McQuay AGR 070A Product Manual
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McQuay AGR 070A Product Manual

Air-cooled reciprocating chiller, packaged chiller, remote evaporator, 70 to 100 tons, 245 to 350 kw, r-22, r-134a, 60 hertz
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Product Manual
PM AGR-3
Air-Cooled Reciprocating Chiller
AGR 070AS - 100AS, Packaged Chiller
AGR 070AM – 100AM, Remote Evaporator
70 to 100 Tons, 245 to 350 kW
R-22, R-134a
60 Hertz

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Summary of Contents for McQuay AGR 070A

  • Page 1 Product Manual PM AGR-3 Air-Cooled Reciprocating Chiller AGR 070AS - 100AS, Packaged Chiller AGR 070AM – 100AM, Remote Evaporator 70 to 100 Tons, 245 to 350 kW R-22, R-134a 60 Hertz...

  • Page 2: Table Of Contents

    "McQuay" is a registered trademark of McQuay International  2001 McQuay International "Illustrations and data cover the McQuay International products at the time of publication and we reserve the right to make changes in design and construction at anytime without notice" AGR 070A through 100A...

  • Page 3: Introduction

    Introduction McQuay offers air-cooled chillers from 10 through 425 tons (35 - 1500 kW). This manual covers two varieties of the reciprocating compressor, air-cooled Global Chiller Line: AGR 070 AS - AGR 100AS, Packaged Air-Cooled Chillers, R-22 and R-134a AGR 070AM - AGR 100AM, Air-Cooled with Remote Evaporator, R-22 only...

  • Page 4: Design Advantages

    Condenser coils have internally enhanced seamless copper tubes arranged in a staggered row pattern. The coils are mechanically expanded into McQuay lanced and rippled aluminum fins with full fin collars. An integral subcooler circuit provides subcooling to greatly reduce the possibility of liquid line flashing.
  • Page 5 On Model AGR  AM units the evaporator is shipped separate for field mounting and piping to the outdoor unit. The refrigerant specialties shown in Figure 1 (dotted lines) must be purchased from McQuay with the unit and installed by the installing contractor.
  • Page 6 The UNT control is used only with R-22. Thirty feet of sensor cable is included, rolled up in the control panel, on remote evaporator models. Figure 2, Standard Global UNT Controller AGR 070A through 100A Product Manual AGR-3...
  • Page 7 Cir #1 Starts Stage 5 Opt. Cir #2 Starts Stage 6 Opt. Mode Operating Mode Indicator Selector ALARM Button MONITOR Alarm Light ADJUST TIME SCHEDULE Mode PASSWORD Selector ENTER Up/Down Arrow Keys Panel Door AGZ-AGR Product Manual AGR-3 AGR 070A through 100A...
  • Page 8 MicroTech Control (optional on R-22, standard on R-134a) Exclusive microprocessor control is common throughout McQuay equipment. The interface is a 12 key keypad and 2-line, 40 character backlit liquid crystal display. The MicroTech continuously performs self-diagnostic checks on all system temperatures, pressures, and equipment protection controls, and will automatically shut down a circuit or the entire unit at fault conditions.

  • Page 9: Selection Procedure

    AGR 070AS line intersect. Read horizontally to obtain an evaporator pressure drop of 15.5 feet. The pressure drop for 40% glycol solution = 1.263 X 15.5 feet = 19.6 feet of water. Product Manual AGR-3 AGR 070A through 100A...
  • Page 10 Table 2 for propylene glycol adjustment factors. Ratings are based on a 0.0176 fouling factor in the evaporator at sea level operation. For other fouling factors, different Delta-Ts, or altitude correction factors, see Table 3. For applications outside the catalog ratings contact your local McQuay sales representative.
  • Page 11 For other fouling factors, derates for different delta-Ts, or altitude correction factors, see Table 3. For applications outside the catalog ratings contact your local McQuay sales representative. The length and configuration of the interconnecting refrigerant piping will affect the system capacity.
  • Page 12 Select the AGR 070AM and correct with 40% ethylene glycol factors and piping correction factor. Correct capacity = 0.961 X 67.5 tons = 64.6 tons Correct compressor kW = 0.976 X 77.1 = 75.2 kW AGR 070A through 100A Product Manual AGR-3...

