Bryant 664B Indoor Blower and Motor, Wet Coil Pressure Drop, Filter Pressure Drop in. wc

Page 18

664B

Only qualified service personnel should perform maintenance and service procedures that require unit top removal.

Refer to the following top removal procedures:

1.Remove screws on unit top cover surface. (Save all screws.)

2.Remove screws on unit top cover flange. (Save all screws.)

3.Lift top from unit carefully. Set top on edge and make sure that top is supported by unit side that is opposite duct (or plenum) side.

4.Carefully replace and secure unit top to unit, using screws removed in Steps 1 and 2, when maintenance and/or service procedures are completed.

Step 3 — Indoor Blower and Motor

For longer life, operating economy, and continuing efficiency, clean accumulated dirt and grease from the blower wheel and motor annually.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Disconnect and tag electrical power to the unit before cleaning and lubricating the blower motor and wheel.

To clean the blower wheel:

1.Remove the blower housing:

a.Remove the screws on the external side of the duct panel that fasten the housing to the duct panel assembly.

b.Remove the side access panel and unscrew the mounting bracket that fastens the blower housing to the internal partition panel fo the control box assembly.

c.Make sure that the blower housing is supported by hand before completely removing the mounting bracket.

d.Slide the blower housing from the rails of the duct panel and place it outside the unit.

2.Remove the blower wheel from the housing:

a.Loosen the set screw which secures the wheel to the motor shaft.

b.Loosen the three mounting legs of the motor by removing the bolts that fasten themounting legs to the housing.

c.Slide out the motor assembly (motor, belly band and the 3 mounting legs) from the hub of the wheel.

d.Remove the filler panel at the discharge end of the blower housing by removing the two screws that fasten it to the housing.

e.Remove the wheel form the housing.

3.Remove the caked on dirt from the wheel and the motor using a brush.

4.Remove lint and dirt accumulations from the wheel and housing with a vacuum cleaner, using a soft brush attachment.

5.Remove grease and oil with a mild solvent.

6.Reassemble

a.Slip the wheel back in the housing with the hub set screw parented in the correct direction.

b.Install the filler panel.

c.Reinsert the motor assembly in the wheel hub and align the mounting legs with the housing mounting hold locations.

d.Tighten the mounting bolts to fasten the motor assembly with the housing.

e.Center the wheel in the housing by sliding it, align the flat end of the shaft with the set screw and tighten the set screw.

f.Slide back the blower housing into the mounting rails in the duct panel and install the mounting bracket back in its position.

g.Install the screws on the external side of the duct panel to fasten duct panel with the housing.

h.Replace the side access panel.

Table 6 – Wet Coil Pressure Drop

UNIT

 

 

 

 

 

 

STANDARD CFM (S.C.F.M.)

 

 

 

 

 

 

SIZE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

600

700

800

900

1000

1100

 

1200

1300

1400

1500

1600

1700

1800

1900

2000

024

.027

.034

040

.047

.053

--

 

--

--

--

--

--

--

--

--

--

030

--

.036

.042

.050

.055

.063

 

.072

.081

--

--

--

--

--

--

--

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

036

--

--

--

.050

.055

.063

 

.072

.081

.090

.097

--

--

--

--

--

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

042

--

--

--

--

.042

.049

 

.052

.059

.065

.071

.078

.085

.091

--

--

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

048

--

--

--

--

--

--

 

.072

.081

.090

.097

.108

.120

.129

.139

--

060

--

--

--

--

--

--

 

--

--

--

.071

.078

.085

.091

.098

.114

Table 7 – Filter Pressure Drop (in. wc)

 

FILTER

 

 

 

 

 

 

 

 

 

CFM

 

 

 

 

 

 

 

 

 

UNIT SIZE

SIZE in.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(mm)

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

024-036

24 x 24

0.06

0.07

0.08

0.08

0.09

0.09

0.09

0.10

0.11

0.12

0.14

0.15

—

—

—

—

—

—

—

610 x 610

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

042-060

30 x 30

—

—

—

—

—

—

—

—

0.08

0.09

0.10

0.11

0.12

0.13

0.14

0.15

0.16

0.17

0.18

762 x 762

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 8 – Accessory Electric Heat Pressure Drop (in. wc)

