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Energy Core Ventilator

19

®

Maintenance Procedures:
Lubrication

Check all moving components for proper lubrication. 
Apply lubrication where required. Any components 
showing excessive wear should be replaced to maintain 
the integrity of the unit and ensure proper operation.

Dampers

Check all dampers to ensure they open and close 
properly and without binding. Backdraft dampers can 
be checked by hand to determine if blades open and 
close freely. Apply power to motorized dampers to 
ensure the actuator opens and closes the damper as 
designed.

Fan Motors/Fans

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 cooling. Never 
wash-down motor with high pressure spray. Greasing 
of motors is only intended when fittings are provided. 
Many fractional motors are permanently lubricated for 
life and require no further lubrication.
To access the fan motors on units with multiple supply 
and exhaust fans (ECV-30 and ECV-40). The fan closest 
to the outside of the unit can be accessed using the 
blower access door.  The interior fans and motors will 
need to be accessed from inside the unit. First remove 
the energy cores and filters from the unit, next remove 
the core support that separates the supply and exhaust 
air streams on the blower panel.  Next remove the intake 
cone panel that houses both the intake cones for the 
exhaust air stream (upper rectangular panel). Once this 
is removed, you should have access to the exhaust 
fan that is located on the control side of the housing.  
Reinstall intake cone panel and then remove the lower 
intake cone panel (lower rectangular panel). This will 
allow access to the supply blower that is located on the 
control side of the housing.  Replace panel after service, 
reinstall core support that was removed, then reinstall 
cores and filters.

Fan Wheel & Fasteners

Wheels require very little attention when moving clean 
air. Occasionally oil and dust may accumulate on the 
wheel causing imbalance. When this occurs the wheel 
and housing should be cleaned to assure smooth and 
safe operation. Inspect fan impeller and housing for 
fatigue, corrosion or wear.
Routinely check all fasteners, set screws and locking 
collars on the fan, motor base and accessories for 
tightness. A proper maintenance program will help 
preserve the performance and reliability designed into 
the fan.

External Filter Maintenance

Aluminum mesh, 2-inch deep filters are located in the 
supply weatherhood (if the weatherhood option was 

Routine Maintenance

DANGER

Electric shock hazard. Can cause injury or death. 
Before attempting to perform any service or 
maintenance, turn the electrical power to unit to OFF 
at disconnect switch(es). Unit may have multiple 
power supplies.

CAUTION

Use caution when removing access panels or other 
unit components, especially while standing on a 
ladder or other potentially unsteady base. Access 
panels and unit components can be heavy and 
serious injury may occur.

Once the unit has been put into operation, a routine 
maintenance program should be set up to preserve 
reliability and performance. Items to be included in this 
program are:

Lubrication 

Apply lubrication where required

Dampers 

Check for unobstructed operation

Motors 

Check for cleanliness

Blower Wheel & Fasteners 

Check for cleanliness 
Check all fasteners for tightness 
Check for fatigue, corrosion, wear

External Filter 

Check for cleanliness - clean if required

Internal Filter 

Check for cleanliness - replace if required

Door Seal 

Check if intact and pliable

Summary of Contents for ECV Series

Page 1: ...plicable Follow the Canadian Electrical 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...

Page 2: ...contactor in the air handler closes to start the unit Summer Operation Outdoor air is preconditioned temperature and moisture levels are decreased by the transfer of energy from the cooler drier retu...

Page 3: ...nt condensation Remove any accumulations of dirt water ice or snow and wipe dry before moving to indoor storage To avoid condensation allow cold parts to reach room temperature Leave coverings loose t...

Page 4: ...AIR INTAKE OUTDOOR AIR INTAKE A B C EXHAUST AIR DISCHARGE SUPPLY AIR DISCHARGE NON ELECTRICAL SIDE D G E F Top and Bottom Connections Top and End Connections OUTDOOR AIR INLET A B C EXHAUST AIR DISCH...

