Greenheck Fan ERVe Variable Frequency Drives for Energy Recovery Blowers, Factory Set Points

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Variable Frequency Drives for Energy Recovery Blowers

Optional factory installed, wired, and programmed variable frequency drives (VFDs) may have been provided for modulating or multispeed control of the blowers. One VFD is provided for each blower (supply air and exhaust). The VFD’s provided are either Yaskawa model V1000 or J1000. Refer to the tables in this section for factory settings and field wiring requirements. Refer to the unit control center for unit specific wiring diagram (an example wiring diagram has been provided in this manual for reference). When making adjustments outside of the factory set points, refer to Yaskawa VFD instruction manual, which can be found online at www.drives.com. For technical support, contact Yaskawa direct at 1-800-927-5292.

R+ R- S+ S- IG

P1 P2 PC A1 A2 +V AC AM AC MP

S1 S2 S3 S4 S5 S6 S7 HC SC H1 RP MA MB MC

V1000

OPTION 1 - 0-10 VDC CONTROL

USER TO PROVIDE ISOLATION AS REQUIRED

A1

AC

0-10 VDC CONTROL SIGNAL (BY OTHERS)

 

 

 

 

WIRED TO A1 (+) AND AC (COMMON)

 

 

 

 

 

 

 

 

0 VDC=30 Hz

 

 

 

 

 

 

 

 

10 VDC=60 Hz

 

 

 

 

 

 

 

 

 

FOR ONE 0-10 SIGNAL, WIRE TO DRIVES IN PARALLEL SEE VFD INSTALLATION MANUAL FOR MORE DETAIL

FOR CONTINUOUS 60Hz OPERATION JUMPER TERMINALS A1 AND +V.

OPTION 2 - MULTI SPEED CONTROL

USER TO PROVIDE CONTACTS AND ISOLATION

AS REQUIRED

S4

S5

SC

NEITHER S4 OR S5 CONTACT CLOSED

DRIVE SPEED = 60 Hz.

 

 

 

 

 

 

S4 TO SC CONTACT CLOSED (BY OTHERS)

 

 

 

DRIVE SPEED = 40 Hz.

 

 

 

S5 TO SC CONTACT CLOSED (BY OTHERS)

 

 

 

DRIVE SPEED = 30 Hz.

SEE VFD INSTALLATION MANUAL FOR MORE DETAIL

TO CHANGE THE FACTORY SET Hz CHANGE THE FOLLOWING PARAMETERS.

PARAMETER A1-01 CHANGE TO 2

PARAMETER d1-01 FOR NEW 60Hz SETTING

PARAMETER d1-02 FOR NEW 40Hz SETTING

PARAMETER d1-03 FOR NEW 30Hz SETTING

PARAMETER A1-01 CHANGE TO 0

S1 S2 S3 S4 S5 SC A1 +V AC AM AC

MA MB MC

J1000

 

Factory Set Points

Variable Frequency Drives (VFDs) for the blowers are factory setup to operate in one of the three following modes:

Modulating: 0-10 VDC signal wired in the field by others varies the speed of the blower between 30 and 60Hz

Multispeed: Digital contact closures by others command the VFD to run at multiple speed settings:

SC to S4 - Drive runs at 40Hz

SC to S5 - Drive runs at 30Hz

CO2 Sensor: A digital contact closure from an optional factory provided CO2 sensor sends the VFD to high or low speed depending on CO2 ppm levels at the sensor.

The terminal locations for Modulating (option 1) and Multi-speed (option 2) are shown on the left. Most of the set points in the VFDs are Yaskawa factory defaults. However, a few set points are changed at Greenheck and are shown in the tables on the next page. These settings are based on the VFD mode selected.

To gain access to change set points on the V1000 and J1000 drives, parameter A1-01 needs to be set at “2”. To prevent access or tampering with drive settings on either drive, change parameter A1-01 to “0”.

