Carrier 62E User Manual

Download

Page 1

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

Page 2

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

Page 3

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

Page 4

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

Page 5

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

Page 6

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-

Page 7

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-

Page 8

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

Page 9

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

Page 10

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

Page 11

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

Page 12

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

Page 13

CLEARANCE

"A"

CLEARANCE

"B"

CLEARANCE

36.000

DUCT CONNECTION

SPACE IF NO HOODS

"C"

SEE NOTE 3

FIELD TERMINAL STRIP

ACCESS

OUTSIDE AIR

HOOD

EXHAUST

HOOD

WHEEL AND FILTER

ACCESS

ROOF CURB

SCONNECT

LOCATION

OUTSIDE AIR

HOOD

EXHAUST

HOOD

DUCT CONNECTION

SPACE

"G"

"F"

"E"

DUCT O.D.

"D"

"H"

"I" "J"

DUCT O.D.

"D"

DUCT I.D.

"D" - 2.000

DUCT I.D.

"K"

DUCT I.D.

"K"

S/A

R/A

ONLY DUCT SLEEVE AND

ERV AIR DIVIDER SHOWING

62E UNIT TYPE

DIMENSIONS (in.)

A BCD E F G H I J K

7 36.000 36.000 1.869 28.995 31.734 36.375 32.176 31.186 11.984 36.905 12.813

2 18.000 36.000 1.179 36.495 39.171 43.875 39.663 38.673 16.215 41.239 16.497

3 18.000 40.000 3.795 42.295 44.847 49.675 45.463 44.473 16.215 41.099 19.272

4 18.000 50.000 4.238 52.495 55.066 59.875 55.673 54.673 21.132 49.631 23.997

5 24.000 64.000 4.516 64.915 67.486 72.295 68.093 67.093 27.131 53.013 30.207

6 18.000 75.000 9.542 75.495 78.066 82.875 78.673 77.673 27.131 58.963 35.247

Fig. 10 — 62E2-62E7 Unit Cabinet Dimensions

NOTES:

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

2. Dimensions are in inches.

3. Size the roof curb to allow for a clearance of 10-in. (254 mm) (minimum) between the bottom of the exhaust hood and the top of the insulated roof material.

62E UNIT TYPE

DIMENSIONS (mm)

A BCD E F G H I J K

7 914 914 47 736 806 924 817 792 304 937 325

2 457 914 30 927 995 1114 1007 982 412 1047 419

3 457 1016 96 1074 1139 1262 1155 1130 412 1044 490

4 457 1270 108 1333 1399 1521 1414 1389 537 1261 610

5 610 1626 115 1649 1714 1836 1730 1704 689 1347 767

6 457 1905 242 1918 1983 2105 1998 1973 689 1498 895

Page 14

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. See Fig 6. 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. See Fig. 7 and 11 for roof curb dimensions.

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

SET THE ROOF CURB — Fit the roof curb assembly by measuring across the corners of the curb to ensure a square fit. 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 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 THE HORIZONTAL BASE (62EB-EU UNITS ONLY) — Remove the fork pockets from the bottom of the horizontal base. After removing the fork pockets from the bottom of the horizontal base place the base on the roof curb. Secure the horizontal base to the curb using no. 14, 2-in. self-tapping sheet metal screws.

Apply the factory provided gasketing material to the top of the horizontal base. Follow the rigging directions in the Step 6 — Rig and Place Unit section to place the ERV on the horizontal base. Position the ERV so that the ERV's LCD display is on the opposite side of the horizontal base's duct openings. Secure the ERV to the horizontal base using 1-in. self-tapping sheet metal screws every 18 in. around the perimeter.

NOTE: The ERV may also be mounted to the horizontal base prior to being set on the roof curb.

INSTALL THE HORIZONTAL TRANSITION — Apply the factory-provided gasketing material to the horizontal transition at all points where duct connections are made. Attach the horizontal transition to the horizontal base (62EB-EU units) or the ERV (62E2-E7 units) and RTU return connection using 1-in. self-tapping sheet metal screws. Ensure that all connections are water and air tight.

Step 5 — Install Standard Roof Curb

VERTICAL STAND-ALONE APPLICATIONS (62EBEU UNITS) — The ERV unit can be installed without being coupled with a RTU. The ERV units can be installed in one of two stand-alone applications: vertical discharge or horizontal discharge. Vertical discharge requires the use of a standard roof curb. When installing a stand-alone ERV in a vertical application complete the following steps:

Locate 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 Fig. 2 and 3 for ERV clearance requirements.

Assemble the Roof Curb 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 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 openings. See Fig. 7 for duct opening dimensions. Frame the opening to provide adequate structural support.

— Prior to locating the roof curb

— Connect the curb side and the

— Cut a hole in the roof for duct

Set the Roof Curb 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 curb for vertical discharge stand-alone applications. The duct will hang from the top of the curb. Refer to Fig. 7 to determine the duct size required. Provide field manufactured 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.

Install Gaskets 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.

Install Roofing Materials the roof curb. Follow suggested and acceptable roofing practices 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. 4 for roofing recommendations.

HORIZONTAL STAND-ALONE APPLICATIONS (62EBEU and 62E2-E7 Units) — The ERV unit can be installed without being coupled with a RTU. The ERV units can be installed in one of two stand-alone applications: vertical discharge or horizontal discharge. Horizontal discharge with a 62EB-EU units requires the use of the horizontal base accessory. The horizontal base accessory include a horizontal discharge box and a roof curb to support the box. The horizontal base accessory is not required with 62E2-E7 units.

When installing a stand-alone ERV in a horizontal application complete the following steps:

Locate the Roof Curb sider the structural support required for the rooftop system. Allow sufficient space for service, clearance, and locations of vents or other sources of air. Refer to Fig. 2, 3, and 10 for ERV clearance requirements.

Assemble the Roof Curb 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. See Fig. 7 and 11 for roof curb dimensions.

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

Set the Roof Curb across the corners of the curb to ensure a square fit. 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 Roofing Materials 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 the Horizontal Base (62EB-EU Units Only) move the fork pockets from the bottom of the horizontal base. After removing the fork pockets, place the base on the roof curb. Secure the horizontal base to the curb using no. 14, 2-in. self-tapping sheet metal screws.

— Fit the roof curb assembly by measuring

— Ductwork will be installed in the roof

— The ERV roof curbs come with a gasketing

— Insulate and add a cant strip to

— Prior to locating the roof curb con-

— Connect the curb side and the

— Fit the roof curb assembly by measuring

— Insulate and add a cant strip to

— Re-

Page 15

"D"

62E UNIT

TYPE

DIMENSIONS (in.)

ABCDE

7 28.286 10.143 31.397 36.927 33.816

2 35.882 13.941 38.993 40.446 37.335

3 41.682 16.841 44.793 40.306 37.195

4 51.882 21.941 54.993 48.826 45.715

5 64.302 28.151 67.413 54.286 51.175

6 74.882 33.441 77.993 60.236 57.125

a62-442

NOTE: Dimensions are in inches.

Fig. 11 — 62E2-62E7 Unit Roof Curb Dimensions

62E UNIT

TYPE

DIMENSIONS (mm)

ABCDE

7 718 258 797 938 859

2 911 354 990 1027 948

3 1059 428 1138 1024 945

4 1318 557 1397 1240 1161

5 1633 715 1712 1379 1300

6 1902 849 1981 1530 1451

"C"

.500

"B" I.D. "B" I.D.

SECTION A-A

DETAIL B

SCALE 1 : 3

ERV RAIL SITS DOWN IN CHANNEL

.941

"A"

the horizontal base. Follow the rigging directions in the Step 6 — Rig and Place Unit section to place the ERV on the horizontal base. Position the ERV so that the ERV's LCD (liquid crystal diode) display is on the opposite side of the horizontal base's duct openings. Secure the ERV to the horizontal base using 1-in. self-tapping sheet metal screws every 18 in. around the perimeter.

Apply the factory provided gasketing material to the top of

14.559

NOTE: The ERV may also be mounted to the horizontal base prior to being set on the roof curb.

Install Ductwork

— Ductwork will be connected to the horizontal box (62EB-EU units) or directly to the ERV (62E2-E7 units) for stand-alone horizontal discharge and exhaust applications. See Fig. 12 for the horizontal box connection dimensions. See Fig. 10 for 62E2-E7 connection dimensions. Do not support the duct from the horizontal box. Provide field

"E"

Page 16

manufactured duct and attach to the supply and exhaust open-

FORK POCKETS (REMOVE BEFORE INSTALLING ON CURB)

62E UNIT

TYPE

DIMENSIONS (in.)

ABCDE B 27.221 12.111 8.750 14.000 22.604 C 34.721 15.861 12.500 14.000 22.604 D 40.521 18.761 15.400 18.000 26.600 E 50.721 23.861 20.500 21.000 29.604 H 63.141 30.071 26.710 24.000 32.604 K 72.721 34.861 31.500 26.022 34.637 L 78.721 37.861 34.500 26.022 34.637 M 85.721 41.361 38.000 26.022 34.637 N 91.721 44.361 41.000 31.011 39.615 P 96.721 46.861 43.500 33.052 41.682 R 104.721 50.861 47.500 33.052 41.682 S 108.721 52.861 49.500 35.110 43.769 T 115.721 56.361 53.000 35.110 43.769 U 115.721 56.361 53.000 35.110 43.769

a62-379

Fig. 12 — 62EB-62EU Unit Horizontal Discharge Box Dimensions

ings on the horizontal box.

Step 6 — Rig and Place Unit — 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.

CAUTION

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

Refer to Tables 1A and 1B for ERV unit weights. Check lift-

ing devices for capacity constraints.

Hook rigging shackles through the eyehooks in the ERV

unit. Connect lifting straps and spreader bars. See Fig 13.

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

WARNING

Never attempt to lift the ERV in any way that does not use all four (4) eyehooks. Lifting the unit with an uneven distribution of the weight may cause damage to the unit and/or personal injury or death.

IMPORTANT: Remove the fork pockets from the ERV unit before setting it on the roof curb.

