Greenheck Fan 55, HRE-20, 90, 45 manual Energy Recovery Wheel Maintenance, Wheel segment removed

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routine maintenance

Energy Recovery Wheel Maintenance

Annual inspection of the energy recovery wheel is recommended.. Units ventilating smoking lounges and other non-clean air spaces should have energy recovery wheel inspections more often based upon need.. Inspections for smoke ventilation applications are recommended bimonthly to quarterly until a regular schedule can be established..

ACCESSING ENERGY RECOVERY WHEEL

The HRE units have one energy recovery wheel.. Open the outdoor air filter door to access the wheel.. For the HRE-20 and HRE-45 models, the wheel cassette slides out.. Due to the size and weight of the HRE-55 and HRE-90 wheels, they remain stationary and all maintenance is performed in place.. There is room inside the unit to perform energy recovery wheel servicing.. Filters must be removed to access stationary wheels..

**WARNING: Disconnect power to the unit before performing any type of service.

REMOVING THE ENERGY RECOVERY WHEEL SEGMENTS Models HRE-20, 45, 55, & 90

Access to wheel through

outdoor air filter door

Bracket Segment Retainer

Steel retainers are located on the inside of the wheel rim (see diagram at right).. Push the retainer toward center of wheel, then lift up and away to release segments (see below)..

Lift Away

From Segment

Catch-

 

Segment Retainer

Inside of Wheel Rim

 

 

Spoke

 

Push Toward Center

important! PLACE RETAINERS BACK IN THE ORIGINAL POSITION BEFORE ROTATING THE ENERGY RECOVERY WHEEL. OTHERWISE DAMAGE TO RETAINER WILL OCCUR.

Wheel segment removed

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Contents Direct Evaporative Cooler Read and Save These INSTRUCTIONS461248Indirect Evaporative Cooler Basic Operation TABLE OF ContentsStorage Lifting InstallationSafety Warning Roof Curb Mounting Supply Weatherhood Rail MountingDuctwork Connections Exhaust WeatherhoodElectrical Information TYPICAL CONTROL CENTER COMPONENTS Exploded Detail Terminal StripHRE-55 HRE-90 Service Clearances / access panel locationsHRE-20 HRE-45 Overall Exterior Dimensions Model Dimensional Data / Access Door DescriptionsModel Exterior Dimensions HRE-20 Dimensional dataEvaporative Cooling Modules Evap Module InstallationStandard Trap and Supply Line Configuration Evap Module START-UPTop View Water Flow Adjustment DevicePump and Float ComponentsHRE Water SUPPLY CONNECTION Location Water Control Options for Evaporative Cooling EvaporativeEvaporative FreezeTimer ProtectionTrap & Supply Line Configuration with Auto Drain and Fill Auto Drain and Fill with Freeze ProtectionDrain Trap Drain and Overflow Connection Locations Troubleshooting for evaporative module Symptom SolutionEvaporative Cooling Maintenance Electric Preheater Optional accessoriesElectric Heater Application/Operation Post-Heater Control PanelTesting Frost Threshold TemperaturesTimer Frost Control Application/OperationEconomizer Application/Operation Modulating the Wheel Enthalpy Sensor With OverrideVariable Frequency Drives for Blowers Yaskawa Yaskawa E7Variable Frequency Drives for Energy Recovery Wheel Factory Setpoints Modulating Control 0-10 VDC for FAN SpeedWiring Diagram TransformerRotation Sensor Dirty Filter SensorVapor Tight Lights Service OutletCO2 Sensor Optional Accessories Remote Control Panel and Wiring SchematicsRemote Panel Wiring Schematics Indicator Lights powered by the ER UnitHeating/Cooling Switches and Night Setback Switch/Timer Temperature Sensors 1K Ohm RTD Sensors Mounted by FactorySafety Caution Start-Up Checklist for unitSafety Danger Special Tools Required Start-Up ChecklistStart-Up Checklist for Evaporative Cooler Economizer Application / Operation section Optional Accessories ChecklistOptional Accessories section Variable Frequency Drives sectionFan Performance Modifications Unit start-upFans Forward Curved Type Fan Belt DrivesVibration Direction of Fan Wheel RotationFan RPM Rotation DirectionInside layout of HRE unit Drive BeltAir Seals Routine maintenance DateFan Belts LubricationDampers Fan MotorsDoor Seal Maintenance External Filter MaintenanceInternal Filter Maintenance BearingsWheel segment removed Energy Recovery Wheel MaintenanceAccess to wheel through Outdoor air filter door Wheel Belt & Pulley Wheel BearingParts List Model HRESummer Operation Sequence of OperationBasic Unit Winter OperationDesign Airflow Pressure Drop Across Energy Recovery WheelTest and Balance Report Measured AirflowTroubleshooting Symptom Possible Cause Corrective ActionWarranty
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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.
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