Greenheck Fan ERV-521, ERV-581, ERV-522 Sensors Mounted by Factory, Temperature Sensors 1K Ohm RTD

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Sensors Mounted by Factory

Factory mounted temperature, pressure, and current sensors are available in the locations indicated on the unit diagram below. A list of available sensors is shown below. The specific sensors provided on a given unit are labeled in the unit control center on the terminal strip. Sensors are wired to the terminal strip to make it easy for the controls contractor to connect the Building Management System for monitoring purposes.

 

EF-A

EAW

TO

 

 

OUTSIDE

 

 

 

EXHAUST

 

 

BLOWER

 

 

OAF-P

 

 

 

OAI

FROM

OA

 

OUSTIDE

FILTER

 

EW-P

ENERGY WHEEL

OAW-P

RAF-P

RAI

RA

FROM

FILTER

INSIDE

 

OAAWOAF-A

TO

INSIDE

SUPPLY

BLOWER

OAD

Temperature Sensors - 1K Ohm RTD

Drawing Labels

Terminal Strip Labels

OAI

OA/Supply Inlet Temp

 

 

OAAW

OA After Wheel

 

 

RAI

RA/Exhaust Inlet Temp

 

 

OAD

Supply Discharge Temp

 

 

EAW

Exhaust After Wheel Temp

Pressure Sensors (analog or digital)

Drawing Labels

Terminal Strip Labels

 

 

OAF-P

OA/Supply Filter Pressure

 

 

OAW-P

Outdoor Air Wheel Pressure

RAF-P

RA/Exhaust Filter Pressure

 

 

EW-P

Exhaust Wheel Pressure

Amp - Current Sensors (analog or digital)

Drawing Labels

Terminal Strip Labels

 

 

OAF-A

Supply Fan Amps

 

 

EF-A

Exhaust Fan Amps

Model ERV Energy Recovery Unit 21

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Contents Models ERV-251 ERV-361 ERV-521 ERV-581 ERV-522 ERV-582 General Safety InformationReceiving Inspection and Maintenance during StorageUnpacking HandlingSupplemental Installation Operation and Maintenance Manuals Table of ContentsInstallation Basic OperationRecommended Roof Opening LiftingCurb Outside Dimensions Curb Outside Dimensions and WeightsRoof Curb Mounting Ductwork ConnectionsRail Mounting / Layout ERV-251, ERV-361, ERV-521, ERV-581 ERV-522, ERV-582 Service ClearancesArrangement a Arrangement B, C or DElectrical 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 Economizer Application/Operation Testing Temperature Sensor with OverrideModulating the Wheel Enthalpy Sensor with OverrideVariable Frequency Drives for Energy Recovery Blowers Factory Set PointsDrive Operation Resetting the drive to factory defaults Variable Frequency Drives for Energy Recovery WheelEconomizer Signal Source 10 VDCTransformer Typical Wiring DiagramRotation Sensor Service OutletDirty Filter Sensor CO2 SensorIndicator Lights powered by the ER Unit Remote Control Panel and Wiring SchematicsDay Timer or On/Off Switch Hand/Off/Auto SwitchSensors Mounted by Factory Temperature Sensors 1K Ohm RTDPressure Sensors analog or digital Amp Current Sensors analog or digitalStart-Up Checklist Pre Start-Up Checklist check as items areStart-Up General Start-Up InformationOptional Accessories section Optional Accessories ChecklistEconomizer Application / Operation section Variable Frequency Drives sectionUnit Start-Up Vibration Energy Recovery WheelDrive Belt Air SealsMaintenance Procedures Lubrication Routine MaintenanceFan Belts Fan MotorsDoor Seal Maintenance External Filter MaintenanceEnergy Recovery Wheel Maintenance Internal Filter 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 ListSequence of Operation Other AccessoriesBasic Unit Summer OperationTroubleshooting 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.