Greenheck Fan 55, HRE-20, 90, 45 manual TABLE OF Contents, Storage, Basic Operation

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TABLE OF CONTENTS

Storage and Basic Operation

. . . .

.

2

 

Typical Wiring Diagram

. . . . . . . . .

. . .

. 22

Installation

. . . .

.

3

 

Sensors and Lights

. 23. .-24.

Lifting

. . . .

.

3. .

.

. Remote Control Panel & Wiring

.25. -.27

Unit Weights & Recommended Roof

 

 

 

 

Sensors Mounted by Factory

. . . . . . . . . . . 28. .

Openings

. . . . 3. . . Start.

-Up Checklist

 

 

 

Roof Curb Mounting

. . . .

4. .

.

.Unit

. 29-30

Rail Mounting

. . . .

.

5

 

Evaporative Cooler

. .

.30

Ductwork Connections

. . . .

5. .

. .Optional Accessories

. . . . . . . . .

. . .

. 31

Electrical Information

. . . 6-7

 

Fan

.32.

.-33. . .

Service Clearances

. . .

.

8. .

.

Energy. . . . Recovery Wheel

. .

. 34

Dimensional Data/Access Door Description . 9.

Routine Maintenance Checklist

. . .

. 35

Evaporative Cooling Modules

 

 

 

 

Belts and Motors

. . . . . . . . .

. . .

. 36

Evap Module Installation and Start-Up

. 10.-11

 

Blower Wheel and Fasteners

. .

36. . . .

Water Supply Connection Location . . .

. . . .11.

 

Bearings, Filters and Door Seal

. . . 37. . .

Water Control Options

. 12-13

Energy Recovery Wheel Maintenance .

. . . 38.

Drain & Overflow Connection Locations

. . .14.

 

Accessing Energy Recovery Wheel . . .

. . . 38. .

Troubleshooting

. . . .

15

 

Removing Wheel Segments

. .

38. . . .

Maintenance

. . . .

16

 

Cleaning Wheel Segments

. .

.39. . . .

Optional Accessories

. 17-28

Parts List

. . .

40

Electric Heater Application/Operation .

. . . .

17.

Sequence of Operation . . . . . . . . . . . . . . . . 41. .

Frost Control Application/Operation . . . .

. . . .

18

Troubleshooting Airflow

. . . 42. . . .

Economizer Application/Operation

. . . .

19

Unit Troubleshooting

43 and Backcover

Variable Frequency Drives

. 20.-.

21. .

Warranty

. . . . . . Backcover

STORAGE

When a unit is not going to be in service for an extended amount of time, certain procedures should be followed to keep the fans in proper operating condition..

Rotate fan wheel monthly and purge grease from bearings once every three months

Cover unit with tarp to protect from dirt and moisture (Note: do not use a black tarp as this will promote condensation)

Energize fan motor once every three months

Store belts flat to keep them from warping and stretching

Store unit in location which does not have vibration

After storage period, purge grease from fan bearings before putting fan into service

If storage of unit is in a humid, dusty or corrosive atmosphere, rotate the fan and purge the bearings once a month.. Improper storage which results in damage to the unit or components will void the warranty..

BASIC OPERATION

The HRE brings in fresh, outdoor air and removes stale, exhaust air.. For summer operation, the exhaust air flows through an evaporative cooler (indirect) to lower the air temperature.. A sensible recovery wheel transfers energy from the exhaust air to the outdoor air at an efficiency of 70-80% to reduce the temperature of the outdoor air.. The outdoor air can then flow thru an optional evaporative cooler (direct) to further reduce the temperature of the outdoor air.. The sensible wheel also recovers heat from the exhaust in the winter to precondition the outdoor air.. Optional heaters are available after the wheel for final tempering..

2

 

Sensible

Indirect

Exhaust Air

 

Recovery

Evaporative

 

from building

Exhaust Air

Wheel

Cooler

 

discharged outside

 

 

 

Outdoor Air

 

Optional

 

 

 

Heater

Direct

Conditioned Air

Evaporative

sent to space

Cooler

 

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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.

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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.