Greenheck MiniVent-450 Installation Manual

Page 1

Part #459023

Energy Recovery Ventilators

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!

Model MiniVent-450 & 750

Energy recovery wheels are certiﬁed by the AHRI Air-to-Air Energy Recovery Ventilation Equipment Certiﬁcation Program in accordance with AHRI Standard 1060. Actual performance in packaged equipment may vary.

Certiﬁed Ratings are available in the Certiﬁed Product Directory at www.ahridirectory.org

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. 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.

Energy Recovery Ventilators • MiniVent

Page 2

Receiving

Upon receiving the product, check to make sure all items are accounted for by referencing the bill of lading to ensure all items were received. Inspect each crate for shipping damage before accepting delivery. Notify the carrier if any damage is noticed. The carrier will make notiﬁcation on the delivery receipt acknowledging any damage to the product. All damage should be noted on all the copies of the bill of lading which is countersigned by the delivering carrier. A Carrier Inspection Report should be ﬁlled out by the carrier upon arrival and reported to the 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. If any items are missing, report shortages to your local representative to arrange for obtaining missing parts. Sometimes it is not possible that all items for the unit be shipped together due to availability of transportation and truck space. Conﬁrmation of shipment(s) must be limited to only items on the bill of lading.

Handling

Units are to be rigged and moved by the provided lifting points or fork lifting points (see page 4). Handle each piece in such a way as to keep from scratching or chipping the coating. Damaged ﬁnish may reduce ability of the unit to resist corrosion.

Storage

Units are protected against damage during shipment. If the unit cannot be installed and operated immediately, precautions need to be taken to prevent deterioration of the unit during storage. The user assumes responsibility of the unit and accessories while in storage. The manufacturer will not be responsible for damage during storage. These suggestions are provided solely as a convenience to the user.

Inspection and Maintenance during Storage

While in storage, inspect units once per month. Keep a record of inspection and maintenance performed

If moisture or dirt accumulations are found on parts, the source should be located and eliminated. At each inspection, rotate all moving components by hand ten to ﬁfteen revolutions to distribute lubricant on motor and bearings. If paint deterioration begins, consideration should be given to touch-up or repainting. Units with special coatings may require special techniques for touch-up or repair.

Machined parts coated with rust preventive should be restored to good condition promptly if signs of rust occur. Immediately remove the original rust preventive coating with petroleum solvent and clean with lint-free cloths. Polish any remaining rust from surface with crocus cloth or ﬁne emery paper and oil. Do not destroy the continuity of the surfaces. Wipe clean thoroughly with Tectyl® 506 (Ashland Inc.) or the equivalent. For hard to reach internal surfaces or for occasional use, consider using Tectyl® 511M Rust Preventive or WD-40® or the equivalent.

Table of Contents

General Safety Information . . . . . . . . . . . . . . 2

Receiving, Handling, Storage . . . . . . . . . . . . .2

Dimensional Data and Weights . . . . . . . . . . . .3

Service Clearances and Access Panel Locations . . 3

Intake and Discharge Locations . . . . . . . . . . . 4

Installation Hang Mounting with Hanging Vibration Isolators 4 Base Mounting with Base Vibration Isolators . . .5