  • Page 13: Application Adjustment Factors

    1.010 1.068 0.975 0.985 1.028 1.147 0.962 0.978 1.050 1.248 0.946 0.971 1.078 1.366 0.929 0.965 1.116 1.481 NOTE: Ethylene and propylene glycol ratings are outside the scope of Standard 550/590-98 certification program Product Manual AGR-3 AGR 070A through 100A...
  • Page 14 2 1/8 2 5/8 3 1/8 Elbows 90° Standard 90° Long Radius 90° Street 45° Standard 45° Street 180° Bend Tees Full Size Reducing Valves Globe Valve, Open Gate Valve, Open Angle Valve, Open AGR 070A through 100A Product Manual AGR-3...
  • Page 15 0.978 0.973 0.967 080AM 0.961 0.978 0.971 0.963 0.957 085AM 0.982 0.974 0.966 0.957 0.978 090AM 0.979 0.968 0.957 0.978 0.974 095AM 0.979 0.968 0.957 0.978 0.974 100AM 0.976 0.964 0.980 0.975 0.971 Product Manual AGR-3 AGR 070A through 100A...

  • Page 16: Performance Data

    For 208V units, multiply capacity and EER by 0.98 For units with SpeedTrol option, multiply capacity and EER by 0.98 Operation below 42°F requires glycol and performance adjustment. Ratings can be interpolated but not extrapolated. AGR 070A through 100A Product Manual AGR-3...
  • Page 17 Ratings based on HCFC-22, evaporator fouling of 0.00176, 0.048 l/s per kW, and sea level altitude. Remote evaporator units (AM) are outside ARI scope. Interpolation is allowed; extrapolation is not permitted. Consult McQuay for performance outside the cataloged ratings. kWi input is for compressors only. EER is for the entire unit, including compressors, fan motors and control power.

  • Page 18: Part Load Data

    50.00 46.9 39.2 14.3 25.00 23.4 16.5 17.0 100.00 102.8 128.5 75.00 77.1 79.3 11.7 100AS 13.2 50.00 51.4 43.9 14.0 25.00 25.7 19.3 16.0 Notes: Certified in accordance with ARI Standard 550/590-98. AGR 070A through 100A Product Manual AGR-3...

  • Page 19: Sound Data

    Sound levels are as important as unit cost and efficiency, and must be addressed before to the start of any development program. Efforts by McQuay design engineers to design chillers that are sensitive to the sound requirements of the market have paid off.
  • Page 20 Distance from Sound Source Pressure at Referenced Distance ft. (m) 30 (9) 27.1 24.0 50 (15) 31.6 28.5 75 (23) 35.1 32.0 100 (30) 37.6 34.5 150 (46) 41.1 38.0 200 (61) 43.6 40.5 AGR 070A through 100A Product Manual AGR-3...
  • Page 21 The sound pressure level will decrease 1 dBA for ambient temperatures between 85°F to 94°F (29.4°C to 34.4°C), 2 dBA for ambient temperatures between 75°F to 84°F (23.9°C to 28.9°C), and 3 dBA for ambient temperatures between 65°F to 74°F (18.3°C to 23.3°C). Product Manual AGR-3 AGR 070A through 100A...

  • Page 22: Pressure Drop Curves

    Note: Minimum and maximum flows are established to ensure the Delta-T for each unit size falls within the 6 - 16°F range for proper unit control. Contact factory for unit operation outside of minimum and maximum flows shown. AGR 070A through 100A Product Manual AGR-3...

  • Page 23: Electrical Data

    2.50 085AM 2.00 2.00 2.00 2.00 090AS 2.50 090AM 2.00 2.00 2.00 2.00 095AS 2.50 095AM 2.00 2.00 2.00 2.00 100AS 2.50 100AM 2.00 2.00 All Electrical Data notes are on page 26. Product Manual AGR-3 AGR 070A through 100A...
  • Page 24 30.5 N.A. N.A. 27.6 N.A. N.A. 100AS 20.0 100AM 13.8 11.0 Notes: Part winding start is a special option on 380 – 575 volt units. All Electrical Data notes are on page 26. AGR 070A through 100A Product Manual AGR-3...
  • Page 25 # 4 - 400 MCM 250 - 500 MCM 100AM # 4 - 400 MCM #4 - 350 MCM # 4 - 400 MCM #4 - 350 MCM All Electrical Data notes are on page 26. Product Manual AGR-3 AGR 070A through 100A...
  • Page 26 #1 power terminal block. All field wiring to unit power block or optional non-fused disconnect switch must be copper. All field wire size values given in table apply to 75°C rated wire per NEC. AGR 070A through 100A Product Manual AGR-3...
  • Page 27 Figure 10, Typical Field Wiring with MicroTech Controller See Note 3 for “Electrical Data Single Point Power” on page 26 Product Manual AGR-3 AGR 070A through 100A...
  • Page 28 Figure 11, Typical Field Wiring Diagram with UNT Controller See note 3 for “Electrical Data Single Point Power” on page 26 AGR 070A through 100A Product Manual AGR-3...

