SECTION 15732 - PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. This Section includes packaged, outdoor, central-station air-handling units (rooftop units) with the following components and accessories: 1. Direct-expansion cooling. 2. Hot-gas reheat. 3. Electric-heating coils. 4. Integral, space temperature controls. 5. Roof curbs. 1.3 DEFINITIONS A. RTU: Rooftop unit. As used in this Section, this abbreviation means packaged, outdoor, central-station air-handling units. This abbreviation is used regardless of whether the unit is mounted on the roof or on a concrete base on ground. B. Supply-Air Fan: The fan providing supply air to conditioned space. "Supply air" is defined as the air entering a space from air-conditioning, heating, or ventilating apparatus. C. Supply-Air Refrigerant Coil: Refrigerant coil in the supply-air stream to absorb heat (provide cooling) during cooling operations. "Supply air" is defined as the air entering a space from airconditioning, heating, or ventilating apparatus. 1.4 SUBMITTALS A. Product Data: Include manufacturer's technical data for each RTU, including rated capacities, dimensions, required clearances, characteristics, furnished specialties, and accessories. B. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection. 1. Wiring Diagrams: Power, signal, and control wiring. C. Coordination Drawings: Plans and other details, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of the items involved: PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-1
1. Structural members to which RTUs will be attached. 2. Roof openings 3. Roof curbs and flashing. D. Field quality-control test reports. E. Operation and Maintenance Data: For RTUs to include in emergency, operation, and maintenance manuals. F. Warranty: Special warranty specified in this Section. 1.5 QUALITY ASSURANCE A. ARI Compliance: 1. Comply with ARI 210/240 and ARI 340/360 for testing and rating energy efficiencies for RTUs. 2. Comply with ARI 270 for testing and rating sound performance for RTUs. B. ASHRAE Compliance: 1. Comply with ASHRAE 15 for refrigeration system safety. 2. Comply with ASHRAE 33 for methods of testing cooling and heating coils. C. NFPA Compliance: Comply with NFPA 90A and NFPA 90B. D. UL Compliance: Comply with UL 1995. E. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use. 1.6 WARRANTY A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to replace components of RTUs that fail in materials or workmanship within specified warranty period. 1. Warranty Period for Compressors: Manufacturer's standard, but not less than five years from date of Substantial Completion. 2. Warranty Period for Control Boards: Manufacturer's standard, but not less than three years from date of Substantial Completion. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-2
PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Basis-of-Design Product: Subject to compliance with requirements, provide the product indicated in the schedule at the end of this section or a comparable product by one of the following: 1. AAON, Inc. 2. Addison Products Company. 3. Carrier Corporation. 4. Engineered Air. 5. Lennox Industries Inc. 6. McQuay International. 7. Trane; American Standard Companies, Inc. 8. YORK International Corporation. 2.2 CASING A. General Fabrication Requirements for Casings: Formed and reinforced double-wall insulated panels, fabricated to allow removal for access to internal parts and components, with joints between sections sealed. B. Exterior Casing Material: G90 galvanized steel on both sides with factory-painted finish on the exterior side, with pitched roof panels and knockouts with grommet seals for electrical and piping connections and lifting lugs. 1. Exterior Casing Thickness: 0.052 inch thick for 6-ton size and smaller and 0.0626 inch thick for larger sizes. 