Duct Connections . . . . . . . . . . . . . . . . . 5

Electrical Connections . . . . . . . . . . . . . . . . 6

Wiring Schematics

Standard Wiring Schematic . . . . . . . . . . . . 6

MiniVent-450 Motion Sensor. . . . . . . . . . . .6

Independent Fan Control - Variable Speed . . . . 7

Timed Frost Control . . . . . . . . . . . . . . . . 7

Timed Frost Control with Speed Controllers . . . 7 System Start-Up

General . . . . . . . . . . . . . . . . . . . . . . . 8

Energy Wheel . . . . . . . . . . . . . . . . . . . .8

Blower Wheel Rotation . . . . . . . . . . . . . . .8

Fan RPM . . . . . . . . . . . . . . . . . . . . . . 8

Motor . . . . . . . . . . . . . . . . . . . . . . . . 8

Routine Maintenance

General . . . . . . . . . . . . . . . . . . . . . . . 9

Fasteners and Set Screws . . . . . . . . . . . . . 9

Removal of Dust and Dirt . . . . . . . . . . . . . 9

Internal Filters . . . . . . . . . . . . . . . . . . . 9

Energy Wheel Maintenance . . . . . . . . . . 9-10

Unit Documentation Record . . . . . . . . . . . . 10

Troubleshooting . . . . . . . . . . . . . . . . . . . 11

Maintenance Log . . . . . . . . . . . . . .Backcover

Warranty . . . . . . . . . . . . . . . . . . .Backcover

Energy Recovery Ventilators • MiniVent

Page 3

Dimensional Data and Weights Service Clearances and Access

Outdoor Air

Discharge

Exhaust

Discharge

Outdoor Air

Intake

Front View

Outdoor Air

Discharge

Outdoor Air

Intake

Front View

Outdoor Air

Intake

Exhaust Discharge

Back View

Outdoor Air Discharge

Energy Wheel

Front View

MiniVent A B C

450 40 29 18 150

750 46 36 22 210

All dimensions are in inches.

Exhaust Intake

Weight

(lbs.)

Panel Locations

Recommended Service Clearances

The MiniVent requires minimum clearances to perform routine maintenance, such as ﬁlter replacement, energy wheel cassette and fan inspection. Fan and motor assemblies, energy recovery wheel cassette and ﬁlter sections are provided with a service door or panel for proper component access.

Access Panel Locations

1. •Outdoorandexhaustfansandmotor

 •Electricalconnection(115volt)

2. •Energywheelcassette

 •Internallters

MiniVent A B

450 25 15 750 31 21

All dimensions are in inches.

Outdoor Air

Discharge

Intake

Front View

Exhaust

Intake

Back View

Exhaust

Discharge

Exhaust Discharge

Exhaust Intake

Cassette

Slides Out

Supply Discharge

Supply Intake

MiniVent D E F G H J K L M N P Q

450 10 8 12 6 4

⁄8 17⁄8 6 1 6 1 31⁄81⁄8

750 9 10 18 7 33⁄4 13⁄4 51⁄8 1 51⁄8 1 33⁄4 13⁄8

All dimensions are in inches.

Energy Recovery Ventilators • MiniVent

Page 4

Intake and Discharge Locations

Flat Washer

Lock Washer

Nut

Flat Washer

Lock Washer

Hanger Bracket, factory mounted

Isolator

Threaded Rod, provided by others 3/8 inch (MiniVent-450) 1/2 inch (MiniVent-750)

Installation

Intake and discharge locations are shown. Both intake locations are capable of being ﬁeld relocated to suit installation needs (see optional locations).

Outdoor Air

Discharge

Exhaust Air

Intake

Intake (optional)

Discharge

Intake

The system design and installation should follow accepted industry practice, such as described in the ASHRAE Handbook and SMACNA.

Minimum service clearance should be provided on the side of the unit for routine service and component removal should it become necessary.

Before beginning installation see page 3 for detail on appropriate service clearances.

Hang Mounting with Hanging Vibration Isolators

• Thehangingisolatorkitincludesfour(4)isolators

and required hardware.

• Thehangermountingbracketsarefactory

mounted.

• Locatethesupportrodsasshowninthedrawing.

• Assembleeachisolatorasshown.

Intake (optional)

Changing the discharge location

Step 1 - remove the metal

cover for optional intake by unfastening the four sheet metal screws holding it in place.

Remove the intake duct collar by unfastening the sheet metal screws holding it in place.

Step 2 - place the duct collar over the newly uncovered intake opening.

Fasten the intake duct collar in place.

Place the metal cover over the original intake and fasten into place. Be sure that the corner angle ﬁts correctly around the unit corner.

Intake Cover

Intake Duct

Collar

MiniVent A B C

450 37 750 43

All dimensions are in inches.

⁄8 267⁄8 20

⁄8 327⁄8 24

Isolator Assembly

Electrical and Fan Access Panel (underside)

Energy Recovery Ventilators • MiniVent

Page 5

Base Mounting with Base Vibration

3/8 inch Bolt

Flat Washer

Lock Washe

Isolator

Base Mounting Bracket

3/8 inch Bolt

Flat Washer

Lock Washe

Isolator

Base Mounting Bracket

Isolation

• Thebaseisolatorskitincludesfour(4)isolators, four (4) brackets and required hardware.

• Removethehangingbracketsfromeachcornerof

the MiniVent. These brackets are shipped mounted from the factory. Replace with the base brackets provided.

• RotatetheMiniVent180degrees,sotheelectrical

and fan component panel is accessible from the top. The corners, where the brackets are fastened, are now closest to the mounting surface.

