High pressure packaged hot water boiler TERNOX 2S Low NOx

High pressure packaged hot water boiler, three-pass fire tube, horizontal design.

TERNOX 2S Low NOx is a family of packaged smoke tube hot water boilers, genuine three-pass, and wet back. Standard safety pressure up to 6 bar (higher pressure available on request) and output from 2200 to 15000 kW. It can be operated with liquid or gaseous fuels. Designed and manufactured according to EN 303-1. CE certification.

Design features

By means of the three-pass design the smoke gases in the combustion chamber are diverted to the front through the first set of fire tubes by the reversing chamber; then reversed again by the frontal smoke box to the second smoke tube sections and discharged through the chimney connection. The appliance is designed to ensure low heating loads in the combustion chamber, low superficial loads and low NOx emissions (with Low NOx burners).

• Boiler body: is made of a cylindrical shell and a wet back furnace, welded to tube plates, made of high quality steel. All the materials have certificates attesting their chemical and mechanical characteristics, the controls are carried out during each production stage, and, theirs suitability for use as well. The welding seams are carried out by qualified personnel in compliance to certified procedures. Once the boilers have been manufactured they are subjected to hydraulic testing.
  
• Smoke tubes: made of high quality steel, are welded to tube plates, and are without helical turbulators.
• Reversing chamber: is built in welded steel plate, completely water-cooled, and connected to the rear smoke-box.
• Front door: is built in welded steel plate, completely cladded internally with a layer of insulation material and with a layer of high density refractory material. One or two doors are present according the boiler’s capacity, for cleaning and inspection. Close to the burner hole is present a self-cleaning sight glass for combustion control during boiler operation.
• Rear smoke-box: is built in welded steel plate, completely cladded internally with a layer of insulation material and with a layer of high density refractory material. Door for cleaning and inspection is present as well. Complete with an horizontal chimney connection with a diameter sized to the boiler’s output. The rear smoke-box can be accessorized with and external economizer or condenser.
• The base: is built with a steel frame, welded to the tube plates. 
• Walkway: positioned on the top part of the boiler, is made of steel, covered with chequered plate and completed; on request with handrail and access ladder.
• Insulation: the shell is thermally insulated with a rock wool cladding binded with high density, thick thermosetting resins, suitably supported and covered externally in aluminum.

Standard equipment (1)

• Blind burner plate.
• Lifting lugs.
• Document folder enclosing:
• - Installation, operation and service manuals.
• - Water characteristics: requirements concerning the quality of water supply, the water in the boiler, frequency and type of sample tests to do.

 (1) The quantity and the model may vary according to the configuration.

Product plus values

• FLEXIBILITY thanks to the certification in output range
• LOW EMISSIONS NOx < 120 mg/kWh
• FURNACE BOTTOM completely wet
• JUST ONE FRONT DOOR (up to the model 10200) with self centring closing system completely adjustable
• TWO FRONT DOORS (from model 12500) tube bundles cleaning facility
• DOOR INTERNAL INSULATION in super light recyclable refractory concrete
• BODY INSULATION with anti-tearing mineral wool mattress
• BOARD PANEL thermo-mechanical or electronic
• POSSIBLE COMBINATION with one/two stage or modulating burners, operated on gas/LPG, light oil or heavy oil
• EASY TRANSPORTATION thanks to the upper lifting lugs and the strong frame side members

Optional accessories

• ECONOMIZER to increase boiler efficiency, available either for gas or light oil fuel.
• CONDENSING heat recovery unit, available for gaseous fuel only.
• BOARD PANELS FLAT_W
• BOARD PANELS IML_W
• BOILER SAFETY KIT: instrument wood log to be mounted on the boiler flow, complete with all connections required for the on-site safety and control instrumentation.
• LADDER AND WALKWAY KIT: ladder and walkway with carbon steel railing, painted with special rust-proof paint and welded by joints that ensure the correct coupling of every element.
• HIGH EFFICIENCY OPTION: option to supply a generator with 94-95% efficiency levels.