Robur Next-G Condensing Gas Unit Heaters 19.5 to 90 kW

The Robur Next-G series is a range of wall-mounted condensing gas warm air unit heaters for workshops, industrial and commercial buildings. Heat output modulates automatically from 100% down to 30%, and condensing operation gives efficiencies of 96 to 97.8% at nominal input and up to 106.8% at minimum input. The standard axial models are the Next-G 20, 30, 35, 45, 60 and 90, covering nominal heat inputs from 19.5 to 90 kW with air flows of 2,300 to 9,100 m³/h and horizontal throws of 15 to 38 m. Next-G EC versions (20 to 90 EC) use electronically controlled brushless fans that can also modulate air flow, and the Next-G 30 C and 60 C use centrifugal fans with a duct flange for ducted installations.

Each heater has an aluminium alloy heat exchanger and a premix burner with an optimised air to gas ratio for reduced CO and NOx emissions. The units are Type C sealed appliances, drawing combustion air from outside through an 80 mm intake alongside an 80 mm flue, and are certified for natural gas blends containing up to 20% hydrogen. An LPG conversion kit, condensate drain siphon and room temperature sensor are supplied as standard. Control options range from basic 1-Key and 2-Key controls and thermostats to Robur’s Thermoregulator, Modbus or 0-10 V, and the Genius system, which manages up to 100 units across 30 zones. For non-condensing models see the Robur Next-R gas unit heaters.

Harold Engineering supplies, installs and commissions Robur heating equipment 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 heaters for your building.