Carrier 62MD User manual

62MB,MC,MD,ME040-950

Energy Recovery

Ventilators

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-58

Step 1 — Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Step 2 — Install Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . 1

• STAND-ALONE APPLICATIONS

• COUPLED APPLICATIONS

Step 3 — Rigging and Handling . . . . . . . . . . . . . . . . . 45

• MOUNTING THE UNIT INDOORS

Step 4 — Installing ERV Transitions . . . . . . . . . . . . . . . 47

• ERV UNIT COUPLED WITH A 3 TO 12 1 /

2

TON

HVAC UNIT

Step 5 — Make Electrical Connections . . . . . . . . . . . . 47

• POWER SUPPLY

• ELECTRICAL CONNECTIONS

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59-75

Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Rain Hoods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Energy Recovery Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 59

• DRIVE BELT

• AIR SEALS

Blower Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Airflow Settings and Adjustments . . . . . . . . . . . . . . . 59

• FACTORY SETTING

• CURVE SELECTION

• ADJUST THE ERV BLOWER SPEED

• MEASURE MOTOR VOLTAGE, AMPERAGE

AND FAN RPM

• BELT MAINTENANCE

Variable Air Volume Option. . . . . . . . . . . . . . . . . . . . . . 74

Operating Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

• OCCUPIED MODE

• UNOCCUPIED MODE

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75-78

Removing Wheel Segments for Cleaning

(62M170-950 Units). . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Removing and Installing Non-Segmented

Wheel for Cleaning (62M040 Units). . . . . . . . . . . . 75


Wheel for Cleaning (62M075,120 Units) . . . . . . . 76

Installing Wheel Segments (62M170-950 Units). . . 76

Wheel Drive Motor and Pulley Replacement . . . . . 77

Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78,79

START UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform the basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. These instructions describe how to install, start up, and service 62M energy recovery ventilator units.

Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed.

INTRODUCTION

The 62M energy recovery ventilator (ERV) units recover energy from building exhaust air and pre-condition ventilation air. All ERV units are available in either vertical discharge

(through the bottom) or horizontal discharge configuration.

The 62MB and MC vertical discharge units are used when a stand-alone ERV unit is required.

The 62MD and ME horizontal discharge unit can be used as a stand-alone unit, or can also be coupled with a Carrier rooftop unit.

INSTALLATION

Step 1 — Inspection —

Inspect the unit; file a claim with the shipping company if the unit is damaged. Check the packing list to ensure that the correct items have been received and notify your Carrier representative of any discrepancy.

Step 2 — Install Roof Curb

STAND-ALONE APPLICATIONS — The ERV unit can be installed without being coupled with a Carrier rooftop unit. The

ERV units can be installed in one of three stand-alone applications: down discharge, horizontal discharge, or a combination of both down discharge and horizontal discharge.

When installing a stand-alone ERV unit refer to Fig. 1-45 and, complete the following:

Locate the Roof Curb — Prior to locating the roof curb consider the structural support required for the rooftop system and, the duct drop location in relation to the joists. Allow sufficient space for service, clearance, and locations of vents or other sources of air.

Book 1

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

4 Catalog No. 536-220 Printed in U.S.A.

Form 62M-1SI Pg 1 1-06 Replaces: New

Tab 10a 12a

Cover roof opening if installation of the ERV unit will not be immediate. Failure to cover roof opening could result in water damage and/or serious personal injury.

Assemble the Roof Curb — Connect the curb side and the curb end. See Fig. 1. Insert the tabs on the curb end into the slots on the curb sides. Press firmly until the pieces lock into place. It may be necessary to exert additional force to the top of the curb to lock the pieces in place. Ensure the curb pieces are locked together prior to proceeding.

Repeat for all corners of the roof curb.

Prepare Roof Curb Location — Cut a hole in the roof for duct openings. See Fig. 2-5 for duct opening dimensions. Frame the opening to provide adequate structural support.

Install Deck Pans and Duct Supports — The roof curb may have a duct support and deck pans, depending on the model and application. Determine which end of the roof curb will be the duct end.

Install the deck pans on the roof curb with the insulation side facing up toward the ERV base. Install the duct support between the supply and return openings.

Set the Roof Curb — Fit the roof curb assembly by measuring across the corners of the curb to ensure a square fit. Set the roof curb over the roof opening. Level the curb by placing shims under the bottom flange of the curb. Secure the curb in place by welding or fastening the curb to the roof.

Cover the roof curb if installation of the ERV unit will not be immediate. Failure to cover the roof curb could result in water damage and/or serious personal injury.

Install Ductwork — Ductwork will be installed in the roof curb for vertical discharge and stand-alone applications. The duct will hang from the top of the curb. See Fig. 45 for standalone application airflow.

NOTE: Ductwork must be installed before the ERV unit is set in place.

Refer to Fig. 2-5 to determine the duct size required.

Provide field manufactured duct and place into the supply and return openings in the curb.

Install Gaskets — The ERV roof curbs come with a gasketing package to provide a seal between the ERV unit and the top perimeter of the roof curb. Install the gasket around the top perimeter of the curb and around the supply and return opening.

NOTE: Some stand-alone curbs will not have duct openings).

Gasket strips must fit tightly together, leaving no gaps for leakage.

IMPORTANT: Gasket installation is critical for water integrity. Improperly installed gaskets can result in air or water leaks, leading to poor unit performance.

Install Roofing Materials — Insulate and add a cant strip to the roof curb. Follow suggested and acceptable roofing practices

END

Fig. 1 — Assembling the Roof Curb

SIDE for applying roofing materials. The roofing material should extend up to the wood nailer and be secured under the counterflashing. Follow all local, national, and industry roofing standards. Refer to Fig. 6 for roofing recommendations.

COUPLED APPLICATIONS — The ERV unit can be installed directly coupled to a Carrier rooftop unit. The connection between the ERV and HVAC (Heating, Ventilation, and

Air Conditioning) unit is made with the use of a transition. In a coupled rooftop application there is a separate roof curb for the

HVAC curb and a separate roof curb for the ERV unit. See

Fig. 4 and 5 for roof curb dimensions.

Locate the Roof Curb — Prior to locating the roof curb consider the structural support required for the rooftop system and, the duct drop location in relation to the joists. Allow sufficient space for service, clearance, and locations of vents or other sources of air. Refer to the rooftop installation instructions for more information regarding location considerations.

Assemble the Roof Curb — Connect the curb side and the curb end. Insert the tabs on the curb end into the slots on the curb sides. Press firmly until the pieces lock in to place. It may be necessary to exert additional force to the top of the curb to lock the pieces in place. Ensure the curb pieces are locked together prior to proceeding.

Repeat for other corners of the roof curb.

NOTE: If lifting or moving the roof curb assembly hammer the tabs over 90 degrees.

Install Deck Pans and Duct Supports — The roof curb may have a duct support and deck pans, depending on the model and application. Refer to Fig. 2-5. Determine which end of the roof curb will be the duct end.

Install the deck pans on the roof curb with the insulation side facing up toward the ERV base. Install the duct support between the supply and return openings.

Install Locator Pieces — Some ERV roof curbs (62MA-CRB-

14MC and 62MB-CRB-14MC) will include locator pieces, which are to be attached to the ERV roof curb section. The locator pieces will help the installer ensure that the ERV and

HVAC unit roof curbs are positioned properly. Attach the

2 side locator pieces to the ERV roof curb. Install the cover panel over the 2 sides and fasten in place.

2

Set the Roof Curb — Fit the roof curb assembly by measuring across the corners of the curb to ensure a square fit. Set the roof curb over the roof opening. Level the curb by placing shims under the bottom flange of the curb. Secure the curb in place by welding or fastening the curb to the roof.

IMPORTANT: The ERV roof curb must be set in precisely the correct location relative to the rooftop roof curb for the transitions to connect properly. See

Fig. 7-44 for location dimensions.

Install Ductwork — Ductwork will be installed in the roof curb for vertical, coupled applications. The duct will hang from the top of the curb.

NOTE: Ductwork must be installed before the rooftop unit is set in place.

NOTE: Ductwork must be installed before the ERV unit is set in place.

Refer to Fig. 2 and 3 to determine the duct size required.

Provide field manufactured duct and place into the supply and return openings in the curb.

Install Gaskets — The ERV roof curbs come with a gasketing package to provide a seal between the ERV unit and the top perimeter of the roof curb. Install the gasket around the top perimeter of the curb and around the supply and return opening. (Some stand-alone curbs will not have duct openings.) Gasket strips must fit tightly together, leaving no gaps for leakage.

IMPORTANT: Gasket installation is critical for water integrity. Improperly installed gaskets can result in air or water leaks, leading to poor unit performance.

Install Roofing Materials — Insulate and add a cant strip to the roof curb. Follow suggested and acceptable roofing procedures for applying roofing materials. The roofing material should extend up to the wood nailer and be secured under the counter flashing. Follow all local, national, and industry roofing standards. Refer to Fig. 5 for roofing recommendations.

24.09

SUPPLY

10.81

1.00

TYP. 4X

22.94

RETURN

11.50

11.00

NOTES:

1. All dimensions are in inches.

2. Roof curb shipped unassembled.

Fig. 2 — Roof Curb — 62M040 for Stand-Alone Applications

14.00

3.00

TYP. 4X

3

Typical Insulated deck pans.

(Insulation face up) *

D

E

S/A

F C

G

R/A

H

B

LEGEND

R/A — Return Air

S/A — Supply Air

A

*IMPORTANT: Insulation on deck pans must face up.

NOTE: Roof curb shipped unassembled.

62M UNIT SIZE

075,120

170-285

330-640

750,950

CURB

PART NO.

62M-A-CRB-14S

62M-B-CRB-14S

62M-C-CRB-14S

62M-D-CRB-14S

A

27

45.5

55.41

86.25

B C

30.5

14

49.63

14

60.34

14

95.7

14

D

14

17.5

24.84

32.5

E

DIMENSIONS (in.)

F G

11.3

19.5

23.41

2

42.13

2

1

2

14.7

24

30

42.13

H

1.5

1.75

—

—

Duct Sizes

Return Supply

13.75 x 14.38

13.75 x 11

17 x 23.5

17 x 19

24.5 x 29.5

32 x 41.75

24.5 x 23

32 x 41.75

Fig. 3 — Roof Curb — 62M075-950 for Vertical Stand-Alone Applications

C

ERV Curb

B

D

A

LEGEND

ERV — Energy Recovery Ventilator


62M UNIT SIZE

075,120*

170-285†

330-640

750,950

CURB

PART NO.

62M-A-CRB-14S

62M-B-CRB-14S

62M-C-CRB-14M

62M-D-CRB-14M

A

27

49.63

60.34

95.7


B C

30.5

14

14

14

14

45.5

55.41

86.25

D

1.5

1.75

1.75

1.75

*62M075,120 curb is shipped with deckpans insulation and duct supports which may be discarded.

†62M170-285 curb is shipped with deck pans and insulation.

Fig. 4 — Roof Curb — 62M075-950 for Horizontal Stand-Alone Applications or Units Coupled with Rooftop Units 15 Tons and Above

4

Must be Watertight

ERV Curb

Locator pieces to connect

ERV curb to rooftop unit curb

C

B

D

A

E

LEGEND



62M UNIT SIZE

075,120

170-285

CURB

PART NO.

62M-A-CRB-14MC

62M-B-CRB-14MC

A

30.5

49.63


B

14

14

C

27

45.5

D

1.5

1.75

E

19.81

37.81

Fig. 5 — Roof Curb — 62M075-285 Units 3 to 12 1 /

2

Ton Rooftop Units

GASKETING

ROOF CURB

NAIL*

RIGID

INSULATION*

CANT STRIP*

FLASHING*

ROOF FELT*

ROOF DECK*

ROOF*

*Field provided.

Fig. 6 — Roofing Materials — Recommendation

5

6

7

POWER ENTR

8

9

10

11

12

ACCESS DOOR

13

14

15

Exhaust hood

EXH

Filter

Outside air hood

Filter

ERV wheel

Supply

Blower

Rooftop Unit

62M040 Unit

Filter access door shipped with Rooftop

Unit

Outside air hood with aluminum water entrainment filter.

Includes barometric intake damper.

Filters

Evaporation

Coil

3 to 6 Ton Rooftop Unit

Accessory ERV

Equipment support

Standard Rooftop

Unit roof curb

TRANSITION DETAIL

Panel covering return chamber

Accessory Transition

3”

ROOF CURB LOCATION DETAIL

Access door to adjust balancing damper

To 62M040 Unit

Balancing damper

A A

Return

Supply

35”

Accessory ERV

Equipment support

67 3/8”

Rooftop

Unit

Curb

35"

ERV

Unit

Support

Side View A-A

Rooftop Curb

37”

LEGEND


Top View

ROOFTOP UNIT MODEL

48/50HJ,TJ,TM

ROOFTOP SIZE

004-007

TRANSITION P/N

62M-AATR-HJ36-D

ROOFTOP ECONOMIZER

62MA-900---004

ERV EQUIPMENT SUPPORT P/N

62MA-900---001

Fig. 17 — 62MD,ME040 Coupled with Carrier 48/50HJ,TJ,TM004-007 Vertical Discharge Rooftop Unit

16

Exhaust hood

EXH

Filter

Outside air hood

Filter

ERV wheel

Supply

Blower

Rooftop Unit

Field-Supplied

Duct

Outside air hood with aluminum water entrainment filter.

Includes barometric intake damper.