• Assembleandmounttheisolatorsasshowninthe

ﬁgures below.

Note: The hanging and base mounting brackets are fastened to the same unit corners.

Duct Connections

Examples of good and poor fan-to-duct connections are shown below. Airﬂow out of the fan should be directed straight or curve the same direction as the fan wheel rotates. Poor duct installation will result in low airﬂow, loud noise and excessive vibrations.

4x Wheel Diameter

MiniVent

POOR

Less

than 4x Wheel Diameter

Recommended Discharge Duct Size and Length

GOOD

Electrical

Fan Access Panel

and

Isolator Assembly

MiniVent

ERV

Blower Size

Duct

Size

450 8 10 x 8 32

750 10 10 x 10 40

All dimensions are in inches.

Straight Duct

Length

Assembled and Mounted Isolator Detail

Energy Recovery Ventilators • MiniVent

Page 6

Electrical Connections

Wiring Schematics

Before connecting power to the unit, read and understand the following instructions and wiring diagrams. Complete wiring diagrams are attached inside the blower door of the unit.

All wiring should be done in accordance with the National Electrical Code ANSI/NFPA 70 latest edition and any local codes that may apply. In Canada, wiring should be done in accordance with the Canadian Electrical Code. The equipment must be properly grounded.

CAUTION

If any of the original wire must be replaced, the replacement wire must have a temperature rating of at least 105ºC.

DANGER

High voltage electrical input is required for this equipment. This work should be performed by a qualified electrician.

Electrical Connection Location

MiniVent A B

450 12.5 22.0

750 15.5 30.0

All dimensions are in inches.

Electrical Connection

CAUTION

Unit shall be grounded in accordance with the National Electrical Code (NEC).

Standard Wiring Schematic

115 VOLT INPUT POWER

(GROUND)

(NEUTRAL)

(HOT)

SWITCH BY OTHERS

M1 Energy Wheel Motor M2 Exhaust Blower Motor M3 Supply Blower Motor

INTERNAL JUNCTION BOX

MiniVent-450 Motion Sensor Wiring

Model MBW is a wall mounted passive infrared motion detector that automatically turns on the MiniVent when a change in temperature is sensed. The MiniVent will automatically turn off after the room had been vacant past the adjustable time delay setting of 1 minute to 20 minutes. The detector must be installed in the lineof-sight of the subject personnel and requires a 2x4 handy box to be supplied by others.

Wheel and Filter Access

Sequence for wiring MiniVent unit:

1. The unit’s nameplate contains the voltage and total amperage required. The wire supplying power to the unit should be sized accordingly.

2. The main power line should be connected to the appropriate leads in the unit.

Power may be routed to the MiniVent through

the opening on the underside of the unit. The locations for the opening are provided in the ﬁgure to the right.

3. Refer to the wiring diagrams in this manual or in the unit for controlling the MiniVent.

115 VOLT INPUT POWER

(NEUTRAL)

(HOT)

(GROUND)

FACTORY WIRING

FIELD WIRING

INTERNAL JUNCTION BOX

(GROUND)

M1 Energy Wheel Motor M2 Exhaust Blower Motor M3 Supply Blower Motor

Energy Recovery Ventilators • MiniVent

Page 7

Independent Fan Control — Variable Speed

Timed Exhaust Frost Control with Speed Controllers

115 VOLT INPUT POWER

(HOT) (NEUTRAL) (GROUND)

VARIABLE SPEED

CONTROL (FURNISHED)

VARIABLE SPEED

CONTROL (FURNISHED)

FACTORY WIRING

FIELD WIRING

ON OFF

M1 Energy Wheel Motor M2 Exhaust Blower Motor M3 Supply Blower Motor

INTERNAL JUNCTION BOX

REMOTE PANEL

115 VOLT INPUT POWER

(HOT)

TEMPERATURE

TIMER

CONTROLLER

A1 15

0.6

0.8

1.0

0.4

0.2

0.6

0.8

0.4

1.0

0.2

A218

(NEUTRAL)

(GROUND)

INTERNAL JUNCTION BOX

SPEED CONT.

