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PACKAGED AIR CONDITIONING UNITS Section 15855 15-1207 7. Capable of controlling remove sensors 8. API for 3RD party monitor and control 9. Screen languages in English, Spanish, or French. 10. Built in Wi-Fi 11. Dropdown current weather and forecast screen 12. 365 Day Calendar for Holiday programming 13. Thermostat to be Title 24 compliant. B. Control wiring: 1. Install control wiring between AC Unit and Thermostat in conduit. Conduit shall be electric metallic tubing (EMT) and shall be thin wall galvanized steel. Connectors shall be steel rain tight compression type fittings with insulated throat. Couplins shall be steel rain tight compression type fittings. Set screw type fittings shall not be used. 2. Control wiring to be 8 -wire thermostat cable as required by thermostat manufacturer. 2.05 EQUIPMENT MOUNTING: A. Where noted, provide standard roof curb as follows: 1. Furnish and install a steel roof -mounting frame for bottom discharge and return air duct connection, where noted on Drawings. It shall mate to the bottom perimeter of the equipment. When flashed into the roof, it shall make a unit mounting curb and provide weatherproof duct connection and entry into the conditioned area. Flashing shall be the responsibility of Roofing Contractor. Fourteen inch high frame unless noted otherwise. B. Where noted, provide spring isolation curb. Isolation curb to be as follows: 1. Isolation curbs to be Mason Industries, Inc. Type ISC Curb. a. Curbs shall consist of continuous sheet metal frames above and below isolators. b. Curbs to be 16 gauge minimum. C. Spring isolators shall be selected for 2.0" deflection. d. Isolators shall be adjustable, free-standing and laterally stable and include a 1/4 inch acoustical neoprene cup and leveling bolt. e. Spring diameters shall be no less than 0.8 of the compressed height of the spring at the rated load with 50% additional travel to solid. f. Seismic snubbers with an all directional neoprene bushing and Y4" air gap shall be incorporated into each corner. g. A continuous sheet metal flashing shall be attached to the upper frame and be separated from the lower frame by a neoprene weatherseal. The sheet metal flashing shall incorporate removable cover plates for adjustment and inspection of isolators after the unit is set. h. The unit must be solidly fastened to the top steel frame and the lower sheet metal curb must be attached to the roof structure. i. Curb shall have an anchorage pre -approval number (OPA number) from OSHPD in the state of California attesting to the maximum certified horizontal and vertical load ratings. • Curbs without a pre -approved OPA number shall not be considered. • Pre -approval must include the entire curb assembly and not be limited to the vibration isolators. The preapproval must also have been obtained by full-scale seismic testing of the full curb assembly. Isolation curbs without preapproval of the entire curb assembly based on full scale seismic testing will not be considered and will not be reviewed. 7