Carrier 62E User Manual

Energy Recovery Ventilators

Installation, Start-Up and

Service Instructions

62E

50 Hz

CONTENTS

Page

SAFETY CONSIDERATIONS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

Step 1 — Inspect the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . 6

Step 2 — Install Combination Roof Curb (62EB-EU Units) Step 3 — Install Drop in Damper Box

(62EB-EU Units) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Step 4 — Install Horizontal Base and Transition (62EB-EU and 62E2-E7 Units)

Step 5 — Install Standard Roof Curb . . . . . . . . . . . . . . 14

• VERTICAL STAND-ALONE APPLICATIONS

• HORIZONTAL STAND-ALONE APPLICATIONS

Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . 16

Step 7 — Make Electrical Connections . . . . . . . . . . 17

• POWER SUPPLY

• ELECTRICAL CONNECTIONS

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-32

Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Rain Hoods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Energy Recovery Wheel. . . . . . . . . . . . . . . . . . . . . . . . . 22

• DRIVE BELT

•AIR SEALS

Airflow Settings and Adjustments. . . . . . . . . . . . . . . 22

• UNITS WITH EZERV CONROL OPTION

Operating Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

ComfortLink™ Interface Device . . . . . . . . . . . . . . . . . 27

Optional BACnet or LON Communications

Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-36

Removing and Installing Non-Segmented

Wheel for Cleaning (62EB,E7 Units) . . . . . . . . . . . 32

Removing and Installing Non-Segmented Wheel

for Cleaning (62ECC and 62E2C Units). . . . . . . . 33

Removing Wheel Segments for Cleaning (62ECD,

62ED-EU, 62E2D, and 62E3-E6 Units) . . . . . . . . . 33

Installing Wheel Segments. . . . . . . . . . . . . . . . . . . . . . . 33

Wheel Drive Motor and Pulley Replacement

(62EC-EU and 62E2-E6 Units) . . . . . . . . . . . . . . . . . 34

Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

• ALTERNATE BELT REPLACEMENT METHODS

Removing the Service Door . . . . . . . . . . . . . . . . . . . . . 35

Replacing a Blower (All ERV Cabinets Except

62EB and 62E7 Units) . . . . . . . . . . . . . . . . . . . . . . . . . 35

• EXHAUST SIDE

• SUPPLY SIDE

Replacing a Blower (62EB and 62E7

Size Cabinets). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

• EXHAUST OR SUPPLY SIDE

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36,37

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Air Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

. . . . . . . . . . . . . . . . . . . . . . . 1

. . . . . . . . . . . . . . . . . . . . 7

Wheel Drive Components . . . . . . . . . . . . . . . . . . . . . . . 37

Page

Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Replacing the Throwaway Filters . . . . . . . . . . . . . . . . 37

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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 62E energy recovery ventilator (ERV) units.

WARNING

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.

GENERAL

The 62E ERV units recover energy from building exhaust air and pre-condition ventilation air. See Tables 1A-2B for unit data. All 62EB-62EU units are configured for vertical discharge (through the bottom). Vertical units may be installed on:

• a stand-alone roof curb

• a combination curb for direct coupled connection to a

rooftop unit

If horizontal supply and return is desired using a vertical unit, the vertical unit may be installed on a horizontal supply/ return base.

NOTE: The horizontal supply/return base accessory includes a roof curb. The horizontal supply/return base should NOT be used with a stand-alone roof curb.

All 62E2-62E7 units are configured for horizontal discharge (through the side). Horizontal units may be installed on a stand-alone roof curb.

DIRECT COUPLED APPLICATIONS (Vertical) — The ERV unit can be installed directly coupled to a RTU (rooftop unit). For vertical (through the roof) applications, the connection between the 62EB-62EU ERV unit and the RTU may be

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

Catalog No. 04-53620007-01 Printed in U.S.A. Form 62E-C1SI Pg 1 8-10 Replaces: New

made with the use of a combination roof curb or by using the drop in damper box accessory. The combination roof curb is a single curb that supports both the ERV and the RTU and as

internal supply and exhaust air transitions. The drop in damper box provides a means to make the supply and exhaust air transitions below the roof.

