Winter Warm HR Series

The Winter Warm HR Series is a gasfired, condensing unit air heater with high efficiency, in 5 capacities (40kW – 150kW).

The Winterwarm HR is a condensing heater which combines the efficiency of indirect Winterw_HRheating with energy efficiency and comfort.

The condensing unit air heater which combines efficient heating with energy savings and high comfort.

Winterwarm HR-series Characteristics Winterwarm HR:

  • High efficiency (on ECA list)
  • Energy saving (up to 25% compared to conventional heaters)
  • Stainless steel heater exchange as standard
  • Modulating burner
  • Open-therm Control

What is OpenTherm control?

OpenTherm control communicates information between condensing central heating appliances; allowing the amount of heat provided by the boiler to be controlled to match the demand signal. OpenTherm modulation helps improve boiler efficiency by running at lower flow temperatures for longer periods.

For many years now, suspended unit air heaters have been employed worldwide to heat industrial buildings. Research from the ‘Gasunie’ (NL) regarding various industrial heating systems has confirmed that direct heated gas-fired air heating is one of the most efficient heating methods.

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Technical features

The HR Heater is a condensing unit air heater with axial fan, with efficiency of more than 106%. The premix burner allows the heater to modulate back to 20% of its maximum capacity. This suggests that the heater can adjust its heat output precisely to the demand received through the thermostat. Additional efficiency is realised by the vertical gradient control which measures the temperature gradient with a sensor in the heater and another in the room thermostat.

Should the temperature gradient increase above the set value, the unit will activate the fan ands bring down the warm air assembled underneath the ceiling, which will cause the burner to operate later. The heat exchanger of the HR is manufactured from high grade stainless steel and has a warranty period of 5 years. There are nine capacities available; ranging from 10kW to 120kW.

Flue Terminal Controls

The installation of the combustion air supply and the combustion gas discharge must meet the general regulations for high efficiency flue terminals. As the HR heater is provided with a flue booster, one can apply either a horizontal (wall) or a vertical (roof) flue terminal.

The length of the flue should not exceed 10m, considering that each 45˚ elbow counts as 1m length, and each 90˚ elbow counts as 2m length. The dimensions of the flue are either 80mm (HR 10-60) or 130mm (HR 80-120).

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