  • Page 29: Physical Data

    .375 (9.5) .375 (9.5) .375 (9.5) Vent - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5) NOTE: Nominal capacity based on 95°F ambient air and 54°F/44°F water range, R-22. Product Manual AGR-3 AGR 070A through 100A...
  • Page 30 Drain - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) Vent - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) NOTE: Nominal capacity based on 95°F ambient air and 54°F/44°F water range. AGR 070A through 100A Product Manual AGR-3...
  • Page 31 Vent - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) .375 (9.5) NOTES: Includes evaporator. Does not include suction and liquid line charge. Outdoor unit and evaporator are shipped with R-22 holding charge. Product Manual AGR-3 AGR 070A through 100A...
  • Page 32 Vent - NPT int, In. (mm) .375 (9.5) .375 (9.5) .375 (9.5) NOTES: Includes evaporator. Does not include suction and liquid line charge. Outdoor unit and evaporator are shipped with R-22 holding charge. AGR 070A through 100A Product Manual AGR-3...

  • Page 33: Dimensional Data

    Copper Fin Coils lb (kg) Number lb (kg) lb (kg) 96.2 91.7 60.0 23.9 16.0 45.0 41.8 38.8 4755 4650 070AS (2444) (2329) (1525) (607) (108) (406) (1143) (1062) (986) (2155) (2107) (375) Product Manual AGR-3 AGR 070A through 100A...
  • Page 34 (2444) (2520) (1148) (96) (444) (1534) (1067) (899) (2810) (2730) (565) 96.2 99.2 45.2 17.5 60.4 42.0 35.4 6195 6020 1245 100AS (2444) (2520) (1148) (96) (444) (1534) (1067) (899) (2810) (2730) (565) AGR 070A through 100A Product Manual AGR-3...
  • Page 35 SUCTION LIQUID inch (mm) lb (kgs) COPPER FIN CONN. CONN. MODEL NUMBER OPERATING SHIPPING lb (kgs) 070AM 44.0 (1118) 37.5 (953) 43.0 (1092) 4090 (1855) 3980 (1805) 830 (375) 2 1/8 1 1/8 Product Manual AGR-3 AGR 070A through 100A...
  • Page 36 59.8 (1519) 37.3 (947) 39.3 (998) 5234 (2374) 5070 (2300) 1245 (565) 2 5/8 1 1/8 100AM 59.8 (1519) 37.3 (947) 39.3 (998) 5238 (2376) 5070 (2300) 1245 (565) 2 5/8 1 1/8 AGR 070A through 100A Product Manual AGR-3...
  • Page 37 16.0 (406 14.0 (356) CDE-1255-1 3.0 (76) 68.0 (1727) 70.0 (1778) 1.8 (45) 2.8 (71) 16.0 (406) 14.0 (356) CDE-1455-1 3.0 (76) 68.0 (1727) 70.0 (1778) 1.8 (45) 2.8 (71) 17.6 (447) 14.0 (356) Product Manual AGR-3 AGR 070A through 100A...

  • Page 38: Application Data

    Reduce structurally transmitted sound by isolating water lines, electrical conduit and the unit itself. Use wall sleeves and rubber isolated piping hangers to reduce transmission of water or pump noise into occupied spaces. Use flexible AGR 070A through 100A Product Manual AGR-3...
  • Page 39 The thermostat sensor is factory mounted in the leaving water thermowell on AS units. If an optional high return water sensor is provided, install sensor bulb in a field supplied tee or strap to the outside of the water line. Figure 18, Typical Chilled Water Piping Product Manual AGR-3 AGR 070A through 100A...
  • Page 40 The water volume in the system and the size of the piping loop is a critical consideration. Good engineering practice is to have a minimum water volume of eight times the AGR 070A through 100A Product Manual AGR-3...
  • Page 41 A similar problem to a lesser extent occurs when the equipment is oversized for the available cooling load. Product Manual AGR-3 AGR 070A through 100A...
  • Page 42 SUCTION LINES McQuay recommends the use of ASHRAE for guidelines in sizing and routing piping with one exception. See the current ASHRAE Handbook Refrigeration Edition, Chapter 2 for tables and guidelines.
  • Page 43 LONG VERTICAL RISER INSTALLATION Where job conditions require refrigerant gas lifts of more than 25 feet, McQuay recommends the installation of a short trap half-way up the riser or at not more than 20 feet intervals. These traps are required to capture and hold small quantities of oil during off cycles.
  • Page 44 Note: If the interconnecting piping described above contains a Seasontrol back-flooding type head pressure control valve representing a restriction in the liquid line, a separate vent from the top of the receiver to the discharge line entering the condenser is required. AGR 070A through 100A Product Manual AGR-3...
  • Page 45 AGR 080AM C-969 E25S290 SA-19S OVE-55 AGR 085AM #1 & #2 C-969 E25S290 SA-19S OVE-55 C-969 E25S290 SA-19S OVE-55 AGR 095AM C-969 E25S290 SA-19S OVE-55 AGR 100AM #1 & #2 C-969 E25S290 SA-19S OVE-55 Product Manual AGR-3 AGR 070A through 100A...