Table 1A — Physical Data — SI

UNIT 62E BA/7A BC/7C CC/2C CD/2D CG/2G DD/3D DG/3G NOMINAL CAPACITY (L/s) 165 235 470 425 520 615 755 CAPACITY RANGE (L/s) 94-378 94-378 236-543 189-519 236-661 283-755 378-944 MAXIMUM SHIPPING WEIGHT (kg) 150 152 221 228 228 284 284 MAXIMUM OPERATING WEIGHT (kg) 127 130 199 205 205 262 262 UNIT DIMENSIONS (mm)

Length (includes hoods) 1123/1242 1570/1461 1717/1455 Width 790/925 980/1115 1128/1262 Height 879/793 1069/983 1064/1130

ROTARY ENERGY EXCHANGER

Typ e Monolithic Segmented Size (Diam x Depth) (mm) 483 x 25 483 x 51 635 x 51 635 x 76 762 x 76 Nominal Drive Motor kW 0.07 0.07 0.07 0.07 0.07

SUPPLY/EXHAUST FANS

Typ e Centrifugal DWDI Backward Inclined, Single Width Single Inlet Drive Type Direct EC Motor with Integral Frequency Drive Fan Option Code

(see fan option table)

FILTERS

Typ e 51 mm Pleated Exhaust Air – Qty...Size (L x W x D) (mm) 1...305 x 610 x 51 1...356 x 635 x 51 2…406 x 635 x 51 Outside Air – Qty...Size (L x W x D) (mm) 1...305 x 610 x 51 1...356 x 635 x 51 2…406 x 635 x 51

AA, B C C

UNIT 62E EB/4B ED/4D EF/4F EG/4G HB/5B HD/5D HF/5F HG/5G KD/6D KG/6G NOMINAL CAPACITY (L/s) 660 1040 1040 1225 1415 2170 2170 2595 2125 3680

CAPACITY RANGE (L/s) 378-850 519-1227 614-1274 614-1652 661-1700

MAXIMUM SHIPPING WEIGHT (kg)

MAXIMUM OPERATING WEIGHT (kg)

UNIT DIMENSIONS (mm)

Length (includes hoods) 2172/1798 2639/2035 2908/2187 Width 1387/1521 1702/1836 1971/2106 Height 1283/1389 1420/1704 1572/1974

ROTARY ENERGY EXCHANGER

Typ e Segmented

Size (Diam x Depth) (mm) 914 x 38 914 x 76 914 x 38 914 x 76

Nominal Drive Motor kW 0.1 0.1 0.1 0.1 0.1 0.1 0.2

SUPPLY/EXHAUST FANS

Typ e Backward Inclined, Single Width Single Inlet Drive Type EC Motor with Integral Frequency Drive Fan Option Code

(see fan option table)

FILTERS

Typ e 51 mm Pleated Exhaust Air – Qty...Size

(L x W x D) (mm) Outside Air – Qty...Size

(L x W x D) (mm)

508 525 508 525 789 803 789 803 1157 1157

485 503 485 503 766 781 766 781 1043 1043

1321 x 381321 x 761321 x 381321 x

C, E E, F E, F, L E, F, L, M F, L, M

2…508 x 635 x 51 3…508 x 635 x 51 6…406 x 610 x 51

1038-

2643

1038-

2550

1415-

3492

1180-

2595

1626 x 76

1888-

4955

LEGEND

DWDI — Double Width, Double Inlet EC — Electronically Commutated

Table 1A — Physical Data — SI (cont)

UNIT 62E LD LG MD MG ND NG PD PG NOMINAL CAPACITY (L/s) 3585 4340 2830 5100 5200 6500 5950 7080 CAPACITY RANGE (L/s) 1650-4250 2360-5665 1415-3540 2595-6845 2595-6370 330-8260 2830-7315 3540-9440 MAXIMUM SHIPPING

