Wallstar Combi

The Wallstar Combi is the only through the wall oil-fired Combi on the market. The Combi shares the benefits of the conventional Wallstar and provides a complete central heating and hot water system mounted on the wall.The Wallstar Combi is suitable for the smaller property with a heating requirement of up to 18kW. Output for domestic hot water (DHW) is 24kW. A flow regulator of 10.5 litres per minute ensures at least 35˚C degree rise above mains water temperature.

The latest Low Nox Wallstar Combi comes supplied with a Low Nox burner to conform to the latest EU Directives regarding low levels of Nitrogen Oxide. It has the same highly compact dimensions as previous models, making it ideally suited for situations where space is at a premium. The new model is a direct replacement for any existing 25/19 and 24/18 models. The hole in the wall is the same size and the flow and return pipes are in the same position.

Product Code Wallstar Combi
Number of Bedrooms1, 2, 3
Number of Bathrooms1, 2
Heating SystemCombination
Circulating PumpGrundfos UMP3
Condensate Drain20mm
Condensate TrapIncluded
Drain Socket0.5" BSP
Expansion Vessel10 Litres
Flow and Return22mm
Frost ThermostatNot Required
FuelClass C2 (28 Second Kerosene)
Fuel Connection10mm
Integrated Balanced FlueIncluded
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
Inside Casing 900mm 475mm 400mm
Outside Casing 580mm 390mm Telescopic
Technical Information 24kW
Nozzle 0.75 80O EH
Oil Pressure 120 PSI
CO2 12% +/-0.51%
Inner Adjustment Assembly No. 20