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.

Page 17

Fig. 13 — Rigging and Handling

EYE HOOK

a62-380

(HIDDEN)

EYE HOOK

EYE HOOKS

FORK POCKETS

Step 7 — Make Electrical Connections

WARNING

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 3-5 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 3-5.

If the ERV unit has an electric pre-heater factory installed, it

will be wired through the ERV unit disconnect. Low Voltage Wiring

— Wire low voltage per Fig. 14. The field connection terminal strip is located behind the panel that is adjacent to the control box. The correct panel is marked with a green label stating “Attention: For field control of ERV, remove this panel to gain access to ERV field control terminal strip.” The wires connecting to the field terminal strip can be routed through the nearest

/4-in. hole and through conduit to the RTU, or they can be routed down the sidewall of the cabinet using the wire pull provided and routed through the combination curb to the RTU.

CAUTION

When routing wires in the ERV always keep them away from moving parts and sharp metal edges. Follow all local and state codes when routing the ERV control wires.

If the ERV unit is mated to a RTU, terminals C and G on the field control terminal strip of the ERV unit are connected to the corresponding terminals on the RTU cabinet. Verify the jumper is removed from the “ERV R” and “G” terminals; not doing so may damage RTU control equipment.

When the ERV is to be run as a stand-alone configuration, verify that a jumper is shorting the “ERV R” and “G” terminals

on the ERV field control terminal strip. This will enable the ERV to turn on and run.

If the HVAC unit has an integrated economizer or power exhaust, it is sometimes necessary to provide an interface between the HVAC unit and the ERV controls to ensure proper operation of the ERV’s supply/exhaust fan and energy recovery wheel motors. The 62E has discrete inputs for this purpose and damper end switches or relays may be used to coordinate the economizer and power exhaust operation with the ERV.

When an ERV is mated to an electro-mechanical rooftop unit with an economizer and a power exhaust, terminals C and G on the ERV field control terminal strip are still connected to the corresponding terminals on the rooftop unit cabinet (jumper across R and G needs to be removed). However, in addition, field supplied and installed end switches are required to coordinate operation with the unit. For unit economizer operation, it is necessary to install an Normally Open end switch (field provided) on the economizer actuator and connect to terminals 5 and 6 (ERV Shutdown) on the ERV terminal strip. This will cause the ERV to shut down during unit economizer operation. For power exhaust, based on building pressure control, no additional ERV wiring is required, however if the ERV is to provide power exhaust functionality then a field-installed Normally Closed end switch is required to be installed between terminals 7 and 8 on the ERV terminal strip.

High Voltage Wiring

— Connect high voltage wiring to the disconnect, see Fig. 14. Route the power wires in water tight conduit from the disconnect switch box to the ERV distribution block. To gain access to high voltage block, remove panel marked with label stating, “High voltage terminal block located behind this panel.”

Table 3 — ERV Wheel Motor and Control

Transformer Electrical Data

UNIT

62EB,E7

62EC,E2

62ED,E3

62EE,E4

62EH,E5

62EK,EL,EM,

EN,EP,E6

62ER,ES,

ET,EU

FLA — Full Load Amps W—Watts

UNIT

V-P h

115-1 115-1 80.5 0.70 75 0.65 230-1 230-1 69.0 0.30 75 0.33 230-3 230-1 69.0 0.30 75 0.33 400-3 230-1 69.0 0.15 75 0.16 460-3 230-1 69.0 0.15 75 0.16 575-3 230-1 69.0 0.12 75 0.13 230-1 230-1 69.0 0.30 75 0.33 230-3 230-1 69.0 0.30 75 0.33 400-3 230-1 69.0 0.15 75 0.16 460-3 230-1 69.0 0.15 75 0.16 575-3 230-1 69.0 0.12 75 0.13 230-3 230-1 69.0 0.30 75 0.33 400-3 230-1 69.0 0.15 75 0.16 460-3 230-1 69.0 0.15 75 0.16 575-3 230-1 69.0 0.12 75 0.13 230-3 230-3 138.3 1.04 75 0.33 400-3 460-3 138.3 0.52 75 0.16 460-3 460-3 138.3 0.52 75 0.16 575-3 575-3 99.7 0.30 75 0.13 230-3 230-3 99.7 0.75 75 0.33 400-3 460-3 101.0 0.38 75 0.16 460-3 460-3 101.0 0.38 75 0.16 575-3 575-3 99.7 0.30 75 0.13 230-3 230-3 332.4 2.50 75 0.33 400-3 460-3 319.1 1.20 75 0.16 460-3 460-3 319.1 1.20 75 0.16 575-3 575-3 315.8 0.95 75 0.13 230-3 230-3 452.0 3.40 75 0.33 400-3 460-3 452.0 1.70 75 0.16 460-3 460-3 452.0 1.70 75 0.16 575-3 575-3 465.3 1.40 75 0.13

LEGEND

ERV WHEEL MOTOR

V-Ph W FLA V FLA

CONTROL

TRANSFORMER

Page 18

Table 4 — Supply and Exhaust Fans Electrical Data

FAN

OPTION

A B,7

B B,7

K S,T,U

L H,K,L

LEGEND

FLA — Full Load Amps Qty — Quantity W—Watts

62E

CHASSIS

C,2

D,E,3, 4

E,H,K,

4,5,6

H,K,L, M,N,P,

4,6

L,M,N,

P, R

R,S,

T, U

R,S,

T, U

UNIT V-Ph

V-Ph W FLA Q ty

FAN MOTOR

115-1 115-1 455 3.96 1 230-1 230-1 400 1.74 1 230-3 230-1 400 1.74 1 460-3 200-1 400 0.87 1 460-3 230-1 400 0.87 1 575-3 230-1 400 0.70 1 115-1 115-1 455 3.96 2 230-1 115-1 455 1.98 2 230-3 115-1 455 1.98 2 400-3 115-1 455 0.99 2 460-3 115-1 455 0.99 2 575-3 115-1 455 0.79 2 230-1 230-1 395 1.72 1 230-3 230-3 880 2.21 1 400-3 460-3 880 1.11 1 460-3 460-3 880 1.11 1 575-3 460-3 880 0.88 1 230-3 230-3 880 2.21 1 400-3 460-3 880 1.11 1 460-3 460-3 880 1.11 1 575-3 460-3 880 0.88 1 230-3 230-3 2700 6.79 1 400-3 460-3 2700 3.39 1 460-3 460-3 2700 3.39 1 575-3 460-3 2700 2.71 1 230-3 230-3 2700 6.79 2 400-3 460-3 2700 3.39 2 460-3 460-3 2700 3.39 2 575-3 460-3 2700 2.71 2 230-3 230-3 2700 6.79 3 400-3 460-3 2700 3.39 3 460-3 460-3 2700 3.39 3 575-3 460-3 2700 2.71 3 230-3 230-3 2700 6.79 4 400-3 460-3 2700 3.39 4 460-3 460-3 2700 3.39 4 575-3 460-3 2700 2.71 4 230-3 230-3 2700 6.79 5 400-3 460-3 2700 3.39 5 460-3 460-3 2700 3.39 5 575-3 460-3 2700 2.71 5 230-3 230-3 2700 6.79 6 400-3 460-3 2700 3.39 6 460-3 460-3 2700 3.39 6 575-3 460-3 2700 2.71 6 230-3 230-3 2900 7.29 1 400-3 460-3 2900 3.64 1 460-3 460-3 2900 3.64 1 575-3 460-3 2900 2.92 1

Page 19

Table 4 — Supply and Exhaust Fans Electrical Data (cont)

FAN

OPTION

P T, U

R T, U

LEGEND

FLA — Full Load Amps Qty — Quantity W—Watts

62E

CHASSIS

K,L,M,

N,P,R

R,S,

T, U

UNIT V-Ph

V-Ph W FLA Q ty

230-3 230-3 2900 7.29 2 400-3 460-3 2900 3.64 2 460-3 460-3 2900 3.64 2 575-3 460-3 2900 2.92 2 230-3 230-3 2900 7.29 3 400-3 460-3 2900 3.64 3 460-3 460-3 2900 3.64 3 575-3 460-3 2900 2.92 3 230-3 230-3 2700 6.79 7 400-3 460-3 2700 3.39 7 460-3 460-3 2700 3.39 7 575-3 460-3 2700 2.71 7 230-3 230-3 2700 6.79 8 400-3 460-3 2700 3.39 8 460-3 460-3 2700 3.39 8 575-3 460-3 2700 2.71 8

Table 5 — Electric Heat Electrical Data

FAN MOTOR

kW FLA

LEGEND

FLA — Full Load Amps W—Watts

HEATER

UNIT AND HEATER

V-Ph

62E CHASSIS

17.39 115-1 B,7

8.70 230-1 B,C,2,7

5.03 230-3 B,C,D,E,2,3,4,7

2.51 400-3 B,C,D,E,2,3,4,7

2.51 460-3 B,C,D,E,2,3,4,7

2.01 575-3 B,C,D,E,2,3,4,7

43.48 115-1 B,7

21.74 230-1 B,C,2,7

12.57 230-3 B,C,D,E,H,2,3,4,5,7

6.28 400-3 B,C,D,E,H,2,3,4,5,7

6.28 460-3 B,C,D,E,H,2,3,4,5,7

5.03 575-3 B,C,D,E,H,2,3,4,5,7

20.11 230-3 D,E,H,3,4,5

10.05 400-3 D,E,H,3,4,5

10.05 460-3 D,E,H,3,4,5

8.04 575-3 D,E,H,3,4,5

25.13 230-3 E,H,K,L,4,5,6

12.57 400-3 E,H,K,L,4,5,6

12.57 460-3 E,H,K,L,4,5,6

10.05 575-3 E,H,K,L,4,5,6

37.70 230-3 H,K,L,M,N,5,6

18.85 400-3 H,K,L,M,N,5,6

18.85 460-3 H,K,L,M,N,5,6

15.08 575-3 H,K,L,M,N,5,6

50.26 230-3 H,K,L,M,N,P,5,6

25.13 400-3 H,K,L,M,N,P,5,6

25.13 460-3 H,K,L,M,N,P,5,6

20.11 575-3 H,K,L,M,N,P,5,6

Page 20

Table 5 — Electric Heat Electrical Data (cont)

