Greenheck Erm-36 User manual

#456785 IOM ERM 36/52

Rev 3 February 2007

Note: ERM mounting

bracket kit has a

separate parts list

and instruction sheet.

Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of five years from

the purchase date. This warranty limits our responsibility to repairing or replacing, to the original purchaser, any part or

parts of said equipment found to be defective upon examination by representatives of Greenheck. Additionally, said part

or parts will be returned to and received by the factory only after prior authorization, with transportation charges prepaid.

Greenheck shall not be obligated under this warranty, for payment of any delivery, removal or installation charges with

regard to repair or replacement of any defective part or parts.

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.

PARTS LIST

1. Cassette

2. Energy Wheel Segments

3. Energy Wheel Drive Belt and Pulley

4. Energy Wheel Motor

5. Cabinet

Troubleshooting

Symptom Possible Cause Corrective Action

Energy Wheel

does NOT turn

Air seals are too tight. See air seals under Start-Up section.

Broken belt. Replace.

No power to wheel motor. Make sure wheel drive is plugged in.

Verify power is available.

Energy Wheel

runs intermittently

Wheel motor overloads are tripping due

to rubbing between wheel and

air seals.

Recheck air seals, make sure they are

not too tight. See Air Seals under Start-

Up Section.

InstallatIon, operatIon and MaIntenance Manual

ENERGY RECOVERY MODULES

Models ERM-36 & 52

Part# 456785

READ AND SAVE THESE INSTRUCTIONS

February 2007

RECEIVING AND HANDLING

The ERM is thoroughly inspected and test run at the factory. However, damage may occur during shipping

and handling. Upon delivery, inspect the unit for both obvious and hidden damage. If damage is found, record

all necessary information on the bill of lading and file a claim with the final carrier. In addition, ensure all

accessory items are present. Some accessory items are stored inside the unit during shipping.

SAFETY WARNING

Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or

death. Read this installation, operation, and maintenance manual thoroughly before installing or servicing this

equipment. Installation and service must be performed by a qualified installer, service agency, or the gas supplier.

SAVE THIS MANUAL

This manual is the property of the owner, and is required for future maintenance.

This manual should remain with each ERM unit when the job is complete.

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 Fantastic™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.

** DO NOT CLEAN ENERGY RECOVERY WHEEL SEGMENTS WITH WATER IN EXCESS OF 140°F

** DO NOT DRY ENERGY RECOVERY WHEEL SEGMENTS IN AIR IN EXCESS OF 140°F.

** THE USE OF A PRESSURE WASHER TO CLEAN SEGMENTS IS NOT RECOMMENDED. DAMAGE

COULD RESULT.

Wheel Belt & Pulley

Wheel Bearing

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.

ACCESSING ENERGY RECOVERY WHEEL

Disconnect power to the ERM unit. Remove access panel and UNPLUG the wheel drive motor. Pull the

cassette halfway out.

REMOVING THE ENERGY RECOVERY WHEEL SEGMENTS

Rotate the wheel by hand clockwise (as viewed from the pulley side of cassette) to check each

segment. Steel retainers are located on the inside of the wheel rim (see

diagram). Push the retainer toward center of wheel, the lift up and

away to release segments.

IMPORTANT!

Place retainers back in the original position

before rotating the energy recovery wheel.

Otherwise damage to retainer will occur.

Bracket Segment Retainer

Lift Away

From Segment

Catch-

Segment Retainer

Push Toward Center

Center of Wheel

Spoke

Inside of Wheel Rim

ROUTINE MAINTENANCE

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 BEARINGS

In the unlikely event that a wheel bearing fails, the bearing is

behind a removable plate on the wheel support beam (slide

cassette halfway out of cabinet to access). Contact the local

Greenheck representative for detailed instructions on how to

replace the bearing.

The ERM models contain a total energy recovery wheel. The

wheels are inspected for proper mechanical operation at

the factory. However, during shipping and handling, shifting

can occur that may affect wheel operation. The wheel is

accessible through the cassette access panel.

Turn the energy recovery wheel by hand to verify

free operation. The wheel should rotate smoothly at

approximately 50-60 rpm and should not wobble. If the wheel

does not rotate when power is applied, it may be necessary

to adjust excessively tight diameter air seals.

DRIVE BELT

Inspect the drive belt. Make sure the belt rides smoothly through the pulley and over the rim.

AIR SEALS

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 seal

clearance is determined by placing a sheet of

paper, to act as a feeler gauge, against the wheel

face. To access seals, remove cassette access

panel. To adjust their 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.

Replace cassette into ERM cabinet, plug in wheel

drive, replace access door and apply power.

Confirm that the wheel rotates freely at about

50-60 rpm.

ELECTRICAL CONNECTIONS

The electrical supply must be compatible with that shown on the wheel drive motor nameplate: voltage,

phase, and amperage capacity (see page 3 for specific requirements). Units are supplied with a receptacle

for the cassette plug and service box for wiring. Connect the ERM wiring directly to blower wiring or to

blower fan relay to power the ERM whenever the fan is in operation. All wiring must be properly fused and

conform to local and national electrical codes.

Do not operate the ERM for any extended period without airflow across the energy wheel as the drive motor

is cooled by the airflow.