62M040 Unit

Filter access door shipped with Rooftop

Unit


Accessory ERV

Equipment support

Standard Rooftop

Unit roof curb

TRANSITION DETAIL

Panel covering return chamber



3”

Supply

A

35”

Accessory ERV

Equipment support

Return

A

67 3/8”


To 62M040 Unit

Balancing damper

Rooftop Curb

37”

Rooftop

Unit

Curb

35"

ERV

Unit

Support

Side View A-A

LEGEND



48/50HJ,TJ,TM

ROOFTOP SIZE

004-007

TRANSITION P/N

62M-AATR-HJ36-D


62MA-900---008


62MA-900---001

Fig. 18 — 62MD,ME040 Coupled with Carrier 48/50HJ,TJ,TM004-007 Horizontal Discharge Rooftop Unit

17

Rooftop Unit


(Includes front panel)

Rooftop Unit

Supply

TRANSITION DETAIL

Filter

Return


ERV wheel

Filter

62M040 Unit

Accessory ERV

Equipment support

2 Piece front panel covers return chamber

Exhaust hood

Outside air hood

Top View


80 5/16”

35”

To 62M040 Unit


44 11/16”

A

Return

A

Supply

Rooftop

Unit

Curb

35"

ERV

Unit

Support

4 3/8”

Rooftop Curb

LEGEND


Accessory ERV

Equipment support

Side View A-A


48/50PG

ROOFTOP SIZE

03-07

TRANSITION P/N

62M-AATR-HJ36-D


62MA-900---001

Fig. 19 — 62MD,ME040 Coupled with Carrier 48/50PG03-07 Vertical Discharge Rooftop Unit

18

Rooftop Unit



Rooftop Unit

TRANSITION DETAIL

Filter


ERV wheel

Filter

62M040 Unit

Exhaust hood

Outside air hood

Top View


80 5/16” 35”

Accessory ERV

Equipment support

2 Piece front panel covers return chamber

To 62M040 Unit


44 11/16” A A

Rooftop

Unit

Curb

35"

ERV

Unit

Support

4 3/8”

Rooftop Curb

LEGEND


Side View A-A

Accessory ERV

Equipment support


48/50PG

ROOFTOP SIZE

03-07

TRANSITION P/N

62M-AATR-HJ36-D


62MA-900---001

Fig. 20 — 62MD,ME040 Coupled with Carrier 48/50PG03-07 Horizontal Discharge Rooftop Unit

19

A

37 3/16"

Supply

Air

ROOF CURB LAYOUT

TOP VIEW

67 3/8"

35 "

3"

36"

Return

Air

A

34 3/8"

62MA-900---001

Equipment Support

Standard roof curb for

3 to 6 ton rooftop unit

"A-A" SIDE VIEW

Standard Roof curb for 3 to 6 ton roof top unit

35 "

14"

62MA-900---001

Equipment Support

10.4" Roof

Fig. 21 — 62MD,ME040 Coupled with Carrier 48/50HJ,TJ,TM004-007 Rooftop Unit

20

SUPPLY

Rainhoods for optional economizer

Rooftop unit

Rooftop unit

Unit curb


62M075,120 ERV Unit

Locator pieces

(included with

ERV curb,

ERV curb must be watertight)

Filter door shipped with Rooftop unit.

62M ERV Unit


A

B

Rooftop

Unit curb

Locator Pieces ( included with ERV Curb)

Cover panel provided

30.5”

27”

LEGEND

ERV — Energy Recovery Ventilator

NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used. Use the 62M economizer instead.

2 3/4"

20"

ERV curb

ROOFTOP UNIT

MODEL

48/50HJ,TF,TJ,TM

ROOFTOP SIZE TRANSITION P/N

004-007

008,009

012,014

62M-ATR-HJ36-D

62M-ATR-HJ78-D

ERV CURB P/N

62M-A-CRB-14MC

62M-A-CRB-14MC

62M-ATR-HJ1012-D 62M-A-CRB-14MC

ROOFTOP

ECONOMIZER

62MA-900---004

62MA-900---005

62MA-900---006


A B

67 3 /

8

78 1 /

4

78 1 /

4

37 3 /

50

50

16

Fig. 22 — 62MD,ME075,120 Coupled with Carrier 48/50HJ,TF,TJ,TM004-014 Vertical Discharge Rooftop Unit

21

Horizontal supply and return duct (field supplied)

Rooftop unit

Rooftop Unit


62M075,120

ERV Unit Locator pieces

(included with

ERV curb,

ERV curb must be watertight)


62M ERV Unit

Optional Horizontal

Economizer


A

B

Rooftop

Unit curb

Locator Pieces ( included with ERV curb)


30.5"

27"

LEGEND



2 3/4"

20"

ERV curb

ROOFTOP UNIT

MODEL



004-007

008,009

012,014

62M-ATR-HJ36-H

62M-ATR-HJ78-H

ERV CURB P/N

62M-A-CRB-14MC

62M-A-CRB-14MC

62M-ATR-HJ1012-H 62M-A-CRB-14MC

ROOFTOP

ECONOMIZER

62MA-900---008

62MA-900---009

62MA-900---010


A

67 3 /

78 1 /

8

4

78 1 /

4

B

37 3 /

16

50

50

Fig. 23 — 62MD,ME075,120 Coupled with Carrier 48/50HJ,TF,TJ,TM004-014 Horizontal Discharge Rooftop Unit

22

Rooftop Unit

Rooftop Unit



62M ERV Unit

Supply

B

Return

ERV Wheel

TOP VIEW

A

Supply

Accessory

Transition

62M075,120 ERV Unit

Locator pieces

(included with

ERV Curb

ERV curb, must be watertight)

LEGEND


NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or field-installed economizer cannot be used.

A

Return


20"

ERV Curb

30 1/12"

A

2 3/4"

27"

Rooftop

Unit

Curb

Curb Detail

20"

ERV

Unit

Curb

Rooftop Unit Curb

Side View A-A

Locator pieces

(included with

ERV Curb)

ROOFTOP MODEL

48/50PG

ROOFTOP SIZE

03-07

08-14

62M TRANSITION

62M-ATR-PG26-D

62M-ATR-PG712-D

ERV CURB

62M-A-CRB-14MC

62M-A-CRB-14MC


A

80 5 /

16

92 3 /

4

B

44 11 /

16

53 15 /

16

Fig. 24 — 62MD,ME075,120 Coupled with Carrier 48/50PG03-14 Vertical Discharge Rooftop Unit

23

Rooftop Unit

Rooftop Unit



62M Unit

Accessory

Transition

ERV Wheel

62M075-120 ERV Unit

Locator pieces

(included with


ERV Curb

LEGEND


NOTE: When using a 62M ERV unit coupled with a Carrier rooftop unit, the rooftop factory or fieldinstalled economizer cannot be used.

TOP VIEW

B

A

A


20"

ERV Curb

30 1/12"

A

2 3/4"

27"

Rooftop

Unit

Curb

Curb Detail

20"

ERV

Unit

Curb

Side View A-A

Rooftop Unit Curb

Locator pieces

(included with

ERV Curb)

ROOFTOP MODEL

48/50PG

ROOFTOP SIZE

03-07

08-14

62M TRANSITION

62M-ATR-PG26-H

62M-ATR-PG712-H

ERV CURB

62M-A-CRB-14MC

62M-A-CRB-14MC


A B

80 5 /

16

92 3 /

4

44 11 /

16

53 15 /

16

Fig. 25 — 62MD,ME075,120 Coupled with Carrier 48/50PG03-14 Horizontal Discharge Rooftop Unit

24

Rooftop

Unit

Filter door shipped with

Rooftop unit

62M ERV Unit

Rainhoods for optional economizer

Rooftop unit

30”

Top View

Rooftop curb


Locator Pieces

(included with ERV curb, must be watertight)

62M170-285 ERV Unit

ERV Curb

SUPPLY

A

B

Rooftop

Unit curb


Locator Pieces ( included with ERV curb)


49 5/8"

ERV curb

45 1/2"

2 3/4"

38"

LEGEND



Top View

ROOFTOP UNIT

MODEL



004-007

008,009

012,014

62M-BTR-HJ36-D

62M-BTR-HJ78-D

ERV CURB P/N

62M-B-CRB-14MC

62M-B-CRB-14MC

62M-BTR-HJ1012-D 62M-B-CRB-14MC

ROOFTOP

ECONOMIZER

62MA-900---004

62MA-900---005

62MA-900---006


A B

67 3 /

8

78 1 /

4

78 1 /

4

37 3 /

50

50

16

Fig. 26 — 62MD,ME170-285 Coupled with Carrier 48/50HJ,TF,TJ,TM004-014 Vertical Discharge Rooftop Unit

25

Optional

Horizontal

Economizer

Rooftop Unit


62M ERV Unit

Rooftop

Unit

30"

Top View


Horizontal

Return duct

(field supplied)

Locator pieces

(included with


62M170-285 ERV Unit

ERV Curb

B

Rooftop

Unit curb


Locator Pieces ( included with ERV Curb)

Cover Panel provided

49 5/8"

ERV curb

A

45 1/2"

2 3/4"

38"

LEGEND



Top View

ROOFTOP UNIT

MODEL



004-007

008,009

012,014

62M-BTR-HJ36-H

62M-BTR-HJ78-H

ERV CURB P/N

62M-B-CRB-14MC

62M-B-CRB-14MC

62M-BTR-HJ1012-H 62M-B-CRB-14MC

ROOFTOP

ECONOMIZER

62MA-900---008

62MA-900---009

62MA-900---010


A

67 3 /

78 1 /

8

4

78 1 /

4

B

37 3 /

16

50

50

Fig. 27 — 62MD,ME170-285 Coupled with Carrier 48/50HJ,TF,TJ,TM004-014 Horizontal Discharge Rooftop Unit

26

Rooftop Unit


62M ERV unit

LEGEND


NOTES:

1. The 62M ERV unit cannot be coupled with horizontal return 48/50TJ,TM016-028 and

48/50HJ015,017 units.

2. The ERV unit can be used with a factoryinstalled economizer, if desired.

TOP VIEW

Rooftop Unit

Accessory

Transition

Unit curb

62M170-285

ERV Unit

ERV curb

*Optional

Economizer

SIDE VIEW


62M170-285

ERV Unit

Transition

Rooftop Unit Curb


ERV Curb

74 1/4"

A A

45 1/2"

Rooftop

Unit

Curb

44 3/4"

18 11/16"

44 3/4"

67 1/16"*

TOP VIEW

*Length is 89 1 /

16

″ for 48/50TM028 units.

49 5/8"

SIDE VIEW A-A

ROOFTOP UNIT

MODEL

48/50TJ,TM

48/50HJ


016-028

015,017

62M-BTR-HJ1525-D

62M-BTR-HJ1525-D

ERV CURB P/N

62M-B-CRB-14S

62M-B-CRB-14S

Fig. 28 — 62MD,ME170-285 Coupled with Carrier 48/50TJ,TM016-028 and 48/50HJ015,017 Vertical Discharge Rooftop Unit

ERV

Unit

Curb

27

Rooftop Unit

Rooftop Unit



62M ERV Unit

Supply

B

Return

ERV Wheel

TOP VIEW

A

Supply

Accessory

Transition

62M170-285 ERV Unit

Locator pieces

(included with


ERV Curb

LEGEND



A

Return


38 3/4"

ERV Curb

49 5/8"

A

45 1/2"

Rooftop

Unit

Curb

Curb Detail

38 3/4"

ERV

Unit

Curb

Rooftop Unit Curb

Side View A-A

Locator pieces

(included with

ERV Curb)

0"

ROOFTOP MODEL

48/50PG

ROOFTOP SIZE

03-07

08-14

62M TRANSITION

62M-BTR-PG26-D

62M-BTR-PG712-D

ERV CURB

62M-A-CRB-14MC

62M-A-CRB-14MC


A B

80 5 /

16

92 3 /

4

44 11 /

16

53 15 /

16

Fig. 29 — 62MD,ME170-285 Coupled with Carrier 48/50PG03-14 Vertical Discharge Rooftop Unit

28

Rooftop Unit

Rooftop Unit



62M ERV Unit

B

ERV Wheel

TOP VIEW

A


62M170-285 ERV Unit

Locator pieces

(included with


ERV Curb

LEGEND



A


38 3/4"

ERV Curb

49 5/8"

A

45 1/2"

Rooftop

Unit

Curb

Curb Detail

38 3/4"

ERV

Unit

Curb

Rooftop Unit Curb

Side View A-A

Locator pieces

(included with

ERV Curb)

0"

ROOFTOP MODEL

48/50PG

ROOFTOP SIZE

03-07

08-14

62M TRANSITION

62M-BTR-PG26-H

62M-BTR-PG712-H

ERV CURB

62M-B-CRB-14MC

62M-B-CRB-14MC


A B

80 5 /

16

92 3 /

4

44 11

53 15 /

/

16

16

Fig. 30 — 62MD,ME170-285 Coupled with Carrier 48/50PG03-14 Horizontal Discharge Rooftop Unit

29

Rooftop Unit

Outside Air Hood (See Note 2)

62M ERV Unit

Rooftop Unit

Curb

Horizontal / Return Duct

(field supplied)

Rooftop Unit

Accessory

Transition

Accessory

Transition

62M170-285 ERV Unit

ERV Curb

B

O/A Hood

Relief Hood

LEGEND


O/A — Outdoor Air

NOTES:


2. Transition includes a new outside air hood, which allows air intake through the front of the hood rather than the bottom. The new hood will use the filters from the original rooftop unit hood.