kW FLA

LEGEND

FLA — Full Load Amps W—Watts

HEATER

UNIT AND HEATER

V-Ph

62E CHASSIS

62.83 230-3 H,K,L,M,N,P,R,S,5,6

31.42 400-3 H,K,L,M,N,P,R,S,5,6

31.42 460-3 H,K,L,M,N,P,R,S,5,6

25.13 575-3 H,K,L,M,N,P,R,S,5,6

75.40 230-3 K,L,M,N,P,R,S,T,U,6

37.70 400-3 K,L,M,N,P,R,S,T,U,6

37.70 460-3 K,L,M,N,P,R,S,T,U,6

30.16 575-3 K,L,M,N,P,R,S,T,U,6

87.96 230-3 L,M,N,P,R,S,T,U

43.98 400-3 L,M,N,P,R,S,T,U

43.98 460-3 L,M,N,P,R,S,T,U

35.18 575-3 L,M,N,P,R,S,T,U

100.53 230-3 M,N,P,R,S,T,U

50.26 400-3 M,N,P,R,S,T,U

50.26 460-3 M,N,P,R,S,T,U

40.21 575-3 M,N,P,R,S,T,U

113.09 230-3 N,P,R,S,T,U

56.55 400-3 N,P,R,S,T,U

56.55 460-3 N,P,R,S,T,U

45.24 575-3 N,P,R,S,T,U

125.66 230-3 P,R,S,T,U

62.83 400-3 P,R,S,T,U

62.83 460-3 P,R,S,T,U

50.26 575-3 P,R,S,T,U

138.23 230-3 R,S,T,U

69.11 400-3 R,S,T,U

69.11 460-3 R,S,T,U

55.29 575-3 R,S,T,U

150.79 230-3 S,T,U

75.40 400-3 S,T,U

75.40 460-3 S,T,U

60.32 575-3 S,T,U

163.36 230-3 S,T,U

81.68 400-3 S,T,U

81.68 460-3 S,T,U

65.34 575-3 S,T,U

175.92 230-3 S,T,U

87.96 400-3 S,T,U

87.96 460-3 S,T,U

70.37 575-3 S,T,U

188.49 230-3 T,U

94.24 400-3 T,U

94.24 460-3 T,U

75.40 575-3 T,U

201.06 230-3 U

100.53 400-3 U

100.53 460-3 U

80.42 575-3 U

213.62 230-3 U

106.81 400-3 U

106.81 460-3 U

85.45 575-3 U

Page 21

ERV OPTION BOARD #1

ERV OPTION BOARD #2

Fig. 14 — Typical Wiring Schematic

Page 22

START-UP



Fig. 15 — ERV Wheel Rotation

a62-383.eps

Use the following information to check unit PRIOR to start-up.

CAUTION

Before turning the disconnect switch on, verify that the voltage being provided to the ERV unit matches the voltage shown on the ERV nameplate. Failure to do so could result in equipment damage.

Unit Preparation — Check that the unit has been in-

stalled in accordance with these installation instructions and all applicable codes.

Check all fasteners and set screws for tightness. Verify that all of the panels are in place and secure. Verify that any openings to the ERV cabinet are clear of foreign materials.

Internal Wiring — Check all electrical connections in the

control box. Tighten as required.

Rain Hoods — The outside air hood will include alumi-

num 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 the wheel, are secure and in good condition. Air seals which are too tight will prevent proper rotation of the energy recovery wheel.

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. Re-check the air seals for tightness after adjustment.

Replace the access door and apply power. Check that the wheel rotates freely. If the wheel does not rotate or is binding, remove the cassette and adjust.

For units with three phase power only: Remove the service door to make sure the wheel is turning in the same direction as the sticker next to the motor shows. See Fig. 15. If the wheel is turning in the wrong direction turn, off the disconnect switch and have a qualified electrician swap any 2 of the power leads on the load side of the disconnect switch.

Airflow Settings and Adjustments — With the

disconnect on, the display should show "ERV FAN SPEED" on the top line of the display. The bottom line of the display should show "OA=XXX EX=XXX" where the “X”s represent the blower output percentage for the outside air blowers and the exhaust air blowers.

NOTE: If any of the alarms are tripped, the LCD display will scroll between the alarms and the normal display.

To measure the airflow the 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. The static pressure is measured on both the supply and return sides of the wheel. Take this pressure reading and match up the wheel differential pressure ( P) to pressure chart to display the cfm that is flowing through the ERV wheel. See Table 6.

To balance the airflow remove the small panel next to the control panel cover to access the user input controls. Press the push button and turn the knob clockwise to increase or counterclockwise to decrease the outside air blower speed (use the test ports and charts described above to calculate cfm levels). Press the push button again to change the exhaust air blower speed. Press the button again to return to the main screen. Replace the user control cover when ERV cabinet is operating at the correct blower speeds.

Page 23

Table 6 — Airflow vs. Pressure Drop Across ERV Wheel

62E UNIT AIRFLOW VS. PRESSURE DROP ACROSS ERV WHEEL

BA,7A

BC,7C

CC,2C

CD,2D

CG,2G

DD,3D

DG,3G

EB,4B

ED,4D

EF,4F

EG,4G

HB,5B

HD,5D

HF,5F

HG,5G

KD,6D

KG,6G

NOTE: Pressure sensing ports are provided on both sides of the ERV wheel for testing and balancing.

l/s 94 118 142 165 189 212 236 260 283 307 330 354 378 — — — — pa 47 62 77 95 109 127 142 157 174 189 207 221 239 — — — — l/s 94 118 142 165 189 212 236 260 283 307 330 354 378 401 425 — — pa 60 75 90 104 119 134 149 164 179 194 209 224 239 254 1.08 — — l/s 236 260 283 307 330 354 378 401 425 448 472 496 519 543 — — — pa 112 124 137 149 162 174 187 199 211 224 236 249 261 274 — — — l/s 189 212 236 260 283 307 330 354 378 401 425 448 472 496 519 543 — pa 112 124 137 149 162 174 187 199 211 224 236 249 261 274 286 299 — l/s 283 307 330 354 378 401 425 448 472 496 519 543 566 590 614 637 661 pa 112 124 137 147 159 169 182 194 204 216 229 239 251 261 274 286 296 l/s 283 330 378 425 472 519 566 614 661 708 755 — — — — — — pa 114 132 149 167 184 199 216 234 251 269 286 — — — — — — l/s 425 472 519 566 614 661 708 755 802 850 897 944 — — — — — pa 117 132 149 164 179 197 211 226 244 259 274 291 — — — — — l/s 378 425 472 519 566 614 661 708 755 802 850 — — — — — — pa 164 177 192 207 221 234 249 264 276 291 306 — — — — — — l/s 519 566 614 661 708 755 802 850 897 944 991 1038 1086 1133 1180 1227 — pa 127 137 149 162 172 184 197 207 219 231 244 254 266 279 289 301 — l/s 614 661 708 755 802 850 897 944 991 1038 1086 1133 1180 1227 1274 — — pa 149 159 172 182 194 204 216 226 239 251 261 274 284 296 306 — — l/s 661 755 850 944 1038 1133 1227 1322 1416 1510 1605 1699 1794 1841 — — — pa 119 134 149 164 179 194 209 224 239 254 269 284 299 306 — — — l/s 661 755 850 944 1038 1133 1227 1322 1416 1510 1605 1699 — — — — — pa 144 157 172 184 199 211 224 239 251 266 279 294 — — — — — l/s 1062 1180 1298 1416 1534 1652 1770 1888 2006 2124 2242 2360 2478 2596 2714 — — pa 119 132 144 159 172 184 199 211 224 239 251 264 276 291 304 — — l/s 1038 1133 1227 1322 1416 1510 1605 1699 1794 1888 1982 2077 2171 2266 2360 2454 2549 pa 119 129 142 152 162 174 184 194 204 216 226 236 249 259 269 281 291 l/s 1534 1770 2006 2242 2478 2596 2714 2832 2950 3068 3186 3304 3422 3540 3658 3776 3894 pa 119 147 164 182 199 207 216 224 234 241 251 259 269 276 286 294 304 l/s 1416 1652 1888 2124 2360 2596 2832 3068 3304 3540 3776 — — — — — — pa 112 132 149 169 187 207 224 244 261 281 299 — — — — — — l/s 1888 2124 2360 2596 2832 3068 3304 3540 3776 4012 4248 4484 4720 4956 5192 5428 5664 pa 114 127 139 152 162 174 187 199 211 224 236 249 261 274 286 299 311

Page 24

Table 6 — Airflow vs. Pressure Drop Across ERV Wheel (cont)