WEIGHT (kg) MAXIMUM OPERATING

WEIGHT (kg) UNIT DIMENSIONS (mm)

Length (includes hoods) 2355 2532 2685 2812 Width 2162 2339 2492 2619 Height 1687 1712 1737 1824

ROTARY ENERGY EXCHANGER

Typ e Segmented Size (Diam x Depth) (mm) 1727 x 76 1880 x 76 2057 x 76 2184 x 76 Nominal Drive Motor kW 0.2 0.2 0.2 0.2

SUPPLY/EXHAUST FANS

Typ e Backward Inclined, Single Width Single Inlet Drive Type EC Motor with Integral Frequency Drive Fan Option Code

(see fan option table)

FILTERS

Typ e 51 mm Pleated Exhaust Air – Qty...Size

(L x W x D) (mm) Outside Air – Qty...Size

(L x W x D) (mm)

1232 1308 1397 1397 1482 1482 1533 1608

1118 1194 1283 1283 1368 1368 1420 1495

F, G, L, M F, G, M F, G, M F, G, M G, M F, G, M G, M

6…406 x 635 x 51 6…457 x 635 x 51 6…508 x 508 x 51 8…508 x 610 x 51

UNIT 62E RD RG SD SG TD TG UD UG NOMINAL CAPACITY (L/s) 6500 8000 7800 9400 8500 10250 9700 11800 CAPACITY RANGE (L/s) 3300-8025 4250-11325 3775-9450 5190-13685 4250-10380 5665-14630 4720-11800 6600-16990 MAXIMUM SHIPPING

WEIGHT (kg) MAXIMUM OPERATING

WEIGHT (kg) UNIT DIMENSIONS (mm)

Length (includes hoods) 3015 3117 3294 3447 Width 2822 2924 3101 3251 Height 1824 1925 2068 2118

ROTARY ENERGY EXCHANGER

Typ e Segmented Size (Diam x Depth) (mm) 2337 x 76 2515 x 76 2642 x 76 2794 x 76 Nominal Drive Motor kW 0.2 0.2 0.2 0.2

SUPPLY/EXHAUST FANS

Typ e Backward Inclined, Single Width Single Inlet Drive Type EC Motor with Integral Frequency Drive Fan Option Code

(see fan option table)

FILTERS

Typ e 51 mm Pleated Exhaust Air – Qty...Size

(L x W x D) (mm) Outside Air – Qty...Size

(L x W x D) (mm)

LEGEND

DWDI — Double Width, Double Inlet EC — Electronically Commutated

1974 1974 2126 2126 2486 2486 2486 2486

1860 1860 2013 2013 2373 2373 2373 2373

G, H, J, M,

10…508 x 508 x 51 8…610 x 610 x 51 8…635 x 635 x 51 8…635 x 635 x 51

G, H, J, N H, J, K, N

H, K, J,

N, P, R

K, J, N, P, R H, K, J, N, P, R

Table 1B — Physical Data — English

UNIT 62E BA/7A BC/7C CC/2C CD/2D CG/2G DD/3D DG/3G NOMINAL CAPACITY (cfm) 350 500 1000 900 1100 1300 1600 CAPACITY RANGE (cfm) 200-800 200-900 500-1150 400-1100 500-1400 600-1600 800-2000 MAXIMUM SHIPPING WEIGHT (lb) 331 336 488 502 502 627 627 MAXIMUM OPERATING WEIGHT (lb) 281 286 438 452 452 577 577 UNIT DIMENSIONS (in.)

