovery ventilator (ERV) on outdoor air and exhaust. c) Provide modulating electronic control of existing steam radiators through VAV controllers and tie into base building BMS. d) Supplemental units shall be water-cooled DX tied into the existing condenser water loop with water-side economizer.
1400 Broadway:
New
a) New air conditioning systems shall be air cooled VRF with condensing units located in an appropriately insulated and waterproofed MER room within the tenant area. b) Provide an energy recovery ventilator (ERV) on outdoor air and exhaust. c) Provide modulating control of existing steam radiators through the VRF fan coil controllers or independent zone controllers and tie into base building BMS. d) Supplemental cooling shall be provided by VRF units.
Renewal/Retrofit
a) Building standard self-contained water-cooled DX VAV air conditioning units (AHUs) with associated low and medium pressure ductwork with VAV boxes. Existing to remain constant volume units must be converted to single zone VAV or multi-zone VAV systems as necessary for code compliance. Constant volume control will not remain. b) Provide an energy recovery ventilator (ERV) on outdoor air and exhaust. c) Provide modulating electronic control of existing steam radiators through VAV controllers and tie into base building BMS. d) Supplemental units shall be water-cooled DX tied into the existing condenser water loop with water-side economizer.
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