PVI Industries PV500-45C manual High Water Temperature Limit Control, Cathodic Protection

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10.3High Water Temperature Limit Control

Appliances are equipped with adjustable limit and high limit controls to control the maximum discharge water temperature. These controls are located inside the control cabinet and are accessed by removing the bottom cover. The high limit control is optionally available as the manual reset type and may be reset by pressing the limit reset button accessible through the control panel cover. Pressing the reset on the High Limit Control will not cause the control to reset until the water temperature has dropped below the set point of the manual reset High Limit Control. The Lower Limit is of the auto reset type and can be dial adjusted to operate just above the set point of the main Operating Temperature Control.

10.4Cathodic Protection

PVI water heaters do not utilize cathodic protection. However, in hot water systems utilizing cathodic protection, hydrogen gas can be produced when the hot water system has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To prevent the possibility of injury under these conditions, one of the hot water system faucets should be opened for several minutes before using any electrical device connected to the hot water system. If hydrogen is present, there will be an unusual sound such as air escaping through the pipe as the hot water begins to flow. Do not smoke, have open flames or turn electrical switches on or off near the faucet at the time it is open.

10.5Electronic Low Water Cut-Off (Optional)

When the water level is above the electrode position in the tank, the reset pushbutton will energize the control (LED will be lit). The control remains energized until the water level recedes below the electrode position (LED will not be lit). Unless otherwise specified, there is a three-second time delay on decreasing level. Water level must be below tank probe location for full three seconds before control de-energizes.

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PV500-45C 06/12

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Contents Installation & Maintenance Manual Table of Contents Temptrac Electronic Controller Panel Operating and Safety ControlsTroubleshooting Guide Replacement Parts Remote Connections Terminal StripSafety Considerations Product Safety InformationBelow scalding temperatures Standard Features and Equipment Series Series Series Codes Water Heater InstallationChecking Equipment Before You Install Electrical RequirementsGeneral Piping Guidelines Service ClearancesClearances To Combustible Surfaces Inlet and Outlet ConnectionsPV500-45C 06/12 PV500-45C 06/12 Optional Condensate Neutralization System Inlet Pressure NAT. GAS GAS Supply and PipingConvert Fittings to Equivalent Straight Pipe Nominal Iron Length of Pipe in Straight Feet Single Unit Installation Suggested Pipe SizeMultiple Unit Installations GAS Piping Size Chart InchesCombustion and Ventilation AIR Duct Fitting Equivalent Length Duct Pipe Vertical or Horizontal Remote Air Duct TerminationVenting the Tricon VentingMaximum Category IV Vent Length Equivalent Length Vent Fitting Equivalent Length Vent Pipe Combining Category IV VentsOperating and Safety Controls Temperature and Pressure Relief Valve sCathodic Protection High Water Temperature Limit ControlElectronic Low Water Cut-Off Optional Down Temptrac Electronic Controller PanelSET ClockTo Change The Setpoint To View The SetpointTo Change Other Parameters Recommended Action LED Display Alarm MessagesAlarm Cause Results of Alarm Condition Message Remote Connections Terminal StripSequence of Operation Incoming 120VACLoss of Flame Signal LED Indication Fault ModeInitial Startup Turn-on main gas shutoff valve PV500-45C 06/12 Gas Train Illustration for Models 40 through Gas Train Illustration for Models 65 throughTroubleshooting Guide Problem Probable Cause Corrective ActionReplacement Parts Replacement PartsControl Panel Contact factory for more information Burner Assembly Optional components may or may not be shown Contact factory for more information Item No Qty PVI Part No DescriptionPeriodic Maintenance PV500-45C 06/12 Recommended Maintenance Schedule PV500-45C 06/12 PV500-45C 06/12

PV500-45C specifications

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