Cordivari BOLLY 1 ST INOX Stainless Steel Single Coil Calorifier 300 L

The Cordivari BOLLY 1 ST INOX is a domestic hot water calorifier built entirely in 316L stainless steel, with one fixed 316L stainless steel heat exchanger. The 300 litre model holds 293 litres net and heats water indirectly through a 1 m² coil fed from a boiler or other primary heat source, with all connections aligned front and back for a neat installation. For a coated mild steel alternative, see the Polywarm single coil 300 L calorifier.

A magnesium anode provides cathodic protection, the inspection flange is stainless steel and the silicone gaskets are tested to Directive 98/83/EC for drinking water. Maximum working pressure is 6 bar on the tank and 12 bar on the coil, with maximum temperatures of 95 °C and 110 °C respectively. The 300 litre tank is 650 mm in diameter, 1,495 mm high and weighs 56 kg, with hard polyurethane foam insulation and an energy efficiency class of B. A 1½ inch connection takes an electric immersion heater.

Harold Engineering supplies, installs and commissions Cordivari calorifiers and buffer tanks as part of complete heating systems from our Dublin and Galway bases, with 15 OEM trained field service engineers and a 24 hour breakdown callout service. Contact us to size a calorifier for your site.