2. Finish: Corrosion resistant polyurethane paint exceeding 2,500 hour salt spray test. C. Inner Casing Fabrication Requirements: 1. Inside Casing: G90 galvanized steel, 0.028 inch thick for 6-ton size and smaller and 0.034 inch thick for larger sizes. D. Casing Insulation and Adhesive: 2-inch double wall foam panel cabinet construction. Comply with NFPA 90A or NFPA 90B. 1. Material: Rigid polyurethane foam. 2. Thickness: 2 inch. 3. R-value: 13 minimum. 4. Thermal breaks: casing constructed with thermal breaks so no metal contact from inside to outside. E. Condensate Drain Pans: Double sloped stainless-steel sheet, a minimum of 2 inches deep, and complying with ASHRAE 62.1-2004. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-3
1. Double-Wall Construction: Fill space between walls with foam insulation and seal moisture tight. 2. Drain Connections: Threaded nipple both sides of drain pan. F. Airstream Surfaces: Surfaces in contact with the airstream shall comply with requirements in ASHRAE 62.1-2004. 2.3 FANS A. Direct-Driven Supply-Air Fans: Double width, backward inclined, centrifugal; with permanently lubricated, motor resiliently mounted in the fan inlet. Aluminum or painted-steel wheels, and galvanized- or painted-steel fan scrolls. B. Condenser-Coil Fan: Propeller, mounted on shaft of permanently lubricated motor. C. Fan Motor: Comply with requirements in Division 15 Section "Motors." 2.4 COILS A. Supply-Air Refrigerant Coil: 1. Copper-plate fin and seamless copper tube in steel casing with equalizing-type vertical distributor. a. Polymer strip shall prevent all copper coils from contacting steel coil frame or condensate pan. 2. Coil Split: Interlaced. 3. Polymer E-Coated. 4. Condensate Drain Pan: Stainless steel formed with pitch and drain connections complying with ASHRAE 62.1-2004. B. Outdoor-Air Refrigerant Coil: 1. Copper-plate fin and seamless copper tube in steel casing with equalizing-type vertical distributor. a. Polymer strip shall prevent all copper coils from contacting steel coil frame or condensate pan. 2. Polymer E-Coated. C. Hot-Gas Reheat Refrigerant Coil: 1. Copper-plate fin and seamless copper tube in steel casing with equalizing-type vertical distributor. a. Polymer strip shall prevent all copper coils from contacting steel coil frame or condensate pan. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-4
2. Polymer E-Coated. D. Electric-Resistance Heating: 1. Open Heating Elements: Resistance wire of 80 percent nickel and 20 percent chromium, supported and insulated by floating ceramic bushings recessed into casing openings, fastened to supporting brackets, and mounted in galvanized-steel frame. Terminate elements in stainless-steel machine-staked terminals secured with stainless-steel hardware. 2. Overtemperature Protection: Disk-type, automatically reset, thermal-cutout, safety device; serviceable through terminal box. 3. Overcurrent Protection: Manual-reset thermal cutouts, factory wired in each heater stage. 4. Control Panel: Unit mounted with disconnecting means and overcurrent protection. Include the following controls: a. Magnetic or Mercury contactors. b. Step Controller: Pilot lights and override toggle switch for each step. c. Time-delay relay. d. Airflow proving switch. 2.5 REFRIGERANT CIRCUIT COMPONENTS A. Number of Refrigerant Circuits: as indicated in the Schedule. B. Compressor: Hermetic, variable-capacity scroll, mounted on vibration isolators; with internal overcurrent and high-temperature protection, internal pressure relief, and crankcase heater. C. Refrigeration Specialties: 1. Refrigerant: R-407C or R-410A. 2. Expansion valve with replaceable thermostatic element. 3. Refrigerant filter/dryer. 4. Manual-reset high-pressure safety switch. 5. Automatic-reset low-pressure safety switch. 6. Minimum off-time relay. 7. Automatic-reset compressor motor thermal overload. 8. Brass service valves installed in compressor suction and liquid lines. 9. Low-ambient kit high-pressure sensor. 10. Fully modulating hot-gas reheat control valves. 2.6 AIR FILTRATION A. Minimum arrestance according to ASHRAE 52.1, and a minimum efficiency reporting value (MERV) according to ASHRAE 52.2. 1. Pleated: Minimum 90 percent arrestance, and MERV 7. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-5
