Advertisement

®
Installation, Operation and Maintenance Manual
Please read and save these instructions. 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 instructions
could result in personal injury and/or property damage! Retain instructions for future reference.
Model ERVe

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.
1
Energy Recovery Ventilator
Energy Recovery Ventilators
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

Advertisement

Table of Contents
loading

Summary of Contents for Greenheck ERVe

  • Page 1: General Safety Information

    Document 473007 Energy Recovery Ventilators ® Installation, Operation and Maintenance Manual Please read and save these instructions. 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 instructions could result in personal injury and/or property damage! Retain instructions for future reference.
  • Page 2 Traffic Department. If damaged upon arrival, file claim with carrier. Any physical damage to the unit after acceptance is not the responsibility of Greenheck Fan Corporation. Unpacking Verify that all required parts and the correct quantity of each item have been received.
  • Page 3: Table Of Contents

    Table of Contents Product Overview Product Overview ... . . 3 The ERVe brings in fresh, outdoor air and removes Supplemental Installation, Operation and stale, exhaust air. Prior to discharging the exhaust Maintenance Manuals .
  • 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 11.8 18.0 12.2 10.7 15.8 18.0 10.8 25.8 ERVe-20 13.1 20.5 13.7 11.9 21.5 20.5 15.8 27.8 ERVe-35 Outdoor Air Weatherhood...
  • Page 5: Recommended Roof Openings & Weights

    Service Clearances Recommended Roof Opening & Weights ERVe units require minimum clearances to perform routine maintenance, such as filter replacement, 1.63 1.63 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 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, handling of the unit for installation. Exercise extreme Part 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 1.895 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 Exhaust Weatherhood with the current National Electrical Code, ANSI/NFPA 70. In Canada, use current CSA Standard C22.1, The exhaust weatherhood is shipped separately as a kit with Canadian Electrical Code, Part 1.
  • 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. Motor Starter – Exhaust Air Fan appliance must be replaced, it must be replaced 3. Motor Starter – Outdoor Air Fan with wiring material having a temperature rating of at least 105ºC.
  • Page 10: Optional Accessory Wiring Schematics

    Optional Accessory Wiring Schematics Remote Panel Unit Interfacing Terminals The remote panel is available with a number of Heating/Cooling Switches & Night Setback different alarm lights and switches to control the unit. Switch/Timer The remote panel ships loose and requires mounting TERMINAL BLOCKS IN UNIT CONTROL CENTER and wiring in the field.
  • Page 11: Unit Overview

    Unit Overview Optional Component Overview Basic Unit Economizer The ERVe units are prewired such that when a call The energy wheel operation can be altered to take for outside air is made (via field supplied 24 VAC advantage of economizer operation (free cooling). control signal wired to unit control center), the supply Two modes are available: fan, exhaust fan and energy wheel are energized...
  • Page 12: Frost Control

    Frost Control Variable Frequency Drives (VFD) VFDs are used to control the speed of the fan as Extremely cold outdoor air temperatures can cause either multi-speed or modulating control. Multi- moisture condensation and frosting on the energy speed VFDs reference a contact which can be made recovery wheel.
  • 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 more DANGER 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 (refer to Start-Up section for more maintenance, turn the electrical power to unit...
  • 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

    Start-Up Components 5. Place belts over sheaves. Do not pry or force belts, as this could result in damage to the cords Fans in the belts. The ERVe models contain 6. With the fan off, adjust the belt tension by moving two forward curved (supply &...
  • Page 16: Vibration

    Vibration Drive Belt Excessive vibration may be experienced during initial Inspect the drive belt. Make sure the belt rides start-up. Left unchecked, excessive vibration can smoothly through the pulley and over the wheel rim. cause a multitude of problems, including structural Air Seals and/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 blowers and energy recovery wheel for economizer in the unit control center.
  • Page 19 Factory Set Points MODULATING CONTROL FOR FAN SPEED Variable frequency drives (VFDs) for the blowers are (0-10 VDC) factory setup to operate in one of the three following Setting modes: Parameter V1000 J1000 • Modulating: 0-10 VDC signal wired in the field by A1-01 Access Level others varies the speed of the blower between 30...
  • 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 C6-02 Carrier Frequency C1-04 Decel Time *C4-01 Torque Gain D2-02 Ref Lower Limit C6-02 Carrier Frequency E2-01...
  • 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 and Electric shock hazard. Can cause injury or death. close freely. Apply power to motorized dampers to Before attempting to perform any service or ensure the actuator opens and closes the damper as maintenance, turn the electrical power to unit...
  • Page 22 Fan Wheel & Fasteners Pleated Filter Size and Quantities Wheels require very little attention when moving clean Supply Exhaust Unit Size air. Occasionally oil and dust may accumulate on the Size Supply Exhaust wheel causing imbalance. When this occurs the wheel ERVe-20 20 x 20 20 x 20...
  • Page 23 Energy Recovery Wheel Maintenance Cleaning the Energy Recovery Wheel Annual inspection of the energy recovery wheel is If the wheel appears excessively dirty, it should be recommended. Units ventilating smoking lounges cleaned to ensure maximum operating efficiency. and other non-clean air spaces should have energy Only excessive buildup of foreign material needs to recovery wheel inspections more often based upon be removed.
  • 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: Unit

    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.
  • Page 28: Maintenance Log

    AMCA International, Inc. at www.amca.or ® Phone: 715.359.6171 • Fax: 715.355.2399 • Parts: 800.355.5354 • E-mail: gfcinfo@greenheck.com • Website: www.greenheck.com 473007 • Model ERVe IOM, Rev. 3, April 2013 Copyright 2013 © Greenheck Fan Corp.

This manual is also suitable for:

Erve-20Erve-35Erve-45Erve-55

Table of Contents