HP A0554832 manual 20 hp, 25 hp, and 30 hp Air-Cooled Portable Chillers

Page 48

20 hp, 25 hp, and 30 hp Air-Cooled Portable Chillers

Nominal operating parameters for air-cooled models are 50ºF (10ºC) leaving water temperature at 2.4 gpm per ton (9.1 lpm per 3.517 kW) with 95ºF (35ºC) ambient air. For 50 Hz applications, multiply capacity by 0.83. Nominal 60 Hz capacity flow rate must be maintained.

	Nominal cooling			Water	Com-	Nom.			Power in amps e, 460/3/60 f
HP	capacity c tons			flow	pressor	pump	Discharge air		1 pump		2 pumps
	no pump	1 pump	2 pump	gpm d	hp	hp	openings	cfm g	rated	running	rated	running
20	19.4	18.4	18.0	46.5	2 @ 10	5	25” x 18.5”	10,200	48.3	42.0	51.4	45.1
25	23.9	22.8	22.4	57.2	2 @ 13	5	25” x 18.5”	13,300	62.1	48.3	65.2	51.4
30	29.2	28.2	27.8	70.2	2 @ 15	5	25” x 18.5”	18,150	74.1	64.4	77.2	67.5

cBased on 50ºF (10ºC) chilled water supply temperature and 95ºF (35ºC) ambient air. Optional additional process

pump hp reduces chiller capacity by 0.2 tons per hp (0.703 kW ref. cap. per 0.746 kW pump power).

dBased on 2.4 gpm per ton (9.1 lpm per 3.517 kW), nominal 1 pump.

eAn optional oversized process pump adds to the total rated or running chiller amperage. To find the new total chiller amperage, subtract the standard process pump amperage from the optional pump amperage (see Figure 1

on page 16), and add it to the chiller rated or running amperage.

fMultiply 460/3/60 amperage by 2.0 for 208-230/3/60 amperages; multiply by 0.8 for 575/3/60 amperages. g To convert cfm to cmh, multiply by 1.699.

20 hp, 25 hp, and 30 hp air-cooled portable chillers come standard with 4” (101 mm) swivel casters.

Com-

Process connections, in. NPT

Dimensions

Weights

HP

pressor

1 Pump

2 Pump

no pump,

1 pump, no

in inches c

Dry d

Ship. d

Oper. d e

hp

to/from

to/from

no tank

tank,

height

width

depth

lbs.

lbs.

lbs.

to/from

20

2 @ 10

2” / 3”

2.5” / 3”

2.0”

2” / 3”

91.4

34.0

100.7

2,305

2,605

2,971

25

2 @ 13

2” / 3”

2.5” / 3”

2.0”

2” / 3”

91.4

34.0

100.7

2,348

2,648

3,014

30

2 @ 15

2” / 3”

2.5” / 3”

2.0”

2” / 3”

91.4

34.0

100.7

2,610

2,910

3,276

cTo convert to cm, multiply by 2.54. Add to height dimension based on mounting options.

dWeight is for standard chiller. Some optional features will increase weight. Multiply lbs. by 0.454 to calculate Kg. e Operating weight is with a full 80-gallon (303 liter) reservoir tank of water.