Fig. 16 — LCD Display

a62-384.eps

Fig. 17 — ERV Cfm Screen

a62-385.eps

Fig. 18 — Outside Air Cfm Screen

-386.eps

62E

UNIT

l/s 1652 1888 2124 2360 2596 2832 3068 3304 3540 3776 4012 4248 4484 — — — —

pa 114 129 147 162 179 194 211 226 244 261 276 294 304 — — — —

l/s 2360 2832 3068 3304 3540 3776 4012 4248 4484 4720 4956 5192 5428 5664 5900 6136 6372

pa 122 144 154 164 177 187 197 209 219 229 239 251 261 271 284 294 304

l/s 2124 2360 2596 2832 3068 3304 3540 3776 4012 4248 4484 4720 4956 5192 — — —

pa 124 139 152 167 179 194 207 221 234 249 264 276 291 304 — — —

l/s 2832 3304 3776 4248 4720 4956 5192 5428 5664 5900 6136 6372 6608 6844 7080 7316 7552

pa 124 142 162 179 197 207 216 224 234 244 251 261 271 279 289 299 306

l/s 2596 2832 3068 3304 3540 3776 4012 4248 4484 4720 4956 5192 5428 5664 5900 6136 6372

pa 124 137 147 159 169 182 192 204 214 226 239 249 261 271 284 294 306

l/s 3540 4012 4484 4956 5428 5900 6372 6844 7316 7788 8260 8732 9204 — — — —

pa 127 142 157 172 187 202 216 231 246 261 276 291 306 — — — —

l/s 2832 3304 3776 4012 4248 4484 4720 4956 5192 5428 5664 5900 6136 6372 6608 6844 7080

pa 119 139 159 169 179 189 199 209 219 229 239 249 259 269 279 289 299

l/s 3776 4248 4720 5192 5664 6136 6608 7080 7552 8024 8496 8968 9440 9912 10384 — —

pa 119 134 147 159 172 187 199 211 226 239 251 264 279 291 304 — —

l/s 3304 3776 4248 4720 5192 5428 5664 5900 6136 6372 6608 6844 7080 7316 7552 7788 8024

pa 127 144 162 182 199 209 216 226 234 244 254 264 271 281 289 299 309

l/s 4248 4720 5192 5664 6136 6608 7080 7552 8024 8496 8968 9440 9912 10384 10856 11328 —

pa 122 134 147 159 169 182 194 207 216 229 241 254 266 276 289 301 —

l/s 3776 4248 4720 5192 5664 6136 6372 6608 6844 7080 7316 7552 7788 8024 8260 8496 8732

pa 122 137 152 167 182 197 204 211 219 226 234 241 249 256 264 271 279

l/s 5192 6136 7080 7552 8024 8496 8968 9440 9912 10384 10856 11328 11800 12272 12744 13216 13688

pa 124 144 164 174 184 194 204 214 224 234 244 254 264 274 284 294 304

l/s 4248 4720 5192 5664 6136 6608 7080 7552 8024 8496 8968 9440 9912 10384 — — —

pa 127 139 154 167 182 197 209 224 236 251 266 279 294 306 — — —

l/s 5664 6608 7552 8496 8968 9440 9912 10384 10856 11328 11800 12272 12744 13216 13688 14160 14632

pa 124 144 162 182 189 199 209 216 226 236 246 254 264 274 281 291 301

l/s 4720 5192 5664 6136 6608 7080 7552 8024 8496 8968 9440 9912 10384 10856 11328 11800 —

pa 100 134 147 159 172 184 197 207 219 231 244 256 269 281 294 306 —

l/s 6608 7552 8496 9440 10384 11328 11800 12272 12744 13216 13688 14160 14632 15104 15576 16048 16520

pa 127 144 159 177 192 209 216 224 231 241 249 256 264 274 281 289 296

NOTE: Pressure sensing ports are provided on both sides of the ERV wheel for testing and balancing.

AIRFLOW VS. PRESSURE DROP ACROSS ERV WHEEL

UNITS WITH EZERV CONTROL OPTION — With the EzERV option, the LCD display will change to show the amount of air moving through the cabinet in cubic feet per minute (cfm). The screen is divided into two columns: The left column showing the amount of outside air (Osa/CFM) and the right column showing the exhaust air (Ext/CFM). To adjust the fan speeds, remove the small panel next to the control panel cover to access the user input controls. See Fig. 16.

Balanced Air Option

— Press the push button once to bring up the ERV cfm screen. Turn the knob clockwise to increase or counterclockwise to decrease the amount of outside air coming into the building. See Fig. 17. The exhaust airflow will automatically adjust to equal the supply airflow. Press the button again to return to the main screen. Replace the user control cover.

Offset Air Option

— Press the push button once to bring up the outside air cfm screen. Turn the knob clockwise to increase or counterclockwise to decrease the amount of outside air coming into the building. See Fig. 18.

Press the push button again to bring up the exhaust air offset screen. A negative exhaust air offset would equate to a smaller amount of air being exhausted from the building when compared to the outside air being supplied to the building. Adjust the knob clockwise to increase and counterclockwise to decrease the exhaust offset cfm level. See Fig. 19. Press the

Page 25

button again to return to the main screen. Replace the user con-

Fig. 19 — Exhaust Air Offset Screen

Fig. 20 — Modulating Cfm

a62-388.eps

Fig. 21 — Maximum Cfm Screen

a62-389.eps

Fig. 22 — Minimum CO2 Screen

a62-390.eps

Fig. 23 — Maximum CO2 Screen

a62-391.eps

trol cover.

Modulating CO

with Balanced Air Option (Fig. 20) —

This option allows the user to enter minimum and maximum outside airflow levels. The user will then be allowed to enter minimum and maximum CO modulate the cfm of the ERV based on the building CO To enter the user settings press the pushbutton once to display

levels. The EzERV program will

level.

the minimum cfm screen. Adjust the knob clockwise to increase and counterclockwise to decrease the minimum cfm level.

Press the push button again to display the maximum cfm screen. Adjust the knob clockwise to increase and counterclockwise to decrease the maximum cfm level. See Fig. 21.

Press the push button again to display the minimum CO level screen. Adjust the knob clockwise to increase and counterclockwise to decrease the minimum CO2 level. See Fig. 22.

Press the push button again to display the maximum CO level screen. Adjust the knob clockwise to increase and counterclockwise to decrease the maximum CO

level. See Fig. 23.

The exhaust airflow will automatically adjust to equal the supply airflow. Press the button again to return to the main screen. Replace the user control cover.

NOTE: The scale for the cfm vs. CO sensor that outputs 0-vdc at 0 ppm CO2 and 10-vdc at 2000 ppm CO

. For example, using the figures above, the air-

level is based on a CO

flow would modulate linearly from 1458 L/s (3090 cfm) at 3vdc to 2336 L/s (4950 cfm) at 5-vdc. A signal below 3-vdc would result in a constant 1458 L/s (3090 cfm) while a signal above 5-vdc would result in a constant 2336 L/s (4950 cfm).

Modulating CO above for modulating CO2 with balanced air. After setting the maximum CO

with Offset Air Option — Follow the steps

level press the push button again to display the

exhaust air offset screen. A negative exhaust air offset would equate to a smaller amount of air being exhausted from the building when compared to the outside air being supplied to the building. Adjust the knob clockwise to increase and counterclockwise to decrease the exhaust offset cfm level. Press the button again to return to the main screen. Replace the user control cover.

Building Pressure Control Option

— This option will hold the outside air cfm level constant and will modulate the exhaust airflow to maintain the building pressure set point. Press the push button once to bring up the ERV cfm screen. Turn the knob clockwise to increase or counterclockwise to decrease the amount of outside air coming into the building. Press the push button again to display the "Building Pressure Set Point" screen. Adjust the knob clockwise to increase and counterclockwise to decrease the desired building pressure level. Press the button again to return to the main screen. Replace the user control cover.

Modulating CO

with Building Pressure Control Option —

This option will modulate the supply fan of the ERV based on the building CO to maintain the building pressure set point. Follow the proce-

level, and will modulate the exhaust airflow

dure outlined above to configure the minimum and maximum outside airflow and CO CO

level press the push button once more to display the build-

levels. After setting the maximum

ing pressure set point screen. Adjust the knob clockwise to increase and counterclockwise to decrease the desired building pressure level. Press the button again to return to the main screen. Replace the user control cover.

Operating Sequence — When operation is called for

by the rooftop supply fan interlock or remote timer option, the ERV supply blower(s), exhaust blower(s) and wheel motor will be energized. The supply and exhaust blowers will provide the adjusted/programmed airflow and the ERV wheel will rotate at a constant speed unless influenced by one of the following con-

ditions. The sequence of operation is shown in Fig. 24. LOW TEMPERATURE LOCKOUT — The optional low

temperature lockout function locks out the 62E ERV if the outdoor-air temperature entering the wheel is below the set point. The low temperature lockout is factory set at –23.3 C (–10 F), and can be field adjusted from –34.4 C to 37.8 C (–30 F to 100 F).

FROST PROTECTION — The frost protection option monitors the pressure drop across the ERV wheel. If the pressure drop rises above an adjustable limit, the outside air fan will be de-energized for a 5-minute period. The setting must be field set at 50% above (1.5 times) the pressure drop measured at the maximum adjusted airflow and a clean, dry wheel.

ERV WHEEL VARIABLE FREQUENCY DRIVE (VFD) — The ERV wheel VFD option monitors the pressure drop across the ERV wheel. If the pressure drop rises above an adjustable limit, the ERV wheel rotational speed will be reduced for a minimum of 5 minutes to defrost the wheel. The setting must be field set at 50% above (1.5 times) the pressure drop measured at the maximum adjusted airflow and a clean, dry wheel.

PRE-HEATERS — Units may be equipped with electric preheaters to prevent frost build-up on the wheel by slightly warming the outdoor air. This feature monitors the pressure drop across the ERV wheel and the outdoor-air temperature. If the pressure drop rises above an adjustable limit and the outdoor-air temperature is below an adjustable set point, the heaters will be energized. The wheel pressure drop setting must be field set at 50% above (1.5 times) the pressure drop measured at the maximum adjusted airflow and a clean, dry wheel. The outdoor air thermostat is factory set to activate at –20.6 C (–5 F), and can be field adjusted from –34.4 C to 37.8 C (–30 F to 100 F).