M1 Energy Wheel Motor M2 Exhaust Blower Motor M3 Supply Blower Motor

Timed Exhaust Frost Control

REMOTE PANEL

115 VOLT INPUT POWER

TIMER

TEMPERATURE CONTROLLER

15B1

0.6

0.8

1.0

0.4

0.2

0.6

0.8

1.0

0.4

0.2

16 A2

(HOT)

(GROUND)

(NEUTRAL)

M1 Energy Wheel Motor M2 Exhaust Blower Motor M3 Supply Blower Motor

INTERNAL JUNCTION BOX

Energy Recovery Ventilators • MiniVent

Page 8

System Start-Up

Forward Curved

Airﬂow

WARNING

Do not operate energy recovery ventilator without the filters and birdscreens installed. They prevent the entry of foreign objects such as leaves, birds, etc.

Do not remove access panels or other components while standing on a ladder or other unsteady base. Access panels and components are heavy and serious injury may occur.

For proper unit function and safety, follow everything in this startup procedure in the order presented. Startup is to be done after electrical connections are complete.

SPECIAL TOOLS

•Voltmeter

•Inclinemanometerorequivalent

•Tachometer

•Amperagemeter

General

Check all fasteners and set screws for tightness. This is especially important for bearings and fan wheels Also, if dampers are not motorized, check that they open and close without binding.

Check Voltage

Before starting the unit compare the supplied voltage with the unit’s nameplate voltage and the motor voltage.

Energy Recovery Wheel

First, follow the instructions on page 9 for pulling the energy recovery cassette halfway out of the unit.

Air Seals — turn the energy recovery wheel by hand to verify free operation. Check that the air seals, located around the outside of the wheel and across the center (both sides of wheel), are secure and in good condition.

Air seals which are too tight will prevent proper rotation of the energy recovery wheel. Recheck the air seals for tightness. Air seal clearance may be checked by placing a sheet of paper, like a feeler gauge, against the wheel face. To adjust the air seals, loosen all eight seal retaining screws. These screws are located on the bearing support that spans the length of the cassette through the wheel center. Tighten the screws so the air seals tug slightly on the sheet of paper as the wheel is turned.

Replace cassette into unit, plug in wheel drive, replace access door and apply power. Observe that the wheel rotates freely. If wheel does not rotate or is binding, remove the cassette; instructions provided on page 9.

Check Blower Wheel Rotation

First, hand rotate the blower to ensure that the wheel is not rubbing against the scroll. If the blower is rotating in the wrong direction, the unit will move some air but not perform properly.

To check the rotation, open the blower access panel, which is labeled either supply or exhaust, and run the blower momentarily to determine the rotation.

Forward Curved

Air Volume Check and Measurement

Along with the building balance, the unit’s airﬂow (cfm) should be measured and compared with its rated air volume. The MiniVent is direct drive, therefore balancing dampers or speed controls are required for airﬂow balancing. Air volume measurement must be conducted with access doors on the unit.

The most accurate way to measure the air volume is by using the pitot traverse method in the ductwork away from the blower. Other methods can be used but should be proven and accurate.

To adjust the air volume, change the fan rpm or the system static pressure. See Troubleshooting section in this guide.

With all access panels on the unit, compare measured amps to the motor nameplate full load amps and correct if overamping.

Measure Motor Voltage, Amperage and Fan RPM

All access doors must be installed, run the measurement leads through the provided electrical access hole in the bottom access panel of the MiniVent. Measure and record the input voltage and motor amperage(s).

To measure the fan rpm, the blower door will need to be removed. Minimize measurement time because the motor may overamp with the door removed. Do not

operate units with access doors/panels open as the motors will overload.

With all access panels on the unit, compare measured amps to the motor nameplate full load amps and correct if overamping.

Energy Recovery Ventilators • MiniVent

Page 9

Routine Maintenance

WARNING

Disconnect all electrical power to the MiniVent prior to inspection or servicing. Failure to comply with this safety precaution could result in serious injury or death. Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.

After the MiniVent has been put into operation, an annual inspection and maintenance program should be set-up to preserve reliability and performance.

Include the following items in this program:

 •General  •Fastenersandsetscrews  •Removalofdustanddirt  •Filtermaintenance  •Energywheelcassette

General

The MiniVent energy recovery ventilator requires very little maintenance. However, small problems left unchecked, over time, could lead to loss of performance or early motor failure. We recommend that the unit be inspected once or twice a year.

The motor should be checked for lubrication at this time. Lubricate only those motors which have an oil hole provided. A few drops of all-purpose oil (SAE 20) will be sufﬁcient.

