heating for commercial sized spaces

fan heater for large commercial areas air blower heated by hot water, from an oil, gas or s/f boiler massive 23m range 3/4" flow and return female connections, (3/4 sized feed pipework required) 240v power supply required to run fan massive 21.4kw output based on 90 o C flow / 70 o C return temperature height 598mm, width 636mm, depth 320mm bracket included for wall or ceiling mounting, tiltable moveable lourves on front face, to direct heat aluminium and copper heat exchanger robust expanded epp casing (black) 3 speed fan 2400, 3100, 3600 m3/hr respectively water capacity .63 of a litre maximum temperature of heating agent 120 o C maximum water pressure up to 16 bar rated maximum current .83amp motor speed 750, 1050, 1400 rpm respectively motor power 120, 150, 190 watts respectively motor ip54 rated weight 11.5kg (empty unit) noise level at respective fan speed 42, 48, 54 db 24month warranty total 625eur add air temperature / speed controller for + 50eur