VX 399 Gas-Fired, Floor Mounted Modulating Condensing Boiler

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.