2-40 HP Portable Chillers

Chapter 7: Appendix

48 of 78

Image 48

Contents Hp Portable Chillers Shipping Information Table of Contents Operation HP Portable Chillers Safety How to Use This ManualSafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves ResponsibilityFunctional Description Models Covered in This ManualGeneral Description Chilled Water CircuitRefrigeration Circuit Standard Features Mechanical FeaturesOther Mechanical Features Electrical Features Refrigeration FeaturesController Features Other FeaturesSafety Devices and Interlocks High/Low Thermostat ControlCrankcase Heater High Pressure CutoutOil Pressure Safety Switch Fan Cycling SwitchPressure Switch Flow SwitchOptional Features Mounting Features Optional Pump Amperages Voltage Construction Full Load Amps Installation UncratingElectrical Connections Process Water Connections Bypass Valve ConsiderationsGalvanic Corrosion Considerations Water Treatment ConsiderationsCondenser Considerations Water-Cooled Chiller CondensersAir-Cooled Chiller Condensers Remote Air-Cooled Chiller Condensers Page Equivalent Length in Feet for Valves and Fittings Chiller Condenser Charge Field Installed Piping Charge Refrigerant Charge DeterminationThree-Phase Compressors Checking Motor DirectionWater Pumps Condenser FanWater Reservoir Part Number DescriptionEthylene Glycol and Propylene Glycol Curves Automatic Water Make-Up Option Initial Start-Up Panel Buttons, Indicator Lights, and Switches E5CK Controller Indicator Name DescriptionOperation Microprocessor ControllersIndicator Name Description Sterlco 2000 Controller Indicator Name Description2000 See on Indicator Name Description Graphic PanelIndicator Name Description Typical Graphic Panels With E5CK Controller With Sterlco 2000 ControllerSetting the Process Water Temperatures Auto-TuningStart-up Optional CommunicationsThermostat Buttons Indicator Name Description Programming the Electronic High/Low ThermostatStage 2 High Temperature Protection Select Fahrenheit or CelsiusStage 1 Freeze Protection Maintenance Filter CleaningLubrication Maintaining the Condenser Maintaining the EvaporatorEvaporator Process Piping Y-Strainer Air- and Remote Air-Cooled ChillersPreventative Maintenance Service Troubleshooting HP Portable Chillers TroubleshootingHP Portable Chillers Troubleshooting Warranty AppendixService Department Technical AssistanceParts Department Sales DepartmentDrawings and Specifications Hp and 3 1/2 hp Air-Cooled Portable ChillersHp and 7.5 hp Air-Cooled Portable Chillers Hp and 15 hp Air-Cooled Portable Chillers 20 hp, 25 hp, and 30 hp Air-Cooled Portable Chillers Hp and 3.5 hp Water-Cooled Portable Chillers Nominal Condenser water Nominal cooling Water ComIn. NPT Height Width Depth Lbs Hp and 7.5 hp Water-Cooled Portable Chillers Hp and 15 hp Water-Cooled Portable Chillers 20 hp, 25 hp, and 30 hp Water-Cooled Portable Chillers Hp and 40 hp Water-Cooled Portable Chillers Nominal cooling Com Refrigeration Power in amps e Hp and 7.5 hp Remote Air-Cooled Portable Chillers12.8 17.3 748Hp and 15 hp Remote Air-Cooled Portable Chillers Nominal cooling Com RefrigerationPres Nom Connections 15.0 40.9 34.0 74.7Hp through 40 hp Remote Air-Cooled Portable Chillers To/from No tank Tank, to/from Height Width Depth LbsRemote Condenser Assembly Models ‘A’in ‘B’in ‘C’in ‘D’in ODSinPump Curves, Flow, and Pressure Considerations Hertz Pump CurvesDWG. No. S0554823 Water Pressure Drop Tables Calculating Chiller Nominal Flow and Pressure to ProcessRecirculation Pump Specifications Recirc. power Flow Rate ∆ pressure Gpm Lpm Psi KPaFlow and Pressure Considerations Remote Air-Cooled Chiller Configurations Configuration aConfiguration B Configuration C Typical Ductwork for Air-Cooled Chillers Piping Diagrams Central and Gravity Return Piping with Standpipe DiagramTypical Piping Schematic, 2 and 3 1/2 hp Models HP Portable Chillers Appendix HP Portable Chillers Appendix Typical Piping Schematic, 5 hp through 40 hp, No-Pump Models HP Portable Chillers Appendix Electrical Schematics Time-delay Relays Disconnect Switch OptionalTypical Electrical Subpanel Speed FusesTypical Electrical Schematic, 2 hp and 3 1/2 hp Models Typical Power Wiring Schematic, 5 hp through 40 hp Models A0554815HP Portable Chillers Appendix DWG A0554931 DWG A0562343 DWG A0562435 Typical Wiring Schematic, 35 hp and 40 hp Models with Pump DWG A0562434