The OKCE NTR/2.2 kW heater is equipped with a single-phase 2.2 kW heating element and is available in capacities of 100 and 125 liters.
The combination of an indirect heater with one (NTR) or two (NTRR) exchangers and a properly selected heating unit allows the heater to function in a combined-heating mode using electricity and another source of heat. The tanks are available in capacities of up to 1000 liters.