Length (includes hoods) 44.2/48.9 61.8/57.5 67.6/57.3 Width 31.1/36.4 38.6/43.9 44.4/49.7 Height 34.6/31.2 42.1/38.7 41.9/44.5

ROTARY ENERGY EXCHANGER

Typ e Monolithic Segmented Size (Diam x Depth) (in.) 19 x 1.0 19 x 2.0 25 x 2.0 25 x 3.0 30 x 3.0 Nominal Drive Motor Hp 0.09 0.09 0.09 0.09 0.09

SUPPLY/EXHAUST FANS

Typ e Centrifugal DWDI Backward Inclined, Single Width Single Inlet Drive Type Direct EC Motor with Integral Frequency Drive Fan Option Code

(see fan option table)

FILTERS

Typ e 2 in. Pleated Exhaust Air – Qty...Size (L x W x D) (in.) 1...12 x 24 x 2 1…14 x 25 x 2 2…16 x 25 x 2 Outside Air – Qty...Size (L x W x D) (in.) 1...12 x 24 x 2 1…14 x 25 x 2 2…16 x 25 x 2

UNIT 62E EB/4B ED/4D EF/4F EG/4G HB/5B HD/5D HF/5F HG/5G KD/6D KG/6G NOMINAL CAPACITY (cfm) 1,400 2,200 2,200 2,600 3,000 4,600 4,600 5,500 4,500 7,800

CAPACITY RANGE (cfm)

MAXIMUM SHIPPING WEIGHT (lb)

MAXIMUM OPERATING WEIGHT (lb)

UNIT DIMENSIONS (in.)

Length (includes hoods) 85.5/70.8 103.9/80.1 114.5/86.1 Width 54.6/59.9 67.0/72.3 77.6/82.9 Height 50.5/54.7 55.9/67.1 61.9/77.7

ROTARY ENERGY EXCHANGER

Typ e Segmented Size (Diam x Depth) (in.) 36 x 1.5 36 x 3.0 36 x 1.5 36 x 3.0 52 x 1.5 52 x 3.0 52 x 1.5 52 x 3.0 64 x 3.0 Nominal Drive Motor Hp 1/6 1/6 1/6 1/6 1/6 1/6 1/4

SUPPLY/EXHAUST FANS

Typ e Backward Inclined, Single Width Single Inlet Drive Type EC Motor with Integral Frequency Drive Fan Option Code

(see fan option table)

FILTERS

Typ e 2 in. Pleated Exhaust Air – Qty...Size

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

(L x W x D) (in.)

LEGEND

DWDI — Double Width, Double Inlet EC — Electronically Commutated

800-

1,800

1,120 1,158 1,120 1,158 1,739 1,771 1,739 1,771 2,550 2,550

1,070 1,108 1,070 1,108 1,689 1,721 1,689 1,721 2,300 2,300

1,100-

2,600

AA, B C C

1,300-

2,700

C, E E, F E, F, L E, F, L, M F, L, M

2…20 x 25 x 2 3…20 x 25 x 2 6…16 x 24 x 2

1,300-

3,500

1,400-

3,600

2,200-

5,600

2,200-

5,400

3,000-

7,400

2,500-

5,500

4,000-

10,500

Table 1B — Physical Data — English (cont)

UNIT 62E LD LG MD MG ND NG PD PG NOMINAL CAPACITY (cfm) 7,600 9,200 6,000 10,800 11,000 13,800 12,600 15,000

CAPACITY RANGE (cfm) 3,500-9,000

MAXIMUM SHIPPING WEIGHT (lb)

MAXIMUM OPERATING WEIGHT (lb)

UNIT DIMENSIONS (in.)

Length (includes hoods) 92.7 99.7 105.7 110.7 Width 85.1 92.1 98.1 103.1 Height 66.4 67.4 68.4 71.8

ROTARY ENERGY EXCHANGER

Typ e Segmented Size (Diam x Depth) (in.) 68 x 3.0 74 x 3.0 81 x 3.0 86 x 3.0 Nominal Drive Motor Hp 1/4 1/4 1/4 1/4

SUPPLY/EXHAUST FANS

Typ e Backward Inclined, Single Width Single Inlet Drive Type EC Motor with Integral Frequency Drive Fan Option Code

(see fan option table)

FILTERS

Typ e 2 in. Pleated Exhaust Air – Qty...Size

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

(L x W x D) (in.)

