Robur Next-R Gas Unit Heaters 15 to 84 kW

The Robur Next-R series are modulating gas fired unit heaters with a premix burner, for heating industrial and commercial spaces such as workshops, warehouses and laboratories. Seven axial fan models cover 15.5 to 84 kW heat input with throws of 13 to 40 m, plus vertical downflow and ductable centrifugal versions, with efficiency up to 97.8% at minimum input.

Models

Robur Next-R 15, 20, 30, 40, 50, 60 and 80 axial fan unit heaters; 30 V to 50 V downflow and 30 C to 80 C ductable centrifugal versions

Heat input

15.5 to 84.0 kW nominal, 10.3 to 54.0 kW minimum

Heat output

14.1 to 76.4 kW nominal, 9.9 to 52.6 kW minimum

Efficiency

91 to 91.5% at nominal input, up to 97.8% at minimum input

Air flow and throw

2,250 to 9,000 m³/h, horizontal throw 13 to 40 m (axial models)

Burner

Premix burner with self-adapting air to gas ratio, low NOx and CO, 2-level modulation with the Thermoregulator

Gas

Natural gas G20 1.64 to 8.89 m³/h, LPG G31 1.20 to 6.53 kg/h

Flue

80 mm flue exhaust and combustion air intake

Electrical and weight

230 V single phase 50 Hz, 0.18 to 0.60 kW absorbed, 26 to 91 kg (axial models)

Brand

Robur, Genius centralised control for up to 100 units

The Robur Next-R series is a range of gas fired warm air unit heaters with a premix modulating burner, built for efficient heating of industrial spaces of any size, including workshops, warehouses and laboratories without flammable materials. Seven axial fan models, the R 15, R 20, R 30, R 40, R 50, R 60 and R 80, cover nominal heat inputs from 15.5 to 84 kW, with air flows of 2,250 to 9,000 m³/h and horizontal throws of 13 to 40 m. Vertical downflow versions (30 V, 40 V, 50 V) and ductable centrifugal fan versions (30 C, 40 C, 50 C, 80 C) are also available.

The premix burner uses a self-adapting air to gas ratio for low NOx and CO emissions, and with Robur’s Thermoregulator the heaters modulate automatically between two output levels. Efficiency is 91 to 91.5% at nominal input, rising to as much as 97.8% at minimum input. Robur’s Comfort Zone heat exchanger design is intended to reduce heat stratification, and the units are around 25% lighter than comparable heaters, at 26 to 91 kg for the axial models. They run on natural gas or LPG with an 80 mm flue and air intake, and can be managed individually or centrally through Robur’s Genius system, which controls up to 100 units. For condensing models see the Robur Next-G condensing heaters, and for other options see our tubular 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.

  • Premix modulating burner: Self-adapting air to gas ratio for low NOx and CO emissions.
  • Seven axial models: 15.5 to 84 kW nominal heat input, 14.1 to 76.4 kW output.
  • Long throw: Horizontal air throw from 13 m up to 40 m on the R 80.
  • High efficiency: Up to 97.8% at minimum input, 91 to 91.5% at nominal input.
  • Three fan options: Wall-mounted axial, vertical downflow and ductable centrifugal versions.
  • Lightweight: Around 25% lighter than comparable heaters, from 26 kg.
  • Genius control: Centralised management and remote monitoring of up to 100 units.
  • Gas or LPG: Runs on natural gas or LPG with an 80 mm flue and air intake.
Models

Robur Next-R 15, 20, 30, 40, 50, 60 and 80 axial fan unit heaters; 30 V to 50 V downflow and 30 C to 80 C ductable centrifugal versions

Heat input

15.5 to 84.0 kW nominal, 10.3 to 54.0 kW minimum

Heat output

14.1 to 76.4 kW nominal, 9.9 to 52.6 kW minimum

Efficiency

91 to 91.5% at nominal input, up to 97.8% at minimum input

Air flow and throw

2,250 to 9,000 m³/h, horizontal throw 13 to 40 m (axial models)

Burner

Premix burner with self-adapting air to gas ratio, low NOx and CO, 2-level modulation with the Thermoregulator

Gas

Natural gas G20 1.64 to 8.89 m³/h, LPG G31 1.20 to 6.53 kg/h

Flue

80 mm flue exhaust and combustion air intake

Electrical and weight

230 V single phase 50 Hz, 0.18 to 0.60 kW absorbed, 26 to 91 kg (axial models)

Brand

Robur, Genius centralised control for up to 100 units

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