Greenheck Fan HRE-20, 90, 55, 45 manual Roof Curb Mounting

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ROOF CURB MOUNTING

Rooftop units require curbs to be mounted first.. The duct connections must be located so they will be clear of structural members of the building..

1.Factory Supplied Roof Curbs

Roof curbs are Model GKD, which are shipped in a knockdown kit (includes duct adapter) and require field assembly (by others).. Assembly instructions are included with the curb..

2.Install Curb

Locate curb over roof opening and fasten in place.. (Refer to Recommended Roof Openings).. Check that the diagonal dimensions are within ±1/8 inch of each other and adjust as necessary.. For proper coil drainage and unit operation, it is important that the installation be level.. Shim as required to level..

3.Install Ductwork

Installation of all ducts should be done in accordance with

SMACNA and AMCA guidelines. Duct adapter provided to support ducts prior to setting the unit..

4.Set the Unit

Lift unit to a point directly above the curb and duct openings.. Guide unit while lowering to align with duct openings.. Roof curbs fit inside the unit base.. Make sure the unit is properly seated on the curb and is level..

Roof curb details, including duct location dimensions, are available on HRE roof curb assembly instructions.

L

W

Curb Outside Dimensions

Curb Outside Dimensions

Weight

 

 

 

Model

L

W

 

 

 

 

 

HRE-20

93

51

280

 

 

 

 

HRE-45

100..5

60..63

355

 

 

 

 

HRE-55

112..75

71..5

450

 

 

 

 

HRE-90

125..75

90..75

625

 

 

 

 

All dimensions shown are in inches..

Model

 

Curb Cap Dimensions

 

A

B

C

D

E

 

HRE-20

2..00

2..00

1..00

0..88

0..75

HRE-45

2..00

4..25

2..00

1..31

0..50

 

 

 

 

 

 

HRE-55

2..00

4..25

2..00

1..31

0..50

 

 

 

 

 

 

HRE-90

2..00

4..25

2..00

1..31

0..50

 

 

 

 

 

 

All dimensions shown are in inches..

SIDE OF UNIT

A

B

C

D

E

ROOF CURB

BASE

1 INCH INSULATION

Curb CAP Details for Factory Supplied Roof Curbs

4

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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.

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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.