Greenheck Fan HRE-20, 90, 55, 45 manual Sensors Mounted by Factory, Temperature Sensors 1K Ohm RTD

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optional accessories

Sensors Mounted by Factory

Factory mounted temperature, pressure, and current sensors are available in the locations indicated on the unit diagram below.. A list of available sensors is shown below.. The specific sensors provided on a given unit are labeled in the unit control center on the terminal strip.. Sensors are wired to the terminal strip to make it easy for the controls contractor to connect the Building Management System for monitoring purposes..

TO

OUTSIDE

FROM

OUSTIDE

EF-A

EXHAUST BLOWER

OAF-P

OA

FILTER

EAW

OAI

EW-P

ENERGY WHEEL

OAW-P

RAI

OAAW

COOL

HEAT

COIL

COIL

ACC

RAF-P

RA

FILTER

OAF-A

SUPPLY

BLOWER

FROM INSIDE

TO INSIDE

OAD

Temperature Sensors - 1K Ohm RTD

Drawing Labels

Terminal Strip Labels

 

 

OAI

OA/Supply Inlet Temp

OAAW

OA After

 

 

ACC

After Cooling Coil Temp

 

 

OAD

Supply Discharge Temp

EAW

Exhaust After Wheel Temp

 

 

RAI

RA/Exhaust Inlet Temp

Pressure Sensors (analog or digital)

Drawing Labels

Terminal Strip Labels

OAF-P

OA/Supply Filter Pressure

 

 

OAW-P

Outdoor Air Wheel Pressure

 

 

RAF-P

RA/Exhaust Filter Pressure

EW-P

Exhaust Wheel Pressure

 

 

Amp - Current Sensors (analog or digital)

Drawing Labels

Terminal Strip Labels

OAF-P

Supply Fan Amps

 

 

EF-A

Exhaust Fan Amps

 

 

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Contents Indirect Evaporative Cooler Read and Save These INSTRUCTIONS461248Direct Evaporative Cooler Storage TABLE OF ContentsBasic Operation Safety Warning InstallationLifting Roof Curb Mounting Rail Mounting Ductwork ConnectionsSupply Weatherhood Exhaust WeatherhoodElectrical Information TYPICAL CONTROL CENTER COMPONENTS Exploded Detail Terminal StripHRE-20 HRE-45 Service Clearances / access panel locationsHRE-55 HRE-90 Dimensional Data / Access Door Descriptions Model Exterior Dimensions HRE-20Overall Exterior Dimensions Model Dimensional dataEvap Module Installation Standard Trap and Supply Line ConfigurationEvaporative Cooling Modules Evap Module START-UPHRE Water SUPPLY CONNECTION Location Water Flow Adjustment DevicePump and Float ComponentsTop View EvaporativeEvaporative FreezeTimer Protection Trap & Supply Line Configuration with Auto Drain and FillWater Control Options for Evaporative Cooling Auto Drain and Fill with Freeze ProtectionDrain Trap Drain and Overflow Connection Locations Troubleshooting for evaporative module Symptom SolutionEvaporative Cooling Maintenance Optional accessories Electric Heater Application/OperationElectric Preheater Post-Heater Control PanelFrost Threshold Temperatures TimerTesting 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 SensorCO2 Sensor Service OutletVapor Tight Lights 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 Danger Start-Up Checklist for unitSafety Caution Start-Up Checklist for Evaporative Cooler Start-Up ChecklistSpecial Tools Required Optional Accessories Checklist Optional Accessories sectionEconomizer Application / Operation section Variable Frequency Drives sectionUnit start-up Fans Forward Curved TypeFan Performance Modifications Fan Belt DrivesDirection of Fan Wheel Rotation Fan RPMVibration Rotation DirectionAir Seals Drive BeltInside layout of HRE unit Routine maintenance DateLubrication DampersFan Belts Fan MotorsExternal Filter Maintenance Internal Filter MaintenanceDoor Seal Maintenance BearingsAccess to wheel through Outdoor air filter door Energy Recovery Wheel MaintenanceWheel segment removed Wheel Belt & Pulley Wheel BearingParts List Model HRESequence of Operation Basic UnitSummer Operation Winter OperationPressure Drop Across Energy Recovery Wheel Test and Balance ReportDesign Airflow 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.