Page 26

FALSE

TRUE

FALSE

TRUE

ERV Wheel Off Supply Blower Off Exhaust Blower Off 2-Pos Motor Closed

Wheel Maintenance Indicator Off Supply Blower Maintenance Indicator Off Exhaust Blower Maintenance Indicator Off

ERV Wheel On Supply Blower Off Exhaust Blower On 2-Pos Motor Open

Wheel Maintenance Indicator On Supply Blower Maintenance Indicator Off Exhaust Blower Maintenance Indicator On

ERV Wheel Modulating Supply Blower On Exhaust Blower On 2-Pos Motor Open

Wheel Maintenance Indicator On Supply Blower Maintenance Indicator On Exhaust Blower Mainten

ance Indicator On

ERV Wheel Stop/Jog Supply Blower Off Exhaust Blower On 2-Pos Motor Open

Wheel Maintenance Indicator On Supply Blower Maintenance Indicator Off Exhaust Blower Maintenance Indicator On

ERV Wheel Stop/Jog Supply Blower On Exhaust Blower On 2-Pos Motor Open

Wheel Maintenance Indicator On Supply Blower Maintenance Indicator On Exhaust Blower Maintenance Indicator On

ERV Wheel On Supply Blower On Exhaust Blower On 2-Pos Motor Open

Wheel Maintenance Indicator On Supply Blower Maintenance Indicator On Exhaust Blower M

aintenance Indicator On

Preheat available if pressure or temperature are correct for usage

Low Temp Lock Out

Option 51 Lockout Activated

HVAC Supply Fan On or ERV Timer Option Active or Stand Alone Short Pins 31 to 30 and 29 to 28

CO2 Level Not High Enough in Space

Economizer Full Open End Switch

Frost Option Wheel Iced

Frost Option Wheel Iced VFD

ERV Power Exhaust Mode

Free Cooling Dry Bulb Enthalpy Option and W1 and G a

re Off

Fig. 24 — ERV Sequence of Operation

a62-540

Page 27

MOTORIZED DAMPERS — Units may have an optional two-position outside-air damper, exhaust-air damper, or both. The dampers will modulate closed when the ERV is off.

MODULATING CO

CONTROL — The supply fan speed

will be modulated to provide supply airflow between minimum and maximum levels based on a programmed indoor CO level.

BUILDING PRESSURE CONTROL — The exhaust fan speed will be modulated to provide supply airflow between minimum and maximum levels based on a programmed indoor building pressure.

ERV UNIT WITH ECONOMIZER, STOP JOG AND EXHAUST BLOWER RUNNING — This option is used when the RTU is equipment with an economizer without power exhaust. When the RTU opens the economizer to provide free cooling, the ERV supply fan will turn off. The ERV wheel will be periodically rotated to prevent build-up of contaminates on the wheel. The ERV exhaust fan will continue to operate.

ERV UNIT WITH ECONOMIZER; ERV DOES NOT RUN — This option is used when the RTU is equipped with an economizer with power exhaust. When the RTU opens the economizer to provide free cooling, the ERV supply and exhaust fans will turn off. The ERV wheel will also be turned off.

ComfortLink™ Interface Device — The purpose of

the device is to provide factory-installed “Plug and Play” control interface between the 62E and a Carrier rooftop unit Com- fortLink control system. The interface allows for optimal system operation by sharing unit data and properly coordinating energy recovery, economizer, and power exhaust operation.

For HVAC units with electro-mechanical controls, damper end switches or relays may be used to coordinate the economizer and power exhaust operation with the ERV. On units with ComfortLink controls, this becomes more of a challenge since the economizer and power exhaust sequencing is determined through software logic and not electromechanical devices. The ComfortLink interface device allows the 62E controls to read key data points and force critical operating parameters in the 48/50A unit’s ComfortLink logic to ensure proper system operation. The factory-installed option includes a preprogrammed translator that allows the 62E controller to access the ComfortLink controls through the unit’s LEN (local equipment network) plug.

Optional BACnet or LON Communications Interface —

LON (local operating network) communications interface options use the UPC Open controller. The controller

The BACnet* Communication interface and

communicates using BACnet on an MS/TP network segment communications at 9600 bps, 19.2 kbps, 38.4 kbps, or 76.8 kbps.

WIRING — Wire the controllers on an MS/TP network segment in a daisy-chain configuration. Wire specifications for the

cable are 22 AWG (American Wire Gage) or 24 AWG, low-capacitance, twisted, stranded, shielded copper wire. The maximum length is 2000 ft.

Install a BT485 terminator on the first and last controller on a network segment to add bias and prevent signal distortions due to echoing. See Fig. 25-27.

To wire the UPC Open controller to the BAS (buidling automation system) network:

1. Pull the screw terminal connector from the controller's BAS Port.

2. Check the communications wiring for shorts and grounds.

3. Connect the communications wiring to the BAS port’s screw terminals labeled Net +, Net -, and Shield.

NOTE: Use the same polarity throughout the network segment.

4. Insert the power screw terminal connector into the UPC Open controller's power terminals if they are not currently connected.

5. Verify communication with the network by viewing a module status report. To perform a module status report using the BACview keypad/display unit, press and hold the “FN” key then press the “.” Key.

To install a BT485 terminator, push the BT485, on to the

BT485 connector located near the BACnet connector. NOTE: The BT485 terminator has no polarity associated with

it.

To order a BT485 terminator, consult Commercial Products

i-Vu

Open Control System Master Prices.

MS/TP WIRING RECOMMENDATIONS — Recommendations are shown in Tables 7 and 8. The wire jacket and UL temperature rating specifications list two acceptable alternatives. The Halar specification has a higher temperature rating and a tougher outer jacket than the SmokeGard specification, and it is appropriate for use in applications where the user is concerned about abrasion. The Halar jacket is also less likely to crack in extremely low temperatures.

NOTE: Use the specified type of wire and cable for maximum signal integrity.

Table 7 — UPC Open System Wiring Specifications and Recommended Vendors

WIRING SPECIFICATIONS RECOMMENDED VENDORS AND PART NUMBERS

Wire Type Description

22 AWG, single twisted shielded pair, low capacitance, CL2P, TC foam FEP, plenum rated. See MS/TP Installation Guide for

MS/TP

Network (RS-485)

Rnet 4 conductor, unshielded, CMP, 18 AWG, plenum rated. W184C-2099BLB 6302UE 21450 CLP0442

LEGEND

AWG — American Wire Gage CL2P — Class 2 Plenum Cable CMP — Communications Plenum Rated FEP — Fluorinated Ethylene Polymer TC — Tinned Copper

specifications. 24 AWG, single twisted shielded pair, low capacitance, CL2P,

TC foam FEP, plenum rated. See MS/TP Installation Guide for specifications.

* Sponsored by ASHRAE (American Society of Heating, Refrigerating, and Air Conditioning Engineers).

Connect Air

International

W221P-22227 — 25160PV CLP0520LC

W241P-2000F 82841 25120-OR —

Belden RMCORP

Contractors

Wire and Cable

Page 28

Fig. 25 — UPC Open Controller

BACNET BAUD RATE DIP SWITCHES

ADDRESS ROTARY SWITCHES

POWER LED

RUN LED

ERROR LED

BACNET CONNECTION (BAS PORT)

BT485 TERMINATOR

Tx2 LED

Rx2 LED

Tx1 LED

Rx1 LED

EIA-485 JUMPERS

Fig. 26 — Network Wiring

Page 29

Table 8 — MS/TP Wiring Recommendations

Fig. 27 — BT485 Terminator Installation

Fig. 28 — Address Rotary Switches

SPECIFICATION RECOMMMENDATION

Cable Single twisted pair, low capacitance, CL2P, 22 AWG (7x30), TC foam FEP, plenum rated cable

Conductor 22 or 24 AWG stranded copper (tin plated)

Insulation Foamed FEP 0.015 in. (0.381 mm) wall 0.060 in. (1.524 mm) O.D.

Color Code Black/White

Twi st Lay 2 in. (50.8 mm) lay on pair 6 twists/foot (20 twists/meter) nominal Shielding Aluminum/Mylar shield with 24 AWG TC drain wire

Jacket

DC Resistance 15.2 Ohms/1000 feet (50 Ohms/km) nominal

Capacitance 12.5 pF/ft (41 pF/meter) nominal conductor to conductor

Characteristic Impedance 100 Ohms nominal

Weight 12 lb/1000 feet (17.9 kg/km)

UL Temperature Rating SmokeGard 167°F (75°C), Halar -40 to 302°F (-40 to 150°C)

Vo lt ag e 300 Vac, power limited

Listing UL: NEC CL2P, or better

LEGEND

AWG — American Wire Gage CL2P — Class 2 Plenum Cable DC — Direct Current FEP — Fluorinated Ethylene Polymer NEC — National Electrical Code O.D. — Outside Diameter TC — Tinned Copper UL — Underwriters Laboratories

SmokeGard Jacket (SmokeGard PVC) 0.021 in. (0.5334 mm) wall 0.175 in. (4.445 mm) O.D. Halar Jacket (E-CTFE) 0.010 in. (0.254 mm) wall 0.144 in. (3.6576 mm) O.D.

TO ADDRESS THE UPC OPEN CONTROLLER — The user must give the UPC Open controller an address that is unique on the BACnet network. Perform the following procedure to assign an address:

1. If the UPC Open controller is powered, pull the screw terminal connector from the controller's power terminals labeled Gnd and HOT. The controller reads the address each time power is applied to it.

2. Using the rotary switches (see Fig. 25 and 28), set the controller's address. Set the Tens (10's) switch to the tens digit of the address, and set the Ones (1's) switch to the ones digit.

As an example in Fig. 28, if the controller’s address is 25, point the arrow on the Tens (10's) switch to 2 and the arrow on the Ones (1's) switch to 5.

10's

1's

BACNET DEVICE INSTANCE ADDRESS — The UPC Open controller also has a BACnet Device Instance address. This Device Instance MUST be unique for the complete BACnet system in which the UPC Open controller is installed. The Device Instance is auto generated by default and is derived by

Page 30

adding the MAC address to the end of the Network Number.

Fig. 29 — DIP Switches

The Network Number of a new UPC Open controller is 16101, but it can be changed using i-Vu

Tools or BACView device. By default, a MAC address of 20 will result in a Device Instance of 16101 + 20 which would be a Device Instance of

1610120. CONFIGURING THE BAS PORT FOR BACNET MS/

TP — Use the same baud rate and communication settings for all controllers on the network segment. The UPC Open controller is fixed at 8 data bits, No Parity, and 1 Stop bit for this protocol's communications.

If the UPC Open controller has been wired for power, pull the screw terminal connector from the controller's power terminals labeled Gnd and HOT. The controller reads the DIP Switches and jumpers each time power is applied to it.

