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.

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

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
  • 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 43,200 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 6.5
PZW7S 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
PZW12S 162,500 46 34 36 825 1 12.5
PZW7D 86,400 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 85 34 59 1950 2 11.0
PZW25D 325,000 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
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

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.

Ask about our process chillers.

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