Water-Cooled Scroll Process Chillers

As the name indicates, a water-cooled process chiller will reject process heat to another fluid-based medium. In most cases, heat rejection by water-cooled scroll process chillers will go to an outdoor evaporative cooling tower.

Legacy Chiller, Inc.’s model PZW water-cooled chiller system is available from 1 to 120 HP. These systems are very compact and light. Keep in mind that all water-cooled condenser process chillers require a way to reject their heat normally to another water source such as a cooling tower.

Available from 1 to 20 tons, with the PZWT’s unique dual-loop (recirculatory) flow technology, these chillers are ideal for mission-critical applications that require very stable approach temperatures within a 24/7/365 service environment.

The PZWT product line is also available with Legacy’s Patented Economizer Technology, capable of reducing energy usage (depending on the operating environment) by up to 60%. The PZWT system has been designed from the ground up to be the industry’s premier process chiller in its capacity class.

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Standard Features:

  • ETL listed to UL1995 and CAN/CSA C22.2 No. 236-11, 4th edition (10/14/2011)
  • Single-point power connection
  • Idec microprocessor controller with easy-to-use touch screen display
  • Stainless steel, brazed plate evaporator
  • Scroll compressor with crankcase heater
  • Suction accumulator
  • Water flow switch
  • Hot gas bypass capacity control
  • 24V control transformer
  • Control circuit fusing
  • Condenser(s): coaxial up to PZW22D
  • Condenser(s): shell and tube PZW26D through PZW52D
  • Compressor motor contactor
  • Painted - powder-coated (most models), galvanized sheet metal cabinet
  • 1/2" insulation on all water and refrigerant lines
  • Liquid line drier, sight glass, solenoid, TXV
  • Complete refrigerant charge from the factory
  • Extended warranty: See your quote or latest IOM booklet revision

[1] denotes optional items on most competing brands.

Tank Models Only:

  • Stainless steel storage tank with ½-inch insulation
  • Fused, stainless steel recirculation pump for tank operation with ball valve and cleanable strainer
  • Tank pressure relief valve, vent, and drain hose bibs

Options:

  • Remote Idec touch screen control panel
  • Industrial VPN router
  • 5-port ethernet switch
  • BACnet gateway
  • Process pump VFD controller
  • 4-year extended compressor warranty
  • Casters (factory mounted)
  • Condenser water regulating valve
  • 115-volt (rain-tight) service outlet
  • Non-fused disconnect
  • Phase monitor, line voltage monitor offering protection against phase loss/reversal, unbalance, and hi/lo voltage
  • Compressor fusing
  • Compressor sound cover
  • Factory-installed evaporator heat tape freeze protection
  • Low-flow bypass valve
  • Fused, stainless steel process pump
  • Dual system pump with manual change-over (some models)
  • Dual system pump with auto change-over (some models)
  • Pump suction isolation valve
  • Water pressure gauge set
  • Water flow meter
  • Auto city water change-over panel with filter
  • Stainless steel, SCH80 PVC or polypropylene piping for deionized and reverse osmosis water systems
  • Storage tank sight glass (tank models only)
  • Tank low liquid level indicator with dry contacts (tank models only)

Click on a chiller model below to download a spec sheet.

R454C

Water-Cooled Process Chillers, Packaged, Single & Dual Circuit Scroll, Tankless

Model Number Nominal BTUH @ 45°F Length (In.) Width (In.) Height (In.) Weight Compressor
Qty. HP
PZW1S 12,100 36 34 36 210 1 1.0
PZW2S 24,500 36 34 36 215 1 2.0
PZW3S 36,600 36 34 36 340 1 3.0
PZW3.5S 42,400 36 34 36 360 1 3.5
PZW4.5S 53,400 46 34 36 400 1 4.5
PZW5S 59,900 46 34 36 425 1 5.0
PZW5.5S 63,600 46 34 36 450 1 5.5
PZW6.5S 80,000 46 34 36 525 1 6.5
PZW7.5S 91,300 46 34 36 585 1 7.5
PZW9S 110,500 46 34 36 600 1 9.0
PZW11S 136,500 46 34 36 725 1 11.0
PZW12.5S 155,000 46 34 36 825 1 12.5
PZW7D 84,800 65 34 36 725 2 3.5
PZW9D 106,800 65 34 36 750 2 4.5
PZW10D 119,800 65 34 36 775 2 5.0
PZW11D 127,200 65 34 36 800 2 5.5
PZW13D 160,000 75 34 36 900 2 6.5
PZW15D 182,600 75 34 36 965 2 7.5
PZW18D 221,000 75 34 36 975 2 9.0
PZW22D 273,000 75 34 36 1950 2 11.0
PZW25D 310,000 85 34 59 2000 2 12.5