2,715 2,883 3,079 3,079 3,267 3,267 3,381 3,545

2,465 2,633 2,829 2,829 3,017 3,017 3,131 3,295

F, G, L, M F, G, M F, G, M F, G, M G, M F, G, M G, M

6…16 x 25 x 2 6…18 x 25 x 2 8…20 x 20 x 2 8…20 x 24 x 2

5000-

12,000

3000-7500

5500-

14,500

5500-

13,500

7000-

17,500

6000-

15,500

7500-

20,000

UNIT 62E RD RG SD SG TD TG UD UG NOMINAL CAPACITY (cfm) 13,800 17,000 16,500 20,000 18,000 21,700 20,500 25,000

CAPACITY RANGE (cfm)

MAXIMUM SHIPPING WEIGHT (lb)

MAXIMUM OPERATING WEIGHT (lb)

UNIT DIMENSIONS (in.)

Length (includes hoods) 118.7 122.7 129.7 135.7 Width 111.1 115.1 122.1 128.0 Height 71.8 75.8 81.4 83.4

ROTARY ENERGY EXCHANGER

Typ e Segmented Size (Diam x Depth) (in.) 92 x 3.0 99 x 3.0 104 x 3.0 110 x 3.0 Nominal Drive Motor Hp 1/3 1/3 1/3 1/3

SUPPLY/EXHAUST FANS

Typ e Backward Inclined, Single Width Single Inlet Drive Type EC Motor with Integral Frequency Drive Fan Option Code

(see fan option table)

FILTERS

Typ e 2 in. Pleated Exhaust Air – Qty...Size

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

(L x W x D) (in.)

LEGEND

DWDI — Double Width, Double Inlet EC — Electronically Commutated

7,00017,000

4351 4351 4688 4688 5481 5481 5481 5481

4101 4101 4438 4438 5231 5231 5231 5231

G, H, J, M,

10…20 x 20 x 2 8…24 x 24 x 2 8…25 x 25 x 2 8…25 x 25 x 2

9,000-

24,000

G, H, J, N H, J, K, N

8,000-

20,000

11,000-

29,000

9,000-

22,000

H, K, J,

N, P, R

12,000-

31,000

K, J, N, P, R H, K, J, N, P, R

10,000-

25,000

14,000-

36,000

Table 2A — Supply/Exhaust Fan Options Physical Data — SI

FAN OPTION CODE A B C E F G H Wheels

Qty...Width (mm)

Nominal Motor kW

(per each fan)

1…128 x 110 2…128 x 110 1…400 1…500 2…500 3…500 4…500

0.45 0.45 0.88 2.70 2.70 2.70 2.70

FAN OPTION CODE

Wheels

Qty...Width (mm)

Nominal Motor kW

(per each fan)

JKLMNPRS

5…500 6…500 1…630 2…630 3…630 7…500 8…500 1…250

2.70 2.70 2.90 2.90 2.90 2.70 2.70 2.70

Table 2B — Supply/Exhaust Fan Options Physical Data — English

FAN OPTION CODE A B C E F G H Wheels

Qty...Width (in.)

Nominal Motor Hp

(per each fan)

FAN OPTION CODE

Wheels

Qty...Width (in.)

Nominal Motor Hp

(per each fan)

DIRECT COUPLED APPLICATIONS (Horizontal) — For horizontal applications (above the roof) using 62EB-EU units, the horizontal supply/return base and transition accessories may be used.

For horizontal applications using 62E2-E7 units, a standard

roof curb and transition accessories may be used.

