State Industries SUF-130-300 Noisy Burner Operation, GAS Fails to Shut OFF, Replacement Parts

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NOTE: Always turn off and disconnect main supply wiring before servicing the unit.

4.Check connecting wire to the flame sensor. Verify that the flame sensor has not been damaged in any way.

5.Verify that the air supply is adequate. The air inlet screen or blower wheel may be restricted. Also, check the installation for proper ventilation. See AIR REQUIREMENTS.

6.Check the venting system for the correct sizing, excess or insufficient. See VENTING.

7.Check for a maximum inlet pressure of 11" Natural Gas

(2.74 kPa) W.C. and the manifold pressure as listed in Table 4: that is, for Natural Gas, 4.0" (0.996 kPa) W.C. Please note that the manifold pressure listed is the maximum value for the manifold pressure. Do not set the manifold pressure higher than the value shown for your heater in Table 4. Overfiring the heater will result in rough ignition and/or noisy operation.

8.Confirm that the air inlet screen (see Figures 7 & 8) is free of obstructions.

CAUTION

Do not reach into the burner housing or combustion chamber if the heater is still hot. Allow the heater to cool and always use gloves as the combustion chamber and the burner sleeve and housing can become very hot after operation. Overfiring is a dangerous condition that must be corrected immediately.

NOISY BURNER OPERATION

The exhaust of this unit produces some noise during ignition period. When combustion is too lean or too rich, start up noise will get worse. Check for flue gas CO2 reading, adjust gas valve manifold pressure if required to bring the flue gas CO2 to 9–9.5% level for natural gas, 10.75–11.25% for LP. This noise may be objectionable if the exhaust terminal is located too close to the opening of an occupied space. The noise may also be objectionable if the exhaust is located in the confined space between two buildings such as an alley or walkway. Since everyone's perception and tolerance for background noise varies, there is no standard recommendation. The best option when the noise is a concern is to fine-tune the air/gas ratio of the combustion system or locate the exhaust as far away from any occupied spaces as practical.

GAS FAILS TO SHUT OFF

Check for defective gas valve or thermostat. If operation is incorrect, replace.

REPLACEMENT PARTS

Replacement parts may be ordered through State dealers, authorized servicers or distributors. Refer to the Yellow Pages for where to call or contact State Water Heaters, 500 Tennessee Waltz Parkway, Ashland City, TN 37015, 1-800-821-2017. When ordering parts be sure to state the quantity, part number and description of the items including the complete model and serial number as it appears on the product. Refer to the parts list for more information.

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Contents Commercial GAS Water Heater ROUGH-IN-DIMENSIONS ForewordTable of Contents FeaturesAT a Glance Quick Installation Tips Horizontal Sidewall Venting Vertical Rooftop VentingDishwashing Machine Requirement Water Temperature Setpoint Adjustment ProcedureHigh Limit Switch E.C.O Required Ability Installation InstructionsCirculating Pump Insulation BlanketsAIR Requirements ClearancesHard Water Unconfined SpaceInstallation of Carbon Monoxide Detectors VentingCanadian Direct Vent US Horizontal Vent Direct Venting Direct Vent Terminal InstallationVent Pipe Termination 3x 4 PVC Reducer with Intake ScreenInstallation Sequence Vertical Vent Terminal InstallationInstallation of Vent System Vent Length TableControls and Switches Connection of GAS Pipe GAS PipingHOT Surface Igniter System Connections Heater Wiring Water Potable Heating and Space HeatingSUF 130-300 Wiring Diagram SUF 130-400 Wiring Diagram Sequence of Operation OperationElectronic Control OverviewAdjusting the Operating Set Point Example of a Warning Fault and Warning ConditionsChanging the Display Units Example of a Fault Advanced Diagnostics Information Access to the Current Fault or WarningViewing the Fault History Viewing Information About the HeaterOperating Instructions Prior to Start UP Required AbilityOperating Instructions Maintenance General InformationSediment Removal FlushingDraining Lime Scale RemovalVent System Powered Anode SystemDrain Valve and Access Panels Installation Diagrams Page Must be Identical Heaters Pipe Relief Valve to Open Drain Page Multiple Unit Installations Troubleshooting Motor will not RUN Motor RUNS, Burner Lights Momentarily Then Locks OUTGAS Fails to Shut OFF Replacement PartsNoisy Burner Operation Model SUF-130-300/400 NEA /PEA Limited Warranty Tank

SUF-130-300, SUF-130-400 specifications

State Industries, a renowned leader in the manufacturing of high-efficiency commercial water heaters, has established a strong reputation with its SUF-130-400 and SUF-130-300 models. These units are engineered for optimal performance and energy savings, making them ideal choices for various applications in industries such as hospitality, healthcare, and manufacturing.

The SUF-130-400 model offers an impressive 400,000 BTU per hour input, ensuring rapid heating and consistent hot water supply even during peak demand periods. This model is designed with a durable stainless-steel construction, providing longevity and resistance to corrosion, which is essential for demanding environments. It features a high-efficiency burner that maximizes combustion efficiency and minimizes emissions, making it a sustainable choice for businesses looking to reduce their environmental impact.

On the other hand, the SUF-130-300 model, with a slightly lower input of 300,000 BTU per hour, is perfect for smaller operations that still require a reliable and efficient hot water solution. Despite its lower capacity, this model does not compromise on performance. It incorporates advanced insulation technology that significantly reduces heat loss, enhancing overall operational efficiency and reducing energy costs.

Both models utilize a proven electronic ignition system, ensuring reliable starting and reducing the need for constant pilot light maintenance. This technology is enhanced by a highly responsive digital control system that allows users to easily monitor and adjust temperatures as needed, further promoting intuitive operation and energy savings.

Safety is a priority with these units, as they are equipped with built-in safety mechanisms including flame roll-out switches and pressure relief valves, ensuring safe operation even under the most rigorous conditions. Additionally, the easy-access design facilitates straightforward maintenance and servicing, minimizing downtime and allowing for quick responses to any operational issues.

In conclusion, the State Industries SUF-130-400 and SUF-130-300 models represent the pinnacle of efficiency and reliability in commercial water heating. Their robust construction, advanced technology, and user-friendly features make them an excellent investment for any business requiring consistent hot water supply without compromising on performance or energy efficiency. These models are poised to meet the challenges of modern water heating needs while ensuring sustainability and safety.
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