PB Heat Gas Boiler Flow Rate and Pressure Drop Boiler Model, Feet meters, Grundfos Circulator

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c.The required flow rate can be calculated based on the design temperature difference from the return to the supply of the boiler. For a PI-T80 with a design temperature difference of 20°F the calculation is as follows:

Output 64,000

Required Flow = ∆T x 500 = 20 x 500 = 6.4 GPM

d.Table 3.3 shows the pressure drop (in feet of water) for a flow rate which gives a 20°F temperature difference for each boiler model.

Table 3.3 – Flow Rate and Pressure Drop

Boiler

Flow Rate

Pressure Drop

Model

(GPM [LPM])

(Feet [meters])

 

 

 

PI-T50

4.0 (15.1)

4.5 (1.22)

 

 

 

PI-T80

6.4 (24.2)

5.0 (1.52)

 

 

 

PI-80

6.4 (24.2)

5.0 (1.52)

 

 

 

PI-140

11.2 (42.4)

8.0 (2.44)

 

 

 

PI-199

15.9 (60.2)

13.0 (4.02)

 

 

 

e.The boiler pressure drop for various flow rates can be determined by using Figure 3.2, the Pinnacle Circulator Sizing Graph.

f.Table 3.4 gives the recommended circulators for a boiler on a secondary loop with water as the heating medium.

Table 3.4 – Recommended Circulators

Boiler

TACO

Grundfos Circulator

Model

Circulator

 

 

 

 

PI-T50

006

UPS 15-58FC SPD-1

 

 

 

PI-T80

007

UPS 15-58FC SPD-2

 

 

 

PI-80

007

UPS 15-58FC SPD-2

 

 

 

PI-140

0010

UPS 15-58FC SPD-3

 

 

 

PI-199

0011

UP 26-64F

 

 

 

NOTICE

The circulator sizing given is for primary/secondary installations only. The system circulators must be sized based on the flow and pressure drop requirements of the system.

WATER PIPING AND CONTROLS

g.Special consideration must be given if anti-freeze is to be used as a heating medium. Propylene glycol has a higher viscosity than water therefore the system pressure drop will be higher.

10.Indirect Water Heater: An indirect water heater should be piped in a dedicated zone. It consists of a water tank that is heated by boiler water passing through an internal coil. Examples of indirect water heating are shown in the System Piping subsection of this Section.

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Contents Peerless Pinnacle Table of Contents Using this Manual Installation SequenceSpecial Attention Boxes General Accessibility Clearances PreinstallationCodes & Regulations Combustion and Ventilation AIRAccessibility Clearances Floor Standing Units General Boiler SET-UPWall Hung Boilers Floor Mounted BoilersWater Piping and Controls Operating ParametersSystem Components Boiler Inputs and Outputs Net I=B=R Output Model Btu/hr kW Piping Symbol KeyFeet meters Flow Rate and Pressure Drop Boiler ModelRecommended Circulators Boiler Grundfos CirculatorPinnacle Circulator Sizing Graph System Piping Freeze ProtectionOne 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 GAS Piping GAS Supply Piping InstallationFuel Line Sizing Feet PipeGas Supply Piping Sediment Trap GAS Supply Piping OperationMain GAS Valve Operation Recommended Vent CO² Settings Firing Gas Type RateExhaust Vent / AIR Intake Pipe Location Approved Materials for Exhaust Vent and Intake AIR PipeFitting Equivalent Length Table Fitting Description Exhaust Vent and Intake AIR Pipe SizingVent Termination Kits Stock Description Code Exhaust Vent and AIR Intake Pipe InstallationVENTING, Inlet AIR and Condensate PI-T50 & PI-T80 Sidewall Venting with 2 Pipe 2 Vent Kit With 2 Pipe With 2 Pipe Concentric Vent Kit Venting with 3 Pipe Venting with 3 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 Control Functions Safety InterlocksStatus Menu Description Code Installer Menu Parameter FunctionCompleting the Installation START-UP ProceduresLighting and Operating Procedures For Your Safety Read Before OperatingCHECK-OUT Procedure Troubleshooting Boiler ErrorBoiler Fault Fault Code Description Corrective Action P125 Control Board Fault CodesGeneral with Boiler in USE MaintenanceWeekly with Boiler in USE Annually Before Start of Heating SeasonGAS Leaks Reset thermostats Important Make Boiler Dimensions Boiler Dimensions & RatingsPI-80/PI-140/PI-199 Dimensions Sch 40 PVC LbsRepair Parts Repair Parts Appendix A. WHAT’S NEW with the P125 Control Board Advantages of the P125 Control BoardP125 Control Board Quick Reference Figure A.2Comparative Control Board Sequence of Operation P125 Control Board VS. WHA Control Board ComparisonPeerless Pinnacle

Gas Boiler specifications

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