Fasteners and Set Screws

Any fan vibration has a tendency to loosen mechanical fasteners. A periodic inspection should include checking all fasteners and set screws for tightness. Particular attention should be paid to set screws attaching the fan wheel to the shaft and the shaft to the bearings. Loose bearing set screws will lead to premature failure of the fan shaft.

Removal of Dust and Dirt

The fan motor and wheel(s) should be checked for dust and dirt accumulation. Dirt buildup clogs cooling openings on the motor housing and causes motor overheating. Dirt buildup can contaminate bearing lubricant and collect on fan wheel blades causing loss of performance or premature failure. Cleaning can be accomplished by brushing off any dust that may have accumulated. Under no circumstances should motors or bearings be sprayed with steam or water. Even ﬁltered units can accumulate build up and should be checked when cleaning ﬁlters.

Maintenance to these components is achieved through the provided access panels.

Internal Filter Maintenance

Opening the access panels labeled “Filter Access” provides access to the oneinch deep, pleated 30% efﬁcient ﬁlters. These ﬁlters should be checked regularly and cleaned or replaced as needed.

MiniVent

450 14 x 20 2 750 16 x 20 2

Internal

Filter Size

Quantity

Energy Wheel Maintenance

Annual inspection of the energy recovery wheel is recommended. MiniVent units ventilating smoking lounges and other non-clean air spaces should have energy recovery wheel inspections more often based upon need.

Accessing the Energy Recovery Wheel

Disconnect power to the MiniVent. Remove access panel labeled “Energy Wheel Cassette Access”. Unplug the wheel drive motor. Pull the cassette halfway out as shown.

Removing the Energy Recovery Wheel

First, remove the drive belt and the collars on both bearings. On the pulley side of the cassette remove the four (4) fasteners that hold the bearing support channel in place. Once the bearing support is removed the wheel can be pulled from the cassette. To replace the wheel reverse this procedure.

Recommended Cleaning Procedure for Energy Recovery Wheels

First, remove the energy recovery wheel by following the instructions on this page.

Wash the segments or small wheels with a non-acid based (evaporator) coil cleaner or alkaline detergent solution, such as 409™ or Fantastik™. Non-acid based coil cleaner such as KMP Acti-Clean AK-1 concentrate in a 5% solution has been demonstrated to provide excellent results. Do not use acid based cleaners, aromatic solvents, temperatures in excess of 140ºF or steam; damage to the wheel may result. Soak in the cleaning solution until dirt, grease, and/ or tar deposits are loosened. Internal heat exchange surfaces may be examined by separating the polymer strips by hand.

Note: Some staining of the desiccant may remain and is not harmful to performance.

After soaking, rinse the dirty solution from the wheel until the water runs clear. Allow excess water to drain from the media prior to reinstalling the wheel in the cassette. A small amount of water remaining in the wheel will be dried out by the airﬂow.

Energy Recovery Ventilators • MiniVent

Page 10

Frequency of Energy Wheel Cleaning

A regular cleaning cycle must be established for the energy recovery wheel in order to maintain optimum sensible and latent energy transfer. In reasonably clean environments such as schools, ofﬁces or retail stores, the energy recovery wheel should be inspected annually and cleaned as needed.

For applications experiencing unusually high levels of tobacco smoke, such as lounges, nightclubs, bars and restaurants, washing of the energy recovery wheel every three months may be necessary to maintain latent energy (water vapor) transfer efﬁciency.

Failure to follow a regular cleaning cycle for the energy recovery wheel can result in signiﬁcant energy transfer performance losses.

Energy Recovery Wheel Belt Drive

Drive belt(s) should be inspected annually. Normal operation eventually causes stretching or wear on the belt(s). Once this occurs the belt(s) should be replaced.

Replacement or spare energy wheel drive belt kits are available and ship with their own instructions. The serial number and date code of the energy wheel cassette are required to obtain the proper replacement belt kit from the factory. The energy wheel serial number and date code are located on a label above the drive pulley on the energy wheel cassette.