Top View

A

A


Rooftop Unit Curb

44 3/4”

49 5/8”

ERV Curb

A

45 1/2”

Curb Detail

Rooftop

Unit

Curb

44 3/4"

ERV

Unit

Curb

Side View A-A

Top View

ROOFTOP MODEL

48/50PG

48/50HJ

ROOFTOP SIZE

20-28

020-028

62M TRANSITION

62M-BTR-HG1525-H

62M-BTR-HG1525-H

ERV CURB

62M-B-CRB-14MC

62M-B-CRB-14MC


A B

114.4

78.6

114.4

78.6

Fig. 31 — 62MD,ME170-285 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Horizontal Discharge Rooftop Unit

30

Rooftop Unit

Outside Air Hood (See

Note 2)

62M ERV Unit

Rooftop Unit

Top View

Standard HVAC Unit

Roofcurb

Accessory

Transition

Accessory

Transition

ERV Curb

62M170-285 ERV Unit

O/A Hood

LEGEND


O/A — Outdoor Air

NOTES:



Relief Hood

B

A


Rooftop Unit Curb

44 3/4”

49 5/8”

A A

45 1/2”

Curb Detail

Rooftop

Unit

Curb

44 3/4"

ERV

Unit

Curb

Side View A-A

ERV Curb

Top View

ROOFTOP MODEL

48/50PG

48/50HJ

ROOFTOP SIZE

20-28

020-028

62M TRANSITION

62M-BTR-HG1525-D

62M-BTR-HG1525-D

ERV CURB

62M-B-CRB-14MC

62M-B-CRB-14MC


A

114.4

B

78.6

114.4

78.6

Fig. 32 — 62MD,ME170-285 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Vertical Discharge Rooftop Unit

31

Filter access door shipped with transition

62M ERV Unit

Rooftop Unit

Outside air hood for optional economizer

Rooftop Unit

Top View

Accessory

Transition

Accessory

Transition

ERV Curb

Supply

62M330-640 ERV Unit

O/A hood

LEGEND


O/A — Outdoor Air

NOTE: When using a 62M ERV unit coupled with a

Carrier rooftop unit, the rooftop factory or fieldinstalled economizer cannot be used. Use the 62M economizer instead.

Outside air hood for optional economizer

Exhaust hood

Rooftop Unit curb


ERV curb

78 1/4"

A A

55 13/32"

Rooftop

Unit

Curb

33 1/2"

ERV

Unit

Curb

Supply

50"

9"

60 11/32"

Side View A-A

33 1/2"

Top View

ROOFTOP UNIT MODEL ROOFTOP SIZE TRANSITION P/N

48/50HJ,TF,TJ,TM 012,014 62M-CTR-HJ1012-D

ERV CURB P/N

62M-C-CRB-14M


62MA-900---006

Fig. 33 — 62MD,ME330-640 Coupled with Carrier 48/50HJ,TF,TJ,TM012,014 Vertical Discharge Rooftop Unit

32

Rooftop Unit

Filter access door shipped with transition

62M ERV Unit

LEGEND


O/A — Outdoor Air

R/A — Return Air

S/A — Supply Air


Horizontal supply duct

(field supplied)

Horizontal return (field supplied)

Rooftop Unit

Top View

Accessory

Transitions

62M330-640

ERV Unit

Accessory

Transition

ERV Curb

Accessory

Transitions

Top View with Economizer

62M 330-640 ERV Unit

10 to 12 1/2 Ton

Rooftop Unit

S/A

78 1/4"

O/A hood

S/A

Duct

R/A

Exhaust hood

R/A

Duct

Rooftop Unit curb


Optional

Horizontal

Economizer Exhaust hood

ERV Curb

A A 55 13/32"

Rooftop

Unit

Curb

33 1/2"

ERV

Unit

Curb

Side View A-A

9"

50"

60 11/32"

33 1/2"

Top View


48/50HJ,TF,TJ,TM Without Economizer

48/50HJ,TF,TJ,TM With Economizer

ROOFTOP SIZE

012,014

012,014

TRANSITION P/N

62M-CTR-HJ1012-H

62M-CTR-HJ1012-HEC

ERV CURB P/N

62M-C-CRB-14M

62M-C-CRB-14M


—

62MA-900---010

Fig. 34 — 62MD,ME330-640 Coupled with Carrier 48/50HJ,TF,TJ,TM012,014 Horizontal Discharge Rooftop Unit

33

Rooftop Unit

LEGEND


O/A — Outdoor Air

NOTES:


2. The ERV cannot be coupled with a horizontal return 48/50TJ,TM or HJ 15 to

25 ton rooftop unit.

62M ERV Unit

Rooftop Unit

Rooftop Unit Curb

Accessory

Transition

Accessory

Transition

ERV curb

62M330-640

ERV Unit

TJ/HJ 15 to 25 Ton

Rooftop Unit Accessory

Transition

62M ERV Unit

Optional

Economizer

O/A hood

Exhaust hood

Top View Side View

Rooftop Unit Curb


ERV curb

74 1/4"

A A

55 13/32"

Rooftop

Unit

Curb

53 3/4"

ERV

Unit

Curb

Side View A-A

11 1/2"

67 1/16"*

53 3/4" 60 11/32"

Top View

*Length is 89 1 /

16

″ for 48/50TM028 units.

ROOFTOP UNIT

MODEL

48/50TJ,TM

48/50HJ


016-028

015,017

62M-BTR-HJ1525-D

62M-BTR-HJ1525-D

ERV CURB P/N

62M-B-CRB-14S

62M-B-CRB-14S

Fig. 35 — 62MD,ME330-640 Coupled with Carrier 48/50TJ,TM016-028 and 48/50HJ015,017

Vertical Discharge Rooftop Unit

34

Rooftop Unit

Rooftop 48/50PG Unit



62M ERV Unit

Supply

Return


B

ERV Wheel

TOP VIEW

A

Supply

62M330-640 ERV Unit

ERV Curb

LEGEND



A

Return


38 3/4

"

ERV Curb

60 11/32"

A

55 13/32"

Curb Detail

Rooftop

Unit

Curb

38 3/4"

ERV

Unit

Curb

Rooftop Unit Curb

Side View A-A

C

ROOFTOP UNIT

MODEL

48/50PG

ROOFTOP SIZE

08-14

62M TRANSITION

62M-CTR-PG712-D

ERV CURB

62M-C-CRB-14M

A

92 3 /

4


B

53 15 /

16

C

10

Fig. 36 — 62MD,ME330-640 Coupled with Carrier 48/50PG08-14 Vertical Discharge Rooftop Unit

35

Rooftop Unit

Rooftop Unit



62M ERV Unit


ERV Wheel

TOP VIEW

62M330-640 ERV Unit

ERV Curb

LEGEND



B

A

A


38 3/4"

ERV Curb

60 11/32"

55 13/32"

Curb Detail

Rooftop

Unit

Curb

38 3/4"

C

A ERV

Unit

Curb

Side View A-A

Rooftop Unit Curb

ROOFTOP UNIT

MODEL

48/50PG

ROOFTOP SIZE

08-14

62M TRANSITION

62M-CTR-PG712-H

ERV CURB

62M-C-CRB-14M

A

92 3 /

4


B

53 15 /

16

C

10

Fig. 37 — 62MD,ME330-640 Coupled with Carrier 48/50PG08-14 Horizontal Discharge Rooftop Unit

36

Rooftop Unit


Note 2)

62M ERV Unit

Horizontal Return Duct

(Field Supplied)

Rooftop Unit

Accessory

Transition

Accessory

Transition

Rooftop Unit Curb

ERV Curb

O/A Hood

Relief Hood

62M330-640 ERV Unit

LEGEND


O/A — Outdoor Air

NOTES:



Top View

B

A


Rooftop Unit Curb

44 3/4"

60 11/32"

A A

55 13/32"

Curb Detail

Rooftop

Unit

Curb

44 3/4"

ERV

Unit

Curb

Side View A-A

ERV Curb

Top View

ROOFTOP MODEL

48/50PG

48/50HJ

ROOFTOP SIZE

20-28

020-028

62M TRANSITION

62M-CTR-HG1525-H

62M-CTR-HG1525-H

ERV CURB

62M-C-CRB-14M

62M-B-CRB-14M


A

114.4

B

78.6

114.4

78.6

Fig. 38 — 62MD,ME330-640 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Horizontal Discharge Rooftop Unit

37

Rooftop Unit


Note 2)

62M ERV Unit

Rooftop Unit Curb

Rooftop Unit

Accessory

Transition

Top View

Accessory

Transition

ERV Curb

62M330-640 ERV Unit

O/A Hood

LEGEND


O/A — Outdoor Air

NOTES:



Relief Hood

B

A


Rooftop Unit Curb

44 3/4"

60 11/32"

A A

55 13/32"

Curb Detail

Rooftop

Unit

Curb

44 3/4"

ERV

Unit

Curb

Side View A-A

ERV Curb

Top View

ROOFTOP MODEL

48/50PG

48/50HJ

ROOFTOP SIZE

20-28

020-028

62M TRANSITION

62M-CTR-HG1525-D

62M-CTR-HG1525-D

ERV CURB

62M-C-CRB-14M

62M-B-CRB-14M


A B

114.4

78.6

114.4

78.6

Fig. 39 — 62MD,ME330-640 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Vertical Discharge Rooftop Unit

38

TOP VIEW

Accessory

Transition

62M ERV Unit

LEGEND


O/A — Outdoor Air

NOTES:


2. ERV cannot be coupled to a horizontal return rooftop unit.

Outside air hood

Rooftop Unit

62M Unit

77 3/4"

SIDE VIEW

O/A hood

Exhaust hood

ROOF CURB LA YOUT

60.34"

0"

58 3/4"

Rooftop Unit Curb

ERV Curb

55.4"

Rooftop Unit

Economizer

See Note 1

ERV Curb Accessory

Transition

Standard

Rooftop Unit Curb


48/50A

ROOFTOP SIZE

020-060

TRANSITION P/N

62M-CTR-AJ2060-D

ERV CURB P/N

62M-C-CRB-14M

Fig. 40 — 62MD,ME330-640 Coupled with Carrier 48/50A020-060 Vertical Discharge Rooftop Unit

39

Rooftop Unit

62M ERV Unit

Top View

Rooftop Unit

Accessory

Transition

Rooftop

Unit Curb

Accessory

Transition

62M750,950 ERV Unit

ERV Curb

Rooftop Unit Curb

Exhaust Hood

O/A Hood

LEGEND


O/A — Outdoor Air

NOTES:

1. The standard factory economizer cannot be used when coupled with 62M750,950 units.

Contact factory for transition with economizer.

2. 62M750,950 units cannot be used with

48/50TJ and TM016-028 horizontal discharge rooftop units.


ERV Curb

74 1/4" A A 86.25"

Rooftop

Unit

Curb

31 9/16"

ERV

Unit

Curb

0"

Side View A-A

67.1"*

*Length is 89 1 /

16

″ for

48/50TM028 units.

31 9/16"

Top View

95.7"


48/50TJ,TM

48/50HJ

ROOFTOP SIZE

016-028

015,017

TRANSITION P/N

62M-DTR-HJ1525-D

62M-DTR-HJ1525-D

ERV CURB P/N

62M-D-CRB-14M

62M-D-CRB-14M


62MA-900---007

62MA-900---007

Fig. 41 — 62MD,ME750,950 Coupled with Carrier 48/50TJ,TM016-028 and 48/50HJ015,017 Vertical Discharge Rooftop Unit

40

Rooftop Unit

62M ERV Unit

Rooftop Unit

Accessory

Transition

Top View

Accessory

Transition

62M750,950 ERV

ERV Curb

O/A Hood

LEGEND


O/A — Outdoor Air

NOTE: The ERV unit can be used with a factoryinstalled economizer, if desired.

Relief Hood

B

A


ERV Curb

A

86 1/4"

Curb Detail

Rooftop

Unit

Curb

44 3/4"

ERV

Unit

Curb

Side View A-A

A 44 3/4” 95 3/4"

Top View

ROOFTOP MODEL

48/50PG

48/50HJ

ROOFTOP SIZE

20-28

020-028

62M TRANSITION

62M-DTR-HG1525-H

62M-DTR-HG1525-H

ERV CURB

62M-D-CRB-14M

62M-D-CRB-14M


A B

114.4

78.6

114.4

78.6

Fig. 42 — 62MD,ME750,950 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Vertical Discharge Rooftop Unit

41

Rooftop Unit

62M ERV Unit

Rooftop Unit Curb

Rooftop Unit

Accessory

Transition

Top View

Accessory

Transition

62M750,950 ERV

ERV Curb

O/A Hood

LEGEND


O/A — Outdoor Air

NOTE: The ERV unit can be used with a factory-installed economizer, if desired.

Relief Hood

B

A

A


Rooftop Unit Curb

ERV Curb

A

86 1/4"

44 3/4”

Top View

95 3/4"

Curb Detail

Rooftop

Unit

Curb

44 3/4"

ERV

Unit

Curb

Side View A-A

ROOFTOP MODEL

48/50PG

48/50HJ

ROOFTOP SIZE

20-28

020-028

62M TRANSITION

62M-DTR-HG1525-D

62M-DTR-HG1525-D

ERV CURB

62M-D-CRB-14M

62M-D-CRB-14M


A

114.4

B

78.6

114.4

78.6

Fig. 43 — 62MD,ME750,950 Coupled with Carrier 48/50PG20-28 and 48/50HJ020-028 Vertical Discharge Rooftop Unit

42

Rooftop Unit

62M ERV Unit

Rooftop Unit

RETURN AIR

SUPPLY AIR

Unit curb

Accessory

Transition

Accessory

Transition

62M750,950 ERV Unit

O/A Hood

ERV Curb

LEGEND


O/A — Outdoor Air

NOTES:

1. The standard factory economizer can be used in conjunction with 62M750,950 units.

2. 62M750,950 units cannot be used with horizontal discharge rooftop units.

