Selection of a NKP heater model compatible with VUT 350 VB EC A11 air handling unit. The rated winter outside air temperature is -15 °C. The rated air capacity is 220 m3/h. Starting from the rated winter outside air temperature (1) draw a horizontal line till the air capacity axis (2). NKP heater with heating capacity 1200 W is able to provide efficient heat exchanger freeze protection.
NKP 160-1.2-1 with the diameter matching the spigot diameter of the air handling unit VUT 350 VB EC A11 is a suitable model.