Set the BAS Port DIP switch DS3 to “enable.” Set the BAS Port DIP switch DS4 to “E1-485.” Set the BMS Protocol DIP switches DS8 through DS5 to “MSTP.” See Table 9.

Table 9 — SW3 Protocol Switch Settings

for MS/TP

DS8 DS7 DS6 DS5 DS4 DS3

OffOffOffOffOnOff

Verify that the EIA-485 jumpers below the CCN Port are set to EIA-485 and 2W.

The example in Fig. 29 shows the BAS Port DIP Switches set for 76.8k (Carrier default) and MS/TP.

Set the BAS Port DIP Switches DS2 and DS1 for the appropriate communications speed of the MS/TP network (9600,

19.2k, 38.4k, or 76.8k bps). See Fig. 29 and Table 10.

Table 10 — Baud Selection Table

BAUD RATE DS2 DS1

9,600 Off Off 19,200 On Off 38,400 Off On 76,800 On On

DIP switch 3 is used to set up which port the building network is connected to. This DIP switch will always be set to OFF.

DIP switch 4 is used to tell the UPC controller the communication language of the building network. This should always be set to ON, unless the network uses BACnet over ARC156.

DIP switches 5-8 are used to set up the communication protocol. See Table 11 for settings.

NETWORK POINTS AND DESCRIPTIONS — The points list for the controller is shown in Table 12.

BP (AV:1)

— The BP (AV:1) parameter is a read-only value that shows the current building pressure from the building pressure sensor inside the ERV. This parameter is only applicable for a building pressure based mode of operation.

DCV CO2 INSIDE (AV:2) ing from the CO

sensor that is connected to the ERV. The CO

— This parameter shows the read-

sensor is only provided with the ERV when the ERV has been ordered with a CO2 based EzERV control scheme.

EAT SENSOR (AV:3), OAT SENSOR (AV:7), RAT SENSOR (AV:9), AND SAT SENSOR (AV:19) — These status points show the temperatures in all 4 quadrants of the ERV. The status points will only display values other than 0 if the ERV was ordered with temperature sensors.

EXHAUST AIR CFM (AV:5) AND OUTSIDE AIR CFM (AV:8) — These status points provide the airflow that each fan is moving if the ERV was ordered with the EzERV option. This option is an integrated airflow monitoring station.

EX FAN POS (AV:4) AND OA FAN POS (AV:6)

— The fan speed status points provide feedback on a scale of 0 to 100% to show the output of each fan.

REMOTE AIRFLOW CONFIGURATION MODE (AV:10) — This mode sets up the mode of operation for the ERV. The setting is associated with the control scheme the ERV was ordered with from the factory. The appropriate setting for this mode correlates with the last 3 characters of the part number on the ERV.

• For part number G-A, the mode is Offset Airflow Con-

trol (mode no. 1).

• For part number G-B, the mode is CO

Demand Control Ventilation with Offset Airflow Control

sensor based

(mode no. 2).

• For part number G-D, the mode is Building Pressure sen-

sor based Airflow Control (mode no. 3).

• For part number G-E, the mode is CO

sensor based

Demand Controlled Ventilation with Building Pressure sensor based Airflow Control (mode no. 4).

• If the ERV part number does not have "G-" in it then

mode no. 0 should always be used.

Table 11 — UPC Communication Protocol Settings (DIP Switches 5-8)

PROTOCOL

TYPE

BACnet MSTP (m) OFF OFF OFF OFF

BACnet MSTP (s) ON OFF OFF OFF

BACnet PTP OFF ON OFF OFF

N2 ON ON OFF OFF

Modbus OFF OFF ON OFF

LON SLTA ON OFF ON ON

LON Plugin OFFONONON

Ethernet ON ON ON ON

5678

DIP SWITCH

Page 31

Table 12 — Network Points List

BACNET

OBJECT ID

AV:1 BP R bp_1 AV:2 DCV_CO2_INSIDE R dcv_co2_inside_1 AV:3 EAT_SENSOR R eat_sensor_1 AV:4 EX_FAN_POS R ex_fan_pos_1 AV:5 EXHAUST_AIR_CFM R exhaust_air_cfm_1 AV:6 OA_FAN_POS R oa_fan_pos_1 AV:7 OAT_SENSOR R oat_sensor_1 AV:8 OUTSIDE_AIR_CFM R outside_air_cfm_1

AV:9 RAT_SENSOR R rat_sensor_1 AV:10 REMOTE_AIRFLOW_CONFIGURATION_MODE R/W remote_airflow_configeration_mode_1 AV:11 REMOTE_BP_SENSOR R/W remote_bp_sensor_1 AV:12 REMOTE_BP_SETPOINT R/W remote_bp_setpoint_1 AV:13 REMOTE_EXHAUST_OFFSET_SETPOINT R/W remote_exhaust_offset_setpoint_1 AV:14 REMOTE_MAX_CFM_SETPOINT R/W remote_max_cfm_setpoint_1 AV:15 REMOTE_MAX_DCV_VALUE_SETPOINT R/W remote_max_dcv_value_setpoint_1 AV:16 REMOTE_MIN_CFM_SETPOINT R/W remote_min_cfm_setpoint_1 AV:17 REMOTE_MIN_DCV_VALUE_SETPOINT R/W remote_min_dcv_value_setpoint_1 AV:18 REMOTE_SENSOR_DCV_VALUE R/W remote_sensor_dcv_value_1 AV:19 SAT_SENSOR R sat_sensor_1 AV:20 UPC_SOFTWARE_VERSION_STAT R upc_software_version_stat_1 AV:21 UPC_SOFTWARE_VERSION R upc_software_version_1 AV:22 EX_FILTER_BP R ex_filter_bp_1 AV:23 OA_FILTER_BP R oa_filter_bp_1 AV:24 REMOTE_EX_FILTER_BP_SETPOINT R/W remote_ex_filter_bp_setpoint_1 AV:25 REMOTE_OA_FILTER_BP_SETPOINT R/W remote_oa_filter_bp_setpoint_1 AV:26 MMC_MAIN_BOARD_SOFTWARE_VERSION R/W mmc_main_board_software_version_1 AV:27 REMOTE_EX_FAN_SPEED_SETPOINT R/W remote_ex_fan_speed_setpoint_1 AV:28 REMOTE_OA_FAN_SPEED_SETPOINT R/W remote_oa_fan_speed_setpoint_1 AV:29 ERV_VFD_WHEEL_POS R erv_vfd_wheel_pos_1 AV:30 REMOTE_VFD_WHEEL_SPEED_SETPOINT R/W remote_vfd_wheel_speed_setpoint_1

BV:1 ERV_2POS_DAMPER_STAT R erv_2pos_damper_stat_1 BV:2 ERV_EX_STAT R erv_ex_stat_1 BV:3 ERV_OA_STAT R erv_oa_stat_1 BV:4 ERV_WHEEL_STAT R erv_wheel_stat_1 BV:5 EX_BLOWER_ALARM R ex_blower_alarm_1 BV:6 EX_DIRTY_FILTER_ALARM R ex_dirty_filter_alarm_1 BV:7 FIX_WHEEL_ALARM R fix_wheel_alarm_1 BV:8 OA_BLOWER_ALARM R oa_blower_alarm_1

BV:9 OA_DIRTY_FILTER_ALARM R oa_dirty_filter_alarm_1 BV:10 OA_LOWCFM R oa_lowcfm_1 BV:11 REMOTE_BP_SENSOR_ENABLE R/W remote_bp_sensor_enable_1 BV:12 REMOTE_DCV_SENSOR_ENABLE R/W remote_dcv_sensor_enable_1 BV:13 REMOTE_ERV_DOWN_ENABLE R/W remote_erv_down_enable_1 BV:14 REMOTE_PWR_EXHAUST_ENABLE R/W remote_pwr_exhaust_enable_1 BV:15 REMOTE_START_STOP R/W remote_star t_stop_1 BV:16 REMOTE_WHEEL_BYPASS_ENABLE R/W remote_wheel_bypass_enable_1

POINT NAME

READ/ WRITE

BACNET

OBJECT NAME

REMOTE BP SENSOR (AV:11)

— This parameter is only applicable if the ERV is running in a building pressure based mode of operation and the parameter REMOTE BP SENSOR ENABLE (BV:11) is set to 1. If the parameter is set to 0, then the ERV will use the BP (AV:1) parameter. The ERV will modulate the exhaust fan to try to achieve the number that is set into REMOTE BP SETPOINT (AV:12).

REMOTE BP SENSOR SETPOINT (AV:12)

— This is the desired building pressure. The ERV will modulate the exhaust fan to try to achieve this set point. This parameter is only applicable for a building pressure based mode of operation. The ERV will use this value for its calculations if the REMOTE AIRFLOW CONFIGURATION MODE (AV:10) is not 0. If the REMOTE AIRFLOW CONFIGURATION MODE

(AV:10) is set to 0, then the ERV will use the value that has been loaded locally into the ERV control board.

REMOTE EXHAUST OFFSET SETPOINT (AV:13) This parameter is applicable when REMOTE AIRFLOW CONFIGURATION MODE (AV:10) is configured to 1 or 2. This will set the difference by which the exhaust airflow will follow the outside airflow. For example, if the demand control ventilation set points are telling the outdoor air fan to run at 4,000 cfm, and the REMOTE EXHAUST OFFSET SETPOINT (AV:13) is set to -1,000, then the exhaust fan will be running at 3,000 CFM.

REMOTE SENSOR DCV VALUE (AV:18)

— This parameter is also only applicable if the ERV is running in a CO mode of operation and the parameter REMOTE DCV SENSOR ENABLE (BV:12) is set to 1. If REMOTE DCV

—

based

Page 32

SENSOR ENABLE (BV:12) is set to 0, then the ERV will use the DCV CO2 INSIDE (AV:2) parameter. Any value can be written into this parameter.

The ERV will look at this parameter along with parameters: REMOTE MIN DCV VALUE SETPOINT (AV:17), REMOTE MAX DCV VALUE SETPOINT (AV:15), REMOTE MIN CFM SETPOINT (AV:16), and REMOTE MAX CFM SETPOINT (AV:14) to determine the settings for the ERV. These 4 remote set points will only be used if the REMOTE AIRFLOW CONFIGURATION MODE (AV:10) parameter is not 0. Otherwise the values that have been loaded locally into the ERV will be used.

