The X-ternal Floor Standing is ideal when one of our wall mounted boilers cannot be used. It shares the same principal design elements of an integrated balanced flue, compact dimensions and ease of installation and servicing. The X-ternal Floor Standing also comes complete with a Flue Guard as standard.

The new FS3 is a fully X-Ternal floor standing boiler with a new Low Nox burner to conform to the latest EU Directives regarding low levels of Nitrogen Oxide. The FS3 is based on the Wallstar 3 and share the same water jacket and burner thus ensuring they are a reliable alternative if a Wallstar 3 is not a viable option. The FS3 can be positioned in any way to suit most installation requirements. It comes with a flue guard and remote acting firevalve as standard and has easy access points for the flow and return pipes with a handy wall spacer and blanking plates.

Product Code FS3
Number of Bedrooms4, 5
Number of Bathrooms2, 3, 4
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 (incl. flue guard) Depth (excl. flue guard)
Dimensions 820mm 530mm 810mm 650mm
Technical Information 20kW 22kW 24kW
Nozzle 0.65 80O EH 0.65 80O EH 0.65 80O EH
Oil Pressure 110 PSI 120 PSI 130 PSI
CO2 12% +/-1% 13% +/-1% 13% +/-1%
Inner Adjustment Assembly No. 10 No. 10 No. 10