2.7 DAMPERS A. Outdoor-Air Damper: Linked damper blades, for 0 to 25 percent outdoor air, with motorized damper and filter. 2.8 ELECTRICAL POWER CONNECTION A. Provide for single connection of power to unit with unit-mounted disconnect switch accessible from outside unit and control-circuit transformer with built-in overcurrent and phase loss protection. 2.9 CONTROLS A. Control devices, including sensors, transmitters, relays, switches, thermostats, humidistats, CO2 sensor, operators, actuators, and valves, shall be manufacturer's standard items to accomplish indicated control functions. 2.10 SEQUENCE OF OPERATION A. HVAC Modes of Operation 1. Cooling 2. Heating 3. Ventilation 4. Dehumidification 5. Off B. Cooling Mode: 1. Cooling is enabled when the temperature at the Mode Enable Sensor rises one deadband above the Cooling Setpoint. Cooling is disabled when the Mode Enable temperature falls one deadband below the Cooling Setpoint. The setpoint and deadband are user adjustable. 2. Once in the Cooling Mode the unit will stage or modulate cooling to maintain the Supply Air Temperature at the Active Supply Air Cooling Setpoint (See Reset Temperature Sources section for explanation). C. Heating Mode: 1. Staged Electric. 2. Multiple stages of heating: (See Relay Outputs Section) subject to minimum run times, minimum off times, staging up and staging down delays. 3. Heating is enabled when the temperature at the Mode Enable Sensor falls one deadband below the Heating Setpoint. Heating is disabled when the Mode Enable temperature rises one deadband above the Heating Setpoint. 4. Once in the Heating Mode the unit will stage or modulate heating to maintain the Supply Air Temperature at the Active Supply Air Heating Setpoint (See Reset Temperature Sources section for explanation). PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-6
D. Ventilation Mode: 1. This is only available in the Occupied Mode of operation and is generated anytime there is no demand for heating or cooling. The supply fan operates for recirculation. E. Dehumidification Mode: 1. Dehumidification is enabled based on a Space Humidity Setpoint from a Space Humidity Sensor. 2. Once in DX Dehumidification, cooling is staged to maintain the Evaporator Coil Suction Temperature at the Coil Suction Temperature Setpoint so as to achieve the maximum dehumidification. A Coil Suction Pressure Sensor is required and is factory installed. 3. Dehumidification can be selected as a priority mode; otherwise it is only available when heating and cooling demands are satisfied. 4. Reheat is always controlled to the Active Supply Air Temperature Setpoint which will be different during Heating, Cooling, or Vent Modes. During Vent Mode the Supply Air Temperature Setpoint is calculated to be halfway between the HVAC Mode Setpoints. 5. Reheat options are modulating or fixed hot gas reheat, field wired downstream duct heat, and, in certain applications, unit heat. F. Off Mode 1. Occurs in the Unoccupied Mode when there is no heating, cooling or dehumidification demand. 2. Supply fan is off and the outside air damper is closed. G. Mode Enable Sensor Options: The temperature of this sensor will determine if the unit is in heating, cooling or vent mode during Occupied operation. The following options shall be available: 1. Space Air Temperature Sensor 2. Return Air Temperature Sensor H. Supply Air Temperature Setpoint Reset: The controller shall be configured to use various sources to reset the Supply Air Temperature Setpoint. Since the Supply Air Temperature Setpoints are not fixed during reset, they are Active Supply Air Temperature Setpoints. The following options are available. 