New
a) Building standard VAV air handling unit (AHU) with chilled water coil and associated low and medium pressure ductwork with VAV boxes. Add heating coils to VAV boxes. Heating coils shall be sized for 115/105°F. Pipe all new hot water coils to base building low temperature hot water riser. b) Provide modulating electronic control of existing steam radiators through VAV controllers and tie into base building BMS. c) Provide an energy recovery ventilator (ERV) on outdoor air and exhaust. d) Supplemental units shall be water-cooled DX with chilled water coil. Chilled water coil shall be piped with a modulating valve for discharge air control. DX condenser shall be piped in bypass on the return with a dedicated circulator. Series piping of coil and condenser shall not exceed building standard CHW AHU pressure drop and shall provide modulating water flow in both DX and CHW modes of operation.
Renewal/Retrofit
a) Building standard VAV air handling unit (AHU) with chilled water coil and associated low and medium pressure ductwork with VAV boxes. b) Where ductwork and VAV boxes are being replaced, add heating coils to VAV boxes. Where no HVAC fit-out work is planned, add heating coil to AHU. Heating coils shall be sized for 115/105°F. Pipe all new hot water coils to base building low temperature hot water riser. c) Provide modulating electronic control of existing steam radiators through VAV controllers and tie into base building BMS. d) Provide an energy recovery ventilator (ERV) on outdoor air and exhaust. e) Supplemental units shall be water-cooled DX with chilled water coil. Chilled water coil shall be piped with a modulating valve for discharge air control. DX condenser shall be piped in bypass on the return with a dedicated circulator. Series piping of coil and condenser shall not exceed building standard CHW AHU pressure drop and shall provide modulating water flow in both DX and CHW modes of operation.
1333 Broadway:
New
a) Air conditioning systems shall be air-cooled VRF with condensing units located in an appropriately insulated and waterproofed MER room within the tenant area. Subject to landlord’s approval, tenant may locate condensing units in an area to be designated by landlord on the roof with interconnecting piping and wiring to be routed as per landlord’s direction. 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) Any 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 control of existing steam radiators through independent zone controllers and tie into base building BMS. d) Existing supplemental units may remain until the suite is converted to VRF.
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