Exhaust Hood

Rooftop Unit Curb


ERV Curb

0"

A A

86.25"

CURB DETAIL

Rooftop

Unit

Curb

57 9/16"

ERV

Unit

Curb

Side View A-A

57 9/16"

(See curb detail)

Top View

95.7"

77 3/4"


48/50A

ROOFTOP SIZE

020-060

TRANSITION P/N

62M-DTR-AJ2060-D

ERV CURB P/N

62M-D-CRB-14M

Fig. 44 — 62MD,ME750,950 Coupled with Carrier 48/50A020-060 Rooftop Unit

43

Exhaust hood

(outdoor units only)

Top View

Horizontal Discharge -

Stand-Alone Unit

Exhaust

Blower

Outside air hood


Optional

Pre-heater

2 in. pre-filters for exhaust

Top View

Down Discharge -

Stand-Alone Unit

Exhaust hood


Optional

Pre-heater

Exhaust blower

2 in. pre-filters for outside air

ERV wheel

Supply air blower

ERV Wheel

2 in. pre-filters exhaust Return/exhaust opening in base

Outside air blower, mounted over supply opening in base

Optional

Pre-heater

Outside air rainhood

2 in. pre-filters outside air

Outside air intake hood

(outside units only)

2 in. pre-filters outside air

ERV wheel

Hinged and latched access door (both sides)

Supply air blower

Side View

Down Discharge -

Stand-Alone Unit

Optional ERV roof curb

Supply duct for outside air (field provided)

Fig. 45 — 62M Airflow in Stand-Alone Applications

44

Step 3 — Rigging and Handling —

To transfer the unit from the shipping platform to the storage or installation site, refer to the rigging label on the unit and these instructions.

All panels must be in place when rigging. Unit is not designed for handling by fork truck. Damage to unit may result.

Refer to Table 1 for ERV unit weights. Check lifting devices for capacity constraints.

Hook rigging shackles through the holes or lifting eyes in the ERV unit.

NOTE: Some 62M units have lifting eyes, some 62M units have holes in the ERV base rail. See Fig. 46.

Connect lifting straps and spreader bars. See Fig. 46.

Spreader bars must be positioned to prevent cables from rubbing against the ERV unit.

Carefully lift the ERV unit and set on ERV roof curb. Do not drop the ERV unit onto the roof curb, as damage may occur. Avoid twisting or uneven lifting of the unit. Never lift the unit by the hoods or any means other than the provided lifting holes or eyes.

MOUNTING THE ERV UNIT INDOORS — The ERV unit can be mounted indoors. Follow all local and other applicable building codes.

All panels must be secured in place prior to lifting the ERV unit in to place. Follow all local and other applicable codes when lifting, locating and mounting the ERV unit. Damage to unit may result.

Locate the ERV Unit — Prior to locating the indoor ERV unit consider the intake and exhaust duct accessibility to outside walls or roof vents. When locating the ERV unit consider required service clearances.

See Table 1 for unit weights to determine if building structure reinforcements are required.

Determine a Method for Mounting — The method for mounting and securing the ERV unit to the building structure must be field designed and installed. Mounting methods will vary depending upon specific jobsite conditions.

NOTE: Hardware and pieces to secure ERV unit to the building structure must not interfere with the service clearances or duct requirements for the unit.

Lift the ERV Unit in Place — Secure the ERV unit to the building structure following all applicable local building codes.

Do not use the ERV duct system to support the ERV unit in any way. Follow all local and applicable building codes and manufacture and install the ductwork to the ERV unit per the duct opening connections. Equipment damage or personal injury may result.

Spreader Bars

RIGGING FOR ERV INSTALLATION

RIGGING HOLES ERV BASE RAIL

Fig. 46 — Rigging Details

RIGGING LIFTING EYES

45

UNIT 62M

NOMINAL CAPACITY (cfm)

CAPACITY RANGE (cfm)

MAXIMUM SHIPPING WEIGHT (lb)

Single-Wall Models

Double-Wall Models

MAXIMUM OPERATING WEIGHT (lb)



62MB,MC INDOOR UNIT DIMENSIONS (in.)

Length*

Width

Height

62MD,ME OUTDOOR UNIT DIMENSIONS (in.)†

Length*

Width

Height

ROTARY ENERGY EXCHANGER

Type

Size (Diam. x Depth) (in.)

Nominal Drive Motor Hp

SUPPLY/EXHAUST AIR FAN

Qty…Type

Drive Type

Fan Isolation

Wheel Dimensions (Diam. x Width)

Nominal Motor Hp

FILTERS (optional)

Type

Exhaust Air...Qty...Size (L x W x D) (in.)

Outside Air...Qty...Size (L x W x D) (in.)

Table 1 — Physical Data

040

400

100-550

255

367

235

347

29.75

29.88

29.75

075

750

500-1000

440

635

400

595

43.25

39.13

37.88

120

1200

1000-1400

462

657

422

617

43.25

39.13

37.88

170

1700

1400-2000

850

1135

790

1075

62.63

58.38

48.88

225

2250

2000-2500

900

1185

840

1125

62.63

58.38

48.88

285

2850

2500-3200

1000

1285

940

1225

62.63

58.38

48.88

48.43

31.24

29.72

60.75

50.13

37.88

60.75

55.13

37.88

87.13

69.38

48.88

87.13

69.38

48.88

87.13

69.38

48.88

22.5 x 2

N/A

Enthalpy Lightweight Polymer with Silica Gel Desiccant Coating

29.0 x 2

N/A

29.0 x 3

N/A

40.0 x 1.5

1 /

6

40.0 x 1.5

1 /

6

40.0 x 3

1 /

6

Direct

5.5 x 5.5

1 /

4

9 x 7

1 /

2

2….Forward Curved Centrifugal

Adjustable Belt Drive

Neoprene Pads

9 x 7

1

12 x 12

1

12 x 12

2

12 x 12

2

2-in. Pleated — 30% Efficiency

1….12 x 20 x 2 1….18 x 25 x 2 1….18 x 25 x 2 2….20 x 25 x 2 2….20 x 25 x 2 2….20 x 25 x 2

1….12 x 20 x 2 1….18 x 25 x 2 1….18 x 25 x 2 2….20 x 25 x 2 2….20 x 25 x 2 2….20 x 25 x 2

UNIT 62M

NOMINAL CAPACITY (cfm)

CAPACITY RANGE (cfm)

MAXIMUM SHIPPING WEIGHT (lb)



MAXIMUM OPERATING WEIGHT (lb)



62MB,MC INDOOR UNIT DIMENSIONS (in.)

Length

Width

Height

62MD,ME OUTDOOR UNIT DIMENSIONS (in.)†

Length

Width

Height

ROTARY ENERGY EXCHANGER

Type

Size (Diam. x Depth) (in.)

Nominal Drive Motor Hp

SUPPLY/EXHAUST AIR FAN

Qty…Type

Drive Type

Fan Isolation

Wheel Dimensions (Diam. x Width)

Nominal Motor Hp

FILTERS (optional)

Type

Exhaust Air...Qty...Size (L x W x D) (in.)

Outside Air...Qty...Size (L x W x D) (in.)

LEGEND

N/A — Not Applicable

*Add 10 in. to 62M040 units equipped with a preheater.

†Dimensions include outdoor air hoods.

**575-v motors are 1 /

3 hp.

330

3300

3000-3600

1300

1710

1220

1630

73.13

67.89

65.21

100.88

87.89

65.21

56.2 x 1.5

1 /

2

15 x 15

2

430

4300

3600-5000

1350

1760

1270

1680

73.13

67.89

65.21

100.88

87.89

65.21

Enthalpy Lightweight Polymer with Silica Gel Desiccant Coating

56.2 x 1.5

1

15 x 15

3

/

2

550

5500

5000-6000

1440

1850

1360

1770

73.13

67.89

65.21

100.88

87.89

65.21

56.2 x 3

1

5

/

2

640

6400

6000-6800

1590

2000

1510

1920

73.13

67.89

65.21

100.88

87.89

65.21

56.2 x 3

1 /

2

2...Forward Curved Centrifugal

Adjustable Belt Drive

Neoprene Pads

15 x 15 15 x 15

7 1 /

2

750

7500

6500-8500

2650

3270

2550

3170

108.3

97.87

77.4

143.45

121.87

77.4

68.0 x 3

1 /

4

18 x 18

7 1 /

**

2

950

9500

8500-10,500

2750

3370

2650

3270

108.3

97.87

77.4

143.45

121.87

77.4

68.0 x 3

1 /

4

**

18 x 18

10

2-in. Pleated — 30% Efficiency

6….16 x 20 x 2 6….16 x 20 x 2 6….16 x 20 x 2 6….16 x 20 x 2 6….20 x 24 x 2 6….20 x 24 x 2

6….16 x 20 x 2 6….16 x 20 x 2 6….16 x 20 x 2 6….16 x 20 x 2 6….20 x 24 x 2 6….20 x 24 x 2

46

Step 4 — Installing ERV Transitions —

When coupling ERV units with Carrier rooftop units an ERV transition is required to link the ERV unit and the Carrier rooftop unit together.

ERV UNIT COUPLED WITH A 3 to 12 1 /

2

TON HVAC

UNIT — Complete the following steps to install a transition to a 3 to 12 1 /

2 ton rooftop unit.

1. Remove the HVAC unit filter door and set aside for later use.

2. Remove the panel shipped on the HVAC unit covering the return air chamber. This panel can be discarded.

3. The 62M ERV transition for 3 to 12 1 /

2 ton rooftop units includes a replacement panel to cover the return opening.

Install the replacement panel, with hood scoop attached, onto the HVAC unit, over the return air chamber. Screw in place. The return/exhaust scoop will cover part of the return air opening in the HVAC unit.

NOTE: The standard transition does not seal tight around the return air opening on the HVAC unit. This allows for some air to flow back to the HVAC unit and some to be drawn back through the ERV unit.

4. Slide the transition between the ERV unit and the HVAC unit. Refer to Fig. 17-44 to orient the transition. Line up the transition so that it covers the openings in the HVAC unit and the ERV unit. The divider in the transition must separate the supply and return openings in the ERV unit.

Screw the mating flanges of the transition to the ERV unit through pre-punched holes. Caulk the seams watertight.

Screw the mating flanges on the other side of the transition to the new return air cover panel on the HVAC unit.

Caulk seams watertight.

5. On most models the filter access door shipped with the

HVAC unit will be reinstalled above the transition.

6. The transition includes a balancing damper to allow for the desired separation of the return/exhaust air between the ERV and HVAC units. This damper has a manual adjustment. During balancing, this damper will be adjusted to achieve desired exhaust cfm. The balancing damper can be accessed through a separate door in the transition or through the HVAC unit’s filter access door.

See Fig. 17-44.

Step 5 — Make Electrical Connections

Prior to performing service or maintenance operations on the ERV unit, turn off and disconnect all power switches to the unit. Be aware that there may be more than one disconnect switch. Electrical shock could cause serious personal injury or death.

IMPORTANT: Only trained, qualified installers and service technicians should install, wire, start-up and service equipment.

POWER SUPPLY — The electrical characteristics of the available power supply must agree with the unit nameplate rating. Supply voltage must be within the limits shown. See

Tables 2 and 3 for electrical and configuration data.

ELECTRICAL CONNECTIONS — The ERV unit must have its own electrical disconnect box. If the disconnect option has not been ordered from the factory, it must be field supplied and installed per local codes. See Tables 2 and 3.

If the ERV unit has an electric pre-heater factory installed, it will be wired through the ERV unit disconnect.

NOTE: Most ERV units have electrical interlock safety switches on the access doors, which will not allow the ERV unit to operate if either of the access doors are opened.

Low Voltage Wiring — Wire low voltage per diagrams. For coupled applications, there will be a brown and black wire in the exhaust chamber, which must be tied into the HVAC unit’s indoor fan so that when the indoor fan is activated, the ERV unit will be activated.

48/50TJ, HJ 3 to 12 1 /

2

Ton Rooftop Units with Economizers

— The brown and black wires can be plugged into the economizer jumper plug on the HVAC unit’s economizer harness.

Insert the brown wire from the ERV unit into terminal 4 in the jumper plug and insert the black wire from the ERV unit into terminal 3 in the jumper plug. See Fig. 47.

If the 3 to 12 1 /

2 ton rooftop unit has an economizer installed, the economizer will have an end switch attached to the economizer actuator. The end switch must be wired into the

ERV unit as shown in Fig. 48.

For ERV units coupled with units with factory-installed economizers, (48/50TM, HJ 15 to 25 ton units 48/50HG, PG 15 to 25 ton units) the ERV transitions to these rooftop units include an economizer end switch. This switch mounts to the hub of the economizer damper gear as shown in Fig. 49. Set the end switch so that the ERV unit’s outside air blower is deactivated during economizer mode.

For stand-alone units, the ERV unit is jumpered from terminals 6 and 8 and 7 and 9, providing for continuous operation.

The ERV unit should be connected to an on-off device such as a CO

2 sensor.

High Voltage Wiring (Fig. 50-53) — Connect high voltage wiring to the disconnect per Fig. 50, 52 and 53. Check blower rotation direction and adjust if necessary.

