The X-ternal is available in a 12-20kW output, it is an externally mounted wall hung oil fired boiler with many of the advantages and qualities associated with other HRM models. It benefits from using tried and tested components found throughout the HRM Range. (Also available with a Brown coloured case, see product code X2 Brown).

The new X2 is a fully X-Ternal wall hung boiler with a new Low Nox burner to conform to the latest EU Directives regarding low levels of Nitrogen Oxide. These models are based on the Wallstar 2 and share the same water jacket and burner thus ensuring they are a reliable alternative if a Wallstar 2 is not a viable option. The boiler comes with a remote lock out switch that can be sited within the property and the compact dimensions mean it can be fitted conveniently on most external walls.

Product Code X2 (Brown or Cream)
Number of Bedrooms3, 4
Number of Bathrooms1, 2, 3
Heating SystemOpen Vented, Sealed
Condensate Drain20mm
Condensate TrapIncluded
Drain Socket0.5" BSP
Flow and Return1" BSP
Frost ThermostatIncluded
FuelClass C2 (28 Second Kerosene)
Fuel Connection10mm
Integrated Balanced Flue Included
Manual Reset High Limit ThermostatIncluded
Max Installation Height2.5m From Tank Outlet
Non-Return ValveIncluded
Oil FilterIncluded
Telescopic Flue & Wall Duct Range210-340mm
(+100mm Extension Kit Available)
Tigerloop / DeareatorNot required
Warranty2 years parts & labour,
3 addl. years on Water Jacket
Height Width Depth
Outside Casing 725mm 670mm 410mm
Technical Information 12kW 14kW 16kW 18kW 20kW
Nozzle 0.45 80O EH 0.5 80O EH 0.5 80O EH 0.55 80O EH 0.65 80O EH
Oil Pressure 100 PSI 100 PSI 120 PSI 125 PSI 110 PSI
CO2 12% +/-1% 12% +/-1% 12% +/-1% 12% +/-1% 12% +/-1%
Inner Adjustment Assembly No. 5 No. 5 No. 5 No. 10 No. 10