FAN BLADE SETTING DIMENSIONS

REFRIGERANT CHARGE

Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions in Table 7 be checked and blade adjusted in or out of the motor shaft accordingly.

FIGURE 26

FAN BLADE SETTING

TABLE 7

FAN BLADE DIMENSIONS

 

DIMENSION A

MODEL

(INCHES)

 

 

QH243

.750

QH302

.750

QH362

.750

QH422

.750

QH482

.750

QH602

.750

The correct system R-22 charge is shown on the unit rating plate. Optimum unit cooling performance will occur with a refrigerant charge resulting in a Super Heat as shown in Table 8. If correct charge is in doubt, recover the refrigerant and recharge per the charge on the unit rating plate.

TABLE 8

SUPER HEAT AT COMPRESSOR

Model

Rated

95° OD

82° OD

CFM

Temperature

Temperature

 

 

 

 

 

 

QH243

800

16

- 18

14 - 16

 

 

 

 

 

QH302

1000

16

- 18

15 - 17

 

 

 

 

 

QH362

1200

16

- 18

14 - 16

 

 

 

 

QH422

1200

19 - 21

16 - 18

 

 

 

 

 

QH482

1400

23

- 25

22 - 24

 

 

 

 

 

QH602

1550

7

- 9

13 - 15

 

 

 

 

 

TABLE 9

INDOOR BLOWER PERFORMANCE

 

 

 

1

2

3

4

 

 

 

 

 

 

Optional

Continuous

CFM @

Model

 

Rated ESP

Max. ESP

Rated CFM

CFM

CFM

Max. ESP

 

 

 

 

 

 

 

 

QH243

5

.10

0.5

800

 

800

700

 

 

 

 

 

 

 

 

QH302

 

.15

0.8

1000

 

1000

910

 

 

 

 

 

 

 

 

QH362

 

.15

0.8

1200

1000

1000

1175

 

 

 

 

 

 

 

 

QH422

 

.15

0.8

1200

1000

1000

1175

 

 

 

 

 

 

 

 

QH482

 

.15

0.8

1400

1100

1100

1175

 

 

 

 

 

 

 

 

QH602

 

.20

0.5

1550

1250

1250

1400

 

 

 

 

 

 

 

 

NOTE: These units are equipped with a variable speed (ECM) indoor motor that automatically adjust itself to maintain approximately the same rate of indoor airflow in both heating and cooling, dry and wet coil conditions and at both 230/208 or 460 volts.

1 Maximum ESP (inches WC) shown is with 1" thick disposable filter (reduced by .2 for 2" filter).

2 Rated CFM for ducted applications – required for maximum performance rating. To obtain full CFM on models QH362, QH422, QH482 and QH602 connect the pink jumper wire (provided) to terminal #G2 and #Y on the low voltage terminal block located in the circuit breaker box.

3 Optional CFM – the unit is shipped from the factory set to operate at the optional CFM level shown. This provides lower operating sound levels for non-ducted, free discharge applications. This reduces system capacity performance by approximately 2% at the same energy efficiency.

4 Continuous fan CFM is the total air being circulated during continuous fan mode.

5 Model QH243 – when operating on 2nd stage heating the indoor air will increase to 1000 CFM.

Manual

2100-420H

Page

32 of 34

Page 32
Image 32
Bard QH482, QH243, QH602, QH422 FAN Blade Setting Dimensions Refrigerant Charge, FAN Blade Setting FAN Blade Dimensions

QH482, QH243, QH302, QH422, QH602 specifications

Bard has established itself as a leader in the heating, ventilation, and air conditioning (HVAC) industry with its innovative line of products, including the Bard QH series. Models such as QH362, QH602, QH422, QH302, and QH243 showcase the perfect blend of performance, efficiency, and advanced technology.

The Bard QH362 is built for both affordability and efficiency, making it ideal for smaller commercial spaces. This model offers a cooling capacity of 36,000 BTUs, providing optimal comfort with minimal energy consumption. Its robust design ensures long-lasting performance, while the air-cooled condenser enhances reliability in various climates.

The QH602 model takes it a step further with enhanced cooling capabilities, boasting a 60,000 BTU rating. This unit is particularly well-suited for larger commercial applications. Its advanced heat pump technology allows for efficient heating and cooling, ensuring indoor comfort year-round. The QH602 features a user-friendly control system that optimizes energy use and simplifies operation.

Next up, the QH422 model is designed for mid-sized commercial environments, offering 42,000 BTUs of cooling power. This model is distinguished by its energy-efficient design, significantly reducing operational costs while maintaining high-performance levels. The QH422 includes a smart thermostat that allows users to monitor and adjust settings remotely, further enhancing energy management.

The QH302 model is perfect for businesses looking for a balance between power and efficiency. With a capacity of 30,000 BTUs, this unit effectively meets the needs of medium-sized spaces. Its compact design allows for easy installation and maintenance, making it a favorite among commercial property managers.

Lastly, the QH243 model rounds out the series with a 24,000 BTU capacity, ideal for smaller commercial applications. This model showcases Bard's commitment to energy efficiency, equipped with environmentally friendly refrigerants and advanced insulation materials that minimize energy loss.

These Bard models feature innovative technologies such as variable-speed fans, which ensure consistent airflow regardless of outdoor conditions. Additionally, noise-reduction technologies provide a quieter operation, creating a more pleasant indoor environment.

In summary, the Bard QH series, including the QH362, QH602, QH422, QH302, and QH243, offers a comprehensive range of HVAC solutions tailored to diverse commercial needs. With their efficient designs, advanced technology, and focus on reliability, these models set the standard for modern heating and cooling equipment.