47

UNIT SIZE

62M

040

075

120

170

VOLTAGE

(V-Ph-Hz)

115-1-60

230-1-60

208/230-3-60

460-3-60

575-3-60

115-1-60

230-1-60

208/230-3-60

460-3-60

575-3-60

115-1-60

230-1-60

208/230-3-60

460-3-60

575-3-60

230-1-60

208/230-3-60

460-3-60

575-3-60

ERV WHEEL

FLA

0.7

0.3

0.7

0.3

0.7

0.3

0.6

Table 2 — Electrical Data Without VAV Option

EXHAUST AND SUPPLY MOTOR

NEC - FLA

3.96

1.74†

9.8

4.9

2.2

1.1

0.9

16

8

4.2

2.1

1.7

8

4.2

2.1

1.7

Hp

.6

0.5

1

1

HEATER

SIZE

(kW)

5

—

5

8

10

—

5

8

—

2

2

5

5

8

—

10

—

5

8

10

10

—

5

8

5

—

2

5

—

—

2

2

5

2

5

—

—

2

5

—

—

2

2

5

5

—

2

—

—

2

—

2

—

2

—

2

POWER SUPPLY

FLA MCA MOCP

9.27

9.90

12.87

26.64

31.64

31.64

4.44

4.35

5.66

13.76

16.37

16.37

4.11

4.35

5.66

9.66

11.30

11.30

2.34

4.85

2.72

5.86

4.89

7.40

1.87

3.75

2.17

4.18

20.69

24.5

3.91

6.90

31.85

38.08

46.24

49.24

64.17

78.85

78.85

10.46

12.25

15.93

19.16

23.12

24.62

32.2

39.42

39.42

5.03

5.50

7.15

10.05

11.78

12.18

17.59

21.21

21.21

2.53

2.75

3.58

5.04

5.89

6.09

8.81

10.60

10.60

2.10

2.25

2.93

4.11

7.13

4.76

8.53

4.94

8.53

33.09

40.00

52.00

50.48

61.74

69.39

76.57

94.35

95.48

16.66

20.00

26.00

25.36

30.87

34.70

38.40

47.17

47.74

9.03

10.50

13.65

14.05

16.78

18.68

21.59

26.21

26.22

4.53

5.25

6.83

7.04

8.39

9.34

10.81

13.10

13.11

3.70

5.71

4.25

6.76

5.53

7.54

8.73

10.53

10.55

16.93

20.00

26.00

38.67

47.17

47.74

51.71

63.48

63.48

60.41

74.35

74.35

9.33

10.50

13.65

21.90

26.21

26.22

29.44

35.63

35.63

34.46

41.91

41.91

4.69

5.25

6.83

10.97

13.10

13.11

14.74

17.82

17.82

17.26

20.96

20.96

3.88

4.25

5.53

8.90

10.53

10.55

11.92

14.30

14.30

13.93

16.82

16.82

PRE-HEATER

(Optional)

FLA

5.03

—

21.74

34.78

43.48

—

12.57

20.11

5.03

12.57

—

2.51

6.28

—

2.01

25.13

—

6.28

10.05

12.57

—

5.03

8.04

10.05

2.01

5.03

—

17.39

43.48

—

8.70

21.74

—

—

5.03

12.57

—

2.51

6.28

—

—

2.01

—

17.39

43.48

—

8.7

21.74

—

17.39

—

8.7

—

5.03

—

2.51

30

30

30

30

30

60

30

30

30

30

60

80

100

30

40

60

60

80

200

30

40

60

30

30

40

DISCONNECT

(Optional)

Amps

Fuse Size*

Amps

30

40

12

30

5

15

30

5

10

3

5

2

4

30 40

60

100

30

60

6

12

20

4

45

70

15

20

35

30

90

25

30

45

12

18

25

6

6

10

3

50

60

5

8

30

12

25

35

40

6

12

18

20

5

10

12

15

10

25

45

60

70

8

12

5

6

LEGEND

ERV

FLA

— Energy Recovery Ventilator

— Full Load Amps

Hp — Horsepower

MCA — Minimum Circuit Amps

MOCP — Maximum Overcurrent Protection

NEC — National Electric Code

N/A — Not Applicable

*Fused disconnect only.

†Exhaust and supply fan motors are 230-1-60.

48

UNIT SIZE

62M

225

285

330

430

550

VOLTAGE

(V-Ph-Hz)

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

0.6

0.6

1.2

1.2

1.2

Table 2 — Electrical Data Without VAV Option (cont)

ERV WHEEL

FLA

EXHAUST AND SUPPLY MOTOR HEATER

SIZE

NEC - FLA Hp (kW)

6.8

3.4

2.7

6.8

3.4

2.7

6.8

3.4

2.7

9.6

4.8

3.9

15.2

7.6

6.1

2

2

3

5

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

—

5

8

10

—

5

8

10

—

5

8

10

—

5

8

10

—

5

8

10

—

5

8

10

POWER SUPPLY PRE-HEATER

(Optional)

FLA MCA MOCP FLA

6.05

8.25

9.98

14.09 18.30

18.30

16.10 20.82

20.82

21.13 27.10

27.10

20.73 25.50

32.40

40.84 50.63

52.51

45.86 56.91

57.53

58.43 72.62

72.62

10.42 13.50

16.80

20.47 26.07

26.85

22.98 29.21

29.37

29.26 37.06

37.06

8.45 11.25

13.88

16.49 21.30

21.92

18.50 23.82

23.93

23.53 30.10

30.10

31.93 39.50

50.60

52.04 64.63

70.71

57.06 70.91

75.73

69.63 86.62

88.30

16.02 20.50

25.90

26.07 33.07

35.95

28.58 36.21

38.47

34.86 44.06

44.75

12.85 16.75

21.03

20.89 26.80

29.07

22.90 29.32

31.08

27.93 35.60

36.10

14.53 17.00

22.10

27.10 32.71

34.67

34.64 42.13

42.21

39.66 48.41

48.41

7.29

8.50

11.05

13.57 16.35

17.33

17.34 21.07

21.10

19.86 24.21

24.21

5.88

6.75

8.78

10.90 13.03

13.80

13.92 16.80

16.82

15.93 19.32

19.32

14.53 17.00

22.10

27.10 32.71

34.67

34.64 42.13

42.21

39.66 48.41

48.41

7.29

8.50

11.05

13.57 16.35

17.33

17.34 21.07

21.10

19.86 24.21

24.21

5.88

6.75

8.78

10.90 13.03

13.80

13.92 16.80

16.82

15.93 19.32

19.32

15.13 18.50

23.30

35.24 43.63

43.63

40.26 49.91

49.91

52.83 65.62

65.62

7.62 10.00

12.25

17.67 22.57

22.57

20.18 25.71

25.71

26.46 33.56

33.56

—

20.11

25.13

37.70

—

10.05

12.57

18.85

—

8.04

10.05

15.08

—

10.05

12.57

18.85

—

8.04

10.05

15.08

—

8.04

10.05

15.08

—

20.11

25.13

37.70

—

20.11

25.13

37.70

—

10.05

12.57

18.85

—

6.28

10.05

12.57

—

5.03

8.04

10.05

—

5.03

8.04

10.05

—

12.57

20.11

25.13

—

12.57

20.11

25.13

—

6.28

10.05

12.57

30

40

60

60

30

30

30

30

30

30

30

30

30

40

60

60

DISCONNECT

(Optional)

Amps

18

20

30

40

20

8

12

15

Fuse Size*

Amps

20

30

40

45

10

15

20

45

10

15

30

30

60

80

30

40

30

40

80

100

30

40

60

30

40

60

100

200

30

60

30

40

40

60

20

50

70

15

25

35

12

20

30

50

70

80

25

35

40

20

25

30

35

8

18

20

25

30

12

20

25

30

20

40

45

60

8

12

15

18

49

Table 2 — Electrical Data Without VAV Option (cont)

UNIT SIZE

62M

640

750

950

VOLTAGE

(V-Ph-Hz)

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

ERV WHEEL

FLA

1.2

2.5

1.2

1.4

2.5

1.2

1.4

LEGEND


FLA — Full Load Amps

Hp — Horsepower





*Fused disconnect only.

†Exhaust and supply fan motors are 230-1-60.

EXHAUST AND SUPPLY MOTOR HEATER

SIZE

NEC - FLA Hp (kW)

22

11

9

22

11

9

30.8

14

11

7.5

10

—

10

15

20

—

10

15

20

—

10

15

20

—

10

15

20

—

10

15

20

—

10

15

20

—

8

10

15

—

8

10

15

—

8

10

15

POWER SUPPLY

FLA MCA MOCP

45.53

56.50

72.70

65.64

81.63

92.81

70.66

87.91

97.83

83.23 103.62 110.40

22.82

29.00

36.95

32.87

41.57

47.00

35.38

44.71

49.52

41.66

52.56

55.80

18.65

24.00

30.45

26.69

34.05

38.49

28.70

36.57

40.50

33.73

42.85

45.53

46.83

58.13

74.00

71.96

89.54

99.13

84.53 105.25 111.70

97.09 120.95 124.26

23.36

29.00

36.95

35.93

44.71

49.52

42.21

52.56

55.80

48.49

60.41

62.08

19.53

24.25

30.65

29.58

36.82

40.70

34.61

43.10

45.73

39.64

49.38

50.76

64.46

80.13 102.60

92.25 114.86 130.39

106.15 132.23 144.29

120.04 149.60 158.18

29.36

36.50

46.70

41.93

52.21

59.27

48.21

60.06

65.55

54.49

67.91

71.83

23.53

29.25

37.15

33.58

41.82

47.20

38.61

48.10

52.23

43.64

54.38

57.26

PRE-HEATER

(Optional)

FLA

DISCONNECT

(Optional)

Amps

100

Fuse Size†

Amps

70

—

27.79

41.69

55.58

—

12.57

18.85

25.13

—

12.57

18.85

25.13

—

10.05

15.08

20.11

—

10.05

15.08

20.11

—

8.04

10.05

15.08

—

25.13

37.70

50.26

—

20.11

25.13

37.70

—

10.05

12.57

18.85

200

60

60

80

40

60

100

200

60

80

80

40

60

200

60

80

80

100

60

80

90

110

35

45

110

125

50

45

70

90

50

30

35

40

30

40

45

50

100

35

45

50

60

N/A

45

50

60

70

35

45

50

Table 3 — Electrical Data With VAV Option

UNIT SIZE

62M*

075

120

170

225

VFD

VOLTAGE

V-Ph-Hz

115-1-60

230-1-60**

208/230-3-60

460-3-60

575-3-60

115-1-60

230-1-60**

208/230-3-60

460-3-60

575-3-60

230-1-60**

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

ERV

WHEEL

FLA

VFD

CURRENT

INPUT

VALUE

AMP

EXHAUST AND SUPPLY

FAN MOTOR

NEC - FLA Hp

HEATER

SIZE

(kW)

0.7

0.3

0.7

0.3

0.6

0.6

9.2

5.2

2.8

1.5

2.1

16.6

9.6

5.3

2.6

2.1

9.6

5.3

2.6

2.1

8.2

4.2

3.6

2.2

1.1

0.9

4.2

2.1

1.7

4.2

2.1

1.7

6.8

3.4

2.7

0.5

1

1

2

8

10

—

5

8

10

—

5

8

10

—

5

8

10

—

5

8

10

—

5

8

10

—

5

8

10

—

5

2

5

—

2

5

—

5

—

5

8

—

2

2

5

—

2

5

—

5

—

2

5

—

2

2

5

—

2

5

—

54.88

67.44

67.44

63.57

78.31

78.31

11.56

13.28

17.27

24.12

28.99

29.83

31.66

38.41

38.41

36.69

44.70

44.70

5.70

6.51

8.46

11.98

14.36

14.75

15.75

19.08

19.08

18.26

22.22

22.22

4.58

5.13

6.67

9.61

11.41

11.69

12.62

15.18

15.18

14.63

17.69

17.69

17.39

20.57

26.74

29.95

36.28

39.31

37.49

45.70

46.85

42.52

51.99

51.99

8.82

10.42

13.54

15.11

18.27

19.82

18.88

22.98

23.59

21.39

26.12

26.12

7.66

8.97

11.66

12.68

15.26

16.69

15.70

19.03

19.71

17.71

21.54

21.72

19.75

23.00

29.90

37.14

44.74

47.29

63.23

77.35

77.35

11.05

13.02

16.93

19.74

23.89

25.62

32.79

40.19

40.19

6.26

7.03

9.14

11.28

13.31

14.17

18.82

22.74

22.74

3.24

3.65

4.74

5.76

6.79

7.25

9.53

11.50

11.50

4.41

6.42

5.13

7.64

6.67

8.68

9.43

11.41

11.69

34.55

41.50

53.95

51.94

63.24

71.34

78.03

95.85

97.43

19.80

23.96

31.15

28.49

34.83

39.84

41.54

51.13

52.88

11.26

13.28

17.27

16.28

19.56

22.29

23.82

28.99

29.83

5.53

8.05

6.51

8.46

9.65

10.98

11.82

14.36

14.75

4.41

5.13

6.67

6.42

7.64

8.68

9.43

11.41

11.69

20.10

23.96

31.15

41.84

51.13

52.88

POWER SUPPLY

FLA MCA MOCP

PRE-HEATER

(Optional)

FLA

80

100

200

40

60

80

30

30

40

40

80

80

100

30

40

60

60

DISCONNECT

(Optional)

Amps

40

60

100

30

60

30

30

30

40

60

30

40

30

Fuse Size†

Amps

17.5

20

6

10

15

17.5

25

35

35

40

8

12

60

70

15

25

45

50

12

17.5

20

25

10

15

17.5

20

8

10

30

50

8

10

12

6

50

15

20

25

70

90

30

35

10

50

6

8

20

5

6

10

25

40

8

12

25

45

70

15

10.05

12.57

—

5.03

8.04

10.05

—

12.57

34.98

43.48

—

12.57

20.11

25.13

—

6.28

20.11

25.13

—

6.28

10.05

12.57

—

5.03

8.04

10.05

—

2.51

6.28

—

2.01

5.03

—

21.74

17.39

43.48

—

8.70

21.74

—

5.03

12.57

12.57

—

2.51

6.28

—

2.01

5.03

—

—

17.39

43.48

—

8.70

21.74

—

5.03

51

Table 3 — Electrical Data With VAV Option (cont)

UNIT SIZE

62M*

285

330

430

550

VFD

VOLTAGE

V-Ph-Hz

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

ERV

WHEEL

FLA

VFD

CURRENT

INPUT

VALUE

AMP


FAN MOTOR

NEC - FLA Hp

HEATER

SIZE

(kW)

0.6

1.2

1.2

1.2

8.2

4.2

3.6

8.2

4.2

3.6

11.3

5.6

4.8

17.8

9

7.6

6.8

3.4

2.7

6.8

3.4

2.7

9.6

4.8

3.9

15.2

7.6

6.1

2

2

3

5

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

—

5

8

10

—

5

8

10

—

5

8

10

—

8

10

15

—

8

10

15

—

8

10

15

—

8

10

15

LEGEND



Hp — Horsepower





VFD — Variable Frequency Drive

*The VAV option is not available on 62M040 units.

