Amana PGB58B, PGC(24-60)B Checking External Static Pressure, Changing Blower Speeds PGC Units

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With a properly designed system, the proper amount of temperature rise will normally be obtained when the unit is operated at rated input with the recommended blower speed.

If the correct amount of temperature rise is not obtained, it may be necessary to change the blower speed. A higher blower speed will lower the temperature rise. A slower blower speed will increase the temperature rise.

NOTE: Blower speed MUST be set to give the correct air temperature rise through the furnace as marked on the rating plate.

Important Note: If an installation uses a different blower speed for cooling than is used for heating, do not set the thermostat fan switch to ON (constant fan operation) during the heating season without first confirming the cooling fan speed will give a temperature rise within the limits listed on the unit nameplate. Temperature rises outside the limits listed could result in premature heat exchanger failure.

Checking External Static Pressure

The total external static pressure must be checked on this unit to determine if the airflow is correct.

Changing Blower Speeds (PGC Units)

WARNING

To avoid personal injury or death due to electric shock, remove electrical power from the unit before changing speed taps on the blower motor.

PGC-B models include a BPM (brushless permanent magnet) motor. Under identical conditions, it operates at a lower power consumption than most PSC motors. Within the allowable range of external static pressures, the BPM motor will automatically adjust its RPM to de- liver the CFM listed in the blower performance table. As static pressure increases, the RPM, current draw, and operating sound level of the motor will also increase. External static pressures in excess of those listed on the nameplate may result in unsatisfactory operation, equipment damage, and/or loss of warranty coverage.

The PGC-B models also include a speed tap board lo- cated on the blower housing. The speed tap settings have been factory selected according to unit size and performance. Field select taps are provided on the speed tap board to assist the final installer. The ADJ. tap is factory set for normal (NORM) operation. Three LED’s are provided on the speed tap board. These lights indi- cate to the servicer which mode of operation the motor is experiencing, that is Heating (W1), Fan Only (G) or Cooling (Y and G).

Refer to the wiring diagram on the unit to verify speed tap settings.

Changing Blower Speeds (PGB Units)

WARNING

To avoid personal injury or death due to electric shock, remove electrical power from the unit before changing speed taps on the blower motor.

A multi-speed motor is used in the furnace blower. It provides easy speed selection for both heating and cool- ing air flow. Section II shows the CFM and E.S.P. rela- tionship for proper selection of heating and cooling speeds. Cooling speed should be set for about 400 CFM per ton cooling capacity.

Refer to the Wiring Diagram on the furnace to connect the proper wires to the correct motor leads. All unused motor leads must be taped or securely covered with wire nuts.

Check Limit And Fan Control

1.Check limit control (Figure 18) operation after 15 minutes of operation by blocking the return air grille(s).

a.After several minutes the main burners must go OFF. Blower will continue to run.

b.Remove air restrictions and main burners will re- light after a cool down period of a few minutes.

2.Adjust the thermostat setting below room tempera- ture.

a.Main burners must go off.

b.Circulating Air Blower should continue to run briefly until supply air temperature drops to approximately 90-100° F.

Fan and limit controls are preset at the factory. The con- trol is set for the fan to go off at 90-100° F:

NOTE: If necessary, adjust fan ON/OFF settings to ob- tain satisfactory comfort level. The fan comes on at ap- proximately 125° F.

WARNING

To avoid personal injury, property dam- age, fire, or premature failure of the heat exchanger, do not adjust the limit con- trol, which is set at the factory.

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Contents PGB58B Table of ContentsGas Pack Specifications Unit SpecificationsHeating TEV PGB CFM& Temperature Rise vs. External Static Pressure Table PGC Temperature Rise TableTo The Installer II. Safety InformationTo The Owner If you smell gasGround Level Installations Only All InstallationsRooftop Installations Only III. General InformationRequired Clearances For All Installations IV. Rigging and Handling Transportation DamageLocating The Thermostat Connecting The Gas Piping Natural Gas Gas PipingGas Piping Proper Piping Practice Checking The Gas PipingTanks And Piping for Propane Gas Units Vl. Electrical Wiring Vll. Circulating Air and Filters Heat Anticipator SettingUnit Voltage Airflow ConversionTypical Electrical Wiring Typical Wiring RooftopFilter Access Door Filter InstallationFilters IX. Condensate Drain VIII. Flue VentAir Inlet Hood and Flue Hood Typical Condensate DrainTiming Chart for Normal Robertshaw Operation PGB & PGC PGB Timing Chart for Normal Cooling OperationPGC Timing Chart for Normal Cooling Operation XIl. Startup and Adjustment Heating Sequence of Operations PGB & PGCXI. Cooling Sequence of Operations Rollout Protection Shown Without Heat Shield Reset After Lock-outPosition of Limit Control Gas Valve Operating Instructions HeatingMeasuring Inlet Gas Pressure Alternate Method Changing Blower Speeds PGC Units Checking External Static PressureChanging Blower Speeds PGB Units Check Limit And Fan ControlShort Cycle Protector Location Fan and Limit ControlScroll Compressors High Pressure Protection DevicesReciprocating Compressor Operating Instructions coolingBlower Motor and Housing XIII. MaintenanceRemoval of Fan Motor Induced Draft MotorAccessory List XIV. Accessories and Functional PartsFunctional Parts List Transition Kit Pressure DropPGC XV. Typical Cooling Performance DataPsig PGC24 XVI. Wiring DiagramPGC PGC Volt Installation G R PGB

PGB58B, PGC(24-60)B specifications

Amana, a trusted name in heating and cooling, offers several high-efficiency gas furnace models, including the PGC(24-60)B and PGB58B. These furnaces combine innovation, reliability, and advanced technology to provide an optimal heating solution for any home.

One of the standout features of the Amana PGC(24-60)B is its modulating heating capability. This technology allows the furnace to operate at different heating levels based on the home’s demands. Instead of simply turning on and off, the PGC adjusts its output to maintain a consistent temperature, promoting energy efficiency and comfort. This not only reduces energy consumption but also minimizes temperature fluctuations, providing a more comfortable indoor environment.

The PGB58B model is designed with a focus on efficiency, boasting an Annual Fuel Utilization Efficiency (AFUE) rating of up to 96%. This means that a higher percentage of the fuel used is converted into heat, making it one of the most efficient choices available. The combination of high-efficiency design and advanced components makes the PGB58B an excellent option for homeowners looking to reduce their energy bills while enjoying reliable heating performance.

Both models come equipped with a durable casing, ensuring longevity and performance. The rust-resistant and heavy-gauge steel construction protects against harsh weather conditions, making them suitable for various climates. Additionally, they feature a multi-speed blower motor, which optimizes airflow and enhances comfort by evenly distributing warm air throughout the home.

Advanced diagnostics and self-monitoring capabilities are integral to these models. The built-in diagnostic system enables quick identification of performance issues, allowing for timely maintenance and reducing repair costs. Furthermore, these furnaces are designed to be compatible with smart home technology, allowing homeowners to control their heating systems remotely and maximize energy efficiency.

In summary, the Amana PGC(24-60)B and PGB58B gas furnaces stand out for their innovative features and commitment to energy efficiency. With modulating heating, high AFUE ratings, durable construction, and smart technology compatibility, they offer reliable heating solutions that ensure comfort while keeping energy costs low. Homeowners can feel confident in their investment, knowing they have chosen a furnace that prioritizes both performance and sustainability.
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