MOUNTING

The ERM is shipped with a mounting kit, which contains four hanging brackets, fasteners and a separate

instruction sheet with parts list. These brackets will support the ERM in either the vertical or horizontal

position for design flexibility. A 3/8 in. x 3/4 in. hex head bolt is located at each corner of the ERM for

attaching these brackets. To hang the ERM:

Note: To reduce unit weight for handling purposes, the cassette may be removed from the cabinet (reduces

ERM-36 from 193 lbs. to 75 lbs., reduces ERM-52 from 330 lbs. to 110 lbs.).

1. To remove the cassette from the cabinet, remove the access panel and unplug the

wheel drive motor at the electrical receptacle in the cabinet.

2. Replace the access panel before mounting to insure squareness.

3. Remove the appropriate four bolts from the ERM and use to secure the brackets as

shown in Figure 1. These brackets are designed for 3/8 in. threaded hanging rods.

4. To reinstall the cassette in the mounted ERM cabinet, align

the cassette sliders with the channels in the cabinet and

slide the cassette in place. Replace access panel when

finished.

STORAGE

When a unit is not going to be in service for an extended amount of time, certain procedures should be

followed:

• Cover unit with tarp to protect from dirt and moisture (Note: do not use a black tarp as this will

promote condensation)

• Store unit in location which does not have vibration

If storage of unit is in a humid, dusty or corrosive atmosphere, rotate the fan and purge the bearings once a

month. Improper storage which results in damage to the unit or components will void the warranty.

IMPORTANT

ERM must be installed such that the energy

wheel cassette slides in and out of the cabinet

parallel to the floor.

START-UP

SAFETY 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.

SAFETY 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.

Every installation requires a comprehensive start-up to ensure proper operation of the unit. As part of that

process, the following information must be recorded. Should an issue arise which requires factory assistance,

this important information will allow unit experts to provide quicker resolve. Qualified personnel should perform

start-up to ensure safe and proper practices are followed.

Unit Model Number ____________________________ (e.g. ERM-36H-15)

Unit Serial Number ____________________________ (e.g. 04C99999 or 10111000)

Energy Wheel Date Code ____________________________ (e.g. 0450)

Start-up date ____________________________ (MM/DD/YYYY)

Start-up Personnel Name ____________________________

Start-up Company ____________________________

Phone Number ____________________________

**WARNING**

Do not operate Energy Recovery Module

without duct filters or screens installed.

The filters and screens prevent the entry of

foreign objects such as leaves, birds, etc.

DIMENSIONAL DATA & SPECIFICATIONS

Model A B C D E F G H Voltage Hertz Phase Amps Motor

Weight

Cabinet Cassette

ERM-36S-15 341/442 441/25 143/4177/8143/4121/2200-230/460 50/60 1 0.6 1/20 75 80

ERM-36H-15 341/442 441/25 143/4177/8143/4121/2200-230/460 50/60 1 0.6 1/20 75 80

ERM-36H-30 341/442 441/25 143/4177/8143/4121/2200-230/460 50/60 1 0.6 1/20 75 118

ERM-52S-15 501/2581/4603/461/2173/4177/8143/4121/2200-230/460 50/60 1 1.2 1/6 110 188

ERM-52H-15 501/2581/4603/461/2173/4177/8143/4121/2200-230/460 50/60 1 1.2 1/6 110 188

ERM-52H-30 501/2581/4603/461/2173/4177/8143/4121/2200-230/460 50/60 1 1.2 1/6 110 220

All dimensions shown are in inches.

ROUTINE MAINTENANCE

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:

DATE DATE DATE DATE

______ ______ ______ ______

Energy Recovery Wheel

Check for cleanliness - clean if required oooo

Check belt for wear oooo

Check pulley, bearings, and motor oooo

INSTALLATION CLEARANCES

Provide proper clearance for cassette inspection, service or removal. Do not install ducting, piping or

wiring where it will interfere with cassette removal.

Model Inspection

or Service Removal

ERM-36 22 inches 42 inches

ERM-52 30 inches 58 inches

Storage .................................2

Electrical Connection .....................2

Mounting.................................2

Start-Up

Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

AirSeals................................3

Dimensional Data & Specifications . . . . . . . . 4

Installation Clearances . . . . . . . . . . . . . . . . . . . . 4

Rountine Maintenance

Energy Recovery Wheel . . . . . . . . . . . . . . . . . . . 5

Routine Maintenance - continued

Energy Recovery Wheel Maintenance . . . . . . . . 5

Energy Recovery Wheel Access. . . . . . . . . . . . . 5

Removal of Segments . . . . . . . . . . . . . . . . . . . . . 5

Cleaning the Energy Recovery Wheel ........5

Energy Recovery Wheel Belt . . . . . . . . . . . . . . . 5

Energy Recovery Wheel Bearings ...........5

Parts List . . . . . . . . . . . . . . . . . . . . Backcover

Troubleshooting . . . . . . . . . . . . . . . Backcover

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

TABLE OF CONTENTS

Drive

Belt

Drive

Pulley

Label

showing

cassette

serial #

and

date code

Adjustable

Air Seals

Bearing

Support

23 4

FIGURE 1