1…5 x 4 1/8 2…5 x 4 1/8 1…15 3/4 1…19 3/4 2…19 3/4 3…19 3/4 4…19 3/4

0.61 0.61 1.18 3.62 3.62 3.62 3.62

JKLMNPRR

5…19 3/4 6…19 3/4 1…24 3/4 2…24 3/4 3…24 3/4 7…19 3/4 8…19 3/4 1…9 7/8

3.62 3.62 3.89 3.89 3.89 3.62 3.62 3.62

INSTALL DUCTWORK — Ductwork will be installed in the curb for combination curb applications. The supply duct will hang from the top of the curb. The return duct will attach to a stub duct provided with the combination roof curb.

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

INSTALL GASKETS — The combination curbs come with a

INSTALLATION

Step 1 — Inspect the Unit —

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.

Inspect the unit; file a

Step 2 — Install Combination Roof Curb (62EB-EU Units) —

tion roof curb is a single curb that supports both the ERV and RTU and has internal supply and exhaust air transitions. See Fig. 1.

NOTE: For horizontal applications with 62E2-E7 units, a standard roof curb and horizontal transition can be used.

LOCATE THE COMBINATION CURB — Prior to locating the combination 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 Fig. 2 and 3 for ERV clearance requirements. Refer to the rooftop installation instructions for more information regarding location considerations.

PREPARE ROOF CURB LOCATION — Cut a hole in the roof for duct openings. Your local Carrier sales representative can provide dimensional drawing for the combination curb. See this drawing for duct opening dimensions. Frame the opening to provide adequate structural support.

SET THE COMBINATION CURB — Set the combination 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.

For 62EB-EU units, the combina-

gasketing package to provide a seal between the RTU and ERV units and the top perimeter of the combination curb. Install the gasket around the top perimeter of the curb and around the supply and return opening. Gasket strips must fit tightly together, leaving no gaps for leakage.

INSTALL ROOFING MATERIALS — Insulate and add a cant strip to the combination 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. 4 for roofing recommendations.

Step 3 — Install Drop-In Damper Box (62EBEU Units) —

signed to fit into the return air openings of the standard factory curb of Carrier RTUs. The damper box provides connections for return air from the conditioned space, exhaust air to the ERV, and ventilation air from the ERV. The ERV would be installed on a stand-alone roof curb and field-supplied ductwork would be run between the damper box and ERV curb. See Fig. 5. The maximum length of the field-supplied duct is 100 equivalent feet.

LOCATE THE ERV ROOF CURB — Prior to locating the ERV roof curb consider the structural support required for the rooftop system, the duct drop location in relation to the joists, and the 100 equivalent foot duct length limitation between the ERV and RTU. Allow sufficient space for service, clearance, and locations of vents or other sources of air. Refer to Fig. 2 and 3 for ERV clearance requirements. Refer to the rooftop installation instructions for more information regarding location and installation considerations for the RTU curb.

The drop-in damper box accessories are de-

ASSEMBLE THE ERV ROOF CURB — Connect the curb

Fig. 1 — Typical Combination Curb

LEGEND

NOTES:

1. Return air ductwork sits 12 in. below bottom of curb. (Stub duct provided.)

2. Dimensions shown in inches.

ERV — Energy Recovery Ventilator RTU — Rooftop Unit

side and the curb end. Insert the tabs on the curb end into the slots on the curb sides. See Fig. 6. Press firmly until the pieces lock into place. It may be necessary to exert additional force on top of the curb to lock the pieces in place. Ensure the curb pieces are locked together prior to proceeding further. Repeat for other corners of the roof curb.

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

PREPARE ROOF CURB LOCATION — Cut a hole in the roof for duct openings. See Fig. 7 for duct opening dimensions. Frame the opening to provide adequate structural support.

SET THE ERV 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.

INSTALL DUCTWORK — Ductwork will be installed in the ERV roof curb for applications utilizing the drop-in damper box. The duct will hang from the top of the curb. Refer to Fig. 7 to determine the duct size required. Provide fieldmanufactured duct and place into the supply and return openings in the curb.

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

NOTE: Drop-in damper box must be installed in the RTU curb before the RTU is set in place.

