Greenheck Fan ERV manual Selection Guidelines, Motor Specifications, MCA Example Calculation

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Selection Guidelines

Motor Specifications

Blower motor information must be specified to select unit. The horsepower, voltage, phase and enclosure availability is presented

in the table on the right. If exhaust and supply blower horsepower are different, consult the CAPS program.

Model

 

Open

 

 

TE

Two Speed Open

 

 

 

 

 

 

 

 

115/1

230/1

230/460/3

230/1

230/460/3

230/1

230/460/3

 

 

 

 

 

 

 

 

 

 

ERV-251S*

1⁄4

1⁄4

 

-

-

-

-

-

ERV-251H*

1⁄2

1⁄2

 

-

-

-

-

-

ERV-361*

-

1⁄4 - 2

1⁄4 - 2

1⁄4 - 2

1⁄4 - 2

1⁄2 - 1

1⁄2 - 11⁄2

ERV-521*

-

1⁄2 - 3

1⁄2

- 5

1⁄2 - 11⁄2

1⁄2 - 5

1⁄2 - 1

1⁄2 - 3

ERV-581*

-

-

1 - 5

-

1 - 5

-

1 - 3

 

 

 

 

 

 

 

 

 

ERV-522*

-

11⁄2 - 3

11⁄2

- 15

11⁄2

1 - 15

-

1 - 71⁄2

ERV-582*

-

-

11⁄2

- 15

-

1 - 15

-

1 - 71⁄2

UL Listing is available on most open drip proof motors.

*Energy wheel drive motor is only available with open drip proof motors.

Minimum Circuit Amps (MCA) Calculations for ERV Units

Wheel drive, 24 volt internal control amp and standard electric preheat kW. Single or three phase ERV units

 

Wheel Drive Amps

24v

 

 

Standard Electric Preheat kW

 

Model

 

 

 

Control

 

 

 

 

 

 

 

115

208/230

460

115/1

208/1

230/1

208/3

230/3

 

460/3

 

 

 

 

Amps

 

 

 

 

 

 

 

ERV-251

0.6

0.6

NA

0.5

2.5

2.1, 4.1

2.5, 5

NA

NA

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

ERV-361

NA

1.2

0.6

1

NA

NA

NA

4.1, 8.2, 12.3

5, 10, 15

 

5, 10, 15

 

 

 

 

 

 

 

 

 

 

 

 

ERV-521

NA

2.8

1.4

1

NA

NA

NA

8.2, 12.3,

10, 15, 19

 

10, 15, 20, 25, 30

15.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ERV-581

NA

1.6

0.8

1

NA

NA

NA

12.3, 15.5

15, 19

 

15, 20, 25, 30, 38

 

 

 

 

 

 

 

 

 

 

 

 

ERV-522

NA

5.6

2.8

1

NA

NA

NA

15.5

19

 

20, 25, 30, 45

 

 

 

 

 

 

 

 

 

 

 

 

ERV-582

NA

3.2

1.6

1

NA

NA

NA

15.5, 24.5

19, 30

 

20, 38, 50

 

 

 

 

 

 

 

 

 

 

 

 

NA = not available

MCA Example Calculation

Greenheck ERV selected: ERV-361S-B, 2 hp supply motor, 11⁄2 hp exhaust motor, 15kW preheater operating at 460 volt, three phase.

Step 1: Consult NEC table (not shown) for 2 hp supply motor amps = 3.4 A

Step 2: Consult NEC table (not shown) for 11⁄2 hp exhaust motor amps = 2.6 A

Step 3: Calculate 15kW preheater amp draw = 15,000W/ [460 * 3 ] = 18.8 A

If no preheater is used skip step 3

Step 4: Wheel drive amps for ERV-361 from table above = 0.6 A

Step 5: 24v Control Amps for ERV-361 from table above = 1.0 A

Step 6: MCA = Amperage total from steps 1 thru 5 x 1.25

MCA = (3.4 + 2.6 + 18.8 + 0.6 + 1.0)

1.25 = 33 A

Filter Pressure Drop

 

 

Intake Hood

Pleated

 

 

with 2-inch

Model

CFM

2-inch

aluminum

 

 

filters

 

 

filters

 

 

 

ERV-251

500

0.09

0.09

1,000

0.32

0.19

 

ERV-361

1,000

0.09

0.10

2,200

0.45

0.28

 

ERV-521

2,500

0.13

0.14

4,500

0.45

0.32

 

ERV-581

4,500

0.17

0.15

5,500

0.30

0.24

 

ERV-522

6,000

0.15

0.14

9,000

0.40

0.25

 

ERV-582

9,000

0.13

0.16

12,000

0.45

0.27

 

Note: Calculations are approximate, use our Computer Aided Product Selection (CAPS) program for exact MCA calculations.

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Contents Energy Recovery Ventilator Model ERV Design FeaturesAdditional Features How does an energy recovery wheel work? What is the Benefit with Greenheck Energy Recovery? Year Warranty CSI SpecificationsEasy Installation Adhering to Ashrae GuidelinesAccessories Rotation Sensor Service OutletDirty Filter Sensors Factory Mounted SensorsEconomizer Control Free Cooling Frost ProtectionArrangements Dimensions ERV-251, ERV-361, ERV-521, ERV-581ERV-522 and ERV-582 ERV-582HPerformance Supply and Exhaust Belt and Direct DriveSupply and Exhaust Belt Drive Model ERV-521 Model ERV-522 Model ERV-581 Model ERV-582Minimum Circuit Amps MCA Calculations for ERV Units Motor SpecificationsSelection Guidelines MCA Example CalculationWith Packaged Rooftop Equipment Typical ApplicationsWith Ducted Air Handlers Greenheck’s Energy Recovery Models

ERV specifications

Greenheck Fan's Energy Recovery Ventilator (ERV) represents a significant advancement in the field of indoor air quality and energy efficiency. These systems are designed to provide balanced ventilation while recovering energy from exhaust air, making them an ideal choice for commercial and industrial applications.

One of the main features of the Greenheck ERV is its energy recovery core, which effectively transfers heat and moisture between the incoming and outgoing airstreams. This technology allows for a significant reduction in heating and cooling costs by pre-conditioning the incoming air, resulting in less strain on HVAC systems. The core is engineered for high efficiency, delivering seasonal energy savings and contributing to LEED certification for green buildings.

Another notable characteristic of the Greenheck ERV is its versatility. The units come in various sizes and configurations to meet different building specifications and ventilation requirements. They are suitable for a wide range of applications, from schools and offices to hospitals and industrial spaces. Users can customize the ERV to suit specific needs, including options for enhanced filtration, integrated controls, and multiple airflow configurations.

The construction quality of Greenheck ERVs is also commendable. They feature robust materials that ensure long-lasting performance and durability, even in demanding environments. The units are designed to withstand harsh outdoor conditions, making them reliable for year-round operation. Furthermore, the noise levels are minimized thanks to their well-engineered design, providing a comfortable indoor environment free of distracting sounds.

Greenheck has incorporated advanced controls and monitoring technologies into its ERV systems. This feature allows users to track performance, optimize energy use, and maintain indoor air quality. The controls can be integrated with building management systems for seamless operation. Moreover, the units are designed for ease of maintenance, with accessible components that simplify servicing and repairs.

In summary, Greenheck Fan's Energy Recovery Ventilator combines energy efficiency, versatility, and advanced technology to deliver exceptional indoor air quality solutions. Its energy-recovery capabilities, adaptability to various applications, durable construction, and advanced controls position it as a leading choice in the market for energy recovery and ventilation solutions.
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