Description
The Bolly 2 ST FB series boiler is designed to maximize the efficiency of systems that use biomass generators, traditional boilers or integrations with solar panels.
The boiler has two fixed coils with a very large heat exchange surface, allowing for the simultaneous connection of two different heat sources (for example, solar panels on the lower coil and a boiler on the upper coil). The large exchange surface ensures rapid and complete heat transfer even with a small temperature difference.
An advantage in installing the Bolly 2 is the possibility of having connections aligned front/back, thus allowing installation in tighter spaces and also allowing easy access for any maintenance.
Furthermore, the boiler has rigid polyurethane foam insulation to minimize heat loss, keeping the DHW hot for longer and contributing to the B energy classification .
Always check during installation that the product is always installed protected from atmospheric agents, on a suitably solid base, checking, before making the connections, that there is sufficient space for the extraction of the magnesium anode, any resistance
Datasheet
• Production and storage of domestic hot water (DHW)
• Hydraulic connections on the back, front connections and flange are aligned
• Made of Polywarm® coated steel (ACS - EN 16421 certifications) suitable for drinking water pursuant to Ministerial Decree no. 174 of 06.04.04
• With 2 fixed heat exchangers in Polywarm coated steel
• Rigid insulation in expanded polyurethane with high thermal insulation
• Magnesium anode
• Drain through sleeve on the bottom
• Food-grade silicone rubber gaskets (DM n.174 of 2004) and operating resistance up to 200°C
• Carbon steel counterflange with Polywarm treatment
• Exchanger surfaces (upper - lower) m² 0.4 - 0.6
• Energy class C
• Pmax accumulation 10 bar
• Tmax accumulation 90 °C
• Pmax exchanger 12 bar
• Tmax exchanger 110 °C
Package Contents:
• 1 Bolly 2 ST FB WB 500 Lt boiler complete with insulation
Everything not marked must be ordered separately.






