3925 S Bristol St-HVAC - Plan - Laserfiche WebLink

Home Browse Search

13.High Efficient Motors listed shall meet section 313 of the Energy Independence and Security Act of 2007; (EISA 2007). 23 81 19.13.B Delivery, Storage, and Handling 1.Unit shall be stored and handled per manufacturer’s recommendations. 23 81 19.13.E Project Conditions 1.As specified in the contract. 23 81 19.13.F Operating Characteristics 1.Unit shall be capable of starting and running at 125°F (52°C)ambient outdoor temperature, meeting maximum load criteria of AHRI Standard 210/240 or 340/360 at ± 10% voltage. 2.Compressor with standard controls shall be capable of operation down to 0°F (2°C), ambient outdoor temperatures.See below for head pressure control package or winter start kit. 3.Unit shall discharge supply air vertically or horizontally as shown on contract drawings. 4.Unit shall be factory configured for vertical supply & return configurations. 5.Unit shall be field convertible from vertical to horizontal airflow on all models. 6.Unit shall be capable of mixed operation: vertical supply with horizontal return or horizontal supply with vertical return. 23 81 19.13.G Electrical Requirements 1.Main power supply voltage, phase, and frequency must match those required by the manufacturer. 23 81 19.13.H Unit Cabinet 1.Unit cabinet shall be constructed of galvanized steel with exterior surfaces coated with a non-chalking, powder paint finish, certified at 750 hour salt spray test per ASTM-B117 standards. 2.Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210/240 or 340/360 minimum exterior sweat criteria. Interior surfaces shall be insulated with a minimum 1/2- in. thick, 1 1/2 lb density, flexible fiberglass insulation, neoprene coated on the air side. Aluminum foil- faced fiberglass insulation shall be used in the gas heat compartment. Fan shall be a belt drive assembly and include an adjustable pitch motor pulley. Job site selected brake horsepower shall not exceed the motors nameplate horsepower rating plus the service factor (Only premium efficiency motors have hp rating on the nameplate). Units shall be designed to operate within the service factor. Fan wheel shall be double inlet type with forward curve blades, dynamically balanced to operate smoothly throughout the entire range of operation. Airflow design shall be constant volume. Bearings shall be sealed and permanently lubricated for longer life and no maintenance. Condenser Fan Assembly: The outdoor fans shall be of the direct drive type, discharge air vertically, have aluminum blades riveted to corrosion resistant steel spider brackets and shall be dynamically balanced for smooth operation. The outdoor fan motors shall have permanently lubricated bearings internally protected against overload conditions and staged independently. 3.Base of unit shall have a minimum of four locations for thru-the-base gas and electrical connections (factory installed or field installed), standard. 4.Base Rail a.Unit shall have base rails on a minimum of 4 sides. b.Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead rigging. c.Holes shall be provided in the base rail for moving the rooftop by fork truck.. d.Base rail shall be a minimum of 16 gauge thickness. 5.Condensate pan and connections a.Shall be an internally sloped condensate drain pan made of a non-corrosive material. b.Shall comply with ASHRAE Standard 62. c.Shall use a 3/4” - 14 NPT drain connection, possible either through the bottom or side of the drain pan. Connection shall be made per manufacturer’s recommendations. 6.Top panel a.Shall be a single piece top panel. 7.Gas Connections a.All gas piping connecting to unit gas valve shall enter the unit cabinet at a single location on side of unit b.Thru-the-base capability (1.)Standard unit shall have a thru-the-base gas- line location using a raised, embossed portion of the unit basepan. Guide Specification for York® Sun™ Core Page: 15 3925 S Bristol St-HVAC12/23/2024