Greenheck 479677 Installation Manual

Document 479677

Model MiniCore

Energy Core Ventilator

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 these instructions will result in voiding of the product warranty and may result in personal injury and/or property damage.

Energy Recovery Technical Support

Call 1-800-240-0870

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 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.

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 Core Ventilator

Table of Contents

Unit Overview

General Safety Information . . . . . . . . . . . . . . 1

Unit Overview . . . . . . . . . . . . . . . . . . . . . 2

Receiving, Handling, Storage . . . . . . . . . . . . . 3

Dimensional Data and Weights . . . . . . . . . . . . 4

Service Clearances and Access Panel Locations . . . 4

Intake and Discharge Locations . . . . . . . . . . . . 5

Installation . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical Connections . . . . . . . . . . . . . . . . .8

Wiring Schematics . . . . . . . . . . . . . . . . . . .9

System Start-Up . . . . . . . . . . . . . . . . . . . 10

Routine Maintenance . . . . . . . . . . . . . . . . 12

Standard Components. . . . . . . . . . . . . . . . 13

Troubleshooting . . . . . . . . . . . . . . . . . . . 14

Maintenance Log. . . . . . . . . . . . . . . . . . . 15

Our Commitment. . . . . . . . . . . . . . .Backcover

Summer Operation

Outdoor air is preconditioned (temperature and moisture levels are decreased) by the transfer of energy from the cooler, drier return air through the energy recovery core. The preconditioned air is typically mixed with return air going back to the air handler for final conditioning.

Outdoor Air

95°F

Exhaust Air

102 grains/lb.

Return Air

75°F

50% RH

Supply Air

82°F

87 grains/lb.

Winter Operation

Outdoor air is preconditioned (temperature and moisture levels are increased) by the transfer of energy from the warmer, more humid return air through the energy recovery core. The preconditioned air is typically mixed with return air going back to the air handler for finalconditioning.

Exhaust Air

Supply Air

40°F

20 grains/lb.

Outdoor Air

-13°F

1 grains/lb.

Return Air

72 °F

50% RH

Energy Core Ventilator

Receiving

This product may have been subject to road salt during transit. If so, immediately wash off all visible white reside from all exterior surfaces. Upon receiving the product, check to ensure all items are accounted for by referencing the delivery receipt or packing list. Inspect each crate or carton for shipping damage before accepting delivery. Alert the carrier if any damage is detected, do not refuse shipment. The customer shall make notation of damage (or shortage of items) on the delivery receipt and all copies of the bill of lading should be countersigned by the delivering carrier. If damaged, immediately contact your manufacturer’s representative. Any physical damage to the unit after acceptance is not the responsibility of the manufacturer.

Handling

Units are to be rigged and moved by the lifting brackets provided or by the skid when a forklift is used. Location of brackets varies by model and size. Handle in such a manner as to keep from scratching or chipping the coating. Damaged ﬁnish may reduce ability of unit to resist corrosion.

Unpacking

Verify that all required parts and the correct quantity of each item have been received. Inspect interior of unit cabinet for any shipped loose items. 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.

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.

The ideal environment for the storage of units and accessories is indoors, above grade, in a low humidity atmosphere which is sealed to prevent the entry of blowing dust, rain, or snow. Units designed for outdoor applications may be stored outdoors. All accessories must be stored indoors in a clean, dry atmosphere.

Indoor

Maintain temperatures evenly to prevent 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 to permit air circulation and to allow for periodic inspection.

The unit should be stored at least 3½ in. (89 mm) off the ﬂoor. Clearance should be provided to permit air circulation and space for inspection.

Outdoor

The unit should be placed on a level surface to prevent water from leaking into the unit. The unit should be elevated so that it is above water and snow levels. Ensure sufﬁcient support to prevent unit from settling into soft ground. Locate parts far enough apart to permit air circulation, sunlight, and space for periodic inspection. To minimize water accumulation, place all unit parts on blocking supports so that rain water will run off.

