State Industries SUF-130- 300/400/500 General, Maintenance Schedule, Draining And Flushing

Page 60

Maintenance

General

Keep appliance area clear and free from combustible materials, gasoline and other flammable vapors and liquids. See Locating The Water Heater on page 60.

Water heater maintenance includes periodic tank flushing and cleaning, and removal of lime scale. The water heater should be inspected and adjusted to maintain proper combustion. See Initial Start Up on page 60. A periodic inspection of the venting system should be made. Where used, water circulating pump(s) should be oiled according to the pump manufacturers recommendations.

Precautions

CAUTION

Do not operate the water heater if it has been exposed to or exhibits the following:

Flooding at or above the level of the burner or controls.

External damage.

Firing without water.

Sooting.

Do not operate the water heater until all corrective steps have been made by a qualified service agent.

Never operate the water heater without first being certain it is filled with water and a properly sized and rated Temperature-Pressure Relief Valve is installed in the relief valve opening on the water heater. See Temperature-Pressure Relief Valve on page 60.

Explosion Hazard

Overheated water can cause water tank explosion.

Properly sized temperature and pressure relief valve must be installed in the opening provided.

Should overheating occur or the gas supply fail to shut off, turn of the Main Gas Shutoff valve. See Figure 52 on page 60.

Water heater maintenance includes periodic tank flushing and cleaning, and removal of lime scale. The water heater should be inspected and adjusted to maintain proper combustion. Refer to the following table. A periodic inspection of the venting system should be made. Where used, the water circulating pump should be oiled according to the pump manufacturer's recommendations.

Maintenance Schedule

Table 14

Component

Operation

Interval

Required

Tank

Sediment

Semi Annually

Flushing

 

Removal

 

 

Tank

Lime Scale

Semi Annually

UN-LIME®

 

Removal

 

 

Anode Rods

Inspection

Annually

Clean Scale

 

Cleaning

 

Deposits

T&P Valve

Test Operation

Semi Annually

Test

 

 

 

 

Vent System

Inspection

Annually

Termination

 

 

 

Screens Clean

 

 

 

Reseal/Repair

Draining And Flushing

It is recommended that the water heater storage tank be drained and flushed every 6 months to reduce sediment buildup. The water heater should be drained if being shut down during freezing temperatures. See Features And Components on page 60 for the location of the water heater components described below.

Burn harzard.

Hot water discharge.

Keep hands clear of drain valve discharge.

To drain the water heater storage tank:

1.Turn off the electrical supply to the water heater.

2.Turn off the gas supply at the Main Gas Shutoff Valve if the water heater is going to be shut down for an extended period.

3.Ensure the cold water inlet valve is open.

4.Open a nearby hot water faucet and let the water run until the water is no longer hot.

5.Connect a hose to the water heater drain valve and terminate it to an adequate drain.

6.Close the cold water inlet valve.

7.Open the water heater drain valve and allow all the water to drain from the storage tank.

8.Close the water heater drain valve when all water in the storage tank has drained.

9.Close the hot water faucet opened in Step 4.

10.If the water heater is going to be shut down for an extended period, the drain valve should be left open.

