Okaloosa County BOCC — March 18, 2014 — Chilled Cooler Contract — reading text

3.00 gal Drive cooling charge - 2.03 gal Drive cooling charge - 2.47 gal ckt 1 ckt 2 Shipping weight 11885.0 lb Operating weight 12085.0 lb Length 336.813 in Width 87.813 in Height 95.750 in Rated capacity (AHRI) 200.20 tons Rated efficiency (AHRI) 11.6 EER AHRI certification AHRI certified AHRI certified selection AHRI certified selection ASHRAE certified ASHRAE all versions selection TOPSS version number 159 Evaporator application Standard cooling (40-65F) Evaporator 2 pass evaporator configurations Evap leaving temp 44.00 F Evap entering temp 54.00 F Evap flow rate 478.60 gpm Evap fouling factor 0.00010 hr-sq ft-deg F/Btu Evaporator fluid type Water Pressure vessel code ASME pressure vessel code Evap pressure drop 15.20 ft H2O Evap fluid freeze point 32.00 F Min evap flow rate 228.00 gpm Press drop min evap flow 3.50 ft H20 Max evap flow rate 835.00 gpm Press drop max evap 44.90 ft H20 flow Saturated evap temp - 41.00 F Saturated evap temp - 41.80 F ckt 1 ckt 2 Flow switch Flow switch water - 35 Unit application Standard ambient Condenser fin options CompleteCoat fins Ambient air temp 95.00 F Elevation 0.00 ft Saturated cond temp - 123.60 F Saturated cond temp - 123.80 F ckt 1 ckt 2 Fan speed - ckt 1 878 rpm Fan speed - ckt 2 889 rom Unit hertz 60 hertz Unit voltage 460 volt 3 phases Transformer No transformer Compressor starter Variable speed compressors Incoming power line Single point power Power line connection Terminal block connection type Short circuit withstand Default amp Line voltage harmonic Line reactors (-30% TDD) rating _Unit power 207.80 kW Compressor power 189.00 kW 3  Compressor speed - ckt 5732 rpm Compressor speed - ckt 5732 rpm 1 2 Number of condenser 12.00 Each Fan motor power 15.70 kW fans RLA - condenser fan 2.70 Each RLA - comp A - AFD 154.00 A (each) input RLA - comp B - AFD 154.00 A Single point power MCA 383.00 A input Single point power MOP 500.00 A Short circuit current 10000.00 A rating A-weighted sound power 101 dBA A-weighted 75% sound 97 dBA power A-weighted 50% sound 95 dBA A-weighted 25% sound 95 dBA power power A-weighted sound 73 dBA A-weighted 75% sound 69 dBA pressure pressure A-weighted 50% sound 67 dBA A-weighted 25% sound 67 dBA pressure pressure Base unit module Model/type RTAE Manufacturing location Pueblo, CO Factory charge Refrigerant charge HFC- 134a F Evaporator module Water connections Grooved pipe Insulation Factory Insulation - 0.75 Controls Unit operator interface Tracer TD7 Display Remote communications BacNet Interface options Miscellaneous options Charge monitoring None I Warranty module (NAR terr. only) Parts - whole unit Year 2-5 parts warranty Labor warranty - 1st year 1st year labor warranty whole unit whole unit whole unit Labor warranty - beyond 2-5th year labor warranty Refrigerant warranty - 1st 1st year refrigerant 1st year whole unit year warranty Refrigerant warranty - 2-5th year refrigerant beyond 1st year warranty 4 General Units are leak and pressure tested at 390 psig (2689kPa) high side, 250 psig (1724 kPa) low side, then evacuated and charged. All air-cooled Stealth TM chillers are factory tested to confirm operation prior to shipment. Unit panels, structural elements and control boxes are constructed or galvanized steel and mounted on a bolted galvanized steel base. Unit panels, control boxes and the structural base are finished with a baked on powder paint. All paint meets the requirement for outdoor equipment of the US Navy and other federal government agencies. Anytime water is present in the evaporator, the Trane UC800 controller must have flow control of the chilled water system. Flow control can be done either directly or through an input to a building automation system to conduct an action resulting in minimum flow through the chiller evaporator barrel to avoid potentially catastrophic damage to the evaporator due to freezing. If the system has sufficient glycol to protect down to the lowest expected ambient, flow control is optional. Factory Refrigerant Charge (HFC-134a) Packaged units ship with a full operating charge of oil and HFC-134a refrigerant. Evaporator