Greenheck Fan 90, 55 Rail Mounting, Ductwork Connections, Supply Weatherhood, Exhaust Weatherhood

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RAIL MOUNTING

Rail Layout

•Rails designed to handle the weight of the HRE should be positioned as shown on the diagram (rails by others)..

•Make sure that rail positioning does not interfere with the supply air discharge opening or the exhaust air intake opening on the HRE unit.. Avoid area dimensioned “B” below

•Rails should run the width of the unit and extend beyond the unit a minimum of 12 inches on each side..

•Set unit on rails.

OUTDOOR

AIR

INTAKE

HOOD

SUPPLY/EXHAUST

OPENING

B A

Side view of HRE on rails

Isometric view of HRE on rails

Model

Rail Mounting

 

 

A

B

 

 

 

 

HRE-20

5..1

25..0

 

 

 

HRE-45

7..1

25..1

 

 

 

HRE-55

5..7

35..0

 

 

 

HRE-90

6..6

36..1

 

 

 

All dimensions shown are in inches..

DUCTWORK CONNECTIONS

Examples of good and poor fan-to-duct connections are shown below.. Airflow out of the fan should be directed straight or curve the same direction as the fan wheel rotates.. Poor duct installation will result in low airflow and other system effects..

R

 

 

tion

 

a

t

 

o

 

 

Length of Straight Duct

R

 

 

tion

 

a

t

 

o

 

 

GOOD

POOR

Recommended Discharge Duct Size and Length

HRE Model

HRE Blower Size

Duct Size

Straight Duct Length

 

 

 

 

HRE-20

10

14 x 14

40

 

 

 

 

HRE-45

12

20 x 20

48

 

 

 

 

HRE-55

15

28 x 28

60

 

 

 

 

HRE-90

18

32 x 32

72

 

 

 

 

Dimensions shown are in inches..

SUPPLY WEATHERHOOD

Supply weatherhood will be factory mounted..

EXHAUST WEATHERHOOD

The exhaust weatherhood is shipped separately as a kit with its own instructions..

Dampers

Backdraft dampers are always included as an integral part of the exhaust hood assemblies.. Motorized outdoor air and exhaust air dampers are optional and are factory mounted (and wired) at the inlet..

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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 Ductwork Connections Rail MountingSupply Weatherhood Exhaust WeatherhoodElectrical Information Exploded Detail Terminal Strip TYPICAL CONTROL CENTER COMPONENTSHRE-55 HRE-90 Service Clearances / access panel locationsHRE-20 HRE-45 Model Exterior Dimensions HRE-20 Dimensional Data / Access Door DescriptionsOverall Exterior Dimensions Model Dimensional dataStandard Trap and Supply Line Configuration Evap Module InstallationEvaporative Cooling Modules Evap Module START-UPTop View Water Flow Adjustment DevicePump and Float ComponentsHRE Water SUPPLY CONNECTION Location Trap & Supply Line Configuration with Auto Drain and Fill EvaporativeEvaporative FreezeTimer ProtectionWater Control Options for Evaporative Cooling Auto Drain and Fill with Freeze ProtectionDrain Trap Drain and Overflow Connection Locations Symptom Solution Troubleshooting for evaporative moduleEvaporative Cooling Maintenance Electric Heater Application/Operation Optional accessoriesElectric Preheater Post-Heater Control PanelTimer Frost Threshold TemperaturesTesting Frost Control Application/OperationModulating 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 Optional Accessories section Optional Accessories ChecklistEconomizer Application / Operation section Variable Frequency Drives sectionFans Forward Curved Type Unit start-upFan Performance Modifications Fan Belt DrivesFan RPM Direction of Fan Wheel RotationVibration Rotation DirectionInside layout of HRE unit Drive BeltAir Seals Date Routine maintenanceDampers LubricationFan Belts Fan MotorsInternal Filter Maintenance External Filter MaintenanceDoor Seal Maintenance BearingsWheel segment removed Energy Recovery Wheel MaintenanceAccess to wheel through Outdoor air filter door Wheel Bearing Wheel Belt & PulleyModel HRE Parts ListBasic Unit Sequence of OperationSummer Operation Winter OperationTest and Balance Report Pressure Drop Across Energy Recovery WheelDesign Airflow Measured 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.

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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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