†Fused disconnect only.

**Exhaust and supply fan motors are 230-3-60.

17.39

20.57

26.74

29.95

36.28

39.31

37.49

45.70

46.85

42.52

51.99

51.99

8.82

10.42

13.54

15.11

18.27

19.82

18.88

22.98

23.59

21.39

26.12

26.12

7.66

8.97

11.66

12.68

15.26

16.69

15.70

19.03

19.71

17.71

21.54

21.72

17.99

20.57

26.74

38.09

45.70

46.85

43.12

51.99

51.99

55.69

67.70

67.70

9.15

10.42

13.54

19.20

22.98

23.59

21.71

26.12

26.12

28.00

33.98

33.98

7.83

8.97

11.66

15.87

19.03

19.71

17.88

21.54

21.72

22.91

27.82

27.82

24.03

28.13

36.56

44.14

53.26

56.67

49.16

59.54

61.69

61.73

75.25

75.25

12.07

14.06

18.28

22.12

26.63

28.33

24.63

29.77

30.85

30.91

37.62

37.62

10.29

12.05

15.66

18.33

22.10

23.71

20.34

24.61

25.72

25.37

30.90

30.90

37.16

44.53

57.89

57.26

69.66

78.00

62.29

75.95

83.02

74.85

91.65

95.59

18.73

22.40

29.11

28.78

34.96

39.17

31.30

38.10

41.68

37.58

45.96

47.96

15.83

18.97

24.66

23.87

29.02

32.70

25.88

31.54

34.71

30.91

37.82

39.74

POWER SUPPLY

FLA MCA MOCP

PRE-HEATER

(Optional)

FLA

DISCONNECT

(Optional)

Amps

40

60

30

40

30

40

60

80

30

40

30

40

60

80

100

30

40

60

30

40

80

100

200

40

60

30

40

60

Fuse Size†

Amps

18

25

30

35

35

50

60

70

10

18

20

25

12

20

25

30

10

15

17.5

20

25

45

50

60

25

35

45

50

12

17.5

20

25

20

30

30

35

25

35

40

45

50

70

80

90

15

20

25

30

—

20.11

25.13

37.70

—

10.05

12.57

18.85

—

10.05

12.57

18.85

—

8.04

10.05

15.08

—

5.03

8.04

10.05

—

20.11

25.13

37.70

—

12.57

20.11

25.13

—

6.28

10.05

12.57

—

10.05

12.57

18.85

—

8.04

10.05

15.08

—

8.04

10.05

15.08

—

20.11

25.13

37.70

52

Table 3 — Electrical Data With VAV Option (cont)

UNIT SIZE

62M*

640

750

950

VFD

VOLTAGE

V-Ph-Hz

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

208/230-3-60

460-3-60

575-3-60

ERV

WHEEL

FLA

VFD

CURRENT

INPUT

VALUE

AMP


FAN MOTOR

NEC - FLA Hp

HEATER

SIZE

(kW)

1.2

2.5

1.2

1.4

2.5

1.2

1.4

26

12.9

11.5

26

12.9

11.5

34

16.5

14

22

11

9

22

11

9

30.8

14

11

7.5

10

—

10

15

20

—

10

15

20

—

10

15

20

—

10

15

20

—

10

15

20

—

10

15

20

—

8

10

15

—

8

10

15

—

8

10

15

LEGEND



Hp — Horsepower





VFD — Variable Frequency Drive

*The VAV option is not available on 62M040 units.

†Fused disconnect only.

**Exhaust and supply fan motors are 230-3-60.

POWER SUPPLY

FLA MCA MOCP

53.61

65.10

84.64

73.72

90.24 104.74

78.75

96.52 109.77

91.31 112.23 122.33

26.65

32.29

41.98

36.70

44.86

52.03

39.21

48.00

54.55

45.50

55.85

60.83

23.62

28.71

37.33

31.66

38.76

45.37

33.67

41.28

47.38

38.70

47.56

52.40

54.91

65.10

84.64

80.05

96.52 109.77

92.61 112.23 122.33

105.18 127.93 134.90

27.20

32.29

41.98

39.76

48.00

54.55

46.05

55.85

60.83

52.33

63.71

67.11

24.50

28.71

37.33

34.55

41.28

47.38

39.58

47.56

52.40

44.61

53.84

57.43

70.86

85.00 110.50

98.65 119.74 138.29

112.55 137.11 152.19

126.44 154.48 166.08

34.28

41.15

53.49

46.85

56.85

66.06

53.13

64.71

72.34

59.41

72.56

78.62

29.63

35.12

45.66

39.68

47.69

55.71

44.71

53.97

60.74

49.73

60.25

65.76

PRE-

HEATER

(Optional)

FLA

—

27.79

41.69

55.58

—

12.57

18.85

25.13

—

12.57

18.85

25.13

—

10.05

15.08

20.11

—

10.05

15.08

20.11

—

8.04

10.05

15.08

—

25.13

37.70

50.26

—

20.11

25.13

37.70

—

10.05

12.57

18.85

DISCONNECT

(Optional)

Amps

Fuse Size†

Amps

100

200

60

80

60

80

100

200

60

80

60

80

200

80

100

60

80

110

125

N/A

N/A

50

60

70

70

45

50

60

60

35

45

50

50

40

50

60

60

80

100

110

125

35

45

45

50

80

100

100

110

40

50

50

60

53

Economizer harness/plug coming from control box in

HVAC unit.

Jumper plug shipped attached economizer plug.

Brown

Black

Jumper in plug leave.

Fig. 47 — Jumper Plug Detail

Actuator

(Motor)

Important: Remove and re-install through end switch

Economizer

End switch

Fig. 48 — Economizer End Switch Wiring

20

19

18

17

16

15

14

Economizer

Switch

Switch

Bracket

Fig. 49 — Economizer Switch Wiring

Economizer

Gear hub

20

19

18

17

16

15

14

54

55

56

57

58

START-UP

Do not operate the ERV unit without the filters and birdscreens installed, which prevent foreign objects from entering the unit.

Use the following information and the Start-Up Checklist on page CL-1 to check unit PRIOR to start-up.

Unit Preparation —

Check that the unit has been installed in accordance with these installation instructions and all applicable codes.

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

Internal Wiring —

Check all electrical connections in the control box. Tighten as required.

Rain Hoods —

Some ERV units will require the outside air and/or exhaust hood to be field installed. Caulk coupled flanges and screw to ERV unit.

NOTE: Units for indoor applications will not have rain hoods.

The outside air hood will include aluminum water entrainment filters, which should be in place prior to starting the unit.

Energy Recovery Wheel

DRIVE BELT — Turn the energy recovery wheel by hand to verify free operation. Inspect the belt, which drives the energy wheel rotation. Make sure the belt rides smoothly through the pulley and over the wheel rim.

AIR SEALS — Check that the air seals, located around the outside of the wheel and across the center, on 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. Re-check the air seals for tightness.

Air seal clearance may be checked by placing a sheet of paper, like a feeler gage, 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 the access door and apply power. Observe that the wheel rotates freely. If the wheel does not rotate or is binding, remove the cassette and adjust.

Blower 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 ERV unit will move some air, but will not perform properly.

To change the rotation, turn the power off and use the following procedure:

• Single-phase units — Rewire the motor per the instructions located on the motor.

• Three-phase units — Interchange any two power leads.

This can be done at the motor starter.

Airflow Settings and Adjustments —

Most ERV units have factory-installed airflow test ports, which allow the balancer of the job to easily measure the static pressure across the ERV wheel, and thus the system airflow cfm levels. The static is measured on both the supply and return sides of the wheel. See Fig. 54-56.

To achieve the highest level of effectiveness, the airflow across the supply and return should be equal.

FACTORY SETTING — The ERV unit is factory set to achieve the maximum airflow cfm within the cabinet’s range.

For example, a 62M170 unit has a range of 1,400 to 2,000 cfm airflow, and when shipped will be setup to achieve the

2,000 cfm airflow level. See Fig. 57-80.

CURVE SELECTION — Refer to the fan curve for the ERV unit being used for the application. See Fig. 57-80. Knowing the outside air intake cfm required and the external static pressure on the application, select the fan curve desired. The fan curve will indicate how to set the blower motor pulley to achieve the desired cfm level. If the job requirements are the same as the maximum ERV unit setup, then no blower adjustments are required.

ADJUST THE ERV BLOWER SPEED — If jobsite conditions require blower speeds other than the factory setting, then the ERV blower(s) will have to be adjusted. The fan curve will specify the number of turns to be made to the adjustable pulley on the blower motor. See Fig. 57-80.

Belt Drive Motors — Check pulley alignment and belt tension prior to set up. To change the speeds of the blowers:

1. Shut off power supply and tag disconnect.

2. Loosen belt tension.

3. Loosen adjustable (movable) pulley flange set screw. See

Fig. 81.

4. Screw adjustable pulley side toward the fixed side to increase speed or away from fixed side to decrease speed.

Increasing speed increases load on motor. Do not exceed maximum load for motor.

5. Set adjustable pulley side at nearest keyway of pulley hub and tighten set screw. See fan curves for speed change for each turn of the adjustable pulley.

Aligning Blower and Motor Pulleys — It is important that the pulleys be exactly in line with one another. See Fig. 82.

1. Loosen blower pulley set screw.

2. Align pulleys per illustration. Motor and blower shafts must be parallel.

3. Tighten pulley set screws.

Adjust Belt Tension — Loosen blower motor mounting nuts.

and slide motor mounting plate away from fan scroll for proper belt tension ( 1 /

2

-in. deflection with 7 to 10 lb of force.)

MEASURE MOTOR VOLTAGE, AMPERAGE AND FAN

RPM — Measure and record the input voltage and motor amperage(s). To measure the fan rpm, the blower door will need to be opened. Minimize measurement time because the motor may over-amp with the door removed. Do not operate units with access doors/panels open as the motors will overload. With the blower door closed, compare measured amps to the motor nameplate full load amps and correct if the ERV unit is over-amping.

BELT MAINTENANCE — Premature belt failures are frequently caused by improper belt tension (either too tight or too loose), or misaligned pulleys. The proper tension for operating a V-belt is the lowest tension at which the belts will not slip at peak load conditions. Check belt tension two weeks after startup and periodically thereafter. It is very important that the drive pulleys remain in proper alignment after adjustments are made.

Misalignment of pulleys will result in premature belt wear, noise, vibration, and power loss. Maintain belts and motors through the provided access panels. Refer to Fig. 82.

Text continued on page 74.

59

0.8

0.7

0.6

62M040

62M120

62M075

0.5

0.4

0.3

0.2

200 400 600 800 1000

Airflow (cfm)

*Data based on measurements taken using optional airflow test ports.

Fig. 54 — 62M040-120 ERV Wheel Pressure Drop*

1200 1400

1.2

1.1

1

0.9

0.8

62M170,225

62M285

62M330,430

0.7

0.6

0.5

0.4

1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000

Airflow (cfm)


Fig. 55 — 62M170-430 ERV Wheel Pressure Drop*

60

1.2

1.1

1

0.9

0.8

62M550,640 62M750,950

0.7

0.6

0.5

5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000

Airflow (cfm)


Fig. 56 — 62M550-950 ERV Wheel Pressure Drop* (cont)

61

600

500

400

300

200

100

0

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40

External Static Pressure (in. wg)

NOTE: Fan data includes pressure drop for 30% efficient 2-in. filters.