The evaporator is a tube-in-shell heat exchanger design with internally finned copper tubes roller expanded unto the tube sheet. The evaporator is designed, tested and stamped in accordance with ASME Pressure Vessel Code Section VIII for a refrigerant side working pressure of 200 psig (1379kPa). The evaporator is designed for a water side working pressure of 150 psig (1034 kPa). Water connections are grooved pipe. Each shell includes a vent, a drain and fittings for temperature control sensor and is insulated with UV resistant 0.75 inch Armaflex II or equal insulation (K=0.28). Insulation also covers the liquid and suction line and evaporator heads. Heaters, with thermostat, are provided to help protect the evaporator from freezing at ambient temperatures down to -20F (-29C), depending on application. Note: A separate Field supplied low voltage power source is required to power the freeze protection. Operating Temperature Unit is designed for operation in standard leaving evaporator temperature (equal to or greater than 40.0 F.) Pressure Vessel Code Chiller complies with ASME Pressure Vessel Code Section VIII. ASME nameplates are attached to applicable pressure vessels including oil separators. Condenser and Fans Air-cooled condenser coils have aluminum fins mechanically bonded internally finned seamless aluminum tubing. The tubing is a long life alloy designed to deliver corrosion performance that meets or exceeds microchannel coils. The condenser coil has an integral subcooling circuit. Condensers are factory proof tested at 525.00 psi and leak tested with helium in a mass spectrometer chamber at 150.00 psi. All tube connections are mechanical except the brazed inlet and outlet connections. Completely assembled coils are dipped and baked in an electro-mechanically bonded flexible epoxy coating. Provides uniform epoxy coating of all surfaces on aluminum fins, aluminum tubes, coil frames, and heads of condenser. No associated surfaces and remain bare. Allows for corrosion resistance without performance degradation. Coils with coating passed 6000-hour salt spray test. Condenser Fans are direct-drive vertical discharge. The condenser fan motors are permanent magnet motors with integrated drive to provide variable speed fans control for all fans and are designed with permanently lubricated ball bearings, internal temperature and current overload protection, and customer fault feedback as a standard product offering. The fan impeller is a nine bladed-shrouded fan made from heavy-duty molded plastic. Standard units will start and operates between 32.0 F to 105.0 F ambient. InvisiSound Standard Each rotary screw compressor will have a muffler as standard and each condenser fan will be low noise as standard. Compressor and Lube Oil System The rotary screw compressor is semi-hermetic, direct drive with capacity control via a variable speed drive, rolling element bearings, differential refrigerant pressure oil pump and oil heater. The motor is a suction gas cooled, hermetically sealed, permanent magnet motor. Oil separator is provided separate from the compressor. Oil filtration is provided internal to the compressor. Check valves in the compressor discharge and lube oil system are also provided. Drive Cooling System Each refrigeration circuit has a compressor drive cooling circuit. Each drive cooling circuit includes a wet rotor circulation pump that circulates a secondary heat transfer fluid in a closed system between the adaptive frequency drive components and a brazed plate heat exchanger. The pump is fed from a thermal expansion thank with a vented-pressure cap which is also used as the circuit pressure relief. The circuit also includes a particulate strainer and a drain valve for servicing. Refrigeration Circuits Each unit has two refrigerant circuits, with one rotary screw compressor per circuit. Each refrigerant circuit includes a compressor suction and discharge service valve, liquid shutoff valve, removable core filter, liquid sight glass with moisture indicator, charging port and an electronic expansion valve. Fully modulating compressors and electronic expansion valves provide variable capacity modulation over