Greenheck Fan 45, HRE-20, 90, 55 manual HRE Water SUPPLY CONNECTION Location, Top View

Page 11

7.Verify that both airflow and system static pressure are in agreement with the specifications.. If these conditions are met, check for water carry over from the discharge side of the media.. If carry over is observed, check the distribution header for holes or tears and the water standoff tube for blockage..

8.After all final adjustments are made, remove the jumper wires, connect “call for cooling” signal, and replace all access panels.. The unit is now ready for operation..

Overflow

Bleed-Off

Pump

Supply

Float

Valve

Filter

Connection

Valve

 

Threaded

Float

Adjustment

Water Flow Adjustment DevicePump and Float Components

HRE WATER SUPPLY CONNECTION LOCATION

Model

 

Water Supply Connection Locations

 

 

 

 

 

A

B

C

D

 

 

 

 

 

 

HRE-20

37..375

4..625

4..625

39..25

 

 

 

 

 

HRE-45

38..75

4..625

4..625

43..00

 

 

 

 

 

HRE-55

43..50

4..625

4..625

46..125

 

 

 

 

 

HRE-90

43..50

4..625

4..625

52..625

 

 

 

 

 

Dimensions from outside of unit (in inches)

D

C

Ø 0.875

Run 1/4 inch line up through 7/8 inch hole here and bring around end

of sump to supply connection.

1/4 inch Water Supply Connection

Top View

OA INLET

1/4 inch Water Supply Connection

Ø 0.875

Run 1/4 inch line up through 7/8 inch hole here and bring around end of sump to supply connection.

EA INLET

B

A

11

Image 11
Contents Direct Evaporative Cooler Read and Save These INSTRUCTIONS461248Indirect Evaporative Cooler Basic Operation TABLE OF ContentsStorage Lifting InstallationSafety Warning Roof Curb Mounting Exhaust Weatherhood Rail MountingDuctwork Connections Supply WeatherhoodElectrical Information Exploded Detail Terminal Strip TYPICAL CONTROL CENTER COMPONENTSHRE-55 HRE-90 Service Clearances / access panel locationsHRE-20 HRE-45 Dimensional data Dimensional Data / Access Door DescriptionsModel Exterior Dimensions HRE-20 Overall Exterior Dimensions ModelEvap Module START-UP Evap Module InstallationStandard Trap and Supply Line Configuration Evaporative Cooling ModulesTop View Water Flow Adjustment DevicePump and Float ComponentsHRE Water SUPPLY CONNECTION Location Auto Drain and Fill with Freeze Protection EvaporativeEvaporative FreezeTimer ProtectionTrap & Supply Line Configuration with Auto Drain and Fill Water Control Options for Evaporative CoolingDrain Trap Drain and Overflow Connection Locations Symptom Solution Troubleshooting for evaporative moduleEvaporative Cooling Maintenance Post-Heater Control Panel Optional accessoriesElectric Heater Application/Operation Electric PreheaterFrost Control Application/Operation Frost Threshold TemperaturesTimer TestingModulating the Wheel Enthalpy Sensor With Override Economizer Application/OperationYaskawa Yaskawa E7 Variable Frequency Drives for BlowersFactory Setpoints Modulating Control 0-10 VDC for FAN Speed Variable Frequency Drives for Energy Recovery WheelTransformer Wiring DiagramDirty Filter Sensor Rotation SensorVapor Tight Lights Service OutletCO2 Sensor Remote Control Panel and Wiring Schematics Optional AccessoriesIndicator Lights powered by the ER Unit Remote Panel Wiring SchematicsHeating/Cooling Switches and Night Setback Switch/Timer Sensors Mounted by Factory Temperature Sensors 1K Ohm RTDSafety Caution Start-Up Checklist for unitSafety Danger Special Tools Required Start-Up ChecklistStart-Up Checklist for Evaporative Cooler Variable Frequency Drives section Optional Accessories ChecklistOptional Accessories section Economizer Application / Operation sectionFan Belt Drives Unit start-upFans Forward Curved Type Fan Performance ModificationsRotation Direction Direction of Fan Wheel RotationFan RPM VibrationInside layout of HRE unit Drive BeltAir Seals Date Routine maintenanceFan Motors LubricationDampers Fan BeltsBearings External Filter MaintenanceInternal Filter Maintenance Door Seal MaintenanceWheel segment removed Energy Recovery Wheel MaintenanceAccess to wheel through Outdoor air filter door Wheel Bearing Wheel Belt & PulleyModel HRE Parts ListWinter Operation Sequence of OperationBasic Unit Summer OperationMeasured Airflow Pressure Drop Across Energy Recovery WheelTest and Balance Report Design AirflowSymptom Possible Cause Corrective Action TroubleshootingWarranty
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45, 55, 90, HRE-20 specifications

The Greenheck Fan HRE series, specifically the models HRE-20, HRE-90, HRE-55, and HRE-45, represents a blend of innovation and efficiency in the HVAC industry. Built for both commercial and industrial applications, these exhaust fans stand out due to their robust design and advanced operational features.

One of the main features of the HRE series is its energy-efficient motor design. These fans come equipped with a premium efficiency motor that reduces energy consumption while maintaining high performance. The motors are specifically designed to provide exceptional airflow while operating at lower sound levels, ensuring a quieter environment.

The HRE models also showcase advanced aerodynamic design, featuring optimized blade geometry that enhances airflow performance. This design ensures that the fans can deliver consistent and effective air movement even at varying operational conditions. This makes the HRE series suitable for use in a wide range of applications, from commercial kitchens to industrial processes.

Another significant characteristic of the HRE series is its durability. Constructed from high-quality materials, these fans are built to withstand harsh environmental conditions and prolonged usage. The robust casing and corrosion-resistant finishes ensure longevity, reducing the need for frequent repairs or replacements.

In terms of installation and maintenance, the HRE series offers significant advantages. The fans are designed for easy installation with clear mounting instructions. Additionally, maintenance procedures are simplified, allowing for hassle-free access to critical components, which reduces downtime and operating costs.

Technologically, the HRE models incorporate advanced controls and monitoring systems. These systems can offer real-time feedback on operational performance, allowing for proactive maintenance and energy management. Integrated controls can be customized to work with building management systems, providing users with seamless integration and control capabilities.

Overall, the Greenheck Fan HRE-20, HRE-90, HRE-55, and HRE-45 exemplify a commitment to quality and efficiency in commercial and industrial ventilation solutions. Their combination of energy efficiency, advanced design, durability, and user-friendly features make them a leading choice for those seeking reliable airflow solutions. These fans not only meet current industry standards but also set a benchmark for performance and innovation in the HVAC sector.