Do not cover parts with plastic ﬁlm or tarps as these cause condensation of moisture from the air passing through heating and cooling cycles.

Inspection and Maintenance

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 the fan wheel by hand ten to ﬁfteen revolutions to distribute lubricant on motor. 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 thoroughly clean with Tectyl® 506 (Ashland Inc.) or the equivalent. For hard to reach internal surfaces or for occasional use, consider using Tectyl® 511M Rust Preventive, WD-40® or the equivalent.

Removing from Storage

As units are removed from storage to be installed in their ﬁnal location, they should be protected and maintained in a similar fashion until the equipment goes into operation.

Prior to installing the unit and system components, inspect the unit assembly to make sure it is in workingorder.

1. Check all fasteners, set screws on the fan, wheel, bearings, drive, motor base, and accessories fortightness.

2. Rotate the fan wheel(s) by hand and assure no parts are rubbing.

Energy Core Ventilator

Energy Core and Filter

Dimensional Data and Weights

DISCHARGE

INLET

END

MiniCore A A1 B C

All dimensions are in inches.

39.4 34.4 16.3 47.3 215

39.4 34.4 21.5 47.3 245

CORE

Weight

(lbs.)

Service Clearances and Access Panel Locations

Recommended Service Clearances

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

When mounted on its side, the MiniCore only requires access on one side of the unit. It is recommended that access is kept on the electrical input side.

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

If the MiniCore unit is to be mounted on its side

(Reference the Mounting Options sections of this IOM), then service clearance should be on the electrical

input side.

Access Panel Locations

• Outdoor and exhaust fans, and motor

• Electrical connection

• Energy core and internal ﬁlters

MiniCore Inches

Discharge End

Intake End

Discharge A

Discharge B

Access Panel

Intake B

Intake A

Electrical Input

Service Clearance

Energy Core and Filter Access Panel

Electrical Access Panel

MiniCore D E F G H J K L M

All dimensions are in inches.

Energy Core Ventilator

9.7 9.7 3.7 19.8 3.3 5.3 22.1 12 2.2

9.7 9.7 3.7 19.4 5.9 5.3 22.1 12 4.8

Intake and Discharge Locations

The MiniCore comes standard with end connections. The option for conﬁgurable intake and discharge connections (shaded in below drawing) are available and can be interchanged based on application in theﬁeld.

Outdoor Air

Exhaust Air Discharge

Outdoor Air Discharge

Changing the Discharge Location

Step 1 - Disconnect and lockout all power switches.

Step 2 – Remove the sheet metal block off from the

desired discharge location.

Step 3 – Cut the insulation from the desired discharge location opening.

Step 4 – Remove the backdraft damper from its current position and reinstall in the desired discharge location. The hinged door should be on the discharge end of theunit.

Step 5 – Glue the cut out insulation to the sheet metal block off. Install where the damper had been located.

Step 6 – Using a 1/2-inch wrench, remove the four (4) bolts from the discharge end of the unit that holds theblowers.

Step 7 – Remove the four (4) plastic plugs from the desired discharge location and reinstall the plastic plugs in the holes where the bolts were removed from inStep6.

Step 8 – Position the blowers to line up with the desired discharge location. The motor needs to be on the discharge end of the blower and unit. If the motor is positioned on the return side of the blower/unit, the motor/blower will interfere with the energy recovery core. The blower adjacent to the control center needs to be rotated 90°. The blower not adjacent to the control center needs to be ﬂipped and rotated such that the motor is now opposite the control center side of the unit. It may be necessary to unwire the motors.

Step 9 – Bolt the blowers in their desired locations. Securely reconnect and fasten all wires.

Intake

Exhaust Air Intake

Changing the Inlet Location

Step 1 - Remove the metal cover for optional inlet

location by unfastening the four (4) sheet metal screws holding it in place.

Step 2 - Hand bend ﬂanges out to form a duct collar in the newly uncovered intake opening.

Step 3 - Cut insulation.

Step 4 - Hand bend ﬂanges in on original intake and

replace metal cover removed in Step 1.

Energy Core Ventilator

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