Fig. 57 — 62M040 Supply Air Fan Performance Curves

1.60

Supply Air High Speed

Supply Air Speed T hree

Supply Air Speed T wo

Supply Air Low Speed

400

300

200

100

600

500

0

0.00

0.20

0.40

0.60

0.80

1.00

1.20

1.40


Fig. 58 — 62M040 Exhaust Air Fan Performance Curves

1.60

Exhaust Air High Speed

Exhaust Air Speed Three

Exhaust Air Speed Two

Exhaust Air Low Speed

62

1400

1200

1000

800

600

400

200

0

0.1

0.3

0.5

0.7

0.9

External Static (in. wg)



1112 rpm: 2 turns

1058 rpm: 3 turns

1002 rpm: 4 turns

942 rpm: 5 turns

1200

1000

800

600

400

200

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9




1136 rpm: 2 turns

1081 rpm: 3 turns

1010 rpm: 4 turns

946 rpm: 5 turns

63

1575

1375

1175

975

775

575

375

0.2

0.4

0.6

0.8

1




1448 rpm: 2 turns

1315 rpm: 3 turns

1277 rpm: 4 turns

1194 rpm: 5 turns

1475

1275

1075

875

675

475

275

0.2

0.4

0.6

0.8

1.0




1399 rpm: 2 turns

1332 rpm: 3 turns

1244 rpm: 4 turns

1162 rpm: 5 turns

64

2800

2600

2400

2200

2000

1800

1600

1400

1200

1000

0.2

0.4

0.6



0.8

1


1121 rpm: 3 turns

1074 rpm: 4 turns

1017 rpm: 5 turns

937 rpm: 6 turns

1800

1600

1400

1200

2600

2400

2200

2000

1000

0.2

0.4

0.6



0.8

1


1068 rpm: 3 turns

1045 rpm: 4 turns

1018 rpm: 5 turns

977 rpm: 6 turns

65

3000

2500

2000

1500

1000

0.2

0.4

0.6

0.8

1




1159 rpm: 3 turns

1114 rpm: 4 turns

1054 rpm: 5 turns

3000

2500

2000

1500

1000

0.2

0.4

0.6

0.8



1


1077 rpm: 3 turns

1052 rpm: 4 turns

1024 rpm: 5 turns

964 rpm: 6 turns

66

3500

3000

2500

2000

1500

1000

0.1

0.3

0.5

0.7

0.9

1.1




1186 rpm: 2 turns

1109 rpm: 3 turns

1057 rpm: 4 turns

1010 rpm: 5 turns

3500

3000

2500

2000

1500

1000

0.1

0.3

0.5

0.7

0.9

1.1




1193 rpm: 2 turns

1147 rpm: 3 turns

1097 rpm: 4 turns

1062 rpm: 5 turns

67

4500

4000

3500

3000

2500

2000

0.10

0.20

0.30

0.40

0.50




833 rpm: 2 turns

803 rpm: 3 turns

763 rpm: 4 turns

4000

3800

3600

3400

3200

3000

2800

2600

2400

2200

2000

0.13

0.20

0.30

0.40



0.50


842 rpm: 2 turns

808 rpm: 3 turns

770 rpm: 4 turns

68

5500

5000

4500

4000

3500

3000

2500

0. 20 0. 40 0. 60 0. 80 1. 00




962 rpm: 3 turns

942 rpm: 4 turns

891 rpm: 5 turns

5500

5000

4500

4000

3500

3000

2500

0. 20 0. 40 0. 60 0. 80 1. 00




871 rpm: 4 turns

891 rpm: 5 turns

69

6500

6000

5500

5000

4500

4000

3500

3000

2500

2000

0.2

0.4

0.6

0.8



1.0

1.2


1109 rpm: 2 turns

1068 rpm: 3 turns

1014 rpm: 4 turns

968 rpm: 5 turns

6 500

6 000

5 500

5 000

4 500

4 000

3 500

3 000

2 500

2 000

0 .3

0 .4

0 .6

0 .8


1 .0

1 .2



1109 rpm: 2 turns

1049 rpm: 3 turns

998 rpm: 4 turns

947 rpm: 5 turns

70

7500

7000

6500

6000

5500

5000

0.25

0.45

0.65

0.85



1.00

1.20


1256 rpm: 2 turns

1174 rpm: 3 turns

1150 rpm: 4 turns

8000

7500

7000

6500

6000

5500

5000

0.4

0.5

0.6

0.7



0.9


1202 rpm : 0 turns

1152 rpm: 1 turn

1123 rpm: 2 turns

1096 rpm: 3 turns

71

9500

9000

8500

8000

7500

7000

6500

6000

5500

0.10

0.30

0.50

0.70

0.90



1.10


906 rpm: 0 turns

870 rpm: 1 turns

847 rpm: 2 turns

821 rpm: 3 turns

807 rpm: 4 turns

9000

8500

8000

7500

7000

6500

6000

5500

0.3

0.5

0.7

0.9



1.1


923 rpm : 0 turns

898 rpm: 1 turn

862 rpm: 2 turns

844 rpm: 3 turns

813 rpm: 4 turns

72

11500

11000

10500

10000

9500

9000

8500

8000

7500

7000

6500

0.10

0.30

0.50

0.70

0.90

1.10

External Stat ic (in. wg)



966 rpm: 3 turns

896 rpm: 4 turns

831 rpm: 5 turns

11000

10500

10000

9500

9000

8500

8000

7500

7000

0.3

0.5

0.7

0.9

1.1

External Stat ic (in. wg)



1024 rpm: 3 turns

962 rpm: 4 turns

929 rpm: 5 turns

73

Fig. 81 — Blower Motor Pulley Adjustment

Fig. 82 — Belt Alignment

Variable Air Volume Option —

This option can be used in conjunction with the CO

2 sensor option (ordered separately). Outside air and exhaust air blower speeds are independently controlled by variable frequency drives and modulated based upon space occupancy, which can be measured by CO

2

CO

2

. The more people in the space the greater the levels, the more outside air is introduced. This option eliminates over ventilating the space in less than full conditions. The ERV unit has completely different electrical characteristics when used with a variable air volume option. Refer to

Tables 2 and 3.

Operating Sequence

OCCUPIED MODE — While in occupied mode, the 62M

ERV will operate per the ERV Timer option (scheduling program), the CO

2 sensor input, a combination of the scheduling option and CO

2 input, or the economizer accessory.

Additionally, the low temperature lockout (LTLO) function locks out the 62M ERV if the outdoor-air temperature entering the wheel is below the set point. The LTLO is factory set at

–10 F, and can be field adjusted from –30 F to 100 F.

74

Occupied Mode, with CO

2

Sensor — When the CO is used, it will measure the space CO

2

2 sensor levels in parts per million (ppm). The 62M ERV CO

2 setting is factory set at

1,000 ppm but can be adjusted from 0 ppm to 2,000 ppm.

When either the scheduling program and/or the CO

2 sensor calls for ERV operation, the ERV will activate the following:

• ERV wheel

• Outdoor air blower motor

• EXH blower motor

• Two-position damper opens

NOTE: The two-position damper option may slightly delay activation of the ERV blower motor.

Occupied Mode, with Frost Protection — In the occupied mode, the frost protection option will eliminate frost build-up on the ERV wheel using exhaust air. It is activated via a pressure differential across the ERV wheel. This set point is field set from 0.2 in. wg to 2.0 in. wg and must be set to 150% of the normal static pressure across the wheel. The frost protection feature is automatically locked out above 35 F.

NOTE: If the outdoor-air temperature is below 35 F, a dirty wheel may incorrectly activate the frost control feature if the differential pressure across the wheel exceeds the set point.

When the frost protection option is activated the following will occur:

• ERV wheel turns on.

• Outdoor air blower motor turns off.

• EXH blower motor is on.

Occupied Mode, with the Pre-Heat Option — In the occupied mode, the pre-heat option provides frost protection for the

ERV wheel and slightly warms the outdoor air. This feature is factory set to activate at –5 F, and can be field adjusted from

–30 F to 100 F. It is recommended that this set point be set at the frost threshold for the region in which it is used.

If desired, this feature may also be activated via a field supplied pressure differential switch to determine if frost build up has occurred on the ERV wheel.

Occupied Mode, with the Economizer Accessory — When using the economizer option, this allows for up to 100% outside air to be brought in for free cooling. During free cooling, the rooftop unit mechanical cooling may or may not be operating depending on the set points used with the rooftop unit. When using the economizer accessory, it is recommended that the minimum position be set to the closed position and the

ERV should be set such that it is locked out when the economizer opens far enough to bring in the same level of outdoor air as the ERV.

If desired, this feature may also be activated via a field-supplied pressure differential switch to determine if frost build- up has occurred on the ERV wheel.

During free cooling, the following occurs:

• ERV wheel is turned off.

• Outdoor air blower is turned off.

• EXH blower motor turns on.

• Two-position outdoor-air damper is closed (if used).

• Two-position EXH damper is opened (if used).

• Stop/jog option will periodically rotate the ERV wheel to clean it during wheel bypass operation. This feature is factory set to activate every 10 minutes, for 20 seconds of operation. Both settings can be adjusted from 0 to 10 minutes.

Wheel Bypass Option — When using the wheel bypass option

(with the stop/jog option), this allows free cooling through the wheel limited by the ERV airflow cfm limits. With this option the unit can be in free cooling or not depending on the temperature of the outdoor-air compared to the set point. When not in free cooling, the ERV will not operate. When in free cooling:


• Outdoor-air blower is turned on.

• EXH blower motor is turned on.

• The two-position damper is open (if used).

• The stop/jog option will periodically rotate the ERV wheel to clean it during wheel bypass operation. This feature is factory set to activate every 10 minutes, for

20 seconds of operation. Both settings can be adjusted from 0 to 10 minutes.

UNOCCUPIED MODE — While in unoccupied mode, when below the low temperature lockout set point, the ERV wheel is off, and only the two-position damper option is opened to allow free cooling when desired. The dampers are controlled by either the ERV Timer option (scheduling program) or the

CO

2 sensor input. Additionally, the frost protection and preheat options are also off. The low temperature lockout (LTLO) function locks out the 62M ERV if the outdoor-air temperature entering the wheel is below the set point. The LTLO is factory set at –10 F, and can be field adjusted from –30 F to 100 F.

When above the low temperature lockout set point and cooling is desired the economizer or wheel bypass option is also used. Depending on the option used with the 62M ERV, several sequences of operation could occur.

Unoccupied Mode, with the Economizer Accessory — When using the economizer option, this allows for up to 100% outside air to be brought in for free cooling. During free cooling, no mechanical cooling is operating and the following occurs:


• Outdoor air blower motor is off.

• EXH blower motor is off.

• Two-position OA damper option is closed (if used).

• Two-position EXH damper is open (if used).

• The stop/jog option will periodically rotate the ERV wheel to clean it during wheel bypass operation.

When using the economizer option and mechanical cooling is operating, the economizer should be closed or at the minimum position.

Unoccupied Mode, with the Wheel Bypass Option — When using the wheel bypass option (with the stop/jog option), this allows free cooling through the wheel limited by the ERV cfm limits. With this option the unit can be in free cooling or not depending on the temperature of the OA compared to the set point. When in free cooling:


• Outdoor air blower is on.

• EXH blower motor is on.

• Two-position damper is open (if used).

When not in free cooling:


• Outdoor air blower motor is turned off.

• EXH blower motor is turned off.

• Two-position damper is closed (if used).

SERVICE

To install the segments see the Installing Wheel Segments

(62M075-950) section.

Removing and Installing Non-Segmented Wheel for Cleaning (62M040 Units) —

Non-segmented energy transfer wheels are secured to the shaft and bearing support beam by a Phillips head screw and hub cover. See Fig. 84.

To remove the energy transfer wheel, follow Steps 1-4 below. (See Fig. 84.) Reverse procedure for wheel installation.

1. Remove front seal assembly (pulley side of cassette) if present.

2. Remove belt from pulley and position temporarily around wheel rim.

3. Remove the hub cover from the wheel. Note the wheel to shaft alignment pin under the hub cover. Ensure this pin engages the notch at the end of the shaft when reinstalling the wheel.

4. Pull the wheel straight off the shaft. Handle wheel with care to prevent distorting of the wheel.

Fig. 83 — Unlocking the

Segment Retaining Brackets

Alignment

Pin

Cassette

Housing/Frame

Shaft

Disconnect electrical power before servicing energy recovery cassette.

Removing Wheel Segments for Cleaning

(62M170-950 Units)

1. Unlock and open the segment retaining brackets on both sides of the selected segment opening. Refer to Fig. 83.

2. Gently lift segment outward.

3. Close segment retaining latches and rotate wheel 180 degrees to remove next segment. Follow this pattern to remove all segments. This pattern will help keep wheel balanced.

75

Bearings (2)

Hub Cover Wheel &

Hub

Fig. 84 — 62M040 Energy

Transfer Wheel Assembly


Wheel for Cleaning (62M075, 120 Units) —

Non-segmented energy transfer wheels include the shaft and are secured to two wheel support beams by two flange bearings with locking collars. See Fig. 85.

To remove the energy transfer wheel follow Steps 1-4 below. Reverse procedure for wheel installation.

1. Pull the wheel with shaft straight out of the motor side wheel support beam and bearing. Handle wheel with care to prevent distorting of the wheel.

2. Remove the pulley side wheel support beam with bearing by removing the 4 support beam screws.

3. Remove the belt from the pulley and position temporarily around the wheel rim.

4. Loosen the two set screws on each of the two wheel bearings. See Fig. 85.

When replacing wheel, retighten the 4 bearing set screws.

Premature bearing failure could result.

Installing Wheel Segments (62M170-950

Units)

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

NOTE: Both installation and removal procedures must be performed from the pulley side of the cassette.

Weight of the installed segment will cause the wheel to accelerate in rotation. Failure to maintain control of the wheel rotation while installing all segments could cause severe injury to fingers or hand caught between revolving spokes and the bearing support beam. Handle of hammer, or other stop, should be inserted through spokes and above or below bearing support beams to limit rotation of unbalanced wheel. See Fig. 86.

NOTE: The 62M040-120 units contain non-segmented wheels which must be completely removed to be cleaned.

1. Begin by positioning one segment opening at the top of the cassette. Unlock and open the segment retaining brackets on both sides of the selected segment opening.

2. Holding the segment as vertical as possible and centered between spokes, insert nose of segment downward between the hub plates. See Fig. 87.

