Overview

The Johnston PFTA Series is a skid-mounted packaged boiler complete with boiler, burner, and all required controls and safety equipment. This PFTA is a four-pass wet-back firetube boiler, constructed to ASME Section I code and utilizes 5 sq ft of surface area per boiler horsepower.

This boiler was purchased by Powerhouse from a customer who was replacing these boilers with new ones. This boiler has since been fully reconditioned and tested for a new customer. Our reconditioning process verifies that this boiler is 100% functional and ready for many more years of service which is why we offer a 1-yr warranty that matches or exceeds the original factory warranty.

Specs

  • BrandJohnston
  • Boiler TypeFiretube
  • Output Capacity2,156 - 8,625 PPH
  • Max Pressure50 - 150 PSIG
  • Fuel(s)#2 Oil, #6 Oil
  • ServiceSaturated Steam
  • Emission Rating110 ppm

Technical Specifications

General Design

  • Manufacturer (OEM)Johnston
  • Year2007
  • Serial No.10644-01
  • National Board No.10639
  • CRN No.-
  • ModelPFTA250-4LH-150S
  • ASME CodeSect. I - High-Pressure Steam
  • TypeScotch Marine
  • DesignFour-Pass Wet Back Firetube
  • MountingSaddles & Skid-Mounted
  • InternalStraight Furnace & Straight Tubes

Capacities & Inputs

  • Output Capacity8,625 LB/HR
  • Horsepower250 BHP
  • Design Pressure (MAWP)150 PSIG
  • Operating Range50 - 135 PSIG
  • Heating Surface1,295 FT²
  • Max. Fuel Input#2: 71 GAL/HR #6: 65 GAL/HR
  • Standard Fuels#2 Oil & #6Oil
  • Additional FuelsNatural Gas
  • Input Gas Pressure-
  • Turndown Ratios#2: 4:1 #6: 4:1
  • Emission Rating (NOX)Uncontrolled

Burner and Electrical

  • Burner Manufacturer (OEM)Johnston
  • ModelSeries A
  • TypeFull Modulation
  • Flue Gas Recirculation (FGR)No
  • Electric240V/3PH/60Hz
  • AtomizationAir
  • Control TypeSingle-Point Positioning
  • Boiler Control System-
  • Burner Management SystemTBD
  • Flame SafeguardTBD
  • Blow Motor7.5 HP
  • Burner InstalledYes
  • Pilot Type NG
  • Instrument Air-
  • Air Compressor3 HP

Dimensions and Weights

  • Overall Length16' 1"
  • Overall Height9' 2-1/4"
  • Overall Width8' 10"
  • Shipping Weight24,500 LBS
  • Operating Weight36,000 LBS
  • Boiler Outlet6" 300# FLG.
  • Exhaust Outlet18" ø OD

Technical Overview PDF

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