HEATER

 

 

 

 

CFM

 

 

 

 

 

 

 

 

 

 

 

 

 

kW

600

800

1000

1200

1400

1600

1800

2000

2200

 

 

 

 

 

 

 

 

 

 

5-20

0.06

0.08

0.10

0.13

0.15

0.18

0.20

0.23

0.25

 

 

 

 

 

 

 

 

 

 

18

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Contents Installation Instructions Table of ContentsSafety Considerations Receiving and InstallationIntroduction Configuring Units for Downflow Vertical Discharge Connect Condensate DrainUnit Damage Hazard Unit Base Dimensions, 664B024-060 Typical Installation Install Electrical Connections Minimum Airflow for Safe Electric Heater OperationUnit Component Damage Hazard PRE-START-UP FIRE, EXPLOSION, Electrical Shock HazardCheck for Refrigerant Leaks Start-Up Cooling and Make Adjust- mentsSTART-UP Refrigerant ChargeIndoor Airflow and Airflow Adjust- ments Required SubcoolingFor 208/230V Blower Motors Unit Controls Compressor RotationSequence of Operation Typical Single-Phase Unit Electrical Diagram Sizes A06405 Typical Three-Phase Unit Electrical Diagram Sizes A06326 Single-Phase Accessory Electric Heater Wiring Volt Horizontal Discharge Unit Air Filter MaintenanceCooling Charging Chart Unit Top RemovalWet Coil Pressure Drop Accessory Electric Heat Pressure Drop in. wcIndoor Blower and Motor Filter Pressure Drop in. wcTroubleshooting START-UP ChecklistTypical Heat Pump Operation, Heating Mode Troubleshooting Chart Symptom Cause RemedyII. PRE-START-UP START-UP Checklist Remove and Store in JOB FilePreliminary Information III. START-UP

664B specifications

The Bryant 664B is a notable addition to the furnace market, recognized for its reliable performance and energy efficiency. Designed for residential applications, this model is particularly well-suited for homeowners looking to improve their heating systems without sacrificing comfort or efficiency.

One of the standout features of the Bryant 664B is its variable-speed blower motor. This technology allows the furnace to adjust its airflow based on the heating demands of the home, resulting in more consistent temperatures and reduced energy usage. By operating at different speeds, the furnace can provide quieter operation, ensuring that homeowners can enjoy a peaceful environment while the system works effectively.

Energy efficiency is a key characteristic of the Bryant 664B, boasting an Annual Fuel Utilization Efficiency (AFUE) rating of up to 80%. This rating indicates that the furnace converts 80% of the fuel it consumes into usable heat, making it a cost-effective choice for homeowners looking to lower their utility bills. The unit's efficient performance not only benefits the household budget but also contributes to a reduced carbon footprint, aligning with modern environmental expectations.

In terms of construction, the Bryant 664B features a robust cabinet that ensures durability and helps to minimize operational noise. Its compact design allows for easy installation in various home configurations, making it a versatile option for many homeowners. The furnace is equipped with advanced diagnostic capabilities, enabling easier troubleshooting and maintenance, thus reducing the potential for costly repairs.

Another noteworthy aspect of the Bryant 664B is its compatibility with smart home technology. Homeowners can integrate the furnace with their existing smart systems, providing enhanced control over their home’s heating environment. This integration allows for remote monitoring and adjustments, ensuring optimal comfort tailored to individual needs.

The Bryant 664B also includes a dependable warranty, providing added peace of mind for homeowners. This warranty underscores the manufacturer’s commitment to quality and customer satisfaction.

Overall, the Bryant 664B is an efficient, reliable, and technologically advanced heating solution. Its combination of variable-speed technology, energy efficiency, solid construction, and integration with smart home systems makes it a compelling option for anyone in need of a modern furnace. Its focus on comfort and performance solidifies its place in the competitive HVAC market.
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