NOTE: The face of the segment, with the imbedded stiffener (vertical support between nose and rim end of segment) must face the motor side of the cassette. See

Fig. 88.

3. Ease the segment downward until its outer rim clears the inside of the wheel rim. Then press the segment inward against the spoke flanges.

4. Close and latch segment retaining brackets to the position shown in Fig. 89. Make certain the retaining bracket is fully engaged under the catch.

5. Slowly rotate, by hand, the first installed segment to the bottom of the cassette, then install the second segment opposite the first. Repeat this sequence with the two installed segments rotated to the horizontal position to balance the weight of installed segments. Continue this sequence with the remaining segments.

76

FLANGE

BEARINGS

(2)

WHEEL,

HUB &

SHAFT

WHEEL SUPPORT BEAMS

Fig. 85 — 62M075,120 Energy

Transfer Wheel Assembly

SET

SCREWS

(2) EACH

Fig. 86 — Using a Stop on the Wheel

HAMMER

USED AS

“STOP”

Fig. 87 — Inserting a Segment of the Wheel

Imbedded Stiffeners

Fig. 88 — Motor Side View of Segment

CATCH

PULL TAB

Fig. 89— Latch Segment Retaining Brackets

Wheel Drive Motor and Pulley Replacement

(62M170-095 Units)

1. Disconnect power to wheel drive motor.

2. Remove belt from pulley and position temporarily around wheel rim.

3. Loosen setscrew in wheel drive pulley using Allen wrench and remove pulley from motor drive shaft.

4. While supporting weight of drive motor in one hand, loosen and remove 4 mounting bolts.

5. Install replacement motor with hardware kit supplied.

6. Install pulley to dimension shown in Fig. 90 and secure setscrew to drive shaft.

7. Stretch belt over pulley and engage in groove.

Belt Replacement

1. Obtain access to the pulley side bearing access plate.

Remove two bearing access plate retaining screws and the access plate.

2. Using hexagonal wrench, loosen setscrew in bearing locking collar. Using light hammer and drift (in drift pin hole) tap collar in the direction of wheel rotation to unlock collar. Remove collar.

3. Using socket wrench with extension, remove two nuts which secure bearing housing to the bearing support beam. Slide bearing from shaft.

NOTE: Slight hand pressure against wheel rim will lift weight of wheel from inner race of bearing to assist bearing removal and installation. If not removable by hand, use bearing puller.

Protect hands and belt from possible sharp edges of hole in bearing support beam.

4. Using a wrench, remove diameter seal retaining screws or hub seal retaining screws. Remove diameter seals or hub seal from bearing beam. See Fig. 91.

5. Form a small loop of belt and pass it through the hole in the bearing support beam. Grasp the belt at the wheel hub and pull the entire belt down. Loop the trailing end of the belt over the shaft (Fig. 91 shows belt partially through the opening).

6. Reinstall the bearing onto the wheel shaft, being careful to engage the two locating pins into the holes in the bearing support beam. Secure the bearing with two self-locking nuts.

7. Install the belts around the wheel and pulley according to the instructions provided with the belt.

8. Reinstall diameter seals or hub seal and tighten retaining screws. Rotate wheel in clockwise direction to determine that wheel rotates freely with slight drag on seals.

9. Reinstall bearing locking collar. Rotate collar by hand in the direction the wheel rotates (see label provided on each cassette for wheel rotation). Lock in position by tapping drift pin hole with hammer and drift. Secure in position by tightening setscrew.

10. Reinstall bearing access cover.

11. Apply power to wheel and ensure that the wheel rotates freely without interference.

ALTERNATE BELT REPLACEMENT METHODS — Alternate belt replacement methods may be used in some applications depending upon accessibility of the cassette. Consult instructions provided with the belt for further information.

Insulation

62M

UNIT SIZE

170

225

285

330

430

550

640

750

950

ERV

WHEEL

ERC-3623

ERC-3623

ERC-3628

ERC-5245

ERC-5245

ERC-5262

ERC-5262

ERC-6488

ERC-6488

WHEEL

SERIES

36

36

36

52

52

52

52

64

64

DIMENSION A

(in.)

7

1

/

/

4

16

Pulley

NOTE: The ERV wheel model number contains the wheel series number, and is located on a label near the drive pulley. For example, ERC-5245D is a 52 series wheel.

Fig. 90 — Pulley Location

77

Seal

Plate

Dimension A

Wheel

Drive

Motor

Bearing

Access Plate

Locking

Collar

Locking

Nut (2)

Bearing

Housing

Bearing

Support

Beam

Belt (Shown in

Place)

Wheel Rim

Wheel

Hub (2)

Taper - Lock

Hub Collar (2)

Retaining

Screws

Set Screw

Drift Hole

Locating Pin

Shaft

PULL

FEED

Belt

Pulley

Side

Motor

Side

Fig. 91 — Belt Replacement (Diameter Seals Removed)

MAINTENANCE

Routine maintenance of the energy recovery cassettes includes periodic cleaning of the energy recovery wheel as well as inspection of the air seals and wheel drive components as follows:

Cleaning —

The need for periodic cleaning of the energy recovery wheel will be a function of operating schedule, climate and contaminants in the indoor air being exhausted, and the outdoor air being supplied to the building.

The air exchange wheel is “self-cleaning” with respect to dry particles due to its laminar flow characteristics. Smaller particles pass through; larger particles land on the surface and are blown clear as the flow direction is reversed. Any material that builds up on the face of the wheel can be removed with a brush or vacuum. The primary need for cleaning is to remove oil-based aerosols that have condensed on energy transfer surfaces.

A characteristic of all dry desiccants, such films can close off micron sized pores at the surface of the desiccant material, reducing the efficiency by which the desiccant can adsorb and desorb moisture and also build up so as to reduce airflow.

In a reasonably clean indoor environment such as a school or office building, measurable reductions of airflow or loss of sensible effectiveness may not occur for several years. Measurable changes in latent energy transfer can occur in shorter periods of time in applications such as moderate occupant smoking or cooking facilities. In applications experiencing unusually high levels of occupant smoking or oil-based aerosols such as industrial applications involving the ventilation of machine shop areas for example, annual washing of energy transfer may be necessary to maintain latent transfer efficiency.

Proper cleaning of the energy recovery wheel will restore latent effectiveness to near original performance.

To clean, gain access to the energy recovery wheel and remove wheel. Brush foreign material from the face of the wheel. Wash the wheel in a 5% solution of non-acid based coil cleaner or alkaline detergent and warm water.

Soak in the solution until grease and tar deposits are loosened.

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

Before removing, rapidly run finger across surface of wheel to separate polymer strips for better cleaning action. Rinse dirty solution from wheel and remove excess water before reinstalling.

Do not use acid based cleaners, aromatic solvents, steam or temperatures in excess of 170 F; damage to the wheel may result.

Air Seals —

Diameter seals are provided on each cassette to minimize transfer of air between the counter flowing airstreams.

To adjust diameter seals, loosen diameter seal adjusting screws and back seals away from wheel surface (Fig. 92).

Rotate wheel clockwise until two opposing spokes are hidden behind the bearing support beam. Using a folded piece of paper as a feeler gage, position paper between the wheel surface and diameter seals. Adjust seals towards wheel surface until a slight friction on the feeler gage (paper) is detected when gage is moved along the length of the spoke. Retighten adjusting screws and recheck clearance with “feeler” gage.

78

Rotation

To

Adjust

Adjusting Screws

Feeler Gage

Fig. 92 — Diameter Seal Adjustment

Wheel Drive Components —

The wheel drive motor bearings are pre-lubricated and no further lubrication is necessary. Make certain air cooling ports are not blocked.

The wheel drive a pulley is secured to the drive motor shaft by a setscrew. The setscrew is secured with removable adhesive to prevent loosening. Annually confirm setscrew is secure.

The wheel drive belt is a urethane stretch belt designed to provide constant tension through the life of the belt. No adjustment is required. Inspect the drive belt annually for proper tracking and tension. A properly tensioned belt will turn the wheel immediately after power is applied with no visible slippage during start-up.

79

Copyright 2006 Carrier Corporation

Book 1


4 Catalog No. 536-220 Printed in U.S.A.

Form 62M-1SI Pg 80 1-06 Replaces: New

Tab 10a 12a

START-UP CHECKLIST

Start-Up Performed By ____________________________ A. Project Information:

Name __________________________________________________

Job Name ______________________________________________

ERV Unit Designation ____________________________________

Phone Number __________________________________________

Design Information

Application

CFM

External Static Pressure

Supply Discharge

Return Discharge

Voltage/Phase

ERV Unit Part Number

Specify Rooftop Unit.

Model Number

HVAC Unit Discharge Type

Roof Curb (Option)

14-in. Tall Roof Curb

Vibration Isolation Curb

Transition (Option)

Rooftop Unit Discharge

Percent Outside Air

Transition Part Number

Inside Mounting Kit (Option)

Yes

Yes

No

No

Field install

Field install

Field install

Factory installed

Electrical Disconnect (Option)

Fused

Switched

Two-Position Motorized Dampers (Option)

Outside Air Damper

Exhaust Air Damper

Economizer (Accessory for Rooftop Unit)

Yes

Yes

Yes

No

No

No

Factory installed

Factory installed

Factory installed

Factory installed

Field install

Wheel Bypass With Stop Jog Control (Option) Yes No

Factory installed

Stop Jog Control (Option) Yes No

Factory installed

Pre-Heater (Option) kW

Temp Control

Temp and Static Pressure Control

Frost Protection (Option)

Yes

Yes

No

No

Factory installed

Factory installed

Low Temperature Lock Out (Option) Yes No

Factory installed

Filter Maintenance Indicator (Option) Yes No

Factory installed

ERV Blower Maintenance Indicator (Option) Yes No

Factory installed

ERV Wheel Maintenance Indicator (Option) Yes No

Factory installed

Airflow Monitor (Option) Yes No

Factory installed

ERV Control Timer (Option)

24 Volt Mounted in ERV

115 Volt Remote Mount

VAV Control (Option)

Yes

Yes

No

No

Factory installed

Field install

Factory installed

CO

2

Sensor (Option)

Wall Mount or Duct Mount

Duct Mount With External View

For 62M040 Cabinet Only

Equipment Support

Base Rail Option

Hinged Door Option

2-in. Filters Option

Door Interlock Safety Switches

Test Port Option

Yes

Yes

No

No

Field install

Field install

Field installed

Factory installed

Factory installed

Factory installed

Factory installed

Factory installed

Coupled to rooftop unit or stand-alone.

Down or horizontal (use horizontal for mated application)

Down or horizontal (use horizontal for mated application)

NOTE: Complete This Section for Coupled Applications Only

Down discharge or horizontal discharge.

NOTE: Complete This Section for Coupled Applications Only.

Down or horizontal discharge rooftop unit.

Outside air thru ERV unit as a percent of total rooftop unit cfm.

NOTE: Complete This Section for Indoor Applications Only.

Removes rainhoods and adds duct flanges.

NOTE: Do Not Use With Wheel Bypass Option.

Special economizers required for some rooftop units. See the price pages.

NOTE: Do Not Use With Economizer Option.

Stops the ERV wheel rotation for free-cooling.

NOTE: Use With Economizer Option.

Jogs the wheel during economizer mode to expel contaminants.

NOTE: Do Not Use With Pre-Heater.

Defrosts wheel with exhaust air, by shutting down OA blower.

Shut down ERV unit at low temperature set point.

Senses static pressure across OA filters (can be set for return filters).

Monitors OA and EA blowers and sends signal on electrical spike.

Monitors ERV wheel and sends signal on electrical spike.

Gages display static pressure across wheel for OA and exhaust air.

24 hour / 7 day timer mounted in ERV unit.

24 hour / 7 day timer field mounted in remote location.

Provides independent VFD control for both OA and exhaust air.

Use for coupled applications.

Must be ordered when 62M040 sits on a roof curb.

Provides hinges and latches on both access doors.

Replaces the standard 1-in. filters with 2-in. high efficiency, pleated.

Cuts power to ERV unit when access doors are opened during operation.

Allows for convenient monitoring of static / airflow across ERV wheel.


Book 1 4 Catalog No. 536-220 Printed in U.S.A.

Form 62M-1SI Pg CL-1 1-06 Replaces: New

Tab 1a 12a

Carrier 62MD User manual

62MB,MC,MD,ME040-950

Energy Recovery

Ventilators

Installation, Start-Up and

Service Instructions

CONTENTS

SAFETY CONSIDERATIONS

INTRODUCTION

INSTALLATION

Step 1 — Inspection —

Step 2 — Install Roof Curb

Top View

Horizontal Discharge -

Stand-Alone Unit

Top View

Down Discharge -

Stand-Alone Unit

Side View

Down Discharge -

Stand-Alone Unit

Step 3 — Rigging and Handling —

Step 4 — Installing ERV Transitions —

Step 5 — Make Electrical Connections

START-UP

Unit Preparation —

Internal Wiring —

Rain Hoods —

Energy Recovery Wheel

Blower Rotation —

Airflow Settings and Adjustments —

External Static (in. wg)

Variable Air Volume Option —

Operating Sequence

SERVICE

Removing and Installing Non-Segmented Wheel for Cleaning (62M040 Units) —

Removing Wheel Segments for Cleaning

(62M170-950 Units)

Removing and Installing Non-Segmented

Wheel for Cleaning (62M075, 120 Units) —

Installing Wheel Segments (62M170-950

Units)

Wheel Drive Motor and Pulley Replacement

(62M170-095 Units)

Belt Replacement

MAINTENANCE

Cleaning —

Air Seals —

Wheel Drive Components —

START-UP CHECKLIST

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