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. 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. 4 for roofing recommendations.

INSTALL DROP-IN DAMPER BOX — Place the damper box into the RTU curb. Allow the damper box flanges to rest on the curb. Secure the damper box in place with 1-in. self-tapping screws. Install ductwork to connect the damper box to the ERV curb. The upper damper box connection must be ducted to the ERV supply air, and the lower damper box connection must be ducted to the ERV exhaust air. See Fig 5. Refer to the drop-in damper box dimensional sheets to determine the duct size required. Your local Carrier sales representative can provide you with this dimensional data.

Step 4 — Install Horizontal Base and Transition (62EB-EU and 62E2-E7 Units) —

zontal transition accessory is used to connect the ERV to the horizontal return of a Carrier rooftop unit. To provide horizontal exhaust and ventilation air connections on 62EB-EU units, the horizontal base accessory must also be installed. The accessory is not needed on 62E2-E7 units. The rooftop unit must be installed on a standard 14 in. high roof curb and positioned at a specific distance relative to the ERV base. A typical arrangement is shown in Fig. 8 and 9. See Fig. 10 for 62E2-E7 unit dimensions. Your local Carrier sales representative can provide you with dimensional data for the appropriate Carrier RTU and 62E model installation.

LOCATE THE ROOF CURB — Prior to locating the roof curb consider the structural support required for the rooftop system. Allow sufficient space for service, clearance, and locations of vent or other sources of air. Refer to Fig. 2, 3, and 10 for ERV clearance requirements. Refer to the rooftop installation instructions for more information regarding location considerations.

Proper location of the roof curb in relationship to the RTU roof curb is critical for proper fit of the horizontal transition. See Fig. 8 and 9. Refer to the ERV unit submittals provided by your local Carrier sales representative for the correct dimensions.

The hori-

LEFT SIDE

TOP VIEW

Fork Pockets (Remove Before Installing on Curb)

62E UNIT

TYPE

DIMENSIONS (in.)

ABCDEFGH I J

B 31.138 36.000 36.000 37.645 34.559 5.850 5.757 35.076 24.971 11.801

C 38.625 18.000 36.000 45.183 42.078 8.916 14.239 43.875 32.471 15.485

D 44.425 18.000 45.000 45.043 41.938 8.916 14.239 49.675 38.271 18.260

E 54.625 20.000 55.000 53.562 50.458 11.677 19.165 59.875 48.495 22.997

H 67.045 20.000 65.000 59.022 55.918 11.677 25.164 72.294 60.915 29.207

K 77.625 27.000 75.000 64.972 61.868 11.677 25.164 82.875 71.495 34.247

a62-330

Fig. 2 — 62EB-62EK Vertical Unit Cabinet Dimensions

NOTES:

1. Clearance above cabinet is 24 inches (610 mm).

2. All dimensions shown in inches.

62E UNIT

TYPE

DIMENSIONS (mm)

ABCDEFGH I J

B 791 914 914 956 878 149 146 891 634 300

C 981 457 914 1148 1069 226 362 1114 825 393

D 1128 457 1143 1144 1065 226 362 1262 972 464

E 1387 508 1397 1360 1282 297 487 1521 1232 584

H 1703 508 1651 1499 1420 297 639 1836 1547 742

K 1972 686 1905 1650 1571 297 639 2105 1816 870

LEFT SIDE

TOP VIEW

Fork Pockets (Remove Before Installing on Curb)

62E UNIT

TYPE

DIMENSIONS (in.)

