Greenheck Fan ERV-521, ERV-581, ERV-522, ERV-582 Table of Contents, Basic Operation, Installation

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Table of Contents

Basic Operation

 

 

 

 

3

Installation

 

 

 

 

 

Supplemental Installation, Operation and

 

 

 

 

Maintenance Manuals

 

 

 

 

3

Installation Concerns

.

.

.

3

Lifting

 

 

 

 

4

Roof Curb and Rail Mounting

 

 

 

 

 

Recommended Roof Opening

 

 

 

 

4

Roof Curb Mounting

 

 

 

 

5

Curb Dimensions and Weights . . . .

.

.

.

5

Ductwork Connections

 

 

 

 

5

Rail Mounting / Layout

 

 

 

 

6

Service Clearances

.

.

.

7

Electrical Information

 

 

 

 

 

General Electrical Information

 

 

 

 

8

Control Center Components

.

.

.

9

Electric Heater Application/Operation .

.

.

.

9

Unit Accessories

.

.

.

9

Access Panel Description and Location

. . 10-11

Dimensional Data

 

 

 

12-13

Optional Accessories

 

 

 

 

 

Frost Control Application/Operation . .

.

.

. 14

Economizer Application/Operation

 

 

 

 

15

Variable Frequency Drives and Wiring .

. . 16-17

Typical Wiring Diagram

.

.

. 18

Sensors and Lights

.

.

. 19

Remote Control Panel and Wiring . . .

.

.

. 20

Sensors Mounted by Factory

.

.

. 21

Sequence of Operation

 

 

 

 

 

Start-Up

 

 

 

 

 

Unit

.

.

.

22

Optional Accessories

.

.

. 23

Fan

 

 

 

 

24

Energy Recovery Wheel

.

.

. 25

Routine Maintenance Checklist

 

 

 

 

 

General

 

 

 

 

26

Fan Belts

.

.

. 26

Fan Motors

.

.

. 26

Fan Wheel and Fasteners

 

 

 

 

27

Fan Bearings

 

 

 

 

27

Filters

 

 

 

 

27

Door Seal Maintenance

.

.

. 27

Energy Recovery Wheel Maintenance

 

 

 

 

 

Accessing Energy Recovery Wheel

 

 

 

27-28

Removing Wheel Segments

 

 

 

 

28

Cleaning Wheel Segments

.

.

. 29

Wheel Belt

 

 

 

 

29

Wheel Bearing

.

.

. 29

Parts List

 

 

 

 

30

Sequence of Operation

.

.

.

31

Troubleshooting – Airflow

.

.

.

32

Troubleshooting – Unit

 

 

33-34

Maintenance Log

.

.

.

35

Warranty

Backcover

Basic Operation

The ERV brings in fresh, outdoor air and removes stale, exhaust air. Prior to discharging the exhaust air, the energy recovery wheel transfers energy from the exhaust air to the outdoor air at an efficiency of 70-80%. Simply put, this unit preconditions the outdoor air to save money on heating and cooling costs.

 

Energy Recovery

Exhaust air

Exhaust air

Wheel

from building

discharged

 

 

outside

 

 

Outdoor

air

Preconditioned air

sent to space

Supplemental Installation,

Operation and Maintenance

Manuals

Refer to the following Installation, Operation and Maintenance Manuals for additional details:

Part #460988 — ERV-522 and ERV-582 Curbs Part #462844 — ERV Exhaust Weatherhood

Installation

The system design and installation should follow accepted industry practice, such as described in the ASHRAE Handbook.

Adequate space should be left around the unit for filter replacement and maintenance. Sufficient space should be provided on the side of the unit for routine service and component removal should that become necessary.

See Service Clearances and Access Panel Description sections for more details.

Warning

All factory provided lifting lugs must be used when lifting the unit. Failure to comply with this safety precaution could result in property damage, serious injury or death.