Page 5: ...Discharge End Recommended Minimum Recommended Minimum Weatherhood Yes Weatherhood No Weatherhood Yes Weatherhood No ECV 10 30 20 30 No Access Required 33 No Access Required 24 No Access Required ECV...

Page 6: ...r replacement and maintenance Sufficient space should be provided on the side of the unit for routine service and component removal should that become necessary Lifting WARNING All factory provided li...

Page 7: ...et the Unit Lift unit to a point directly above the curb and duct openings Guide unit while lowering to align with duct openings Roof curbs fit inside the unit base Make sure the unit is properly seat...

Page 8: ...52 x 16 6 Recommended duct sizes are based on velocities across the cfm range of each model at approximately 800 feet per minute FPM at minimum airflow and up to 1600 fpm at maximum airflow Recommende...

Page 9: ...em Voltage Supply See voltage use range on the rating plate Measure and record each supply leg voltage at all line disconnect switches Readings must fall within the allowable range on the rating plate...

Page 10: ...to switch Dirty filter light Economizer light Frost control light On Off Auto Switch Indictor Light Wiring Typical Control Center Components 1 Main Disconnect nonfusible lockable 2 Motor Starter Exhau...

Page 11: ...VG reference unit wiring diagram ST2 M1 WHITE T1 T3 SUPPLY FAN MOTOR 15 16 0 10VDC BLACK POT BLACK 2CBL M1 RED RED CLOSED 115 120V OPEN 208 230 277V M2 EXHAUST FAN MOTOR 17 18 0 10VDC POT BLACK RED RE...

Page 12: ...ature and enable the preheater if required If the temperature falls below the set point the electric preheater will turn on Access to the electric preheat is through the outdoor air filter access door...

Page 13: ...Unit Serial Number ________________________________ e g 04C99999 or 10111000 Start Up Date ________________________________ Start Up Personnel Name___________________________ Start Up Company ________...

Page 14: ...thermostat 36 F Differential 2 F Timer Refer to page 17 Economizer Application Operation section Yes No Economizer temperature Set point 65 F Offset 20 F Differential 2 F Yes No Economizer enthalpy S...

Page 15: ...AUTION When operating conditions of the fan are to be changed speed pressure temperature etc consult Greenheck to determine if the unit can operate safely at the new conditions Direction of Fan Wheel...

Page 16: ...CHANGE STORED displays 9 Press enter to return the current menu parameter 10 Press escape to return to the current menu parameter When values are displayed pressing and holding the or button causes t...

Page 17: ...PPM CO2 Variable Frequency Drive The ECV 20 and ECV 30 are wired to the Variable Frequency Drive VFD Refer to the Variable Frequency Drive section for control sequence and programming Timer Scale Time...

Page 18: ...ctory set points refer to Yaskawa VFD instruction manual which can be found online at www drives com MAMBMC RP H1 SC HC S7 S6 S5 S4 S3 S2 S1 MP AC AM AC V A2 A1 PC P2 P1 IG S S R R V1000 MAMBMC AC AM...

Page 19: ...er rectangular panel This will allow access to the supply blower that is located on the control side of the housing Replace panel after service reinstall core support that was removed then reinstall c...

Page 20: ...power to the unit Remove access panel Removing the energy recovery core Once the energy core access doors are removed the core can be pulled from the housing To replace the core reverse the procedure...

Page 21: ...consult the factory Clearing Alarms Once the alarm has been identified 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...

Page 22: ...w prior to contacting the factory please determine the following information Airflow problems can often be tied back to improper ductwork installation Be sure to install ductwork in accordance with SM...

Page 23: ...power too low See specifications and catalog for fan curves to determine if horsepower is sufficient Shorted windings in motor Replace motor Low airflow cfm Unit damper not fully open Adjust damper li...

Page 24: ...Resources Library Literature Greenheck catalog Energy Core Ventilators Model MiniCore and ECV provides additional information describing the equipment fan performance available accessories and specif...

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