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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 instructions could result in personal injury and/or property damage!
VersiVent - Model VER
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
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 affects 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.
VersiVent Energy Recovery Ventilator
Document 471849
VersiVent
1
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Related Manuals for Greenheck VersiVent VER-45
Summary of Contents for Greenheck VersiVent VER-45
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Page 1: General Safety Information
Document 471849 Energy Recovery Ventilator VersiVent ® 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. -
Page 2: Table Of Contents
Table of Contents Start-Up Components General Safety Information ....1 Energy Wheel ......25 Receiving, Handling and Storage . -
Page 3: Receiving, Handling And Storage
Receiving The unit should be stored at least 3½ in. (89 mm) off the floor on wooden blocks covered with moisture proof Upon receiving the product check to make sure all items paper or polyethylene sheathing. Aisles between parts are accounted for by referencing the bill of lading to and along all walls should be provided to permit air ensure all items were received. -
Page 4: Product Overview
Product Overview Electric Post-Heaters The optional post-heater is used as a heat source for The VER units bring in fresh, outdoor air and remove the building and is integrated into the supply airstream. stale, exhaust air. Prior to discharging the exhaust air, A temperature sensor (with a field-adjustable set point) the energy recovery wheel transfers energy from the is mounted in the supply airstream after the post-heater... -
Page 5: Installation
Installation Unit Weights & Dimensions Electrical Box Electrical Box Return Air Supply Air Intake Discharge Exhaust Air Discharge Optional Return Air Supply Air Plan View Intake Wheel Optional Blower Optional Condensing Section Intake Discharge Exhaust Air Section Section Coil Section Section IG Heater Section Discharge... -
Page 6: Curb Outside Dimensions And Weights
Curb Outside Dimensions and Weights Optional Intake Wheel Optional Blower Optional Condensing Section Section Section Coil Section Section IG Heater Section L* - 3.75 inches W - 3.75 inches Subtract 3.75 inches from dimensions Drain Pan Connection IG Gas Connection W &... -
Page 7: Service Clearances
Service Clearances VER-45, 65 and 90 units require minimum clearances for access on all sides for routine maintenance. Filter replacement, drain pan inspection and cleaning, energy wheel cassette inspection, fan bearing lubrication and ACCESS PANEL belt adjustment are examples of routine maintenance ACCESS PANEL that must be performed. -
Page 8: Access Panel Descriptions And Locations
Access Panel Descriptions and Locations Following is a list of items accessible through the access doors shown on the diagrams. Some items are optional and may not have been provided. #2 – OA Intake Damper and Electric Preheat #6 – Control Panel #8 –... -
Page 9: Recommended Roof Openings
Recommended Roof Opening Handling Refer to weight and dimension data to determine the While this unit was constructed with quality and exact location of the section containing the outdoor dependability in mind, damage still may occur during air discharge opening. If the unit is equipped with handling of the unit for installation. -
Page 10: Roof Curb Mounting
Roof Curb Mounting Rail Mounting and Layout Roof curb details, including duct location dimensions, • Rails designed to handle the weight of the VER are available on VER roof curb assembly instructions. should be positioned as shown on the diagram (rails by others). -
Page 11: Duct Connections
Ductwork Connections Supply Fan The supply fan in this unit is a plenum style fan. The discharge opening dimensions are provided. For proper fan performance, match the duct size to the dimensions listed. Installation of all ducts should be done in accordance with SMACNA. -
Page 12: Electrical Installation
Electrical Installation 1. Determine the Size of the Main Power Lines The unit’s nameplate states the voltage and the unit’s MCA. The main power lines to the unit should be WARNING sized accordingly. The nameplate is located on the The roof lining contains high voltage wiring. To prevent outside of the unit on the control panel side. -
Page 13: Field-Provided Disconnect
Field-Provided Disconnect Typical Control Center Components If field-installing an additional disconnect switch, it 1. Main Disconnect (non-fusible, lockable) is recommended that there is at least four feet of 2. Motor Starter - Exhaust Air Fan service room between the switch and system access 3. -
Page 14: Optional Accessory Wiring Schematics
Optional Accessory Wiring Schematics Remote Panel Unit Interfacing Terminals The remote panel is available with a number of different Heating/Cooling Switches and Night Setback Switch/ UNIT INTERFACING TERMINALS alarm lights and switches to control the unit. The remote Timer panel ships loose and requires mounting and wiring in TERMINAL BLOCKS IN the field. -
Page 15: Piping Installation