1. Return Air Temperature a. The controller will automatically modulate the Supply Air Setpoint to deliver the desired Control Cooling or Heating Setpoint for the selected reset temperature 2. Space Air temperature a. The controller shall automatically modulate the Supply Air Setpoint to deliver the desired Control Cooling or Heating Setpoint for the selected reset temperature b. The Slide Adjust feature on the Space Sensor can be used to remotely raise or lower the SAT/Reset Source heating and cooling setpoints. 3. Remote SAT Reset (0-5 VDC or (0-10 VDC w/resistor network)) PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-7
a. The controller shall proportionally reset the Supply Air Setpoint from the SAT/Reset Source setpoints to the Remote SAT Reset setpoints during the Heating or Cooling Mode based on a 0-5VDC signal from another BAS system. b. When this feature is used the Slide Adjust feature on the Space Sensor is not available. I. Coil Suction Temperature Setpoint Reset 1. During dehumidification the controller shall automatically reset the Coil Suction Temperature Setpoint within a ± 5 range based on the space or return air humidity sensor condition changing ± 5 % from the humidity setpoint. J. Occupied Operation: 1. Internal week schedule with 2 start/stops per day available 2. Remote Forced Occupied contact closure 3. Pushbutton Override button on a Space Sensor (Override length is user adjustable) 4. Monitoring an external Orion scheduling device 5. Forced Occupied command from an Orion Operator Interface device K. Unoccupied Operation 1. Uses only space conditions for mode selection 2. Uses Night Setback Setpoints for heating and cooling calls and normal dehumidification setpoints for dehumidification calls. 3. If there is no call for heating, cooling or dehumidification the unit will be off. L. Space Sensor Operation 1. Sensor with Override and Setpoint Slide Adjust. a. Allow space setpoint adjustment of up to ± 6 F. 2. The Slide Adjust can adjust the setpoint of whichever temperature sensor is configured as the controlling sensor, even if it is not the installed Space Sensor. If Space Temperature is the SAT/Reset Source, then the Slide Adjust will adjust the HVAC Mode Enable setpoints and the SAT/Reset Source setpoints simultaneously. 3. During Unoccupied hours the Override Button can be used to force the unit back into the Occupied Mode (by pressing the button for less than 3 seconds) for a user-defined override duration of up to 8.0 hours. Pressing the button between 3 and 10 seconds cancels the override. M. Outdoor Air Lockouts 1. Mechanical cooling is disabled when the Outdoor Air Temperature is below the Cooling Lockout Setpoint. 2. Mechanical heating is disabled when the Outdoor Air Temperature is above the Heating Lockout Setpoint. N. Temperature Protection PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-8
1. Activated when the Supply Air Temperature (SAT) rises above the High Cutoff Temperature (immediate) or drops below the Low Cutoff Temperature (for 10 minutes) both of which are user adjustable. This mode shuts off the unit (with a 3 minute fan off delay) until the mode is cancelled. 2. This mode is cancelled when the SAT drops 10 degrees below the High Cutoff Temperature Setpoint or rises 10 degrees above the Low Temp Cutoff Temperature Setpoint, or when the unit changes back into Occupied Operation. O. Relay Outputs: Provide 20 output relays that that are configurable for the controller (Relay #1 is reserved for the Supply Fan and is not configurable). The configuration options are as follows: 1. Heating Stages: Economizer (Indicator or additional function) 2. On/Off Hot Gas Reheat: Alarm (Indicator or additional function) P. Scheduling 1. Utilizes a Real Time Clock with an internal power source that allows the controller to keep time and allows for scheduling. 