ABCH I JKLMN

L 82.750 30.000 85.000 85.536 76.471 36.985 69.500 66.396 85.076 92.747 M 89.750 30.000 95.000 92.536 83.471 40.485 70.500 67.396 92.076 99.747 N 95.750 30.000 97.000 98.536 89.471 43.485 71.500 68.396 98.076 105.747 P 100.750 32.000 105.000 103.536 94.471 45.985 74.910 71.806 103.076 110.747 R 108.750 32.000 115.000 111.536 102.471 49.985 74.910 71.806 111.076 118.747 S 112.750 32.000 115.000 115.536 106.471 51.985 78.910 75.806 115.076 122.747

T 119.750 32.000 122.000 122.536 113.471 55.485 84.490 81.386 122.076 129.747 U 125.625 32.000 125.000 130.875 119.495 58.497 86.510 83.405 127.971 135.727

a62-331

Fig. 3 — 62EL-62EU Unit Cabinet Dimensions

NOTES:

1. Clearance above cabinet is 36 inches (915 mm).

2. All dimensions shown in inches.

62E UNIT

TYPE

DIMENSIONS (mm)

ABCH I JKLMN

L 2102 762 2159 2173 1942 937 1765 1686 2161 2356 M 2280 762 2413 2350 2120 1028 1791 1712 2339 2534

N 2432 762 2464 2503 2273 1105 1816 1737 2491 2686

P 2559 813 2667 2630 2400 1168 1903 1824 2618 2813

R 2762 813 2921 2833 2603 1270 1903 1824 2821 3016

S 2864 813 2921 2935 2704 1320 2004 1925 2923 3118

T 3042 813 3099 3112 2882 1409 2146 2067 3101 3296

U 3191 813 3175 3324 3035 1486 2197 2118 3250 3447

Fig. 5 — Typical Installation with Drop-in Damper Box

*Field provided.

Fig. 4 — Roofing Materials — Recommendation

Fig. 6 — Assembling the Roof Curb

A62-246ef

NOTE: All dimensions shown in inches.

a62-376.eps

NAIL*

FLASHING*

ROOF FELT*

ROOF*

ROOF DECK*

CANT STRIP*

RIGID INSULATION*

GASKETING

ROOF CURB

A62-247ef

END

SIDE

Fig. 7 — 62EB-62EU Unit Curb Dimensions

62E

UNIT

TYPE

DIMENSION

A (in.)

DIMENSION

B (in.)

DIMENSION

C (in.)

B 27.221 24.721 10.861

C 34.721 32.221 14.611

D 40.521 38.021 17.511

E 50.721 48.221 22.611

H 63.141 60.641 28.821

K 73.721 71.221 34.111

L 78.721 76.221 36.611

62E

UNIT

TYPE

DIMENSION

A (in.)

DIMENSION

B (in.)

DIMENSION

C (in.)

M 85.721 83.221 40.111

N 91.721 89.221 43.111

P 96.721 94.221 45.611

R 104.721 102.221 49.611

S 108.721 106.221 51.611

T 115.721 113.221 55.111

U 121.721 119.221 58.111

NOTES:

1. All dimensions shown in inches.

2. Nailer sits even with top of curb. Do not cover any existing holes with nailer.

"A"

a62-377

62E

UNIT

TYPE

DIMENSION

A (mm)

DIMENSION

B (mm)

DIMENSION

C (mm)

B 691 628 276

C 882 818 371

D 1029 966 445

E 1288 1225 574

H 1604 1540 732

K 1873 1809 866

L 2000 1936 930

62E UNIT TYPE

DIMENSION

A (mm)

DIMENSION

B (mm)

DIMENSION

C (mm)

M 2177 2114 1019

N 2330 2266 1095

P 2457 2393 1159

R 2660 2596 1260

S 2762 2698 1311

T 2939 2876 1400

U 3092 3028 1476

I.D.

"C"

TYP. 2X

"A" I.D.

14.000

"B"

TYP. 2X

Fig. 8 — Typical 62EB-EU Unit Installation with Horizontal Base and Horizontal Transition

NOTE: All dimensions shown in inches.

a62-378

HVAC UNIT

RETURN AIR OPENING

ENERGY RECOVERY UNIT

HORIZONTAL

TRANSITION

SUPPLY OPENING

a62-443

Fig. 9 — Typical 62E2-E7 Unit Installation

25.00

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