METHODS TO SIZE HRV’S

METHOD 1

1.Calculate cu ft of occupied space.

2.Multiply by recommended air changes per hr (AC/h).

3.Divide by 60 minutes per hr to convert to CFM.

EXAMPLE: 2000 sq ft with 8 ft ceiling 0.35 air changes per hr (AC/h)

(2000 sq ft x 8 ft ceiling x 0.35 AC/h) / 60 min/h = 93.3 CFM

METHOD 2

1.Multiply number of people times 15 CFM/person.

2.Multiply number of bath rooms 20 CFM/each.

3.Add 25 CFM for kitchen.

EXAMPLE: 2 people

2baths

1kitchen

(2 x 15) + (2 x 20) + 25 = 95 CFM

ADDITIONAL HEATING AND COOLING LOAD CHARTS

Although the ventilators process the outside air before it enters the home, additional heating and cooling loads need to be considered.

HEATING LOAD BTU

Outside

 

 

Heat Load (Btuh) @ Inside Design Temp 72°F

 

 

Temp °F

HRVBBLHU1150

HRVBBSVC1250

HRVBBSVC1150

HRVBBSVC1200

HRVBBLVU1150

HRVBBLVU1200

HRVBBLVU1330

–25

4,688

8,165

6,970

7,690

5,500

6,650

9,990

–20

4,466

7,744

6,470

7,090

5,030

6,070

9,310

–15

4,598

8,008

5,990

6,520

4,590

5,510

8,650

–10

4,334

7,547

5,520

5,970

4,160

4,970

8,000

–5

4,069

7,087

5,070

5,440

3,750

4,470

7,380

0

3,805

6,627

4,550

4,840

3,300

3,910

6,640

5

3,541

6,167

4,130

4,360

2,940

3,470

6,060

10

3,502

6,100

3,730

3,900

2,600

3,050

5,500

15

3,220

5,608

3,290

3,400

2,240

2,600

4,870

20

2,938

5,116

2,930

3,000

1,940

2,240

4,350

25

2,950

5,138

2,580

2,610

1,670

1,910

3,850

30

2,636

4,591

2,240

2,250

1,410

1,600

3,370

35

2,322

4,045

1,900

1,880

1,160

1,300

2,870

40

2,009

3,498

1,600

1,560

940

1,040

2,430

The heating load chart shows the heating loads in Btuh for a range of winter design temperatures for each model of ventilator.

EXAMPLE: The heating design temperature for Milwaukee, WI is –4°F. At –5°F, the additional heating load of the HRVBBLHU1250 is 8417 Btuh. This additional load should be taken into consideration when sizing the heating equipment.

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Bryant HRVBBSVC, HRVBBLHU manual Methods to Size HRV’S, Heating Load BTU, HRVBBLVU1150
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HRVBBLVU, HRVBBSVC, HRVBBLHU specifications

The Bryant HRVBBB series, comprising the HRVBBLHU, HRVBBLVU, and HRVBBSVC models, represents a significant advancement in the realm of residential heat recovery ventilation systems. Designed to enhance indoor air quality while optimizing energy efficiency, these units cater to a variety of home sizes and layouts, ensuring that residents can enjoy a comfortable living environment year-round.

One of the standout features of the HRVBB series is its heat recovery mechanism. These units effectively capture heat from outgoing stale air and transfer it to incoming fresh air, reducing the energy required for heating or cooling. This process not only decreases utility costs but also promotes an environmentally friendly approach to indoor climate control. The use of high-efficiency counterflow heat exchangers ensures maximum heat transfer, allowing homeowners to benefit from significant energy savings.

In terms of operational characteristics, the HRVBB models are equipped with variable speed motors that allow for customizable airflow settings. This flexibility means that users can adjust the system to meet their specific ventilation needs, whether it’s a larger gathering or routine everyday living. Quiet operation is another highlight; the Bryant HRVBB series has been designed to minimize noise, ensuring that comfort isn’t compromised by disruptive sounds.

Additionally, user-friendly controls are a key feature. The units support easy integration with smart home systems, enabling remote monitoring and adjustments via smartphones or tablets. This connectivity allows homeowners to operate their ventilation systems efficiently, even when they're not at home.

The durability and build quality of Bryant products are well-regarded, and the HRVBB series is no exception. Constructed with high-grade materials, these units are designed to withstand the rigors of everyday use while maintaining optimal performance levels.

In conclusion, the Bryant HRVBBLHU, HRVBBLVU, and HRVBBSVC ventilation systems exemplify modern heating and ventilation technologies. With their focus on energy efficiency, customizable operation, and superior air quality management, these units not only meet the demands of contemporary living but also contribute to a healthier indoor environment. Whether it’s for a family home or a compact living space, the HRVBB series stands out as a reliable choice for homeowners looking to enhance comfort while being energy-conscious.
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