Piping Installation Water Coils 1. Piping should be in accordance with accepted Optional Gas Piping industry standards. Pipework should be supported Units with indirect gas-fired furnaces require field- independently of the coils. When installing couplings, supplied and installed gas supply piping. The unit gas do not apply undue stress to the connection connection is ⁄... -
Page 16: Condensate Drain Trap
Condensate Drain Trap This unit is equipped with a stainless steel condensate pan with a 1-inch MPT stainless steel drain connection. It is important that the drain connection be fitted with a P trap to ensure proper drainage of condensate while maintaining internal static pressures. -
Page 17: Unit Overview
Unit Overview Optional Component Overview Basic Unit Economizer The unit is pre-wired such that when a call for outside The energy wheel operation can be altered to take air is made (via field-supplied 24 VAC control signal advantage of economizer operation (free cooling). wired to unit control center), the supply fan, exhaust fan, Two modes are available: and energy wheel are energized and optional motorized... -
Page 18: Frost Control
Frost Control Variable Frequency Drives (VFD) Extremely cold outdoor air temperatures can cause Variable frequency drives are used to control the speed moisture condensation and frosting on the energy of the fan as either multi-speed or modulating control. recovery wheel. Frost control is an optional feature that Multi-speed VFDs reference a contact which can be will prevent/control wheel frosting. -
Page 19: Microprocessor Controller
Microprocessor Controller Hot Gas Reheat Valve The microprocessor controller is specifically designed Units equipped with a reheat coil and programmed to optimize the performance of the use a three-way valve with actuator unit with supplemental to control the supply air discharge heating and cooling. -
Page 20: Cooling System Overview
Cooling System Overview Packaged DX Cooling with Digital Scroll Compressor Condenser Airflow Supply Airflow 1. Compressor 9. Sight Glass 2. High Limit Pressure Switch 10. Liquid Line Filter Drier The switch opens when refrigerant pressure 11. Thermostatic Expansion Valve (TXV) increases above the set point in the liquid line and Each unit is equipped with a TXV on each it then requires a manual reset. -
Page 21: Start-Up
Start-Up Unit SPECIAL TOOLS REQUIRED • Voltage Meter (with wire probes) DANGER • Amperage Meter Electric shock hazard. Can cause injury or death. • Pressure Gauges – (refrigerant) Before attempting to perform any service or • Tachometer maintenance, turn the electrical power to unit to OFF •... -
Page 22: Pre-Start-Up Checklist
Pre Start-Up Checklist Check the fan belt drives for proper alignment and tension. Every installation requires a comprehensive start-up to ensure proper operation of the unit. As part of that Filters can load up with dirt during building process, the following checklist must be completed and construction. - Page 23 Heating System / Electric Heat Pre-Heater L1-L2 Volts L2-L3 Volts L1-L3 Volts Amps Amps Amps Temp. Rise Post-Heater L1-L2 Volts L2-L3 Volts L1-L3 Volts Amps Amps Amps Temp. Rise Cooling System Outdoor Air Temperature Deg F Outdoor Air Relative Humidity % RH Return Air Temperature Deg F...
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Page 24: 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. Frost Control Application / Operation Section: Setting Factory Default Frost Control set point 5°F... -
Page 25: Start-Up Components
Start-Up Components Supply Fan (Plenum Type) The unit contains one plenum supply fan located on Energy Wheel the end of the unit opposite the outdoor air intake and The energy wheel is installed in the unit’s airstream with may optionally have a relief air blower which is referred one half of the wheel in the intake airstream and one to as an exhaust blower in this document. -
Page 26: Vibration
Fan RPM Tighten all fasteners and set screws securely and realign drive pulleys after adjustment. Check pulleys and belts Supply fan and exhaust fan will have an adjustable for proper alignment to avoid unnecessary belt wear, motor pulley (on 15 HP and below) preset at the factory noise, vibration and power loss. -
Page 27: Optional Components Start-Up
Optional Components Start-Up Economizer Relevant Set Points Dirty Filter Sensor 1. MAT SET The mixed air temperature set point after To adjust the sensor, the unit must be running with the energy wheel. The control will modulate the all of the access doors in place, except for the energy wheel to maintain temperature as best as it compartment where the sensor is located (exhaust can. -
Page 28: Frost Control
Frost Control MODULATE WHEEL STOP WHEEL Timed Exhaust OA/RA OA/RA 1. Remove power from unit. Temp Temp Temp Enthalpy Temp Enthalpy Differential Differential 2. Jumper the frost indicating wheel pressure switch in DRYBLB SET the unit control center. MAT SET 3. -
Page 29: Variable Frequency Drives
DRIVE SPEED = 40 Hz. DRIVE SPEED = 40 Hz. DRIVE SPEED = 40 Hz. at Greenheck. This option is not available on the J1000. S5 TO SC CONTACT CLOSED (BY OTHERS) S5 TO SC CONTACT CLOSED (BY OTHERS) DRIVE SPEED = 30 Hz. - Page 30 Modulating Control for Fan Speed Proportional Control (0-10 VDC) Setting Setting Parameter Parameter V1000 J1000 V1000 J1000 A1-01 Access Level B1-17 VFD Start-Up Setting B1-17 VFD Start-Up Setting C6-02 Carrier Frequency C6-02 Carrier Frequency D2-02 Ref Lower Limit D2-02 Ref Lower Limit E2-01 Motor Rated FLA Analog Frequency Reference...