Drive Operation

SC to S1 contact for On/Off

A1 (0-10 VDC) referenced to AC. Can use +15 VDC from +V

Model ERVe Energy Recovery Unit 13

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Contents Model ERVe General Safety Information Installation, Operation and Maintenance ManualReceiving Inspection and Maintenance during StorageUnpacking HandlingSupplemental Installation Operation and Maintenance Manuals Table of ContentsInstallation Basic OperationLifting with a Crane Roof Curb and Rail MountingLifting with a Forklift Recommended Roof OpeningRoof Curb Mounting Curb Outside Dimensions and WeightsDuctwork Connections Access Panel Description and Location Service ClearancesRail Mounting / Layout Duct Dimensions Unit Size Dimensional DataElectrical Information Electric Heater Application/Operation Typical Control Center ComponentsOutdoor Air Weatherhood Unit AccessoriesExhaust Weatherhood DampersFrost Control Application/Operation Optional AccessoriesEconomizer Application/Operation Testing Temperature Sensor with OverrideModulating the Wheel Enthalpy Sensor with OverrideFactory Set Points Variable Frequency Drives for Energy Recovery BlowersDrive Operation Economizer Signal Source Variable Frequency Drives for Energy Recovery Wheel10 VDC Transformer 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 Dirty Filter Indicator power by othersSensors 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 MotorsInternal Filter Maintenance External Filter MaintenanceDoor Seal Maintenance Fan Wheel & FastenersEnergy Recovery Wheel Maintenance Sequence of Operation Parts ListTroubleshooting Airflow Symptom Possible Cause Corrective Action Troubleshooting UnitTroubleshooting Unit Maintenance Log Model ERVe Energy Recovery Unit Warranty

ERVe specifications

The Greenheck Fan ERVe series stands at the forefront of energy-efficient ventilation solutions, specifically designed to meet the growing demands for energy conservation and enhanced indoor air quality in commercial buildings. As part of Greenheck's commitment to innovation, the ERVe series offers a variety of models tailored to diverse applications, including schools, hospitals, and office buildings.

One of the key features of the ERVe series is its advanced energy recovery technology. The ERVe utilizes a heat recovery wheel that efficiently transfers heat and moisture between the exhaust and incoming airstreams. This process significantly reduces heating and cooling loads on HVAC systems, promoting energy savings and improving overall system efficiency. By reclaiming energy that would otherwise be wasted, the ERVe ensures that buildings not only conform to energy codes but also contribute to sustainability goals.

The ERVe series is designed with versatility in mind. It offers multiple configurations, including vertical and horizontal orientations, which makes it adaptable to various installation environments. Additionally, the unit can be equipped with a range of options such as pre-filters, post-filters, and variable speed drive motors, allowing for customization based on specific application needs. This adaptability ensures that the ERVe can meet the specific air quality requirements of different spaces while maintaining optimal airflow.

Another significant characteristic of the ERVe series is its low noise operation. The design incorporates advanced acoustical features, including sound attenuators and insulated panels, which minimize sound transmission and enhance occupant comfort. As noise control becomes increasingly important in settings like educational institutions and healthcare facilities, the ERVe series excels in providing a peaceful indoor environment.

Moreover, the ERVe series is engineered with durability in mind. Constructed from high-quality materials, the units are built to withstand the rigors of continuous operation. The robust design not only extends the service life of the equipment but also reduces maintenance requirements, leading to lower overall operational costs.

In terms of control and monitoring, the ERVe series is compatible with various building management systems, allowing for integration into sophisticated HVAC controls. This feature enables real-time data tracking and optimization, enhancing the efficiency of indoor climate management.

Overall, the Greenheck Fan ERVe series represents a significant advancement in ventilation technology, combining energy efficiency, customizable features, low noise operation, and durability. These characteristics ensure that the ERVe is a reliable choice for modern commercial buildings striving for improved air quality and reduced energy consumption.