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Accessing the Energy Recovery Wheel

Disconnect power to the ERVe. Open door labeled 
“Energy Wheel Cassette Access”.

Unplug the wheel drive motor.

Pull the wheel cassette halfway out.

Energy Recovery Wheel Maintenance

Annual inspection of the energy recovery wheel is 
recommended. Units ventilating smoking lounges 
and other non-clean air spaces should have energy 
recovery wheel inspections more often based upon 
need. Inspections for smoke ventilation applications 
are recommended bimonthly to quarterly until a regular 
schedule can be established.

Removing the Energy Recovery Wheel Segments 
(stainless steel rim)

Steel retainers are located on the inside of the wheel 
rim. Push the retainer towards the center of the wheel, 
then lift up and away to release segments.

Wheel segment removed

Bracket Segment 
Retainer

Lift away from 
segment

Catch Segment
Retainer

Push toward center

Center of Wheel

Spoke

Inside of wheel rim

Cleaning the Energy Recovery Wheel

If the wheel appears excessively dirty, it should be 
cleaned to ensure maximum operating efficiency. Only 
excessive buildup of foreign material needs to be 
removed. Discoloration and staining of energy recovery 
wheel does not affect its performance.

Thoroughly spray wheel matrix with household cleaner 
such as Fantastik

®

 or equivalent. Gently rinse with 

warm water and using a soft brush remove any heavier 
accumulation. A detergent/water solution can also 
be used. Avoid aggressive organic solvents, such as 
acetone. The energy recovery wheel segments can be 
soaked in the above solution overnight for stubborn dirt 
or accumulation.

After cleaning is complete, shake the excess water 
from the wheel or segments. Dry wheel or segments 
before placing them back into the cassette. Place wheel 
or segments back into cassette by reversing removal 
procedures.

CAUTION

Do not clean energy recovery wheel segments with 
water in excess of 140ºF (60ºC).

Do not dry energy recovery wheel segments in air in 
excess of 140ºF (60ºC).

The use of a pressure washer to clean segments is 

not recommended

. Damage could result.

Energy Recovery Wheel Belt

Inspect belts each time 
filters are replaced. Belts 
that look chewed up 
or are leaving belt dust 
near the motor pulley 
may indicate a problem 
with the wheel. Be sure 
to inspect wheel for 
smooth and unrestricted 
rotation. If a belt requires 
replacement, contact 
the local Greenheck 
representative. Instructions 
for replacement will ship with the new belt.

Energy Recovery Wheel Bearing

In the unlikely event that 
a wheel bearing fails, 
the bearing is behind 
a removable plate on 
the wheel support 
beam. Contact the local 
Greenheck representative 
for detailed instructions 
on how to replace 
the bearing.

Wheel Bearing

Wheel Belt & Pulley

IMPORTANT

Place retainers back in the original position before 
rotating the energy recovery wheel, otherwise damage 
to retainer will occur.

Energy Recovery Ventilator

23

®

Summary of Contents for ERVe Series

Page 1: ...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 pow...

Page 2: ...0 Routine Maintenance 21 23 Troubleshooting Economizer Alarms 24 Air ow 25 Unit 25 27 Maintenance Log Backcover Our Commitment Backcover Unit Overview Basic Unit The ERVe units are prewired such that...

Page 3: ...ter ice or snow and wipe dry before moving to indoor storage To avoid condensation allow cold parts to reach room temperature Leave coverings loose to permit air circulation and to allow for periodic...

Page 4: ...es Door handles hinges and other protrusions are not included in the dimensions above Dimensions are rounded up to the nearest 1 inch Duct Dimensions Unit Size A B C D E F G H ERVe 20 11 8 18 0 12 2 1...

Page 5: ...h must be maintained between the outside edges of the duct and combustible material in accordance with NFPA Standard 90A Unit Size A B Approx Weight lbs ERVe 20 22 37 950 ERVe 35 25 44 5 1270 ERVe 45...

Page 6: ...53 48 286 106 ERVe 45 67 353 55 478 67 353 55 286 120 ERVe 55 78 228 65 416 78 228 65 224 148 All dimensions are in inches Weights are for 14 inch high GKD type curbs W L W WF LF L Curb Outside Dimens...

Page 7: ...based on 100 effective duct length requirements as prescribed in AMCA Publication 201 Calculated values have been rounded up to nearest foot Ductwork Connections Examples of poor and good fan to duct...

