A2L Water-Cooled Scroll Process Chillers

Group of Water Cooled Scroll Chillers varying in size, tonnage, and cooling capacity

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 25 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 30 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.

Now offered in A2L refrigerant options R454C and R454A, these modern chillers are both cost effective and meet new environmental regulations. The low toxicty and low flammability refrigerants in Legacy’s process chillers are perfect for your cooling application’s future.

Standard Features:

  • Conforms to UL 60335-2-40:2022 Ed.4
  • UL 60335-1:2016 Ed.6
  • CSA C22.2 # 60335-1:2016 Ed.2
  • CSA C22.2 # 60335-2-40:2022 Ed.4
  • 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
  • Manual high pressure cutout
  • Electronic expansion valve
  • Hot gas bypass capacity control
  • 24V control transformer
  • Control circuit fusing
  • Condenser(s): coaxial up to PZW21D
  • Condenser(s): shell and tube on units larger than 21D
  • 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
  • Complete refrigerant charge from the factory
  • Extended warranty: See your quote or latest IOM booklet revision

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

A2L 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
PZW6S 80,000 46 34 36 525 1 6.0
PZW7S 91,300 46 34 36 585 1 7.0
PZW9S 110,500 46 34 36 600 1 9.0
PZW11S 136,500 46 34 36 725 1 11.0
PZW12S 155,000 46 34 36 825 1 12.0
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

A2L 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
PZWT6S 75,200 46 34 68.5 850 1 6.0
PZWT7S 85,800 75 34 70 1000 1 7.0
PZWT9S 103,500 75 34 70 1050 1 9.0
PZWT11S 128,000 75 34 70 1200 1 11.0
PZWT12S 146,000 75 34 70 1300 1 12.0
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
PZWT25D 306,000 85 34 70 1600 2 12.5

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.

R454A

A2L 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 14,000 36 34 36 210 1 1.0
PZW2.5S28,400 36 34 36 215 1 2.5
PZW3.5S 42,400 36 34 36 340 1 3.5
PZW4S37,900 36 34 36 360 1 4.0
PZW5S 61,500 46 34 36 400 1 5.0
PZW5.5S 69,100 46 34 36 425 1 5.5
PZW6S 73,400 46 34 36 450 1 6.0
PZW7S 95,700 46 34 36 525 1 7.0
PZW8S 106,000 46 34 36 585 1 8.0
PZW10S 127,000 46 34 36 600 1 10.0
PZW12S 115,000 46 34 36 725 1 12.0
PZW15S 188,500 46 34 36 825 1 15.0
PZW8D 99,800 65 34 36 725 2 4.0
PZW10D 123,000 65 34 36 750 2 5.0
PZW11D 138,200 65 34 36 775 2 5.5
PZW12D 146,800 65 34 36 800 2 6.0
PZW15D 191,400 75 34 36 900 2 7.5
PZW17D 212,000 75 34 36 965 2 8.5
PZW21D 255,000 75 34 36 975 2 10.5
PZW25D 315,000 85 34 59 1850 2 12.5
PZW30D 377,000 85 34 59 1950 2 15.0

A2L 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 13,150 36 34 65 450 1 1.0
PZWT2.5S26,700 36 34 65 550 1 2.5
PZWT3.5S 39,800 36 34 65 650 1 3.5
PZWT4S46,900 36 34 65 675 1 4.0
PZWT5S 57,900 46 34 68.5 700 1 5.0
PZWT5.5S 64,900 46 34 68.5 725 1 5.5
PZWT6S 69,000 46 34 68.5 775 1 6.0
PZWT7S 90,000 46 34 68.5 850 1 7.0
PZWT8S 99,600 75 34 70 1000 1 8.0
PZWT10S 120,000 75 34 70 1050 1 10.0
PZWT12S 148,000 75 34 70 1200 1 12.0
PZWT15S 177,500 75 34 70 1300 1 15.0
PZWT8D 93,800 75 34 70 1000 2 4.0
PZWT10D 115,800 75 34 70 1100 2 5.0
PZWT11D 129,800 75 34 70 1200 2 5.5
PZWT12D 138,000 75 34 70 1250 2 6.0
PZWT15D 180,000 85 34 70 1300 2 7.5
PZW17D 199,200 85 34 70 1400 2 8.5
PZW21D 240,000 85 34 70 1450 2 10.5
PZW25D 296,000 85 34 70 1600 2 12.5

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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Frequently asked questions about A2L Water-cooled process chillers

A water-cooled chiller is a highly efficient sytem that removes heat from a process. It uses an an external water system to absorb heat from the condensers and cycle it through a loop.

A2L Water-cooled chillers are used for their high efficiency, quiet operating noise, located indoors, and for their pinpoint temperature control. Water-cooled chillers will be more efficient than air-cooled units.

Primarily used for:

  • Industrial (Large scale cooling)
  • Medical (MRI chillers)
  • Mission critital situations
  • Cooling in hot climate conditions

With over 20 years of experience, our units have been fine tuned to be reliable, cost efficient, and well suited for a variety of uses. Our A2L water-cooled process chillers are fully customizable to fit your mission critical cooling applications.