Model ERV Energy Recovery Unit 3

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Contents Models ERV-251 ERV-361 ERV-521 ERV-581 ERV-522 ERV-582 General Safety InformationHandling Inspection and Maintenance during StorageReceiving UnpackingBasic Operation Table of ContentsSupplemental Installation Operation and Maintenance Manuals InstallationRecommended Roof Opening LiftingDuctwork Connections Curb Outside Dimensions and WeightsCurb Outside Dimensions Roof Curb MountingRail Mounting / Layout Arrangement B, C or D Service ClearancesERV-251, ERV-361, ERV-521, ERV-581 ERV-522, ERV-582 Arrangement aElectrical Information Field Control Wiring Length/GaugeUnit Accessories ERV-251, ERV-361, ERV-521, ERV-581 ERV-522 Access Panel Description and LocationOutdoor Air Dimensional Data Arrangement C Arrangement D ERV-522 Unit Size Exterior DimensionsOptional Accessories Frost Threshold Temperatures Indoor RH @ 70FFrost Control Application/Operation Enthalpy Sensor with Override Testing Temperature Sensor with OverrideEconomizer Application/Operation Modulating the WheelVariable Frequency Drives for Energy Recovery Blowers Factory Set PointsDrive Operation 10 VDC Variable Frequency Drives for Energy Recovery WheelResetting the drive to factory defaults Economizer Signal SourceTransformer Typical Wiring DiagramCO2 Sensor Service OutletRotation Sensor Dirty Filter SensorHand/Off/Auto Switch Remote Control Panel and Wiring SchematicsIndicator Lights powered by the ER Unit Day Timer or On/Off SwitchAmp Current Sensors analog or digital Temperature Sensors 1K Ohm RTDSensors Mounted by Factory Pressure Sensors analog or digitalGeneral Start-Up Information Pre Start-Up Checklist check as items areStart-Up Checklist Start-UpVariable Frequency Drives section Optional Accessories ChecklistOptional Accessories section Economizer Application / Operation sectionUnit Start-Up Air Seals Energy Recovery WheelVibration Drive BeltFan Motors Routine MaintenanceMaintenance Procedures Lubrication Fan BeltsInternal Filter Maintenance External Filter MaintenanceDoor Seal Maintenance Energy Recovery Wheel MaintenanceAccessing the Energy Recovery Wheel in Models ERV-522 Removing the Energy Recovery Wheel in ERV-251Wheel segment removed Cleaning the Energy Recovery Wheel Energy Recovery Wheel BeltEnergy Recovery Wheel Bearing Inside layout of ERV-361 Inside layout of ERV-522 Parts ListSummer Operation Other AccessoriesSequence of Operation Basic UnitTroubleshooting Airflow Symptom Possible Cause Corrective Action Troubleshooting UnitTroubleshooting Unit Maintenance Log Warranty

ERV-361, ERV-251, ERV-521, ERV-582, ERV-522 specifications

Greenheck Fan has established itself as a leader in the design and manufacturing of high-performance ventilation systems, including its innovative energy recovery ventilators (ERVs). Among their popular models are the ERV-581, ERV-522, ERV-582, ERV-521, and ERV-251, each designed to enhance indoor air quality while optimizing energy efficiency.

The ERV-581 offers comprehensive ventilation solutions for commercial buildings, equipped with advanced heat recovery technology. This model features a robust, compact design, allowing for easy installation in limited spaces. Its efficient energy recovery capabilities transfer heat and moisture between incoming and outgoing airstreams, leading to significant reductions in heating and cooling costs. The ERV-581 also includes a user-friendly control panel for simplified operation.

Next in line, the ERV-522 is engineered for larger spaces, balancing higher airflow rates with enhanced energy recovery performance. This model is particularly beneficial for schools and office buildings, where maintaining fresh air quality is paramount. The ERV-522 employs a two-stage filtration system, ensuring that airborne pollutants are effectively captured before being circulated back into the environment. Its resilient construction further ensures longevity and durability in demanding applications.

The ERV-582 enhances the lineup with its dual-function capability, serving both as an energy recovery ventilator and a dehumidification system. This flexibility makes it an ideal choice for climates with high humidity levels, where moisture control is essential. The ERV-582 incorporates Greenheck’s patented technology for optimal performance under varying temperature and humidity conditions, making it a versatile solution for diverse environments.

The ERV-521 stands out with its eco-friendly design, featuring recyclable components that align with sustainable building practices. This model is particularly favored in LEED-certified projects, where energy efficiency and minimal environmental impact are essential. The ERV-521 also includes an intelligent control system that adjusts airflow rates based on occupancy levels, ensuring optimal energy usage.

Finally, the ERV-251 is a compact, energy-efficient model suited for residential installations. It is designed to fit seamlessly into homes, providing essential ventilation while reducing energy consumption. The user-friendly interface allows homeowners to monitor and adjust settings easily, making the ERV-251 a popular choice for those looking to improve indoor air quality without compromising on comfort.

Together, these Greenheck ERV models exemplify cutting-edge technologies and engineering, paving the way for healthier indoor environments while promoting energy conservation. Each unit is tailored to meet specific application needs, making them invaluable assets for any ventilation strategy.