Greenheck Fan manual Service Clearances, ERV-251, ERV-361, ERV-521, ERV-581 ERV-522, ERV-582

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Service Clearances

ERV-251, 361, 521 and 581 units require minimum clearances to perform routine maintenance, such as filter replacement, energy wheel cassette inspection, and fan belt adjustment. Blower and motor assemblies, energy recovery wheel cassette and filter sections are always provided with a service door or panel for proper component access. Clearances for component removal may be greater than the service clearances, refer to drawings below for these dimensions.

ERV-251, ERV-361, ERV-521, ERV-581

ERV-522, ERV-582

Access

T

Exhaust

Outdoor

 

 

Side

Air Side

Panels

 

 

 

 

 

 

 

 

 

 

 

 

*ERV-251, 361, and 521 only.

Arrangement A

R

Cassette slides out*

Access Panels

 

X

Cassette

 

 

Access Panel

 

Access Panel

 

 

X

X

 

 

Access

 

Panel

Access

T

 

 

Panels

Panel

 

 

R

 

 

 

 

 

Exhaust

Outdoor

 

Access

 

Side

Air Side

Cassette slides out*

 

 

 

Exhaust

 

 

 

 

Hood

 

 

 

Intake Hood

S

Access Panel

*ERV-251, 361, and 521 only.

Arrangement B, C or D

Recommended Service Clearances

Unit Size

R

S

T

X

 

 

 

 

 

ERV-251

32

30

30

 

 

 

 

 

 

ERV-361

44

30

30

 

(30 for maintenance)

 

 

 

 

 

ERV-521

60

40

40

 

(39 for maintenance)

 

 

 

 

 

ERV-581

65

40

40

 

(32 for maintenance)

 

 

 

 

 

ERV-522

 

 

 

38

 

 

 

 

 

ERV-582

 

 

 

42

 

 

 

 

 

All dimensions are in inches.

Panel

Access

Cassette

X

Arrangement A

 

X

Cassette

 

 

Access Panel

 

Access Panel

 

 

X

X

 

Panel

 

 

Access

Access Panel

 

Access Panel

 

 

Exhaust

 

 

Weatherhood

Cassette

Supply

X

Weatherhood

Arrangement B, C or D

Model ERV Energy Recovery Unit 7

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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 DimensionsFrost Threshold Temperatures Indoor RH @ 70F Optional AccessoriesFrost Control Application/Operation Enthalpy Sensor with Override Testing Temperature Sensor with OverrideEconomizer Application/Operation Modulating the WheelFactory Set Points Variable Frequency Drives for Energy Recovery BlowersDrive 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 MaintenanceRemoving the Energy Recovery Wheel in ERV-251 Accessing the Energy Recovery Wheel in Models ERV-522Wheel segment removed Energy Recovery Wheel Belt Cleaning the Energy Recovery WheelEnergy 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.