HELIOTHERME 4000® Axial air heaters TPL determination and selection example (Destratifier) S = Supply (released at the top of the building) Selection example: TR= Temperature under roof Supply under building roof = S = 45,000 kcal (52,200 Watts) Temperature under roof = TR = 30 °C TW = Temperature setpoint in the work area Temperature setpoint in the work area = TW = 16 °C A Calculated flow rate Calculated flow rate for destratifiers = 45 000 0.3 x (TR-TW) for destratifiers = 0.3 x (30-16)= 10714 m/h3 So: 2 x TPL 4500 at HS or 1 x TPL 4630 at HS. TPL air flow and acoustic performance TPL 4400 4450 4500 4630 230/400V-3Ph-50 Hz Motor HS LS HS LS HS LS HS LS (3-phase 400V coupling) r × r × r × r × 230 V-1-Ph-50 Hz AC and HEE motor Direct - Direct - Direct - Direct - Flow rate m3/h 4400 3000 6000 4100 8000 5500 11500 8800 Air stream m 15 8 14 9 16 10 19 14 Sound pressure dB(A) 54 43 56 46 57 47 55 50 Specifications determined using the following information: Air stream:* with JET+ diffuser for a residual speed of 0.1 m/s Sound pressure: * measured 8 metres from unit, directivity 2, attenuation of 26 dB CATALOGUE 2021 187 187