PVI Industries PV500-45U manual GAS Supply and Piping, Inlet Pressure NAT. GAS

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7GAS SUPPLY AND PIPING

Verify that the type of gas specified on rating plate is supplied to the unit. This unit is orificed for operation up to 2000 feet altitude. Appliance Btuh output derates 4% per 1000 feet elevation above sea level. Consult Factory for installations above 2000 feet elevation.

7.1Gas Train and Controls Certification

NOTE: The gas train and controls assembly provided on this unit have been tested under the applicable American National Standard to comply with safety and performance criteria such as proper ignition, combustion and safety shutdown operation.

7.2Gas Control Trains

All models include gas control trains with the following components: main manual shutoff valve, two safety shutoff valves, proportionator regulator and a final manual valve with the manifold pressure tap on the side of the valve. These components may be separate or two or more may be combined in a common housing.

CAUTION: Do not adjust or remove any screws or bolts on gas train control components which are sealed with a red or blue colored compound. Doing so will void all approvals and warranties.

7.3Inlet Pressure

Measure at the inlet pressure tap located at the main gas cock. The inlet pressure must remain within the minimum and maximum values while the unit is at rest and while the unit is operating at maximum firing rate.

INLET PRESSURE

NAT. GAS

Maximum Static Pressure (Inches-Water Column)

14"

Minimum Flow Pressure (Inches-Water Column)

4.5"

7.4 Manifold Pressure

LP

14"

11"

Measure at the pressure tap located downstream side of the manual valve closest to the burner. The rated manifold pressure appears on the product data label located near the front of the appliance.

7.5 Gas Piping Size

Use the values in “Convert Fittings To Equivalent Straight Pipe” to add the equivalent straight pipe for each elbow or tee to obtain the total distance from the meter.

CONVERT FITTINGS TO EQUIVALENT STRAIGHT PIPE

Diameter Fitting (inches)

¾"

1"

1¼"

1½"

2"

3"

4"

5"

Equivalent Length of Straight Pipe (feet)

2'

2'

3'

4'

5'

10'

14'

20'

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PV500-45U 06/12

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Contents Installation & Maintenance Manual Table of Contents Remote Connections Terminal Strip Operating and Safety ControlsTroubleshooting Guide Replacement Parts Temptrac Electronic Controller PanelProduct Safety Information Safety ConsiderationsBelow scalding temperatures Standard Features and Equipment Series Series Series Electrical Requirements Water Heater InstallationChecking Equipment Before You Install CodesInlet and Outlet Connections Service ClearancesClearances To Combustible Surfaces General Piping GuidelinesPV500-45U 06/12 PV500-45U 06/12 Optional Condensate Neutralization System GAS Supply and Piping Inlet Pressure NAT. GASConvert Fittings to Equivalent Straight Pipe Inches Single Unit Installation Suggested Pipe SizeMultiple Unit Installations GAS Piping Size Chart Nominal Iron Length of Pipe in Straight FeetCombustion and Ventilation AIR Vertical or Horizontal Remote Air Duct Termination Duct Fitting Equivalent Length Duct PipeVenting Venting the TriconMaximum Category IV Vent Length Equivalent Length Combining Category IV Vents Vent Fitting Equivalent Length Vent PipeTemperature and Pressure Relief Valve s Operating and Safety ControlsHigh Water Temperature Limit Control Cathodic ProtectionElectronic Low Water Cut-Off Optional Clock Temptrac Electronic Controller PanelSET DownTo View The Setpoint To Change The SetpointTo Change Other Parameters Remote Connections Terminal Strip LED Display Alarm MessagesAlarm Cause Results of Alarm Condition Message Recommended ActionIncoming 120VAC Sequence of OperationLED Indication Fault Mode Loss of Flame SignalInitial Startup Turn-on main gas shutoff valve PV500-45U 06/12 Gas Train Illustration for Models 65 through Gas Train Illustration for Models 40 throughProblem Probable Cause Corrective Action Troubleshooting GuideReplacement Parts Replacement PartsControl Panel Contact factory for more information Burner Assembly Optional components may or may not be shown Item No Qty PVI Part No Description Contact factory for more informationPeriodic Maintenance PV500-45U 06/12 Recommended Maintenance Schedule PV500-45U 06/12 PV500-45U 06/12
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