2. Has an internal 7 day schedule with 2 start/stops per day. 3. Allows scheduling of up to 14 holiday periods per year. Q. Alarm Detection and Reporting 1. Continuously performs self diagnostics during normal operations to determine if any operating failures have occurred. 2. These failure (alarms) can be reported to a wall mounted System Manager (requires a MiniLink Polling Device), a hand-held Modular Service Tool, the Tactio SI Touchscreen Interface, or to a computer running Prism II software. 3. Diagnostic LEDs on the controller will generate blink codes for certain alarm conditions. 4. The following are the available alarm designations for the Controller: R. Trend Logging a. No Supply Sensor b. Bad outdoor Air Temp c. Space Sensor Failure d. Mechanical Cooling Failure e. Mechanical Heating Failure f. Fan Proving Alarm g. Dirty Filter Alarm h. Smoke Alarm i. Low Supply Air Alarm j. High Supply Air Alarm k. Low Control Temp Alarm l. High Control Temp Alarm 1. Continuously maintains an Internal Trend Log in memory on the controller which records a fixed set of values at a user-defined interval. 2. 120 log positions (timed retrievals) are available on the controller. 3. Once these positions are full, it begins overwriting the oldest data. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-9
4. Values can be retrieved using the Prism II graphical front-end software program. 5. With Prism running continuously, values can be saved to the computer hard drive at regular intervals to keep from losing data. 6. The following are the fixed items, when used, that can be logged: a. Date b. Time c. Space Temperature d. Return Air Temperature e. Outdoor Air Temperature f. Active Cooling Setpoint g. Active Heating Setpoint h. Supply Air Temperature i. Active Supply Air Temp Setpoint j. Outdoor Air Humidity k. Indoor Air Humidity l. Duct Static Pressure m. Building Static Pressure n. Economizer Signal Percentage o. Supply Fan VFD/Bypass Damper Signal Percentage p. Exhaust Fan VFD/Exhaust Damper Signal Percentage q. Modulating Heat Signal Percentage r. Modulating Cool Signal Percentage s. On Board Relay Status (BIT Pattern) t. Expansion Board Relay Status (BIT Pattern) 2.11 ACCESSORIES A. Electric heater with integral thermostat maintains minimum 50 deg F temperature in gas burner compartment. B. Duplex, 115-V, ground-fault-interrupter outlet with 15-A overcurrent protection. Include transformer if required. Outlet shall be energized even if the unit main disconnect is open. C. Low-ambient kit using damper or variable-speed condenser fans for operation down to 35 deg F. D. Coil guards of painted, galvanized-steel wire. 2.12 ROOF CURBS A. Materials: Galvanized steel with corrosion-protection coating, watertight gaskets, and factoryinstalled wood nailer; complying with NRCA standards. 1. Curb Insulation and Adhesive: Comply with NFPA 90A or NFPA 90B. a. Materials: ASTM C 1071, Type I or II. b. Thickness: 2 inches. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-10
2. Application: Factory applied with adhesive and mechanical fasteners to the internal surface of curb. a. Liner Adhesive: Comply with ASTM C 916, Type I. b. Mechanical Fasteners: Galvanized steel, suitable for adhesive attachment, mechanical attachment, or welding attachment to duct without damaging liner when applied as recommended by manufacturer and without causing leakage in cabinet. c. Liner materials applied in this location shall have air-stream surface coated with a temperature-resistant coating or faced with a plain or coated fibrous mat or fabric depending on service air velocity. d. Liner Adhesive: Comply with ASTM C 916, Type I. B. Curb Height: 14 inches. 2.13 CAPACITIES AND CHARACTERISTICS A. Refer to Schedules at the end of this Section for capacities, characteristics, and additional basis of design criteria. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of RTUs. B. Examine roughing-in for RTUs to verify actual locations of piping and duct connections before equipment installation. C. Examine roofs for suitable conditions where RTUs will be installed. D. