Outdoor Crest® Condensing Boiler

Model OFN3501 100
Fuel Source
Maximum BTU's

  • 96.0% Thermal Efficiency
  • 20:1 Turndown Ratio
  • Featuring CON·X·US® Remote Connectivity and SMART TOUCH™ Operating Control

    •
    Outdoor Crest® Condensing Boiler
    Model OFN3501 100
    Find a Local Pro
    Find a Local Pro
    Product Details
    • 96.0% Thermal Efficiency
    • 20:1 Turndown Ratio
    • Featuring CON·X·US® Remote Connectivity and SMART TOUCH™ Operating Control
    • 8” LCD Touch Screen Control
    • RealTime O2 Feedback™ Option
    • Flexible Flow Rates Up to 600 GPM
    • Up to 100' Equivalent Vent Length
    • 10 Year Limited Warranty

      • Outdoor CREST changes how the industry thinks about fire-tube boilers with the exclusive wave fire-tube design, advancements in Lochinvar combustion technology and the SMART TOUCH™ control with CON·X·US. Now you have the opportunity to use all of these features in sizes ranging from 750,000 to 6.0 million BTU/hr and delivering up to 96.0% thermal efficiency.

    Specifications
    Tech Specs
    Nominal Gallon Capacity
    202 Gallons
    Thermal Efficiency
    96%
    Maximum BTUs
    3,500,000
    Power Source
    GAS
    Limited Parts Warranty
    1 Years
    Water Connection Size
    4"
    ASME Certified
    Yes
    ASME Stamp
    H
    Destination Country
    US
    Fuel Source
    NATURAL
    Ignition Type
    Direct Spark
    Installation Type
    OUTDOOR
    Limited Heat Exchanger Warranty 
    10 Years
    Minimum BTUs
    175,000
    Application
    COMMERCIAL
    Shipping Height 
    95"
    Shipping Length 
    105"
    Shipping Width 
    49"
    Side Loop
    No
    Voltage
    208
    Dimension & Venting
    Type
    Boiler
    Shipping Weight
    3218 lbs
    Vent Type
    Room Air/Direct Vent/ Common Vent
    Product Literature
    Sales Brochures
    Sales Brochure - Crest Condensing Boiler FBN751-6001 Brochure - French pdf-link
    Sales Brochure - Crest Outdoor Condensing Boiler Brochure pdf-link
    Sales Brochure - Crest Outdoor Condensing Boiler Brochure - French pdf-link
    Sales Brochure - CREST RealTime 0₂ Feedback™ Sales Brochure _ French pdf-link
    Submittals
    Submittal Sheet - Crest Condensing Boiler (FBN0751-2001) Submittal - French pdf-link
    Submittal Sheet - Crest Outdoor Condensing Boiler (OFN0750-6001) Submittal pdf-link
    Submittal Sheet - Crest Outdoor Condensing Boiler (OFN0750-6001) Submittal - French pdf-link
    Submittal Sheet - Crest Condensing Boiler Dual Fuel Submittal - French pdf-link
    Submittal Sheet - Crest Condensing Boiler Submittals - Seismic Kit pdf-link
    Submittal Sheet - Crest Condensing Boiler Submittals - Seismic Kit- French pdf-link
    Submittal Sheet - Backflow Preventer Submittal pdf-link
    Submittal Sheet - Backflow Preventer Submittal - French pdf-link
    Submittal Sheet - Crest Condensing Boiler Submittals - Seismic Kit pdf-link
    Submittal Sheet - Crest Condensing Boiler Submittals - Seismic Kit - French pdf-link
    Typical Specification
    Typical Specification - Crest 3-Part Spec pdf-link
    Typical Specification - Crest 3-Part Spec - French pdf-link
    Typical Specification - Crest Typical Specification FBN 751-6001 pdf-link
    Typical Specification - Crest Typical Specification FBN 751-6001 - French pdf-link
    Typical Specification - Outdoor Crest Boiler Typical Specification pdf-link
    Typical Specification - Outdoor Crest Boiler Typical Specification - French pdf-link
    Product Summary
    Product Summary - CREST Commercial Boiler (FBN0751-2001) Product Summary - French pdf-link
    Product Summary - CREST Commercial Boiler (FBN2501-6001) Product Summary _ French pdf-link
    Product Summary - Crest Outdoor (OF0751-2001) Product Summary pdf-link
    Product Summary - Crest Outdoor (OF0751-2001) Product Summary - French pdf-link
    Product Summary - Crest Outdoor (OF2501-6001) Product Summary pdf-link
    Product Summary - Crest Outdoor (OF2501-6001) Product Summary - French pdf-link
    Engineering Schedule
    Engineering Schedule - Crest Boiler Engineering Schedule pdf-link
    2 D Engineering Drawings
    2-D Engineering Drawings - Full Flow - 2 Boilers pdf-link
    2-D Engineering Drawings - Primary Secondary - 1 Boiler pdf-link
    2-D Engineering Drawings - Primary Secondary - 1 Boiler, 1 Indirect - Priority pdf-link
    2-D Engineering Drawings - Primary Secondary - 1 Boiler, 1 Indirect - Zone pdf-link
    2-D Engineering Drawings - Primary Secondary - 1 Boiler - Low Loss Header pdf-link
