PB Heat Gas Boiler manual GAS Piping, Fuel Line Sizing, GAS Supply Piping Installation, Feet Pipe

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GAS PIPING

4. GAS PIPING

A . GENERAL

1.All fuel piping to the boiler is to be in accordance with local codes. In the absence of local regulations refer to the National Fuel Gas Code, ANSI Z223.1/NFPA 54.

2.Size and install piping to provide a supply of gas sufficient to meet the maximum demand of all appliances supplied by the piping.

B.FUEL LINE SIZING

1.The rate of gas to be provided to the boiler can be determined by the following:

Input Rate (ft³/hr) =

Boiler Input Rate

(Btu/hr)

Gas Heating Value

(Btu/ft³)

 

Obtain the gas heating value from the gas supplier.

2.As an alternative use Table 4.1 which uses typical heating values for natural gas and liquefied petroleum (LP) gas.

Table 4.1: Gas Input Rates

Boiler

Gas Input Rate* (ft³/hr)

Natural Gas

LP Gas

Model

PI-T50

50

20

PI-T80

80

32

PI-80

80

32

 

 

 

PI-140

140

56

 

 

 

PI-199

199

79

 

 

 

*Natural gas input rates are based on 1000 Btu/ft³, LP input rates are based on 2500 Btu/ft³.

3.Table 4.2 shows the maximum flow capacity of several pipe sizes based on 0.3" of pressure drop.

a.The values shown are based on a gas specific gravity of 0.60 (Typical for natural gas).

b.Multiply the capacities listed by the factors indicated in Table 5.3 for gas with a specific gravity other than 0.60 to obtain the corrected capacity.

Table 4.2: Maximum Capacity of Pipe (CFH) for a Pressure Drop of 0.3" of Water

Pipe

 

 

1-1/4"

1-1/2"

Length

3/4" NPT

1" NPT

NPT

NPT

(Feet)

Pipe

Pipe

Pipe

Pipe

10

278

520

1,050

1,600

20

190

350

730

1,100

30

152

285

590

890

 

 

 

 

 

40

130

245

500

760

50

115

215

440

670

60

105

195

400

610

 

 

 

 

 

The values are based on a specific gravity of 0.60 (typical for natural gas). See Table 4.3 for capacity correction factors for gases with other specific gravities.

Table 4.3: Maximum Capacity Correction Factors for Specific Gravity other than 0.60

Specific

0.50

0.55

0.60

0.65

0.70

0.75

Gravity

 

 

 

 

 

 

Correction

1.10

1.04

1.00

0.96

0.93

0.90

Factor

 

 

 

 

 

 

 

 

 

 

 

 

 

Specific

0.80

0.85

0.90

1.00

1.10

1.20

Gravity

 

 

 

 

 

 

Correction

0.87

0.84

0.82

0.78

0.74

0.71

Factor

 

 

 

 

 

 

 

 

 

 

 

 

 

Specific

1.30

1.40

1.50

1.60

1.70

1.80

Gravity

 

 

 

 

 

 

Correction

0.68

0.66

0.63

0.61

0.59

0.58

Factor

 

 

 

 

 

 

 

 

 

 

 

 

 

4.The gas piping to the boiler must be a minimum of 3/4" pipe. The boiler is supplied with a 3/4" NPT x 1/2" NPT bell reducer. Do not remove the reducer.

5.Size and install the gas supply piping for no more than 0.5 inches of water pressure drop between the gas regulator and the boiler.

C.GAS SUPPLY PIPING INSTALLATION

1.Do not install any piping directly over or in front of the boiler. Locate the drop pipe adjacent to the boiler.

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Contents Peerless Pinnacle Table of Contents Using this Manual Installation SequenceSpecial Attention Boxes Codes & Regulations PreinstallationGeneral Accessibility Clearances Combustion and Ventilation AIRAccessibility Clearances Floor Standing Units Wall Hung Boilers Boiler SET-UPGeneral Floor Mounted BoilersWater Piping and Controls Operating ParametersSystem Components Piping Symbol Key Boiler Inputs and Outputs Net I=B=R Output Model Btu/hr kWRecommended Circulators Boiler Flow Rate and Pressure Drop Boiler ModelFeet meters Grundfos CirculatorSystem Piping Freeze Protection Pinnacle Circulator Sizing GraphOne Boiler, Primary/Secondary with Two Zones Zone Circulator Water Piping and Controls Water Piping and Controls Water Piping and Controls Three Boilers, Primary/Secondary with Four Zones Zone Valves Special Applications Boiler in conjunction with a Chilled Water System Fuel Line Sizing GAS Supply Piping InstallationGAS Piping Feet PipeGAS Supply Piping Operation Gas Supply Piping Sediment TrapRecommended Vent CO² Settings Firing Gas Type Rate Main GAS Valve OperationApproved Materials for Exhaust Vent and Intake AIR Pipe Exhaust Vent / AIR Intake Pipe LocationExhaust Vent and Intake AIR Pipe Sizing Fitting Equivalent Length Table Fitting DescriptionExhaust Vent and AIR Intake Pipe Installation Vent Termination Kits Stock Description CodeVENTING, Inlet AIR and Condensate PI-T50 & PI-T80 Sidewall Venting with 2 Pipe 2 Vent Kit Venting with 3 Pipe Venting with 3 Pipe Concentric Vent Kit With 2 Pipe With 2 Pipe Concentric Vent KitCondensate Drain Installation Exhaust Tapping for Vent SampleBoiler Removal from Common Venting System Wiring ElectricalSequence of Operation Boiler Control Board Wiring Schematic Safety Interlocks Control FunctionsInstaller Menu Parameter Function Status Menu Description CodeSTART-UP Procedures Completing the InstallationFor Your Safety Read Before Operating Lighting and Operating ProceduresCHECK-OUT Procedure Troubleshooting Boiler ErrorBoiler Fault P125 Control Board Fault Codes Fault Code Description Corrective ActionWeekly with Boiler in USE MaintenanceGeneral with Boiler in USE Annually Before Start of Heating SeasonGAS Leaks Reset thermostats Important Make Boiler Dimensions & Ratings Boiler DimensionsPI-80/PI-140/PI-199 Dimensions Lbs Sch 40 PVCRepair Parts Repair Parts Appendix A. WHAT’S NEW with the P125 Control Board Advantages of the P125 Control BoardP125 Control Board Quick Reference P125 Control Board VS. WHA Control Board Comparison Figure A.2Comparative Control Board Sequence of OperationPeerless Pinnacle

Gas Boiler specifications

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