Wheel Nameplate Information

Model: ______________________________ Volts: ___________ Hertz: _______ Phase: ___ Wheel Serial Number: ____________________ Manufacture Date Code: __________________

Field Start-Up Documentation

Energy Wheel Rotates freely o Yes

Unit Documentation Record

Job Name:________________________________________

Address: _________________________________________

City: ________________ State: ________ Zip: __________

Phone: __________________ Fax: ____________________

Contact Person: ___________________________________

Service Organization: ______________________________

Address: _________________________________________

City: ________________ State: ________ Zip: __________

Phone: __________________ Fax: ____________________

Work Done By: ____________________________________

Field Start-Up Documentation

Actual Voltage: _______ Hertz: _______ Phase: _____

Actual Amperage: _________________________________

Supply Blower

Rotation o Correct

Air Volume Design __________ cfm Actual __________ cfm

Exhaust Blower

Rotation o Correct

Air Volume Design __________ cfm Actual __________ cfm

Supply Motor Voltage: _____________________________

Supply Motor Amperage: __________________________

Supply Fan rpm: __________________________________

Exhaust Motor Voltage: ____________________________

Exhaust Motor Amperage: _________________________

Exhaust Fan rpm: _________________________________

o No, check items below.

Air seal tightness o Acceptable o Adjusted as on page 8

Belt runs smoothly o Yes o Adjusted

Energy Recovery Ventilators • MiniVent

Nameplate Information

Model: ___________________________________________

Volts: ___________ Hertz: __________ Phase: _________

Min. Circuit Amps: _____________ Mark: _____________

Supply Hp: _____________ Exhaust Hp: ______________

Unit Serial Number: ________________________________

Page 11

Troubleshooting

Symptom Possible Cause Corrective Action

Check fuses/circuit breakers, replace if needed.

Electrical Unit is NOT operating

Motor

Check for On/Off switches. Check for correct supply voltage.

Check motor horsepower is correct and not tripping overloads.

Excessive noise

Low airﬂow (cfm)

High airﬂow (cfm)

Fan wheel rubbing on inlet

Bearings

Adjust wheel and/or inlet cone. Tighten wheel hub or bearing collars on shaft.

Replace defective bearing(s). Lubricate bearings. Tighten collars and fasteners.

Wheel out of balance Clean, replace or rebalance.

Fan speed too low Check for correct rpms with catalog data.

Fan wheels are operating

backwards

Dirty ﬁlters or energy wheel

High static pressure

Refer to Fan Wheel Rotation on page 8.

Replace ﬁlters and/or follow the cleaning procedure on pages 9 and 10.

Incorrect fan-to-duct connections. Make sure dampers open appropriately. Increase fan speed

Fan speed too high Check for correct fan rpm.

Low static pressure

Make sure grilles, ﬁlters and access doors are installed. Decrease fan speed.

Air seals too tight Refer to Energy Recovery Wheel, Air Seals on page 8.

Energy wheel does NOT turn

Energy wheel runs intermittently

No power to wheel motor

Wheel drive belt

Wheel motor overloads are

tripping due to rubbing between

wheel and air seals.

Make sure wheel drive is plugged in/connected. Verify power is available.

Check for loose or broken belts. Replace belts; consult factory.

Recheck air seals, make sure they are not too tight. See Energy Recovery Wheel, Air Seals on page 8.

Always provide the unit model and serial number when requesting parts or service information. Always check motor amps and compare to nameplate rating.

Energy Recovery Ventilators • MiniVent

Page 12

Maintenance Log

Date __________________ Time _____________ AM/PM

Notes:___________________________________________

_________________________________________________

Date __________________ Time _____________ AM/PM

Notes:___________________________________________

_________________________________________________

Date __________________ Time _____________ AM/PM

Notes:___________________________________________

_________________________________________________

Date __________________ Time _____________ AM/PM

Notes:___________________________________________

_________________________________________________

Date __________________ Time _____________ AM/PM

Notes:___________________________________________

_________________________________________________

Date __________________ Time _____________ AM/PM

Notes:___________________________________________

_________________________________________________

Date __________________ Time _____________ AM/PM

Notes:___________________________________________

_________________________________________________

Date __________________ Time _____________ AM/PM

Notes:___________________________________________

_________________________________________________

Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the shipment date. The energy recovery wheel is warranted to be free from defects in material and workmanship for a period of ﬁve years from the shipment date. Any units or parts which prove to be defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the nearest authorized motor service station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change speciﬁcations without notice.

Greenheck catalog, Energy Recovery Ventilators, Model MiniVent, provides additional information describing the equipment, fan performance, available accessories, and speciﬁcation data.

AMCA Publication 410-96, Safety Practices for Users and Installers of Industrial and Commercial Fans, provides additional safety information. This publication can be obtained from AMCA International, Inc. at www.amca.org.

Phone:(715)359-6171•Fax:(715)355-2399•E-mail:gfcinfo@greenheck.com•Website: www.greenheck.com