Bryant 548D installation instructions Durablade Economizer Damper Minimum Position Setting

Page 14

Example:

 

 

OAT

Given —

 

 

Negative Pressure

0.1 in. wg

TOP

(TERMINALS ARE UP)

Outdoor Airflow

1100 cfm

 

 

Determine —

 

 

 

Setting = 6

 

 

 

Fig. 17 — Durablade Economizer Damper

Minimum Position Setting

UNIT

OUTSIDE AIR

SCREEN

0

1

2

3

4

5

6

7

8

9

ENTHALPY CONTROL

HOOD

 

OPEN

 

 

 

POSITIONMINIMUM

 

 

 

 

 

 

 

 

S

 

 

 

 

T

 

3

 

 

1

 

 

 

 

 

 

 

P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T1

 

4

 

 

2

 

 

5

 

 

 

 

P1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T ID

 

 

 

 

8 S

CONT

U

CONT

 

 

 

 

 

 

 

 

 

 

%

 

1 R

 

OR

 

 

 

 

 

 

Y

 

 

IMUH

 

9 U

 

 

 

 

 

 

 

 

 

 

 

70

90

 

8 H

ACT

NPOWERED

A

 

 

 

 

 

 

30

60

 

 

8

C

CTS

3

 

2

ENTHALPY

 

 

 

 

T

 

 

 

 

60

 

DAMPER

 

 

1

A

5A

TE

 

2

 

 

 

 

 

 

 

 

m

 

 

 

 

10

 

 

 

 

D

CW

A

2

RA

 

SHO

 

TR

 

 

50

 

 

 

 

C

–

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

TINGS:

 

 

 

 

 

 

OUTDOOR

65

 

 

 

 

 

SETPOINTS

 

M

ST

HIGH

 

 

C

 

 

55

 

OPEN

 

 

B

 

 

 

 

 

WN

 

 

A

 

 

 

 

 

 

 

 

 

3 .

 

 

 

 

4V

 

 

75

 

 

 

 

A

 

 

VDC

1

A

IN

 

 

 

CONTROL

F

 

 

 

CLOSED DAMPER

 

 

 

 

 

1

TR1

 

 

 

 

 

 

 

 

 

 

A

RUN,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.

 

ENTHALPY

 

 

 

 

°

 

 

 

 

 

 

 

 

1

IN

 

 

 

 

 

TEMP

 

 

 

 

 

 

–

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IN

5A

 

 

 

 

 

 

.

70

 

 

 

 

 

CCW

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

T

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.

 

 

 

 

 

 

 

80

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

REV.

 

97-367

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

C

D S

O

RE V .

B

TR

Fig. 18 — Durablade Economizer Minimum

Position Damper Setting

Fig. 19 — Outdoor-Air Thermostat/ Enthalpy Control Installation

Fig. 20 — Wiring Connections for

Outdoor-Air Thermostat

—14—

Page 13 Page 15
Image 14
Page 13 Page 15
Contents Installation ContentsSafety Considerations Provide Unit SupportRoof Curb Details IV. RIG and Place Unit III. Install Condensate Drain Line and External TrapII. Field Fabricate Ductwork PositioningUnit MAX Dimensions Weight Base Unit Dimensions Physical Data Unit Size 548D575-3-60 Field Power SupplyMake Electrical Connections 460-3-60Type Electrical Data Units Without Electrical Convenience OutletSIZE† RLA LRA FLA81/2 Tons Electrical Data Units With Electrical Convenience OutletMin FLA VI. Adjust FACTORY-INSTALLED Options Stage Unit Voltage208/230 460 575 Durablade Economizer Installation Durablade Economizer Damper Minimum Position Setting EconoMi$er Component Locations Rear EconoMi$er Flange Installation EconoMi$er Wiring Wiring Diagram for Power Exhaust System Changeover Set Points Default Potentiometer SettingsVII. Adjust INDOOR-FAN Speed Typical Belt-Drive Motor Mounting for Size Unit INDOOR-FAN Maximum Acceptable Fan Rpm at Motor Pulley SettingsIndoor-Fan Motor Performance Continuous BHPFan Performance 548D090 Vertical Discharge Units Standard Motor Belt DriveFan Performance 548D102 Vertical Discharge Units Fan Performance 548D120 Vertical Discharge Units 548D120 10 Tons Standard and Alternate Motors Belt DriveFan Performance 548D090 Horizontal Discharge Units Fan Performance 548D102 Horizontal Discharge Units Fan Performance 548D120 Horizontal Discharge Units Standard and Alternate Motors Belt DrivePRE-START-UP Internal WiringVI. Refrigerant Service Ports START-UP Unit PreparationCooling IX. Adjust GAS InputXII. Safety Relief XI. HeatingDefrost Service CleaningCooling, Units With EconoMi$er Indoor CoilII. Lubrication IV. Economizer Adjustment Refrigerant ChargeCooling Charging Chart 548D102 Problem Cause Remedy TroubleshootingHeating and Cooling Troubleshooting IFO Durablade Economizer TroubleshootingIFC OATTo minimum position Damper does not openEconoMi$er operation limited Damper positionTypical Wiring Diagram Must Voltage Page Preliminary Information START-UP ChecklistTemperatures III. START-UP Electrical

548D specifications

The Bryant 548D heat pump stands out in the HVAC market for its robust performance, energy efficiency, and advanced technology. Known for its reliability, this particular model is designed to provide optimal heating and cooling for both residential and light commercial applications.

One of the standout features of the Bryant 548D is its variable-speed compressor, which allows for precise temperature control and enhances comfort levels in any environment. This technology enables the 548D to operate efficiently at different speeds, adjusting its output based on the heating or cooling demand. As a result, homeowners can enjoy consistent temperature regulation without the wide fluctuations typical of single-stage systems.

In addition to the variable-speed compressor, the Bryant 548D utilizes advanced refrigerant technology. It employs the environmentally friendly Puron refrigerant, which not only improves the unit's efficiency but also reduces its carbon footprint. This makes the 548D a sustainable choice for those looking to minimize their environmental impact while still enjoying superior heating and cooling performance.

Another key characteristic of the Bryant 548D is its impressive energy efficiency rating, often exceeding the minimum requirements set by the Department of Energy. With a high Seasonal Energy Efficiency Ratio (SEER) for cooling in warmer months and an excellent Heating Seasonal Performance Factor (HSPF), the 548D minimizes energy consumption while maximizing comfort.

The 548D also features Quiet Operation technology, ensuring that the system runs quietly in the background without disrupting daily activities. This is particularly beneficial for light commercial spaces or homes where noise can be a concern. The sleek design and compact size make the unit easy to install in various settings without occupying excessive space.

Furthermore, Bryant incorporates advanced smart technology within the 548D model. The system can be integrated with smart thermostats, allowing users to monitor and control their heating and cooling settings remotely. This feature not only enhances convenience but also enables homeowners to program their systems for maximum efficiency.

In conclusion, the Bryant 548D heat pump is an exceptional choice for those seeking a reliable, efficient, and technologically advanced heating and cooling solution. Its combination of variable-speed compression, eco-friendly refrigerant, high energy efficiency, and quiet operation positions it well in the competitive HVAC market, making it a top choice for both residential and light commercial applications. By investing in the Bryant 548D, consumers can enjoy superior comfort and lower energy bills year-round.
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