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Contents Commercial gas water heaters Table Of Contents Safe Installation, Use and Service ANSI/NSF-5Optional General Safety Information PrecautionsHydrogen Gas Flammable Overheated water can cause water tank explosionInstalling, using or servicing Water heater Fire and Explosion HazardPreparing For The Installation IntroductionAbbreviations Used QualificationsFeatures And Components Basic OperationWater Heater’s 120 VAC on/off switch Top ViewTop View Components Side Views Installation Considerations Rough In DimensionsRecovery Capacities Gas Line Connection SizeService Clearance Locating The Water HeaterClearance To Combustible Materials Intake Air and Vent Pipe ClearancesExtended Vent Terminations Optional Concentric TerminationsHard Water Circulation PumpsInstallation Requirements Power SupplyGas Pressure Requirements Supply Gas LineMixing Valves Dishwashing MachinesClosed Water Systems Thermal ExpansionTemperature-Pressure Relief Valve Valve Discharge Pipe RequirementsCondensate Drain Combustible Material StorageContaminated Air Condensate Drain Water TrapAir Requirements Unconfined SpaceConfined Space Fresh Air Openings For Confined Spaces Outdoor Air Through Two OpeningsOutdoor Air Through One Opening Outdoor Air Through Two Horizontal DuctsPage Commonwealth of Massachusetts InspectionVenting Installation General Venting InformationGeneral Venting Instructions Venting Requirements Venting Installation Sequence Power Vent InstallationDirect Vent Installation Vertical Termination Installation 3 ReducerVertical Termination Direct Vent Sidewall Termination Installation Concentric Termination Installation Inch Concentric Termination Flat Roof ClearanceInch Concentric Termination Installation Inch Concentric Termination KITInch Concentric Termination Sidewall Installation TWO Concentric Terminations Three Concentric TerminationsFour Concentric Terminations Eight Concentric TerminationsMultiple Concentric Termination Arrangements Two Concentric TerminationsEight Concentric Terminations Power Vent Horizontal Venting ArrangementsDirect Vent Horizontal Direct Vent Vertical Vent Horizontal Intake Direct Vent Horizontal Vent Vertical IntakeDirect Vent Horizontal Concentric Termination Clearances Sidewall Power Vent Power VentTermination Clearances Sidewall Direct Vent Direct VentWater Heater Installation Condensate Drain InstallationInstallation Notes Installation InstructionsSupply Gas Line Installation Gas Line SizingSupply Gas Line Sizing U. S. Units Supply Gas Line Sizing Metric UnitsSupply Gas Regulator Installation Gas Line Leak TestingGas Line Connection Electrical Wiring Power Supply ConnectionsEnable/Disable Circuit Connecting An External Supervisory ControlWater Piping Diagrams Water Line ConnectionsValve Discharge Pipe Thermometers not SuppliedTemperature Regulation High Temperature Limit Control ECOHigh Temperature Applications Thermostat ControlControl System Operation OverviewControl System Navigation User Input ButtonsStatus Icons Icon DescriptionOperating States State DescriptionControl System Menus Menu DescriptionUser Settings & Control System Menus Update CancelBack Help Description/Action DisplayChange Back Help Display Settings Description/Action Heater Information Description/Action DisplayBack Advanced View Back HelpECO YESUpdate Service Contact InformationSelect Back Help NameStart Up Prior to Start upInitial Start Up Supply Gas Pressure Adjustment Multiple Appliance InstallationsManifold Gas Pressure Adjustment High Altitude Installations Checking The Firing Rate1050 = 300,000 Btu/hr 87.9 kW To Turn Off GasLighting The Water Heater Lighting & Operation LabelHoneywell Troubleshooting Installation ChecklistSequence Of Operation Sequence Of Operation Flow Chart Closed by control system Fault Msg is displayedPre-Purge cycle Water is heated to VAC Gas ValveOperational Problems Installation ErrorsRough Starting, Rough Operation Momentary IgnitionFault And Alert Conditions Fault And Alert Messages Possible Causes Check/Repair Displayed Fault/Alert MessageBlower Prover Failure No Anode VoltageMaintenance Maintenance ScheduleGeneral Draining And FlushingFilling The Water Heater Sediment RemovalLime Scale Removal Powered Anode Rods Drain Valve and Access PanelsTemperature-Pressure Relief Valve Test Vent SystemDiagrams CCB Central Control Board LayoutSUF 130 300 Wiring Diagram User Interface ModulSUF 130 400, 500 Wiring Diagram UserCirculation Pump Wiring Diagrams Water Piping Diagrams Temperature & Pressure Tank Temperature ALT. Cold Water State Storage Tank Water Piping Diagrams Line Temperature Control HOT Water Outlet Pipe T&P to Open Drain Finished Floor Limited Warranty