ICI Caldaie BAX unit is a condensing heat recovery unit built from AISI 316 Ti stainless steel. The BAX unit must be located after the boiler flue gas exit output, exclusive for natural gas or LPG fired boiler/burners. When the flue gas passes through the recovery unit, their temperature drops remarkably and if the system return temperature is below 57 °C, condenses the water contained vapour by exploiting the latent heat of condensation.

The recovery unit must be hydraulically connected in series to matching boiler; the increase in water temperature is only by few Celsius degrees and the check of work minimum temperature permitted by the boiler is mandatory. 

• Heat exchange surfaces made from AISI 316 Ti stainless steel, welded with TIG method, consisting of stainless plates characterized by a particular corrugated shape being able to increase heat exchange surface, and facilitate droplet condensate formation allowing adequate drainage.
• The boiler shell with system boiler flow and return connections, with external mineral wool insulation and embossed aluminium cladding.
• AISI 316 Ti stainless steel front and back smoke complete with flue gas and condensate drain connections
• Height adjustable support