EX FILTER BP (AV:22) AND OA FILTER BP (AV:23) These status points show the pressure drop across each air filter. This pressure drop is used to determine when the air filters are dirty. These numbers will always be 0 unless the ERV was ordered with this option.

REMOTE EX FILTER BP SETPOINT (AV:24) AND REMOTE OA FILTER BP SETPOINT (AV:25) — These set points are related to the dirty filter indicator option of the ERV. If the ERV has the dirty filter indicator option installed this parameter will set the trip point for which the ERV will give a dirty filter alarm. This number will be dependent on the airflow that the ERV is set to. The best way to determine the dirty filter set points is to use the unit status parameters called EX FILTER BP (AV:22) and OA FILTER BP (AV:23). With clean filters in the ERV, and the ERV running at its design conditions, note the values of the filter status parameters. Multiply those numbers by 1.5 and use them for the filter set points. These set points will overwrite the value that was set locally into the ERV. If this value is changed locally it will overwrite the value that was set remotely.

REMOTE EX FAN SPEED SETPOINT (AV:27) AND REMOTE OA FAN SPEED SETPOINT (AV:28) — These parameters allow for direct input to tell the fans how fast to run. The parameter needs to be set to a number between 1% and 100%. When this parameter is set to 0% the ERV’s internal control board will take control of the fans.

ERV WHEEL SPEED (AV:29) speed that the ERV heat exchanger wheel is running on a scale of 0 to 100%. If the ERV was not ordered with a variable frequency drive on the wheel this status will always read 100%.

REMOTE VFD WHEEL SPEED SETPOINT (AV:30) This parameter allows for the wheel rotation speed to be varied. This is often used to change the efficiency of the Energy Recovery Heat Exchanger Wheel to maintain a constant discharge temperature. This needs to be entered as a number that is between 1% and 100%. Entering 0% will put the wheel speed in automatic mode, and the ERV control board will take control. To turn off the wheel use the REMOTE WHEEL BYPASS ENABLE (BV:16) parameter.

ERV 2POS DAMPER STAT (BV:l) the ERV is commanding the two-position dampers to open. This status will update whether the ERV was ordered with twoposition dampers or not.

ERV EX STAT (BV:2) AND ERV OA STAT (BV:3) These status points output a logic 1 to show when the fan is ON.

ERV WHEEL STAT (BV:4) tus shows whether or not the ERV heat exchange wheel is running.

ERV EX BLOWER ALARM (BV:5) AND ERV OA BLOWER ALARM (BV:8) — These alarms indicate a catastrophic failure of a blower in the ERV. The alarms can also indicate a missing leg of incoming power, over voltage, under voltage or extremely dirty incoming power to the ERV. These alarms will never go active if the ERV was not ordered with the blower alarm options.

— This status shows the

— This status shows if

— The ERV WHEEL STAT sta-

—

FIX WHEEL ALARM (BV:7) the ERV heat exchange wheel is not turning when it is supposed to be turning. This alarm will never go active if the ERV was not ordered with this alarm option.

EX DIRTY FILTER ALARM (BV:6) AND OA DIRTY FILTER ALARM (BV:9) — This alarm indicates that the air filters in the ERV need to be changed. These alarms are related to parameters REMOTE EX FILTER BP SETPOINT (AV:24) and REMOTE OA FILTER BP SETPOINT (AV:25). The set points determine when the ERV is going to give a dirty filter alarm. This alarm will never go active if the ERV was not ordered with the dirty filter alarm options.

OA LOW CFM (BV:10) desired outside air CFM set point is not being met. The alarm will only trip if the desired outside air CFM set point has not been satisfied for 5 minutes.

REMOTE BP SENSOR ENABLE (BV:11) eter is set to OFF the ERV will use the building pressure reading off of the sensor inside the ERV. If the parameter is set to ON, the ERV will use the building pressure value that is being written in parameter REMOTE BP SENSOR VALUE.

REMOTE ERV DOWN ENABLE (BV:13) ter is another start/stop command for the ERV. Turning this parameter to 1 will shut the ERV down. Unlike the REMOTE START STOP (BV:15) parameter, it is not dependant on the REMOTE AIRFLOW CONFIGURATION MODE (AV:10) parameter.

REMOTE PWR EXHAUST ENABLE (BV:14) rameter puts the ERV into a power exhaust mode that is usually used in conjunction with the economizer of the rooftop unit. The power exhaust mode turns off the wheel and the outside air blower. The exhaust blower will continue to run at its current set point. Setting this parameter to 1 will put the ERV into power exhaust mode.

REMOTE START STOP (BV:15) the user to turn on/off the ERV. Setting this parameter to 1 will turn the ERV ON. The REMOTE START STOP works in conjunction with the start/stop contact on the ERV field terminal strip if the REMOTE AIRFLOW CONFIGURATION MODE (AV:10) is set to 0. If the REMOTE AIRFLOW CONFIGURATION MODE (AV:10) is not set to 0, then the REMOTE START STOP parameter will override the field terminal strip.

REMOTE WHEEL BYPASS ENABLE (BV:16) this parameter to 1 will turn off the ERV heat exchange wheel. This mode is normally used to disable the wheel when free cooling is available.

— This alarm indicates that

— This alarm becomes active if the

— If this param-

— This parame-

— This pa-

— This parameter allows

— Setting

SERVICE

CAUTION

Disconnect electrical power before servicing energy recovery cassette. Failure to do so could result in personal injury.

Removing and Installing Non-Segmented Wheel for Cleaning (62EB,E7 Units) —

ergy transfer wheels are secured to the shaft and bearing support beam by a Phillips head screw and hub cover. See Fig. 30.

To remove the energy transfer wheel, follow Steps 1-4

below. (See Fig. 30.) 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

Non-segmented en-

Page 33

engages the notch at the end of the shaft when reinstalling

Fig. 30 — 62EB and 62E7 Energy

Transfer Wheel Assembly

A62-279ef

Fig. 31 — 62ECC and 62E2C Energy

Transfer Wheel Assembly

Fig. 32 — Unlocking the

Segment Retaining Brackets

A62-278ef

the wheel.

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

Removing and Installing Non-Segmented Wheel for Cleaning (62ECC and 62E2C Units) — Non-segmented energy transfer wheels include

the shaft and are secured to 2 wheel support beams by 2 flange bearings with locking collars. See Fig. 31.

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.

Alignment

Cassette Housing/Frame

Shaft

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

4. Loosen the 2 set screws on each of the 2 wheel bearings. See Fig. 31.

CAUTION

When replacing wheel, retighten the 4 bearing set screws. Premature bearing failure could result.

Removing Wheel Segments for Cleaning (62ECD, 62ED-EU, 62E2D, and 62E3-E6 Units)

1. Unlock and open the segment retaining brackets on both sides of the selected segment opening. Refer to Fig. 32.

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.

To install the segments, see the Installing Wheel Segments

section.

Hub Cover

FLANGE BEARINGS (2)

Wheel & Hub

WHEEL, HUB & SHAFT

WHEEL SUPPORT BEAMS

Bearings (2)

SET SCREWS (2) EACH

Installing Wheel Segments

WARNING

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.

CAUTION

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. 33.

Page 34

HAMMER

Fig. 33 — Using a Stop on the Wheel

A62-280ef

Fig. 34 — Inserting a Segment of the Wheel

A62-281ef

Imbedded Stiffeners

Fig. 35 — Motor Side View of Segment

A62-282ef

CATCH

PULL TAB

Fig. 36 — Latch Segment Retaining Brackets

A62-283ef

USED AS “STOP”

NOTE: The 62EBA, 62EBC, 62ECC, 62E7A, 62E7C, and 62E2C 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. 34.

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. 35.

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. 36. 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 2 installed segments rotated to the horizontal position to balance the weight of installed segments. Continue this sequence with the remaining segments.

Wheel Drive Motor and Pulley Replacement (62EC-EU and 62E2-E6 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. 37 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 2 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 2 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.

CAUTION

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. 38.

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. 38 shows belt partially through the opening).

Page 35

6. Reinstall the bearing onto the wheel shaft, being careful

Wheel Drive Motor

Insulation

Seal Plate

Pulley

Dimension A

Fig. 37 — Pulley Location

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

A62-284ef

62E UNIT SIZE ERV WHEEL

WHEEL MODEL

NUMBER

DIMENSION A

mm in.

B,7

A ERC-1904 3.2 1/8 C ERC-1906 6.4 1/4

C,2

C ERC-2509 6.4 1/4 D ERC-2510C 3.2 1/8 G ERC-2513C 3.2 1/8

D,3

D ERC-3014C 3.2 1/8 G ERC-3019C 3.2 1/8

E,4

B ERC-3615 6.4 1/4 D ERC-3622 6.4 1/4 F ERC-3623 6.4 1/4 G ERC-3628 6.4 1/4

H,5

B ERC-5230 9.5 3/8 D ERC-5248 9.5 3/8 F ERC-5245 9.5 3/8 G ERC-5262 9.5 3/8

K,6

D ERC-6475 11.1 7/16 G ERC-6488 11.1 7/16

D ERC-6876 11.1 7/16 G ERC-68100 11.1 7/16

D ERC-7490 11.1 7/16 G ERC-74122 11.1 7/16

D ERC-81110C 11.1 7/16 G ERC-81146C 11.1 7/16

D ERC-86125C 11.1 7/16 G ERC-86170C 11.1 7/16

D ERC-92135C 11.1 7/16 G ERC-92180C 11.1 7/16

D ERC-99160C 11.1 7/16 G ERC-99215C 11.1 7/16

D ERC-104195C 11.1 7/16 G ERC-104250C 11.1 7/16

D ERC-110220C 11.1 7/16 G ERC-110290C 11.1 7/16

to engage the 2 locating pins into the holes in the bearing support beam. Secure the bearing with 2 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.

