Superheated water boiler SUHR' OR

Superheated water boiler, three pass reversed flame, smooth pipes with turbulators, 90% efficiency (1).

SUHR’ is a family of packaged smoke tube superheated water boilers, three pass reversed flame, wet back. Standard safety pressure up to 5 or 10 bar (higher pressure available on request) and output from 140 to 2900 kW. It can be operated with liquid or gaseous fuels. Every model is complete with regulations and safety accessories for automatic operation and easy commissioning.

In compliance to the current laws, each superheated boiler undergoes a conformity assessment, carried out by a Notified Body.

The conformance to the essential safety requirements demanded by the European Pressure Equipment Directive 2014/68/UE (PED) is guaranteed by the CE mark.

Design features

By means of the reverse flame principle the smoke gases in the combustion chamber are diverted to the front, then reversed again to the smoke tube sections and discharged through the chimney connection. The appliance is designed to ensure low heating loads in the combustion chamber and low superficial loads.

• Boiler body: is made up of a cylindrical shell and a wet back furnace, 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 and are subjected to Non Destructive Tests, in accordance to an internal “Manufacturing and Control” program. Once the boilers have been manufactured they are subjected to hydraulic testing in accordance to the requirement 7.4 – Annex I, laid down in the Directive 2014/68/UE (PED).
• Smoke tubes: made of high quality steel, are welded to tube plates. Pipes are equipped with helical turbulators.
• 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. The door is fitted with hinges which enable it to be easily adjusted and quickly opened. Moreover, the door is fitted with a self-cleaning sight glass for combustion control during boiler operation.
• Rear smoke-box: is built in welded steel plate and fixed on to the tube plate by nuts for an easy access to it. It is fitted with a small door for cleaning purposes and the horizontal flue connection (vertical on request), with a diameter sized to the boiler’s output. The rear smoke-box can be accessorized with and external economizer.
• The base: is built with a steel frame, welded to the tube plates and closed with steel plates. 
• Insulation: the shell is thermally insulated with rock wool cladding, suitably supported and covered externally in 10/10 thick enamelled aluminum. 

Standard equipment (2)

• n. 1 or 2 spring loaded safety valves (according boiler’s capacity).
• n. 1 manual draining group.
• n. 1 large dial thermometer.
• n. 1 large manometer with 3 way cock for calibration.
• n. 2 working thermostats.
• n. 1 safety pressure switch with manual reset.
• n. 1 safety thermostat with manual reset.
• Blind burner plate.
• Carbon steel turbulators.
• Lifting lugs.
• Control board panel IP55 400V - 3+N - 50Hz
• Document folder enclosing:
• Manufacturer's Declaration of Conformity in compliance with the Annex VII of the European Directive 2014/68/UE (PED)
• Installation, operation and service manuals.
• Certificates of safety components.
• Control board’s electric schemes and related Declaration of Conformity.
• Water characteristics: requirements concerning the quality of water supply, the water in the boiler, frequency and type of sample tests to do.

Optional

• BOARD PANEL IMC_SH
• BOARD PANEL IML_SH
• 24 h EXEMPTION KIT
• 72 h EXEMPTION KIT

(1) This value is intended without economizer and may change according working pressure and load conditions.

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