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION A. Roof Curb: Install on roof structure or concrete base, level and secure, according to NRCA's "Low-Slope Membrane Roofing Construction Details Manual," Illustration "Raised Curb Detail for Rooftop Air Handling Units and Ducts. Install RTUs on curbs and coordinate roof penetrations and flashing with roof construction specified in Division 7 Section "Roof Accessories." Secure RTUs to upper curb rail, and secure curb base to roof framing with anchor bolts. B. Install wind and seismic restraints according to manufacturer's written instructions. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-11
3.3 CONNECTIONS A. Install condensate drain, minimum connection size, with trap and indirect connection to nearest roof drain or area drain. B. Install piping adjacent to RTUs to allow service and maintenance. C. Duct installation requirements are specified in other Division 15 Sections. Drawings indicate the general arrangement of ducts. The following are specific connection requirements: 1. Install ducts to termination at top of roof curb. 2. Remove roof decking only as required for passage of ducts. Do not cut out decking under entire roof curb. 3. Connect supply ducts to RTUs with flexible duct connectors specified in Division 15 Section "Duct Accessories." 4. Install return-air duct continuously through roof structure. 3.4 FIELD QUALITY CONTROL A. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test, and adjust components, assemblies, and equipment installations, including connections. Report results in writing. 1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing. Report results in writing. B. Tests and Inspections: 1. After installing RTUs and after electrical circuitry has been energized, test units for compliance with requirements. 2. Inspect for and remove shipping bolts, blocks, and tie-down straps. 3. Operational Test: After electrical circuitry has been energized, start units to confirm proper motor rotation and unit operation. 4. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment. C. Remove and replace malfunctioning units and retest as specified above. 3.5 STARTUP SERVICE A. Engage a factory-authorized service representative to perform startup service. B. Complete installation and startup checks according to manufacturer's written instructions and do the following: 1. Inspect for visible damage to unit casing. 2. Inspect for visible damage to compressor, coils, and fans. 3. Inspect internal insulation. 4. Verify that labels are clearly visible. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-12
5. Verify that clearances have been provided for servicing. 6. Verify that controls are connected and operable. 7. Verify that filters are installed. 8. Clean condenser coil and inspect for construction debris. 9. Remove packing from vibration isolators. 10. Verify lubrication on fan and motor bearings. 11. Inspect fan-wheel rotation for movement in correct direction without vibration and binding. 12. Start unit according to manufacturer's written instructions. a. Start refrigeration system. b. Do not operate below recommended low-ambient temperature. c. Complete startup sheets and attach copy with Contractor's startup report. 13. Inspect and record performance of interlocks and protective devices; verify sequences. 14. Operate unit for an initial period as recommended or required by manufacturer. 15. Calibrate thermostats. 16. Adjust and inspect high-temperature limits. 17. Inspect outdoor-air dampers for proper stroke and interlock with return-air dampers. 18. Start refrigeration system and measure and record the following when ambient is a minimum of 15 deg F above return-air temperature: a. Coil leaving-air, dry- and wet-bulb temperatures. b. Coil entering-air, dry- and wet-bulb temperatures. c. Outdoor-air, dry-bulb temperature. d. Outdoor-air-coil, discharge-air, dry-bulb temperature. 