Removing the Service Door — To open the cabinet,

turn the eight ¼-turn latches counter clockwise. With a hand on each handle of the door, carefully pull the door straight out.

Replacing a Blower (All ERV Cabinets Except 62EB and 62E7 Units)

EXHAUST SIDE — Turn off power to the unit. Remove all screws from the top panel on the exhaust side of the ERV. Be sure to remove the screws on the center seam. Pry the top panel up from its gasket seat, being careful not to bend the lid. Remove the cover from the blower motor and note the location of

all the wires. Disconnect the wiring from the terminals. Remove all the P-clips, wire ties, and hoses that will keep the blower assembly from lifting out. Remove all the bolts that hold the blower assembly in the ERV unit. Carefully lift the blower assembly from its mounting plate.

NOTE: When removing 500 mm and 630 mm blowers it is helpful to get assistance because of the blower's size and weight.

Follow these instructions in reverse order to install the new

blower. SUPPLY SIDE — Turn off the power to the unit. Remove the

intake air hood (if equipped). Remove all of the screws from the top panel on the supply side of the ERV. Be sure to remove the screws on the center seam. Pry the top panel up from its gasket seat, being careful not to bend the lid. Remove the service doors on both sides and remove the filters or filter racks on the supply side. Remove the cover from the blower motor and note the location of all the wires. Disconnect the wiring from the terminals.

NOTE: Push the wheel out from underneath the blower that is being disconnected for more room to work.

Remove all of the P-clips, wire ties, and hoses that will keep the blower assembly from lifting out. Remove all of the bolts that hold the blower assembly in the ERV unit. Carefully lift the blower assembly from its mounting plate.

NOTE: When removing 500 mm and 630 mm blowers it is helpful to get assistance because of the blower's size and weight.

Follow these instructions in reverse order to install the new blower.

Page 36

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)

Shaft

PULL

FEED

Pulley Side

Motor Side

Belt

Locating Pin

Drift Hole

Set Screw

Retaining Screws

Fig. 38 — Belt Replacement (Diameter Seals Removed)

A62-285ef

Replacing a Blower (62EB and 62E7 Units)

EXHAUST OR SUPPLY SIDE — Turn off the power to the unit. Remove all of the screws from the top panel. Pry the top panel up from its gasket seat, being careful not to bend the lid. Disconnect plug from the blower. Remove all of the P-clips, wire ties and hoses that will keep the blower assembly from lifting out. Remove all of the screws holding the blower in the ERV unit and remove the blower. Follow these instructions in reverse order to install the new blower.

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

MAINTENANCE

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.

CAUTION

Do not use acid based cleaners, aromatic solvents, steam or temperatures in excess of 76.7 C (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 See Fig. 39. Rotate wheel clockwise until 2 opposing spokes are hidden behind the bearing support beam. Using a folded piece of paper

Page 37

as a feeler gage, position paper between the wheel surface and

Fig. 39 — Diameter Seal Adjustment

A62-286ef

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.

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 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.

Rotation

To Adjust

Air Filters — With this ERV unit and with most other

forced air heating, cooling and ventilation systems, regular air filter maintenance is of utmost importance. Proper filter maintenance will improve indoor air quality, keep the building airhandling system clean for peak efficiency, and prolong the life of the HVAC (Heating, Ventilation, and Air Conditioning) equipment. The life of the air filters is directly related to the application to which the ERV unit is installed. The air filters should be inspected every couple of weeks until a maintenance schedule is established. The ERV unit is equipped from the factory with throwaway filters, however if the installer changed the filter type, consult the installer for filter maintenance instructions.

Replacing the Throwaway Filters — After remov-

ing the service door (see Removing the Service Door section) remove the spacer plugs and pull the filters or filter racks out of the cabinet. Replace the filters with the original equipment manufacturer replacements or equivalents. Refer to Tables 1A and 1B for filter sizes.

Adjusting Screws

Feeler Gage

Page 38

TROUBLESHOOTING

See Table 13 for troubleshooting information.

Table 13 — ERV Troubleshooting

SYMPTOM POSSIBLE CAUSES ACTION TO CHECK POSSIBLE REMEDY

ERV will not turn on

ERV is running but blowers will not turn

Only one of the two blowers is turning

Blowers are on but the wheel is not turning

Disconnect switch is in the off position

No power to the ERV

One or more blown fuses

Control board transformer circuit breaker is tripped

The fan speed / CFM level is set too low

One or more blown fuses

Rooftop Economizer Option (if equipped) has shut down the ERV because the rooftop unit is in 'Free Cooling' mode

Smoke Detector Option (if equipped) has shut down the ERV because it is sensing smoke in the exhaust airstream on the ERV.

Low Temperature Lockout Option (if equipped)

The fan speed / CFM level is set too low

Rooftop Economizer with Power Relief Option (if equipped) has shut down the supply blower because the rooftop unit is in 'Free Cooling' mode

One of the blowers is wired incorrectly

The ERV Standard Frost Protection Option has turned off the supply blower to defrost the wheel

The ERV Enthalpy Control, Dry bulb Control / Wheel Bypass Stop / Jog Option (if equipped) is activated

The wheel motor is unplugged.

The wheel motor is wired incorrectly.

The wheel belt is off or broken Check the wheel belt.

The air seals on the wheel are too tight

Verify that the disconnect switch is in the 'ON' position

Check for power at the disconnect switch

Check for power at the bottom of the fuse block

Look at the small transformer next to the control circuit board to see if the black circuit pushed out

Use the user interface push button to view the 'Outside Air' and 'Exhaust Air' settings

Check for power at the bottom of the fuse block

Check for continuity across the mercury switch on the economizer damper.

Check for wiring errors.

Check to see if the outside temperature is above –30 F (–34.4 C). Check for wiring errors

Use the user interface push button to view the 'Outside Air' and 'Exhaust Air' settings

Check for continuity across the mercury switch on the economizer damper

Check for wiring errors.

Check for frost on the wheel. Wait for Defrost mode to finish.

Check for Stop / Jog movement of wheel.

Check to see if the connector between the wheel motor and the cabinet wiring is securely connected.

Check for wiring errors.

Check to see if the wheel spins freely.

Move the disconnect lever to the 'ON' position.

Using a volt meter verify that the voltage being supplied to the ERV matches the ERV's operating voltage. If the ERV operates on three phase power check all three legs.

Using a volt meter verify that the voltage on the bottom side of the fuse block matches the ERV's operating voltage. If the ERV operates on three phase power check all three legs.

Depress the circuit breaker back in.

Adjust the fan speed / CFM demand levels by pressing the user interface push button and turning the adjust knob.

Using a volt meter verify that the voltage on the bottom side of the fuse block matches the ERV's operating voltage. If the ERV operates on three phase power check all three legs.

Using a continuity meter check for continuity across the two wires that connect to the mercury switch on the economizer damper. If the contacts are open, the rooftop unit is in 'Free Cooling'.

Using the wiring schematics verify that the smoke detector is wired to the control board properly.

Use a thermometer to measure the outside temperature. Use the wiring schematics to verify that temperature probe on the intake air side of the ERV is wired properly.

Adjust the fan speed / CFM demand levels by pressing the user interface push button and turning the adjust knob.

Using a continuity meter check for continuity across the two wires that connect to the mercury switch on the economizer damper. If the contacts are open, the rooftop unit is in 'Free Cooling'.

Using the wiring schematics verify that both the power wires and the control wires are connect properly.

Wait until sequence is completed.

Plug the two connectors together.

Compare the wheel motor, control board and relay are wired correctly.

Verify that the wheel belt is seated in the pulley and on the rim of the wheel.

Carefully rotate the wheel by grabbing the outer rim and spinnig the wheel. After letting go the wheel should continue to spin for three to four seconds. Should the air seals need adjusting see the maintainence section of this book.

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 38 8-10 Replaces: New

Page 39

Page 40

START-UP CHECKLIST

I. PROJECT INFORMATION:

Job Name ____________________________ Start-Up Performed By __________________ ERV Unit Designation __________________ Date __________________________________ Phone Number ________________________

II. DESIGN INFORMATION:

Application ___________________________________________________________________________ CFM (Supply/Exhaust) _________________________________________________________________ External Static Pressure (Supply/Exhaust) __________________________________________________ Supply/Exhaust Configuration ____________________________________________________________ Voltage/Phase ________________________________________________________________________ ERV Unit Part Number _________________________________________________________________ Coupled to RTU or stand-alone ___________________________________________________________

Specify RTU. NOTE: Complete This Section for Coupled Applications Only

Model Number ________________________________________________________________________ HVAC Unit Discharge Type (Down discharge or horizontal discharge.) ____________________________

Roof Curb (Option) Yes No

14-in. Tall Roof Curb (Field Installed) Horizontal Supply/Return Base (Field Installed) Combination ERV-RTU Curb (Field Installed)

Horizontal Transition NOTE: Complete This Section for Coupled Applications Only.

Transition Part Number (Field Installed)

Electrical Disconnect (Option) Yes No

Fused (Factory Installed) Switched (Factory Installed)

Two-Position Motorized Dampers (Option) Yes No

Outside Air Damper (Factory Installed) Exhaust Air Damper (Factory Installed)

Pre-Heater (Option) Yes No

kW _______________ Temp Control (Factory Installed) Temp and Static Pressure Control (Factory Installed)

Frost Protection (Option) (Factory Installed) NOTE: Do Not Use With Pre-Heater.

Yes No

ERV Wheel VFD (Option) (Factory Installed) Yes No

Low Temperature Lock Out (Option) (Factory Installed) Yes No

Filter Maintenance Indicator (Option) (Factory Installed) Yes No

ERV Blower Maintenance Indicator (Option) (Factory Installed) Yes No

ERV Wheel Maintenance Indicator (Option) (Factory Installed) Yes No

Field-Installed Accessories Yes No

ERV Remote Mount Timer (Field Installed) ERV Remote Control Readout (Field Installed)

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 CL-1 8-10 Replaces: New

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - -

Carrier 62E User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual