Hussmann 4280 Series Installation & Operation Manual

Glycol pump station medium temperature secondary glycol refrigeration systems

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MANUAL- I/O PUMP STATION

Glycol Pump Station

Electrical

Control Panel

Glycol Pumps

Medium Temperature

Secondary Glycol

Refrigeration Systems

PUMP STATION 250,

Operation Manual

300 & 350 GPM

CUSTOMER DRG.

2H18850001 A

Fill Tank

Air Separator

Drain Pan

Installation &

P/N 1H24556001_E

August 2018

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Page 1 Glycol Pump Station Medium Temperature Secondary Glycol Refrigeration Systems Fill Tank Electrical Control Panel Air Separator Glycol Pumps Drain Pan Installation & PUMP STATION 250, Operation Manual 300 & 350 GPM CUSTOMER DRG. 2H18850001 A P/N 1H24556001_E SCAN CODE TO SEE August 2018 LATEST MANUAL ONLINE...
Page 2 Pump Station Frame Dimensions and Weights TABLE 1-0a: SYSTEM FRAME SIZES AND WEIGHT August 31, 2018 This warning does not mean that Hussmann products will cause cancer or reproductive harm, or is in violation of any product-safety standards or requirements. As clarified by the California State government, Proposition 65 can be considered more of a ‘right to know’...
Page 3 GLOSSARY Refrigerant: A fluid used to freeze or chill (as food) for preservation. Primary Refrigerant: A fluid such as R404A used in a vapor compression system to cool a secondary coolant. Secondary Coolant (Refrigerant): A fluid such as Propylene Glycol used to remove heat from cases and unit coolers and transfer the heat to the primary refrigerant through a heat exchanger.
Page 4: Section 1: Installation
For detailed information regarding a specific component or application, contact your Hussmann representative. Pump Stations may be installed without the use of vibration pads. The pump station may also be anchored due to seismic concerns or if specified by the building engineer.
Page 5: Section 2: Piping Guidelines
SECTION 2: PIPING GUIDELINES Piping Materials Any piping material that meets all pressure and temperature ratings, material compatibility requirements and state and local building codes may be used for medium temperature applications. Connections to the rack and pump station are copper as a standard. If the other materials are used, adapters would need to be ordered separately.
Page 6: Air Vent Valves
Pipe Connections Connecting Plastic With Metal Pipe DO NOT THREAD PLASTIC PIPE. A compression type fitting should be used. For larger pipe sizes, a flanged connection may be used. Air Vent Valves Manual air vent valves are recommended. Air vent valves should be located at piping high points where air will tend to collect.
Page 7: Pipe Supports
Pipe Supports Suggested spacing for pipe supports is shown below. Verify state and local building codes for required support. Piping should be supported in a manner that minimizes heat transfer to the supports. Nominal Pipe Size Distance between supports Distance between supports (in) (ft) (ft)
Page 8: Expansion Loops
Adjust valves per manufacturer’s recommendations. NOTE: All valves are available from Hussmann. Closed Loop Air Separator Air separators are standard on all units. An automatic air vent is included and piped directly out of the top of the air separator.
Page 9: Section 3: Field Electrical Connections
SECTION 3: FIELD ELECTRICAL CONNECTIONS Incoming Supply and Control Power The control panel on this equipment includes disconnect switch and the standard configuration includes a control circuit transformer with no separate 120v control power is required. Field wiring must comply with the latest version of the NEC and state and local electrical codes. Equipment Control Wiring A chiller controller is integral with the secondary system controls.
Page 10: Section 4: Field Pressure Testing
SECTION 4: FIELD PRESSURE TESTING Open all ball valves, balance valves and solenoid valve 1. Close all drains and vents. 2. Isolate the expansion tank and pumps. If there are any other components within the system that are not rated for the test pressure, isolate them as well. 3.
Page 11: Section 5: Pipe System Cleaning
CaCO visible debris. The system should then be drained and flushed again using distilled water. Hussmann Water above these levels should not be recommends distilled water for system flushing with introduced in the system.
Page 12: Section 6: Start-Up And Operation
SECTION 6: START-UP AND OPERATION Drain the System 1. Turn off pumps. 2. Open all drain valves in the system. Purge remaining water with dry nitrogen. 3. If drain water is not clean, flush the system again. 4. Remove the cover of the suction guides and remove the start-up strainer from each. Reinstall the run strainer before restarting.
Page 13: Pump Maintenance
A refractometer, calibrated for fluids at room temperature, is used to measure dilution. Hussmann recommends using distilled water. Do not use city water. Inhibited propylene glycol used in the system must be approved for use by the FDA.
Page 14 (GLYCOL SYSTEM PIPING GUIDELINES) PROPYLENE GLYCOL PROPERTIES Propylene glycol (PG): Very high viscosity at low temperatures; less toxic than ethylene glycol; risk of environmental pollution; most commercial products for indirect heat pump and refrigeration systems have good corrosion protection. PG is a colorless, odorless liquid that is generally recognized as safe by the U.S. Food and Drug Administration (FDA) in 21 CFR §...
Page 15 Density (lb./cu.ft) % Propylene Glycol Temp °F 65.3 65.6 65.85 66.11 64.95 65.25 65.54 65.79 66.04 64.23 64.56 64.9 65.19 65.48 65.73 65.97 64.18 64.51 64.85 65.13 65.41 65.65 65.89 64.14 64.47 64.79 65.07 65.35 65.58 65.82 Specific Heat (BTU/lb. °F) % Propylene Glycol Temp °F 0.898...
Page 16 A refractometer, calibrated for fluids at room temperature, is used to measure dilution. Hussmann recommends using distilled water. Do not use city water. Inhibited propylene glycol used in the system must be approved for use by the FDA.
Page 17 Balancing Valve — Secondary Fluid Ship Loose Curve 1: Armstrong Balancing Valve - Flow Rates and Pressure Drop...
Page 21 Typical Pump Station Dimensions ELECTRICAL CONTROL PANEL FILL TANK 91.00 REAR ACCESS REQUIRED FOR STRAINER REMOVAL 46.25 SINGLE VSD, STANDARD DRAIN PAN BACK-UP DISCHARGE VSD, OPTIONAL CONNECTION SUCTION SUCTION CONNECTION CONNECTION 80.08 78.00 64.88 PUMP STATION GUIDE WITH START-UP STRAINER 50.88 (MUST BE ACCESSIBLE) 44.00...
Page 30 To obtain warranty information or other support, contact your Hussmann representative. Please include the model and serial number of the product. Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044-2483 01 October 2012...