Greenheck MiniCore User Manual

Document 479677

Energy Recovery Ventilator

Model MiniCore

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!

Energy recovery cores 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 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.

MiniCore

Receiving

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 of any damage detected. The customer will make a notation of damage (or shortage of items) on the delivery receipt and all copies of the bill of lading which is countersigned by the delivering carrier. If damaged, immediately contact your Sales Representative. Any physical damage to the unit after acceptance is not the responsibility of manufacturer.

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 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.

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.

INDOOR — 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. Temperatures should be evenly maintained between 30°F (-1°C) and 110°F (43°C) (wide temperature swings may cause condensation and “sweating” of metal parts). All accessories must be stored indoors in a clean, dry atmosphere.

Remove any accumulations of dirt, water, ice, or snow and wipe dry before moving to indoor storage. To avoid “sweating” of metal parts allow cold parts to reach room temperature. To dry parts and packages use a portable electric heater to get rid of any moisture build up. 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 on wooden blocks covered with moisture proof paper or polyethylene sheathing. Aisles between parts and along all walls should be provided to permit air circulation and space for inspection.

Inspection and Maintenance during Storage

While in storage, inspect fans 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. Every three months, the fan motor should be energized. If paint deterioration begins, consideration should be given to touch-up or repainting. Fans 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 hard to reach internal surfaces or for occasional use, consider using Tectyl 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.

506 (Ashland Inc.) or the equivalent. For

511M Rust Preventive or WD-40®

MiniCore

Table of Contents

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

Changing the Inlet Location . . . . . . . . . . . . . . 4

Changing the Discharge Location . . . . . . . . . . . 4

Service Clearances and Access Panel Locations . . . 4 Installation Hang Mounting with Hanging Vibration Isolators. . 4

Base Mounting with Base Vibration Isolators. . . . 5

Duct Connections . . . . . . . . . . . . . . . . . . 6

Electrical Connections

Unit Wiring Sequence . . . . . . . . . . . . . . . . 6

Frost Control . . . . . . . . . . . . . . . . . . . . 6

Wiring Schematics . . . . . . . . . . . . . . . . . . . 7

System Start-Up

Unit Documentation Record . . . . . . . . . . . . 8

Pre-Start-Up Checklist . . . . . . . . . . . . . . . 8

Start-Up Checklist . . . . . . . . . . . . . . . . . 8

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

Check Voltage. . . . . . . . . . . . . . . . . . . . 9

Blower Wheel Rotation . . . . . . . . . . . . . . . 9

Air Volume Check & Measurement . . . . . . . . . 9

Voltage, Amperage and Fan RPM . . . . . . . . . 9

Routine Maintenance

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

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

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

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

Energy Core . . . . . . . . . . . . . . . . . . . . 10

Optional EC Motors . . . . . . . . . . . . . . . . . 10

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

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

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

Dimensional Data and Weights

Discharge End

MiniCore A A1 B C

All dimensions are in inches.

39.4 34.4 16.2 47.3 230

39.4 34.4 21.4 47.3 245

Filters

CoreCore

Discharge A

Intake End

Weight

(lbs.)

Discharge B

Discharge End

Intake End

Intake B

Intake A

MiniCore D E F G H J K L M

9.75 9.75 3.7 19.8 3.2 5.3 22.1 12 2.1

All dimensions are in inches.

9.75 9.75 3.7 19.8 5.8 5.3 22.1 12 4.7

MiniCore

Conﬁgurable Discharge & Intake 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.

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.

Access Panel Locations

• Outdoor and exhaust fans and motor

• Electrical connection

• Energy core and internal ﬁlters

Energy Core and Filter Access Panel

Electrical Input

MiniCore Inches

Energy Core and Filter Access Panel

MiniCore

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