19. Inspect controls for correct sequencing of heating, mixing dampers, refrigeration, and normal and emergency shutdown. 20. Measure and record the following minimum and maximum airflows. Plot fan volumes on fan curve. a. Supply-air volume. b. Return-air volume. c. Relief-air volume. d. Outdoor-air intake volume. 21. Simulate maximum cooling demand and inspect the following: a. Compressor refrigerant suction and hot-gas pressures. b. Short circuiting of air through condenser coil or from condenser fans to outdoor-air intake. 22. Verify operation of remote panel including pilot-light operation and failure modes. Inspect the following: a. Low-temperature safety operation. b. Filter high-pressure differential alarm. c. Firestat alarms. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-13
23. After startup and performance testing and prior to Substantial Completion, replace existing filters with new filters. 3.6 CLEANING AND ADJUSTING A. Occupancy Adjustments: When requested within 12 months of date of Substantial Completion, provide on-site assistance in adjusting system to suit actual occupied conditions. Provide up to two visits to site during other-than-normal occupancy hours for this purpose. B. After completing system installation and testing, adjusting, and balancing RTU and airdistribution systems, clean filter housings and install new filters. 3.7 DEMONSTRATION A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain RTUs. Refer to Division 1 Section "Demonstration and Training." 3.8 SCHEDULES A. Schedules: Refer to the following schedules for additional basis of design criteria. PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-14
BASIS OF DESIGN ROOFTOP UNITS SCHEDULE PLAN IDENTIFICATION: RTU-1 RTU-2 RTU-3 LOCATION: BALLROOM REST RNT #1, 2 RESTAURANT #3 TYPE/ARRANGEMENT: SC / DNFLW SC / DNFLW SC / DNFLW MANUFACTURER: AAON AAON AAON MOD. NO.: RN-025-8-0-EB19* RN-013-8-0-EB19* RN-007-8-0-EB19* AIR FLOW CFM / WG: 5881 @ 1.50 5037 @ 1.50 2196 @ 1.25 CAPACITY TONS: 25 15 7.5 TC / SC MBH: 315.4 / 154.66 161.85 / 124.31 76.33 / 53.62 LAT CAPACITY MBH: 160.74 37.54 22.82 EER: 11.6 12.2 11.2 ENT AIR TEMP DB / WB F: 77.40 / 70.30 77.00 / 64.90 77.70 / 66.40 LVG AIR TEMP DB / WB F: 52.81 / 52.61 54.02 / 53.82 54.73 / 54.66 EVAP COIL - SF / ROWS / FPI / FPM 19.9 / 6 / 12 / 296.1 14.6 / 6 / 12 / 345.4 8.5 / 6 / 14 / 258.1 OUTSIDE AIR CFM:: 590 479 249 REHEAT COIL CAP MBH: 128.0 97.0 43.0 LVG AIR DB / WB F: 73.0 / 60.48 71.89 / 60.69 73.00 / 61.57 Rh - %: 49 53 52 REFRIGERANT: R-410A R-410A R-410A SUPPLY FAN MOTOR BHP / HP - TYPE: 3.89 / 7.50 3.54 / 5.0 1.19 / 2.0 RPM / WHEEL WIDTH: 1307 / 24.5 1513 / 22.0 1979 / 15.0 REHEAT KW / MBH: 45.0 / 153.9 37.6 / 128.3 15.0 / 51.2 STAGES / FLA: 2 / 125.2 2 / 104.4 1 / 41.6 COMPRESSOR QTY: 2 2 1 CONDENSER FANS QTY: 3 1 1 UNIT - VOLTS/PHASE/Hz: 208/3/60 208/3/60 208/3/60 MCA/MOCP: 187 / 200 151 / 175 61 / 70 UNIT FLA: 149 121 49 WEIGHT POUNDS: 2734 1864 1148 ACCESSORIES/REMARKS: *COMPLETE AAON MODEL NUMBER: RTU-1 BALLRM: RN-025-8-0-EB19-162:L000-E0H-DDG-B00-CH0CHBE-00-00A0000AB RTU-2 RESTRNT 1, 2: RN-013-8-0-EB19-152:L000-E0H-DRF-B00-CH0CHBE-00-00A0000AB RTU-3 RESTRNT 3: RN-007-8-0-EB19-121:L000-E0H-DBD-B00-CD0AHBE-00-00A0000AB PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-15
BASIS OF DESIGN ROOFTOP UNITS SCHEDULE PLAN IDENTIFICATION: RTU-4 RTU-5 RTU-6 LOCATION: KITCHEN GIFT SHOP OUTSIDE AIR TYPE/ARRANGEMENT: SC / DNFLW SC / DNFLW SC / DNFLW MANUFACTURER: AAON AAON AAON MOD. NO.: RN-025-8-0-EB19* RM-A05-8-0-EB19* RN-020-8-0-EB19* AIR FLOW CFM / WG: 8140 @ 1.5 2273 @ 1.25 3000 @ 1.0 CAPACITY TONS: 25 5.0 20.0 TC / SC MBH: 309.78 / 222.19 63.16 / 56.05 239.99 / 125.02 LAT CAPACITY MBH: 87.59 7.11 114.96 EER: 11.6 13.0 12.0 ENT AIR TEMP DB / WB F: 77.3 / 65.0 76.40 / 63.00 92.00 / 77.00 LVG AIR TEMP DB / WB F: 51.82 / 51.62 53.28 / 53.20 51.77 / 51.57 EVAP COIL - SF / ROWS / FPI / FPM 19.9 / 6 / 12 / 409.8 4.7 / 