PVI Industries PV500-47C Operating and Safety Controls, Temperature and Pressure Relief Valve s

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10OPERATING AND SAFETY CONTROLS

WARNING: Turn off all electrical service to the appliance when accessing the limit or other controls located inside the control cabinet. This cabinet contains High Voltage wiring and terminals. If the electrical service is not turned off and these terminals are touched, a dangerous shock causing personal injury or loss of life could occur. Close and fasten the control cabinet cover before restoring electrical service to the appliance.

10.1Temperature and Pressure Relief Valve (s)

A Temperature and Pressure Relief Valve(s) sized in accordance with the ASME Boiler and Pressure Vessel Code is installed in the tank.

WARNING: Secure the relief valve pipe to a suitable floor drain such that very hot water does not openly splash during a significant relief valve discharge. If the relief valve pipe is not routed and secured to a suitable drain, hot water discharge can result in property damage, scalding and personal injury or loss of life.

∙The drain pipe may not be smaller than the relief valve opening and must be secured to prevent it from lifting out of the drain under discharge pressure.

∙CAUTION: Do not install a reducing coupling, valve or other restriction in the T&P relief valve(s) discharge line. The discharge line shall allow complete drainage of the valve and line. Relief valves should be manually operated at least once a year.

∙Thermal Expansion - A relief valve that periodically discharges may result from thermal expansion, if the water heater is installed in a system closed by components, such as a backflow preventer or check valve in the cold water supply. These systems must be provided with means to control expansion. Contact a water heater or plumbing professional to resolve this situation.

∙CAUTION: Do not plug the relief valve, as this will eliminate the critical water temperature and pressure protection it provides.

10.2Operating Temperature Control

An adjustable digital operating control is located in the front control panel. The control is factory pre-set at approximately 120ºF. To adjust the setpoint to deliver the desired water temperature, press and release the Set 1 key on the face of the control. When setpoint adjustment is enabled, use the arrow keys to adjust the set point to the desired system temperature. See TempTrac Electronic Controller Panel in this manual for more information.

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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PV500-47C 06/12

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Contents Installation & Maintenance Manual Table of Contents Operating and Safety Controls Troubleshooting Guide Replacement PartsTemptrac Electronic Controller Panel Remote Connections Terminal StripSafety Considerations Product Safety InformationBelow scalding temperatures Standard Features and Equipment Series Series Water Heater Installation Checking Equipment Before You InstallCodes Electrical RequirementsService Clearances Clearances To Combustible SurfacesGeneral Piping Guidelines Inlet and Outlet ConnectionsPV500-47C 06/12 PV500-47C 06/12 Optional Condensate Neutralization System Single Unit Installation Suggested Pipe Size GAS Supply and PipingInlet Pressure NAT. GAS Convert Fittings to Equivalent Straight PipeMultiple Unit Installations GAS Piping Size Chart Nominal Iron Length of Pipe in Straight FeetInches Appliance Isolation during Gas Supply Piping Pressure TestCombustion and Ventilation AIR Equipment Located In Confined Spaces∙ All Air From Outdoors ∙ All Air From Inside The BuildingDuct Fitting Equivalent Length Duct Pipe Vertical or Horizontal Remote Air Duct TerminationVenting Venting the TriconMaximum Category IV Vent Length Equivalent Length Vent Fitting Equivalent Length Vent PipeVertical or Horizontal Vent Termination Combining Category IV VentsOperating and Safety Controls Temperature and Pressure Relief Valve sHigh Water Temperature Limit Control Cathodic ProtectionTemptrac Electronic Controller Panel SETDown ClockTo Change Other Parameters To View The SetpointTo Change The Setpoint LED Display Alarm Messages Alarm Cause Results of Alarm Condition MessageRecommended Action Remote Connections Terminal StripSequence of Operation Incoming 120VACLoss of Flame Signal LED Indication Fault ModeInitial Startup Turn-on main gas shutoff valve PV500-47C 06/12 Gas Train Illustration Alternate Gas Train IllustrationTroubleshooting Guide Problem Probable Cause Corrective ActionReplacement Parts Replacement PartsControl Panel FUSEHOLDER, Panel Type #HTB-28I Burner Assembly Optional components may or may not be shown Burner Assembly Components SUPPORT, GAS Train FB14 PvifBurner GAS Train Components Contact factory for more informationPeriodic Maintenance PV500-47C 06/12 Recommended Maintenance Schedule PV500-47C 06/12

PV500-47C specifications

PVI Industries has established itself as a leading name in the manufacturing of innovative water heating solutions. Among its diverse product lineup is the PV500-47C, a well-regarded commercial water heater that exemplifies efficiency, reliability, and advanced technology. Designed for a variety of applications, the PV500-47C is particularly suitable for large commercial institutions, including hotels, hospitals, and educational facilities.

One of the standout features of the PV500-47C is its robust construction and high storage capacity. With a tank capacity of 500 gallons, it is designed to accommodate the high-demand hot water needs of large settings. The unit is engineered using resilient materials that provide long-lasting performance while also resists corrosion, ensuring the integrity of the tank over time.

The PV500-47C incorporates advanced heating technologies to improve energy efficiency. Its innovative design includes a highly efficient insulated tank that minimizes heat loss, allowing it to maintain water temperatures effectively. The water heater is typically powered by extensive heat exchangers that maximize energy transfer from the heating source to the water, which can help reduce energy costs and improve overall operational efficiency.

In addition, the PV500-47C boasts a state-of-the-art electronic control system that enables precise temperature management. This feature enhances not only safety but also the efficiency of the heating process, allowing users to program specific temperatures and schedules according to their operational needs. The unit also includes multiple safety features, such as high-temperature limit switches to prevent over-temperature situations, contributing to the overall safety of the water heating system.

Another notable characteristic of the PV500-47C is its ease of installation and maintenance. The unit is designed with accessibility in mind, allowing for straightforward installation in various commercial settings. Regular maintenance is simplified thanks to its accessible components, which makes it easier for technicians to service the system, ensuring minimal downtime.

In summary, the PVI Industries PV500-47C is a highly efficient and dependable solution for commercial water heating needs. Its impressive features, advanced technologies, and user-friendly design make it an optimal choice for businesses that require consistent hot water supply while managing energy costs effectively. This makes the PV500-47C not just a water heater, but an integral asset to any large-scale operation.
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