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Page 31: Routine Maintenance
Annually Routine Maintenance It is recommended that the annual inspection and maintenance occur at the start of the cooling season. DANGER After completing the checklist, follow the unit start- Electric shock hazard. Can cause injury or death. up checklist provided in the manual to ensure the Before attempting to perform any service or refrigeration system operates in the intended matter. -
Page 32: Maintenance Procedures
Maintenance Procedures should be one inch (using moderate thumb pressure at mid-point of the drive). Check belt tension two times WARNING during the first 24 hours of operation and periodically thereafter. REFER TO GENERAL SAFETY INFORMATION Fan Motors Do not operate this unit without the filters and birdscreen installed. -
Page 33: Internal Filter
Winterizing Coils Be careful not to unseat the seal by over lubricating or using excessive pressure. A guide to the amount Coil freeze-up can be caused by such things as air of grease to be used is to fill 30% to 60% of available stratification and failure of outdoor air dampers and/ space in the bearing and housing. -
Page 34: Energy Wheel
Energy Wheel Maintenance Cleaning WARNING Maintenance or cleaning of the wheel segments Whenever performing maintenance or inspections, should be done with the segments removed from always disconnect the power source. the wheel cassette to avoid splashing liquids or cleaning agents inside the cabinet. If the energy wheel Inspection appears excessively dirty, it should be cleaned to The wheel should be inspected semiannually... -
Page 35: Unit
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 operate Motor overloaded. Reset VFD and check amps. Check for On/Off switches. Check for correct Electrical. -
Page 36: Refrigeration Circuit
Troubleshooting – Refrigeration Circuit TROUBLESHOOTING NOTE IMPORTANT Do not release refrigerant to the atmosphere! If Before any components are changed on the required service procedures include the adding or refrigeration system, the cause of the failure must be removing of refrigerant, the service technician must identified. - Page 37 Troubleshooting – Refrigeration Circuit Symptom Possible Cause Corrective Action Refrigerant overcharge. Check pressures, charge by subcooling. Condenser fan motor defective. Check fan motor. Compressor starts but Condenser coil inlet obstructed or dirty. Check coil and clearances. Clean coil if necessary. cuts out on Check high side equalized pressures, check thermal expansion high pressure...
- Page 38 Troubleshooting – Refrigeration Circuit Symptom Possible Cause Corrective Action Check for high entering wet bulb temperature, check for Excessive load on evaporator coil. excessive air flow. Compressor is unloaded. Check digital scroll controller signal and solenoid valve. (digital scroll) Check the thermal expansion valve, ensure bulb is insulated. Check superheat.
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Page 39: Energy Wheel
Troubleshooting – Refrigeration Circuit Symptom Possible Cause Corrective Action Thermostat location or controls malfunction. Check thermostat, check heat anticipator setting. Improper refrigerant charge. Check subcooling, verify superheat. Defective low pressure control. Check high or low pressure switch. Compressor Poor air distribution. Check ductwork for recirculating. -
Page 40: Controller Alarms
Troubleshooting - Controller Alarms Troubleshooting - Rotation Sensor The first step in troubleshooting the unit is to check When the unit is first turned on, the LED on the back of the on-board alarm indicators. Several of the electronic the sensor should turn on and stay on with the wheel controls in the unit monitor the system for faults and will running. -
Page 41: Economizer
Press enter twice to clear the alarm. If the issue Refer to the following Installation, Operation and persists, consult the factory. Maintenance Manuals for additional details. All are available at www.greenheck.com Clearing Alarms • Centrifugal Fan Once the alarm has been identified and the cause has been removed (e.g. -
Page 42: Component Location
Component Location 1. Supply blower 8. Coil section optional equipment. • Plenum fan Not all items depicted above. • Adjustable motor mount for belt tensioning • Packaged or split DX cooling coil – DX • Adjustable sheaves for speed control •... -
Page 43: Maintenance Log
Maintenance Log Date ___________________Time _____________ AM/PM Date ___________________Time _____________ AM/PM Notes: ___________________________________________ Notes: ___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ Date ___________________Time _____________ AM/PM Date ___________________Time _____________ AM/PM Notes: ___________________________________________ Notes: ___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ Date ___________________Time _____________ AM/PM... -
Page 44: Our Commitment
Our Commitment As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice. Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in the Library under Warranties. Greenheck catalog VersiVent provide additional information...
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