  • Page 46: Optional Features

    The system is protected by a simple password scheme allowing access to authorized personnel. A valid password must be entered before any set points can be changed. AGR 070A through 100A Product Manual AGR-3...
  • Page 47 Factory installed double insulation (1 ½ inch total) on evaporator barrel. Hail/Wind Guard Field installed sheet metal guards to protect the unit coils from hail damage and to provide more stable operation at low ambient temperatures by decreasing discharge pressure instability from wind. Product Manual AGR-3 AGR 070A through 100A...

  • Page 48: Product Specification, Agr-As

    Qualifications: Equipment manufacturer must specialize in the manufacture of the products specified and have five years experience with the equipment and refrigerant offered. Regulatory Requirements: Comply with the codes and standards specified. Chiller manufacturer plant must be ISO9002 Registered. AGR 070A through 100A Product Manual AGR-3...
  • Page 49 Sound data shall be provided with the quotation and be measured at 30 feet from the unit and one meter above the unit base line Octave Band 1000 2000 4000 8000 _____ ____ ____ ____ ____ ____ ____ ____ ____ Product Manual AGR-3 AGR 070A through 100A...
  • Page 50 (TEAO) type. Speed controlled fan motors shall be single-phase. Refrigerant Circuit: The refrigerant circuit shall include a liquid line shutoff valve, refrigerant filter-drier, sight glass with moisture indicator, liquid line solenoid valve (no exceptions), thermal expansion valve, and insulated suction line. AGR 070A through 100A Product Manual AGR-3...
  • Page 51 40°F (4.4°C). - OR - The refrigerant discharge pressure shall be controlled by a SpeedTrol control employing both fan cycling and fan speed control and allow operation to 0°F (-18°C). Product Manual AGR-3 AGR 070A through 100A...
  • Page 52 Provide all appurtenances required to ensure a fully operational and functional chiller. 3.02 START-UP Ensure proper charge of refrigerant and oil. Provide testing, and starting of machine, and instruct the Owner in its proper operation and maintenance. AGR 070A through 100A Product Manual AGR-3...

  • Page 53: Product Specification, Agr-Am

    Qualifications: Equipment manufacturer must specialize in the manufacture of the products specified and have five years experience with the equipment and refrigerant offered. Regulatory Requirements: Comply with the codes and standards specified. Chiller manufacturer plant must be ISO9002 Registered. Product Manual AGR-3 AGR 070A through 100A...
  • Page 54 Sound data shall be provided with the quotation and be measured at 30 feet from the unit and one meter above the unit base line. Octave Band 1000 2000 4000 8000 ____ ____ _____ _____ _____ ____ ____ ____ ____ AGR 070A through 100A Product Manual AGR-3...
  • Page 55 (no exceptions) and thermal expansion valve provided by the manufacturer. The suction line shall be insulated.. Product Manual AGR-3 AGR 070A through 100A...
  • Page 56 40°F (4.4°C). - OR - The refrigerant discharge pressure shall be controlled by a SpeedTrol control employing both fan cycling and fan speed control and allow operation to 0°F (-18°C). AGR 070A through 100A Product Manual AGR-3...
  • Page 57 Provide all appurtenances required to ensure a fully operational and functional chiller system. 3.02 START-UP Leak test, evacuate and charge system with proper charge of refrigerant and oil. Provide testing, and starting of machine, and instruct the Owner in its proper operation and maintenance. Product Manual AGR-3 AGR 070A through 100A...
  • Page 58 AGR 070A through 100A Product Manual AGR-3...
  • Page 59 Product Manual AGR-3 AGR 070A through 100A...
  • Page 60 Post Office Box 2510, Staunton, Virginia 24402-2510 USA • (800) 432-1342 • www.mcquay.com...

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