6 / 12 / 481.3 19.9 / 6 / 12 151.0 OUTSIDE AIR CFM:: 778 120 3000 REHEAT COIL CAP MBH: 186.0 48.0 75.0 LVG AIR DB / WB F: 73.00 / 60.00 73.0 / 60.82 75.0 / 60.70 Rh - %: 47 50 44 REFRIGERANT: R-410A R-410A R-410A SUPPLY FAN MOTOR BHP / HP - TYPE: 6.38 / 10.0 1.57 / 2 1.17 / 2.0 RPM / WHEEL WIDTH: 1279 / 27.4 1992 / 15.0 865 / 27.4 REHEAT KW / MBH: 45.1 / 153.9 15.0 / 51.2 45.1 / 153.9 STAGES / FLA: 2 / 125.2 1 / 41.6 2 / 125.2 COMPRESSOR QTY: 2 1 2 CONDENSER FANS QTY: 3 1 1 UNIT - VOLTS/PHASE/Hz: 208/3/60 208/3/60 208/3/60 MCA/MOCP: 195 / 200 61 / 70 166 / 175 UNIT FLA: 156 49 133 WEIGHT POUNDS: 2741 851 2590 ACCESSORIES/REMARKS: *COMPLETE AAON MODEL NUMBER: RTU-4 KITCHEN: RN-025-8-0-EB19-162:L000-E0H-DEH-B00-CH0CHBE-00-00A0000AB RTU-5 GIFT SHOP : RM-A05-8-0-EB19-121:L000-E0H-0BD-BA0-CD0AHBE-00-00A0000AB RTU-6 OSA: RN-020-8-0-EB19-162:L00E-00H-DQP-B00-CH0CHBF-00-00A0000AB PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-16
BASIS OF DESIGN ROOFTOP UNITS SCHEDULE PLAN IDENTIFICATION: RTU-7 LOCATION: SKY LOUNGE TYPE/ARRANGEMENT: SC / DNFLW MANUFACTURER: AAON MOD. NO.: RN-008-8-0-FB19* AIR FLOW CFM / WG: 2552 @ 1.25 CAPACITY TONS: 7.5 TC / SC MBH: 99.76 / 67.77 LAT CAPACITY MBH: 32.00 EER: 10.7 ENT AIR TEMP DB / WB F: 78.60 / 66.80 LVG AIR TEMP DB / WB F: 53.57 / 53.52 EVAP COIL - SF / ROWS / FPI / FPM 8.5 / 6 / 14 / 300 OUTSIDE AIR CFM:: 500 REHEAT COIL CAP MBH: 54 LVG AIR DB / WB F: 73.00 / 60.99 Rh - %: 50 REFRIGERANT: R-410A SUPPLY FAN MOTOR BHP / HP - TYPE: 1.54 / 2.0 RPM / WHEEL WIDTH: 2157 / 15.0 REHEAT KW / MBH: 15.0 / 51.2 STAGES / FLA: 1 / 41.6 COMPRESSOR QTY: 1 CONDENSER FANS QTY: 1 UNIT - VOLTS/PHASE/Hz: 208/3/60 MCA/MOCP: 61 / 70 UNIT FLA: 49 WEIGHT POUNDS: 1149 ACCESSORIES/REMARKS: *COMPLETE AAON MODEL NUMBER: RTU-7 SKY LNGE: RN-008-8-0-FB19-121:L000-E0H-DBD-B00-CD0A0BE-00-00A0000AB PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-17
AAON MODEL NUMBER LEGEND R ROOF TOP UNIT N NINTH GENERATION 025 / 013 / 007 / 005 / 020 008 UNIT SIZE (NOMINAL TONS) 8 208 VOLTS / 3 PHASE / 60 Hz 0 STANDARD INTERIOR PROTECTION E / F REFRIGERANT STYLE 410A VARIABLE CAPACITY SCROLL COMPRESSOR (E: HIGH EFFICIENCY) (F: STANDARD EFFIC) B AIR-COOLED CONDENSER (B: 6-ROW EVAP COIL) 1 (1: POLYMER E-COATED EVAP & COND) 9 COOL STAGING: MODULATING 1 VARIABLE COMPRESSOR; 1 ON/OFF 162 / 152 /121 (162: HEATING: ELECTRIC HEAT; 1-45.1 kw; 2 STAGES) (152: ELECTRIC HEAT; 1-37.5 kw; 2 STAGES) (121: ELECTRIC HEAT; 1-15 kw; 1 STAGES) L MOTORIZED OA DAMPER + RA OPENING 000 RA/EA BLOWER: STANDARD: NONE E OA CONTROL: DDC ACTUATOR 0 HEAT OPTIONS: STANDARD H MAINTENANCE OPTIONS: 115V CONVENIENCE OUTLET D / 0 (D: 1 SA BLOWER + INVERTER RATED MOTOR + VFD) (0: 1 SA BLOWER + STANDARD EFFICIENCY MOTOR) D / R / B / E / Q (D: SA BLOWER: 24 DIRECT DRIVE, PLENUM) (R: SA BLOWER: 22 DIRECT DRIVE) (B: SA BLOWER: 15 DIRECT DRIVE) (E & Q: SA BLOWER: 27 DIRECT DRIVE) G / F / D / H / P (G: 7.5 HP 1760 RPM) (F: 5 HP 1760 RPM) (D: 2 HP 1760 RPM) (H: 10 HP 1760 RPM) (P: 2 HP 1170 RPM) B B: METAL MESH OA PRE-FILTER 0 / A 0 & A: 2 PLEATED FILTER, 30% EFF 0 FILTER OPTIONS: STANDARD C REFRIGERATION CONTROL: FAN CYCLING H / D (H: REFRIGERATION OPTIONS: HOT GAS BYPASS LAG & MODULATING HOT GAS REHEAT) (D: REFRIGERATION OPTIONS: MODULATING HOT GAS REHEAT) 0 REFRIGERATION ACCESSORIES: STANDARD C / A POWER OPTIONS: POWER SWITCH: (C: 225 A) (A: 100 A) H & 0 SAFETY OPTIONS: REMOTE SMOKE DETECTOR TERMINALS- FILED INSTALLED DETECTOR B CONSTROLS: PHASE & BROWN OUT PROTECTION E / B SPECIAL CONTROLS: (E: CONSTANT VOLUME UNIT CONTROLLER-CV COOL + CV HEAT) (B: MAKE UP AIR UNIT CONTROLLER-CV COOL + CV HEAT) 000 PREHEAT: NONE 0 / A INTERIOR CABINET OPTIONS: DOUBLE WALL + R-13 FOAM INSULATION & STAINLESS STEEL DRAIN PAN A EXTERIOR CABINET OPTIONS: BASE INSULATION 0000 STANDARD ETL USA LISTING A CONTROL VENDOR: WATTMASTER CONTROLS B TYPE: STANDARE AAON GRAY PAINT END OF SECTION 15732 PACKAGED, OUTDOOR, CENTRAL-STATION AIR-HANDLING UNITS 15732-18