Water-Cooled Process Chillers, Packaged, Single & Dual Circuit Scroll, with Stainless Steel Tank

Model Number Nominal BTUH @ 45°F Length (In.) Width (In.) Height (In.) Weight Compressor
Qty. HP
PZWT1S 11,350 36 34 65 450 1 1.0
PZWT2S 23,000 36 34 65 550 1 2.0
PZWT3S 34,400 36 34 65 650 1 3.0
PZWT3.5S 39,800 36 34 65 675 1 3.5
PZWT4.5S 50,200 46 34 68.5 700 1 4.5
PZWT5S 56,200 46 34 68.5 725 1 5.0
PZWT5.5S 59,700 46 34 68.5 775 1 5.5
PZWT6.55S 75,200 46 34 68.5 850 1 6.5
PZWT7.5S 85,800 75 34 70 1000 1 7.5
PZWT9S 103,500 75 34 70 1050 1 9.0
PZWT11S 128,000 75 34 70 1200 1 11.0
PZWT12.5S 146,000 75 34 70 1300 1 12.5
PZWT7D 79,600 75 34 70 1000 2 3.5
PZWT9D 100,400 75 34 70 1100 2 4.5
PZWT10D 112,400 75 34 70 1200 2 5.0
PZWT11D 119,400 75 34 70 1250 2 5.5
PZWT13D 150,400 85 34 70 1300 2 6.5
PZWT15D 171,600 85 34 70 1400 2 7.5
PZWT18D 207,000 85 34 70 1450 2 9.0
PZWT22D 256,000 85 34 70 1600 2 11.0

Note: Water-cooled process chiller capacities are based on ARI Standard 45ºF LWT and 105ºF condensing temperature.

For more information, call us toll-free at (877) 988-5464.

R407C

Water-Cooled Process Chillers, Packaged, Single Circuit Scroll, Tankless

Model Number Nominal BTUH @ 45°F Length (In.) Width (In.) Height (In.) Weight Compressor
Qty. HP
PZW1S13,50036343621011.3
PZW1.5S22,50036343621512.0
PZW2S25,40036343621512.5
PZW2.5S37,90036343624513.5
PZW3S42,40036343634014.0
PZW4S54,50036343642515.0
PZW4.5S56,50036343642516.0
PZW5S66,40036343645017.0
PZW7S86,50036343652518.0
PZW8S98,00036343658519.0
PZW9S115,000463436600110.0
PZW11S139,500463436725112.0

Water-Cooled Process Chillers, Packaged, Single Circuit Scroll, with Stainless Steel Tank

Model Number Nominal BTUH @ 45°F Length (In.) Width (In.) Height (In.) Weight Compressor
Qty. HP
PZWT1S14,00036346545011.3
PZWT1.5S18,00036346550012.0
PZWT2S22,00036346555012.5
PZWT2.5S28,80036346560013.5
PZWT3S36,00036346565014.0
PZWT4S49,200463468.570015.0
PZWT4.5S51,600463468.572515.0
PZWT5S55,200463468.572516.0
PZWT7S75,600463468.585018.0
PZWT8S84,000753470100019.0
PZWT9S98,4007534701050110.0
PZWT11S122,4007534701200112.0

Water-Cooled Process Chillers, Packaged, Dual Circuit Scroll, Tankless

Model Number Nominal BTUH @ 45°F Length (In.) Width (In.) Height (In.) Weight Compressor
Qty. HP
PZW7D84,80065343672524.0
PZW9D109,00065343675025.0
PZW9.5D113,00065343677526.0
PZW10D132,80065343680028.0
PZW13D173,00075343690029.0
PZW15D196,000753436965210.0
PZW18D230,000753436975212.0
PZW22D279,0008534541000212.0
PZW26D327,0008534541950215.0
PZW35D442,0008534542200220.0
PZW43D534,00010234542350225.0
PZW52D674,00010234542500230.0

Water-Cooled Process Chillers, Packaged, Dual Circuit Scroll, with Stainless Steel Tank

Model Number Nominal BTUH @ 45°F Length (In.) Width (In.) Height (In.) Weight Compressor
Qty. HP
PZWT7D 73,200753470100024.0
PZWT9D 96,000753470110025.0
PZWT9.5D 102,000753470120025.0
PZWT10D 108,000753470125026.0
PZWT13D 147,000753470130028.0
PZWT15D 167,000853470140029.0
PZWT18D 190,8008534701600210.0
PZWT22D 240,2008534702100212.0

Note: Water-cooled process chiller capacities are based on ARI Standard 45ºF LWT and 105ºF condensing temperature.

For more information, call us toll-free at (877) 988-5464.

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