State Industries SUF 100 THRU 250 Variable Frequency Drive Blower Speed and Pressure Readings

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VARIABLE FREQUENCY DRIVE – BLOWER SPEED AND PRESSURE READINGS

The instructions for the VFD are sent from the CCB to in the form of a DC current. The chart below lists the current readings, the frequency signal displayed by the VFD, and the pressure switch settings needed for the CCB to let the burner operate. The frequency numbers displayed may vary slightly with slight variations in the DC voltage generated by the CCB. If the water heater exhibits poor run characteristics check the frequency display. If the frequency is more than 5% out of range, check the DC volt signal at the terminals shown on page 43.

Voltage – Frequency – Speed Instructions – VFD

Model

 

SUF 400

 

 

SUF 500

 

Instructions Volts DC

0 - 10 VDC

 

 

0 - 10 VDC

 

 

Terminals OV and AI1

 

 

 

 

 

 

 

 

 

 

 

Volts

Frequency

Pressure w.c. "

Volts

Frequency

Pressure w.c. "

Purge Speed

7.77

150 Hz+/-2

5.85"

7.77

150 Hz+/-2

5.85"

Ignition speed

7.53

150 Hz+/-2

5.3"

9.10

181 Hz

7.2"

High speed

7.77

150 Hz+/-2

5.85"

9.84

196 Hz

9.0"

VFD Part Number

 

 

197500-000

 

 

Frequency is displayed in the red LED. 155 Hz

44

Servicing should only be performed by a Qualified Service Agent

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Contents Commercial GAS High Efficiency Water Heaters Page Table of Contents Introduction QualificationsTools Required GAS Pressure Specifications General InformationInstallation Quick Tips SUF 120 and 150 GAS Pressure Adjustment Procedure GAS Pressure SUF 120 and 150 ModelsPage Installation Quick Tips SUF 199 and 250 GAS Pressure Important NoteInstallation Quick Tips SUF 300, 400, 500 GAS Pressure Adjustment Procedure GAS Pressure SUF 300, 400Installation Quick Tips SUF 300, 400 Installation Venting Category and Materials Ultra Force VentingVent Length Table Equivalent Feet Meters 120 through Venting Tables SUF 120Vent Length Table Equivalent Feet Meters 300, 400 Concentric Venting What about the PH Values of Condensate and Soda POP? Vent CondensationCan I Drain this Condensation to the Floor DRAIN? What does the PH Scale MEAN?Power Vent Direct Vent Vent Termination Direct Vent ALL Models Direct Venting ALL Models PVC ElbowControl Overview Status Icon Description Set PointDisplay Action Adjusting Tank Temperature Operating SET Point DifferentialAction DisplayPress Update to accept the change or Cancel to reset it Changing the Display Units Press Update to accept the change or Cancel to reject it Example of a Fault Advanced Diagnostic Information Example of a WarningTo get to the current fault information screen, press Menu Access to the Current Fault or WarningPress the Down button for more information Fault Codes Viewing Information About the Water Heater Control Sequence Typical ALL Models Typical SequenceControl Sequence Flow Chart Controls Central Control Board CCB This is the back of the UIM Controls GAS Valve SUF Controls GAS Valve SUF 199 High Altitude InstallationGAS Orifice Controls GAS Valve SUF 199 Controls GAS VALVE, Orifice Chart SUF 300/400 Orifice Chart SUF 300Controls GAS VALVE, Orifice Chart SUF Orifice Chart SUFBlocked Outlet Proving Switch Controls Pressure Switches ALL ModelsBlower Proving Switch Blocked Inlet Proving SwitchControls Pressure Switches SUF 120 Through Controls Pressure Switches SUF 300, 400 Page Flame Sensor HOT Surface Igniter / Flame Sensor / Control TimingHOT Surface Igniter Control TimingBlower Speed Control SUF 199 Model High Speed Hz Low Speed HzVariable Frequency Drive SUF 400 Variable Frequency Drive Blower Speed and Pressure Readings Voltage Frequency Speed Instructions VFD Model SUFWiring Diagram SUF 120 User Interface ModulWiring Diagram SUF 400 User Interface ModuleTennessee Waltz Parkway Ashland City, TN

SUF 100 THRU 250, SUF 130 THRU 500, SUF 60 THRU 120 specifications

State Industries has long been a leader in the manufacturing of high-quality water heaters, particularly known for its SUF series. The SUF 60 thru 120, SUF 130 thru 500, and SUF 100 thru 250 models are excellent examples of State Industries’ commitment to efficiency, performance, and innovation. These units are designed to meet a range of residential and commercial water heating needs, showcasing advanced engineering and durability.

The SUF series is primarily built for heavy-duty applications, offering various capacities to accommodate different demands. The SUF 60 thru 120 models are ideal for residential settings, providing dependable hot water solutions with capacity options ranging from 60 to 120 gallons. These units utilize high-quality insulation to minimize heat loss, resulting in improved efficiency and cost-effectiveness.

Moving to the SUF 130 thru 500 series, these models are tailored for larger commercial applications. With capacities extending up to 500 gallons, they are perfect for industries where high volume and consistent hot water supply are essential. The SUF 130 thru 500 models feature robust heating elements and advanced thermostats for precise temperature control, ensuring the delivery of hot water on demand.

The SUF 100 thru 250 units straddle the line between residential and light commercial applications. With capacities from 100 to 250 gallons, these water heaters are versatile and adaptable to various settings. They integrate cutting-edge technology that enhances safety, such as multi-level safety controls and automatic shut-off systems, ensuring user protection while maximizing performance.

Each SUF model is designed with longevity in mind. The tanks are constructed from high-grade materials that resist corrosion and wear, featuring factory-installed anode rods to enhance the lifespan even further. The energy-efficient design of these water heaters meets or exceeds current energy conservation standards, providing an eco-friendly solution without compromising on output.

In summary, State Industries’ SUF 60 thru 120, SUF 130 thru 500, and SUF 100 thru 250 models exemplify the brand’s dedication to quality and innovation. With various capacities, advanced technologies, and a focus on efficiency and durability, these water heaters cater to diverse needs, ensuring reliable hot water supply for years to come.
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