    2-D Engineering Drawings - Primary Secondary - 2 Boilers, 1 Indirect - Priority pdf-link
    2-D Engineering Drawings - Primary Secondary - 4 Boilers, 1 Indirect - Priority pdf-link
    Manuals
    Manuals-I&O Manuals - Crest Condensing Boiler - FB 751-6001 - I&O Manual - English pdf-link
    Manuals-I&O Manuals - Crest Condensing Boiler - Outdoor Models OF 751-6001 Supplemental Manual - English pdf-link
    Manuals-Service Manuals - Crest Condensing Boiler - FB 751-6001 - Service Manual - English pdf-link
    Manuals-Translations - Crest Condensing Boiler - FB 751-6001 - I&O Manual - FRE-CAN pdf-link
    Manuals-Supplemental Manuals - CON·X·US I&O Manual - English pdf-link
    Manuals-Supplemental Manuals - Crest Condensing Boiler - All Models - Field Server Gateway Guide - English pdf-link
    Manuals-Supplemental Manuals - Crest Condensing Boiler - All Models - ModBus and BacNet Manual - English pdf-link
    Manuals-Supplemental Manuals - Crest Condensing Boiler - All Models - Smart Touch PC Instruction Manual - English pdf-link
    Parts Sheet
    Parts List - Crest Boiler Outdoor 751-2001 Parts Sheet pdf-link
    Parts List - Crest Boiler Outdoor 2501-6001 Parts Sheet pdf-link
    In The Box Sheets
    In The Box Sheets - FB0751-6001 In The Box Sheet pdf-link
    Plan View Drawings
    Plan View Drawings-Outdoor Plan View Drawings - OF0751 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF1001 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF1251 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF1501 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF1751 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF2001 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF2501 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF3001 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF3501 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF4001 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF5001 Plan View Drawing pdf-link
    Plan View Drawings-Outdoor Plan View Drawings - OF6001 Plan View Drawing pdf-link
    Start Up Forms
    Start-Up Forms - Start Up Forms pdf-link
    Start-Up Forms - Start Up Forms - French pdf-link
    Efficiency Curves
    Efficiency Curves - Crest Efficiency Curve pdf-link
    Archive
    Archive-Service Manuals - Crest Condensing Boiler - FBN1500-5000 Service Manual pdf-link
    Archive-Service Manuals - Crest Condensing Boiler - FB 2500-6000 - Service Manual pdf-link
    Archive-User Manuals - Crest Condensing Boiler - FBN1500-5000 User Manual pdf-link
    Archive-User Manuals - Crest Condensing Boiler - FB 2500-6000 - User Manual pdf-link
    Archive-Translations - Crest Condensing Boiler - FBN751-2001 (old rev) I&O Manual FRE CAN pdf-link
    Archive-Translations - Crest Condensing Boiler - FBN1500-5000 - I&O Manual - FRE CAN pdf-link
    Archive-Translations - Crest Condensing Boiler - FB 2500-6000 - I&O Manual - FRE-CAN pdf-link
    Archive-Translations - Crest Condensing Boiler - FBN1500-5000 User Manual FRE CAN pdf-link
    Archive-Translations - Crest Condensing Boiler - FB 2500-6000 - User Manual - FRE-CAN pdf-link
    Archive-Translations - Crest Condensing Boiler - FBN1500-5000 Dual Fuel Sup Manual - FRE CAN pdf-link
    Archive-Translations - Crest Condensing Boiler - FBN2500-5000 Dual Fuel Sup Manual FRE-CAN pdf-link
    Archive-Parts Sheets - Crest Condensing Boiler - FBN1500-5000 Parts Sheets Prior to Serial #4015 pdf-link
    Archive-Parts Sheets - Crest Boiler 2500-6000 Parts Sheet Starting with Serial #4015 pdf-link
    Archive-Parts Sheets - Crest Boiler Dual Fuel 2500-6000 Parts Sheet pdf-link
    Archive-Translations - Crest Condensing Boiler - FB 2500-6000 - Dual Fuel Sup Manual FRE-CAN pdf-link
    Archive-Parts Sheets - Crest Boiler Dual Fuel 1500-5000 Parts Sheet pdf-link
    Warranty
    Warranty Sheet - Warranty Explanation pdf-link
    Warranty Sheet - Crest Boiler 10-Yr Warranty - English pdf-link
    Maintenance Sheet
    Maintenance Sheet - Crest Maintenance Checklist pdf-link
    Piping Diagram
    Piping Diagram - Crest Condensing Boiler - Multiple Boiler, Full Flow - Piping Diagrams pdf-link
    Piping Diagram - Crest Condensing Boiler - Multiple Boiler, Primary Secondary - Piping Diagrams pdf-link
    Piping Diagram - Crest Condensing Boiler - Single Boiler, Full Flow - Piping Diagrams pdf-link
    Piping Diagram - Crest Condensing Boiler - Single Boiler, Primary Secondary - Piping Diagrams pdf-link