Page 8: ...le in the cabinet bottom and wire to the disconnect switch Seal penetration in cabinet bottom to prevent leakage The electric supply to the unit must meet stringent requirements for the system to oper...

Page 9: ...carrying the supply power Make sure that eld supplied conduit does not interfere with access panel operation If wire resistance exceeds 0 75 ohms an industrial style plug in relay should be added to...

Page 10: ...tion sensor light NC C NO NC C NO SUPPLY DIRTY FILTER SWITCH EXHAUST DIRTY FILTER SWITCH DIRTY FILTER HOT COMMON 24V SEC Dirty Filter Indicator powered by others C C C R R R G 4 Y1 6 7 12 S6 ECONOMIZE...

Page 11: ...ptured Exhaust Only Operation This option allows for the exhaust fan to run continuously while the supply fan is off Frost Control Extremely cold outdoor air temperatures can cause moisture condensati...

Page 12: ...eel should stop rotating the sensor will close a set of contacts in the unit control center Field wiring of a light or other alarm between terminals R and 12 in the unit control center will notify mai...

Page 13: ...__________________________ Phone Number _______________________________ Pre Start Up Checklist check as items are completed Disconnect and lock out all power switches Remove any foreign objects that a...

Page 14: ...s No N A Yes No OA Dirty Filter Sensor Yes No N A Yes No EA Dirty Filter Sensor Yes No N A Yes No CO2 Sensor Yes No N A Yes No Service Outlet Yes No N A Yes No Remote Control Panel Yes No N A Variable...

Page 15: ...nd belts for proper alignment to avoid unnecessary belt wear noise vibration and power loss Motor and drive shafts must be parallel and pulleys in line see diagrams in this section Fan Belt Installati...

Page 16: ...by opening door slightly remove lters if necessary to view wheel the wheel should rotate freely at about 20 40 RPM Energy Recovery Wheel The ERVe models contain a total energy recovery wheel The whee...

Page 17: ...ton to increase change the displayed parameter value 7 Press enter to accept the displayed value and store it in non volatile RAM 8 CHANGE STORED displays 9 Press enter to return the current menu para...

Page 18: ...PARAMETER A1 01 CHANGE TO 2 PARAMETER d1 02 FOR NEW 40Hz SETTING PARAMETER d1 01 FOR NEW 60Hz SETTING PARAMETER d1 03 FOR NEW 30Hz SETTING PARAMETER A1 01 CHANGE TO 0 USER TO PROVIDE CONTACTS AND ISO...

Page 19: ...multiple speed settings Open Drive runs at 60 Hz SC to S4 Drive runs at 40 Hz SC to S5 Drive runs at 30 Hz CO2 Sensor Set Point Control A carbon dioxide sensor is provided from the factory for field m...

Page 20: ...n 0 6 C6 02 Carrier Frequency 2 D2 01 Ref Upper Limit 40 or 50 D2 02 Ref Lower Limit 5 E2 01 Motor Rated FLA Motor FLA E2 03 Motor No Load Current Must be less than FLA H1 02 Multi Function Input Term...

Page 21: ...tors Motor maintenance is generally limited to cleaning and lubrication Cleaning should be limited to exterior surfaces only Removing dust and grease buildup on the motor housing assists proper motor...

Page 22: ...ds upon the cleanliness of the incoming air These lters should be cleaned prior to start up Clean lters by rinsing with a mild detergent in warm water Outdoor Air Filters Access to the outdoor air lte...

Page 23: ...sh remove any heavier accumulation A detergent water solution can also be used Avoid aggressive organic solvents such as acetone The energy recovery wheel segments can be soaked in the above solution...

Page 24: ...denti ed and the cause has been removed e g replaced faulty sensor the alarm can be cleared from the display To clear an alarm perform the following 1 Navigate to the desired alarm 2 Press the enter 3...

Page 25: ...information Air ow problems can often be tied back to improper ductwork installation Be sure to install ductwork in accordance with SMACNA and AMCA guidelines Unit 1 Unit 2 Unit 3 Unit 4 Model Number...

Page 26: ...lower than design If higher ductwork should be improved If lower fan rpm should be lower Blower rotation is incorrect Check rotation and reverse if necessary Motor voltage incorrect Check motor namepl...

Page 27: ...heel motor overloads are tripping due to rubbing between wheel and air seals Recheck air seals make sure they are not too tight See Energy Recovery Wheel under Unit Start Up Section Excessive noise or...

Page 28: ...tes ___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ __...

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