Gas Supply

  • Top Pipe connection with built-in drip leg saves material & time

Dunkirk’s Stainless Steel Heat Exchanger

  • Patent Pending 316L/444 stainless steel fin tube
  • Vertically mounted and self-cleaning
  • ASME certified to operate in applications up to 150 psi
  • Every heat exchanger is tested up to 375 psi
  • Built-In CSD-1 Compliant

Dunkirk Quality

  • Every boiler is test-fired at the factory
  • Complete combustion test is performed and a computer printout of the results are shipped with every boiler to ensure proper commissioning

8 year Limited Manufacturer’s Warranty

  • The VX 399 heat exchanger is simply the finest ever designed and as such we provide an 8-year factory warranty coverage
  • One Year Parts Warranty

CSD-1 Control package includes: UL listed LWCO w/Manual Reset.

Boiler Control Module: High Temperature limit w/Manual Reset. Outdoor Temperature Sensor included. 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 up to 16 boilers.)

User Display interface: Easy programming with text display.

Heat Exchanger: High grade 316L/444 Stainless Steel Fin Coil with Flame Sight Glass.

Combustion: Gas Valve with Premix Venturi and Blower, Durable Stainless Steel Mesh Modulating Burner with 5:1 turn down ratio, Direct Spark Igniter and Flame Sensor.

Electrical: Line Voltage Terminal Strip, High Voltage Junction Box and Transformer.

Other: 50 PSI Safety Relief Valve, Boiler Drain Valve and Condensate Drain with built in trap, Leveling Legs.

See Installation, Operation and Maintenance Manual for complete instructions