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Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.
General Safety Information
Only qualified personnel should install this system.
Personnel should have a clear understanding of these
instructions and should be aware of general safety
precautions. Improper installation can result in electric
shock, possible injury due to coming in contact with
moving parts, as well as other potential hazards. Other
considerations may be required if high winds or seismic
activity are present. If more information is needed,
contact a licensed professional engineer before moving
forward.
DANGER
Always disconnect power before working on or near
this equipment. Lock and tag the disconnect switch or
breaker to prevent accidental power up.
CAUTION
When servicing the unit, the internal components may
be hot enough to cause pain or injury. Allow time for
cooling before servicing.
CAUTION
Precaution should be taken in explosive atmospheres.
®
Energy Recovery Ventilator
Energy Recovery Technical Support
Call 1-800-240-0870
1. Follow all local electrical and safety codes, as well
as the National Electrical Code (NEC), the National
Fire Protection Agency (NFPA), where applicable.
Follow the Canadian Electric Code (CEC) in Canada.
2. All moving parts must be free to rotate without
striking or rubbing any stationary objects.
3. Unit must be securely and adequately grounded.
4. Do not spin fan wheel faster than maximum
cataloged fan RPM. Adjustments to fan speed
significantly effects motor load. If the fan RPM is
changed, the motor current should be checked
to make sure it is not exceeding the motor
nameplate amps.
5. Do not allow the power cable to kink or come in
contact with oil, grease, hot surfaces or chemicals.
Replace cord immediately if damaged.
6. Verify that the power source is compatible with
the equipment.
7. Never open access doors to the unit while it
is running.
Document 473007
Model ERVe
Energy Recovery Ventilator
1
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Related Manuals for Greenheck ERVe Series
Summary of Contents for Greenheck ERVe Series
- Page 1 Document 473007 Model ERVe Energy Recovery Ventilator ® Installation, Operation and Maintenance Manual Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with these instructions will result in voiding of the product warranty and may result in personal injury and/or property damage.
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Page 2: Table Of Contents
Table of Contents Unit Overview Unit Overview ....2 Basic Unit Receiving, Handling and Storage ..3 The ERVe units are prewired such that when a call Installation for outside air is made (via field supplied 24 VAC Dimensional Data . -
Page 3: Receiving, Handling And Storage
Receiving The unit should be stored at least 3½ in. (89 mm) off the floor. Clearance should be provided to permit air This product may have been subject to road salt circulation and space for inspection. during transit. If so, immediately wash off all visible Outdoor white reside from all exterior surfaces. -
Page 4: Installation Dimensional Data
Installation Dimensional Data RA Intake SA Discharge EA Discharge SA Discharge RA Intake OA Intake Exhaust Air Weatherhood OA Intake Electrical Box Duct Dimensions Unit Size ERVe-20 11.8 18.0 12.2 10.7 15.8 18.0 10.8 25.8 ERVe-35 13.1 20.5 13.7 11.9 21.5 20.5 15.8 27.8 Outdoor Air Weatherhood ERVe-45... -
Page 5: Recommended Roof Openings & Weights
Service Clearances Recommended Roof Opening & Weights ERVe units require minimum clearances to perform 1.63 routine maintenance, such as filter replacement, energy 1.63 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 EXHAUST INLET... -
Page 6: Handling
Handling Roof Curb Mounting While this unit was constructed with quality and Roof curb details including duct location dimensions, dependability in mind, damage still may occur during are available on Roof Curb Assembly Instructions, Part handling of the unit for installation. Exercise extreme Number 472119. -
Page 7: Ductwork Connections
Rail Mounting / Layout Curb Outside Dimensions - continued 1. Rails designed to handle the weight of the ERV Unit Side should be positioned as shown on the diagram (rails by others). Unit Base 2. Make sure that rail positioning does not interfere with the supply air discharge opening or the exhaust air intake opening on the ERV unit. -
Page 8: Outdoor Air Weatherhood
Outdoor Air Weatherhood Electrical Information Outdoor air weatherhood will be factory mounted. The unit must be electrically grounded in accordance with the current National Electrical Code, ANSI/NFPA 70. In Canada, use current CSA Standard C22.1, Exhaust Weatherhood Canadian Electrical Code, Part 1. In addition, the The exhaust weatherhood is installer should be aware of any local ordinances or shipped separately as a kit... -
Page 9: Control Center Components
Typical Control Center Components CAUTION 1. Main disconnect (non-fusible, lockable) If any of the original wire as supplied with the 2. Distribution block appliance must be replaced, it must be replaced 3. 24 VAC control transformer with wiring material having a temperature rating of at least 105ºC. -
Page 10: Optional Accessory Wiring Schematics
Optional Accessory Wiring Schematics Dirty Filter Indicator (powered by others) Remote Panel The remote panel is available with a number of different COMMON alarm lights and switches to control the unit. The remote panel ships loose and requires mounting and wiring in the field. -
Page 11: Optional Component Overview Electric Heater
Optional Component Overview Exhaust Only Operation Electric Heater This option allows for the exhaust fan to run Factory installed electric heaters can be provided for continuously while the supply fan is off. preheat frost control. An electric preheater warms the outdoor air prior to the energy recovery wheel to prevent Frost Control frosting on the wheel. -
Page 12: Variable Frequency Drive
Variable Frequency Drives (VFD) Dirty Filter Sensor VFDs are used to control the speed of the fan as either Dirty filter sensors monitor pressure drop across the multi-speed or modulating control. Multi-speed VFDs outdoor air filters, exhaust air filters, or both. If the reference a contact which can be made by a switch or pressure drop across the filters exceeds the set point, a sensor with a satisfied set point. -
Page 13: Start-Up
Start-Up Rotate the fan wheels and energy recovery wheels by hand and ensure no parts are rubbing. If rubbing occurs, refer to Start-Up section for DANGER more information. Electric shock hazard. Can cause injury or death. Check the fan belt drives for proper alignment Before attempting to perform any service or and tension. -
Page 14: Optional Accessories Checklist
Optional Accessories Checklist Refer to the respective sections in this Installation, Operation and Maintenance Manual for detailed information. Refer to wiring diagram in unit control center to determine what electrical accessories were provided. Provided with Unit? Frost Control Application / Operation section: Setting Factory Default Frost Control set point... -
Page 15: Start-Up Components Fans
CORRECT changed (speed, pressure, temperature, etc.), consult Direction of Fan Wheel Rotation Greenheck to determine if the unit can operate safely at the new conditions. Blower access is labeled on unit. Check for proper wheel rotation by momentarily energizing the fan. -
Page 16: Vibration
Vibration Drive Belt Excessive vibration may be experienced during initial Inspect the drive belt. Make sure the belt rides smoothly start-up. Left unchecked, excessive vibration can through the pulley and over the wheel rim. cause a multitude of problems, including structural and/ Air Seals or component failure. -
Page 17: Economizer
Economizer Relevant Set Points 1. MAT SET The mixed air temperature set point The table shows which set points are relevant to the after the energy wheel. The control will modulate given sequences. Refer to the wiring diagram for the the energy wheel to maintain temperature as best units’s sequence. -
Page 18: Frost Control
Frost Control Variable Frequency Drives Optional factory installed, wired, and programmed Timed Exhaust variable frequency drives (VFDs) may have been 1. Remove power from unit. provided for modulating or multi-speed control of the 2. Jumper the frost indicating wheel pressure switch in blowers and energy recovery wheel for economizer and the unit control center. - Page 19 VFDs are Yaskawa factory defaults. However, D1-01 Frequency Reference 1 60 Hz 60 Hz a few set points are changed at Greenheck and are D1-02 Frequency Reference 2 40 Hz 40 Hz shown in the tables. These settings are based on the...
- Page 20 VARIABLE FREQUENCY DRIVES PROPORTIONAL CONTROL FOR ENERGY RECOVERY WHEEL Setting Parameter Setting – J1000 Parameter V1000 J1000 A1-01 Access Level B1-17 VFD Start-Up Setting B1-17 VFD Auto Start C1-04 Decel Time C6-02 Carrier Frequency *C4-01 Torque Gain D2-02 Ref Lower Limit C6-02 Carrier Frequency E2-01...
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Page 21: Routine Maintenance
Routine Maintenance Dampers Check all dampers to ensure they open and close DANGER properly and without binding. Backdraft dampers can be checked by hand to determine if blades open Electric shock hazard. Can cause injury or death. and close freely. Apply power to motorized dampers Before attempting to perform any service or to ensure the actuator opens and closes the damper maintenance, turn the electrical power to unit to OFF... - Page 22 Fan Wheel & Fasteners Internal Filter Maintenance Wheels require very little attention when moving clean The ERVe units are always provided with 2-inch, pleated filters in the outdoor air and exhaust airstreams. These air. Occasionally oil and dust may accumulate on the wheel causing imbalance.
- Page 23 If a belt requires replacement, contact Wheel Belt & Pulley the local Greenheck representative. Instructions for replacement will ship with the new belt. Energy Recovery Wheel Bearing In the unlikely event that...
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Page 24: Troubleshooting Economizer Alarms
Troubleshooting - Economizer Alarms Addressing Alarms Alarms will signify a faulty sensor. When this occurs, verify all connections to the sensor and controller are secure. Press enter twice to clear the alarm. If the issue persists, consult the factory. Clearing Alarms Once the alarm has been identified and the cause has been removed (e.g. -
Page 25: Airflow
Troubleshooting – Airflow Test and Balance Report The Test and Balance Report (TAB) is utilized to determine whether the appropriate amount of outdoor air and exhaust air is being supplied and removed from a building, respectively. There are no set rules on what information must be included in a TAB report. - Page 26 Troubleshooting – Unit Symptom Possible Cause Corrective Action Replace fuse or reset circuit breaker and check Blown fuse or open circuit breaker. amps. Defective motor or capacitor. Replace. Blower fails to Motor starter overloaded. Reset starter and check amps. operate Check for On/Off switches.
- Page 27 Troubleshooting – Unit Symptom Possible Cause Corrective Action One or both blowers turn off Adjust frost temperature sensor set point as intermittently and Exhaust Only frost control sensors are tripping. needed. back on after about 2 minutes See Energy Recovery Wheel under Unit Start-Up Air seals are too tight.
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Page 28: Maintenance Log
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice. Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature section of the website at Greenheck.com/Resources/Library/Literature.