HELIOTHERME 4000® Axial air heaters Operating limits Cooling mode Heating mode Steam mode Superheated water mode Water circuit Min. water inlet temp.: 5 °CMax. water inlet temp.: 110 °CMax.temp./Operating pressure:Max. water inlet temp.: 200 °C Max. operating pressure: 13 barMax. opeatigpessure: 13 bar 200 °C/16 bar Max. operating pressure: 16 bar Indoor temperature Tmax: 60 °C and Tmin -15 °C 230 V(+/-6 %)/50 Hz - 1 Ph 230 V(+/-6 %)/50 Hz - 1 Ph 230 V(+/-6 %)/50 Hz - 1 Ph 1-PH AC motor H4350: IP44 H4350: IP44 H4350: IP44 H4400 - 4450-4500-4630: IP 54H4400 - 4450-4500-4630: IP 54H4400 - 4450-4500-4630: IP 54 400 V(+/-6%) / 50 Hz - 3 Ph 400 V(+/-6%) / 50 Hz - 3 Ph400 V(+/-6%) / 50 Hz - 3 Ph 3-PH AC motor H4350: IP44 H4350: IP44 H4350: IP44 H4400 - 4450-4500-4630: IP 54H4400 - 4450-4500-4630: IP 54H4400 - 4450-4500-4630: IP 54 230 V (+/-6%)/50/60 Hz - 1 Ph 50/60 Hz - 1-Ph 1-PH EC motor IP54: H4300 and H4350 IP54: H4300 and H4350 IP 55: H4400-H4450- IP 55: H4400-H4450- H4500-H4630 H4500-H4630 196 196 CATALOGUE 2021