• Efficiency: ENERGY STAR® Certified
  • Capacity: 50, 75, 100, 150, & 200 – All Dunkirk Helix VLT capacities are 95% efficient
  • Patented Heat Exchanger: Direct Vent, Patent No. 10,012,413
  • Combustion: Sealed Combustion
  • Venting: Direct Vent
  • Boiler Type: Hot Water
  • Wall Mount: Bracket included.
  • Boiler Control Module: Automatic Line Voltage/Intermittent Direct Spark Ignition/Modulating with a 5:1 combustion turn down ratio. For multiple boiler applications – the control module can stage fire up to 16 boilers.
  • User Display Interface: Easy programming with text display. Outdoor Temperature Sensor included.
  • Heat Exchanger: High grade 316L/444 Stainless Steel Fin Coil with Flame Sight Glass.
  • Built-in Primary/Secondary Manifold Piping and Pump.
  • Combustion: Gas Valve with Premix Venturi and Blower, Durable Stainless Steel Mesh Modulating Burner with 5:1 turn down ratio, Direct Spark Igniter, Flame sensor and LP Conversion Kit included.
  • Electrical: Detachable Low Voltage Terminal Strip, High Voltage Junction Box and Transformer.
  • Other
    • Factory installed probe-type Low Water Cut Off with test feature
    • 30 PSI Safety Relief Valve
    • Boiler Drain Valve and Condensate Drain with built in trap.

  • Central Heating Pump available for 50 to 200 MBH (Taco 007 or Grundfos UP15-42F).
  • Concentric Vent Kit (2″ and 3″).
  • Floor Stand Kit.
  • System Sensor (For Multiple Boiler Applications).

Brochure
Helix VLT Brochure Rev. 9/13
Helix VLT Brochure Rev. 2/14
Helix VLT Brochure Rev. 1/15
Helix VLT Brochure Rev. 1/14
Helix VLT Brochure Rev. 8/13
Helix VLT Brochure Rev. 6/13
Helix VLT Brochure Rev. 3/12B
Helix VLT Brochure Rev. 11/12
Helix VLT Brochure Rev. 1/13
Helix VLT Brochure Rev. 12/11
Engineering Documents / Resources
Helix VLT Multiple Boiler Sensor Guide Rev. B
Helix VLT Submittal Rev. C
Helix VLT Submittal Rev. B
Helix VLT Gas Conversion Instructions Rev. A
Helix VLT Tax Certification Statement Rev. D
Helix VLT Spec Rev. B
Helix VLT Spec Rev. A
Helix VLT Tax Certification Statement Rev. F
Installation & Operation Manual
Helix VLT IOM Rev. O
Helix VLT IOM Rev. M
Helix VLT IOM Rev. L
Helix VLT IOM Rev. K
Helix VLT Floor Stand Kit Instructions Rev. B
Helix VLT IOM Rev. J
Helix VLT IOM Rev. I
Helix VLT IOM Rev. C
Helix VLT IOM Rev. B
Helix VLT IOM Rev. A
Kit Instruction
Helix VLT Connection Instructions for Additional Devices Rev. A
CSD-1 Kit Installation Instructions Rev. A
Boiler Gas Conversion Kit Instructions NG to LP Rev. D
Options
Helix VLT Tax Certification Statement Rev. E
Helix VLT Tax Certification Statement Rev. B
Helix VLT Tax Certification Statement Rev. A
Parts Lists
Helix VLT Parts Rev. E
Helix VLT Parts List Rev. J
Helix VLT Parts List Rev. I
Helix VLT Parts List Rev. H
Helix VLT Parts Rev. D
Helix VLT Parts Rev. B
Helix VLT Parts Rev. A
Helix VLT Parts Rev. G
Helix VLT Parts Rev. F
VLT, Parts List, Rev. 4/16
Specification/Performance
Helix VLT Spec Rev. C
Submittal
Helix VLT Submittal Rev. D
User Manual
Helix VLT User’s Manual Rev. E
Helix VLT User’s Manual Rev. C – 09/2011
Helix VLT User’s Manual Rev. F
Helix VLT User’s Manual Rev. B – 06/11
Helix VLT User’s Manual Rev. A
Helix VLT User’s Manual Rev. B
Helix VLT User’s Manual Rev. C
VLT User’s Manual Rev. D
Warranty
Helix VLT Standard Manufacturer´s Warranty Rev. A
Dunkirk Consolidated Boiler Warranty Rev. D
Dunkirk Consolidated Boiler Warranty Rev. E
Helix VLT Additional Warranty Rev. C

product-1006

Yes, expensive but appears to work well.

Charles Fitzgerald
Product Reviewed:
Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler
product-1006

Good design. Clean unit. No wasted space in cabinet. Appreciate the “English” control panel (vs. obscure coding). Very quiet and compact.

Unit looks to be well built. I am an engineer/operator, and appreciate the design and assembly of the unit.

John Steiner
Product Reviewed:
Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler
product-1006

Very nice and clean installation, doesn’t require much room.

User friendly.

Brad King
Product Reviewed:
Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler
product-1006

Yes I would recommend this product. Great value and easy to install.

Antonio Pereira
Product Reviewed:
Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler