Stationary hot water heater with two exchangers and a side flange complete with a TT axiliary electric heating (electric heating flange unit TPK or el. screw-on heating uni TJ 6/4").

The combination of an indirect heater with one or two exchangers and a properly selected heating unit allows the heater to function in a combined-heating mode using electricity and another source of heat.

More about the OKC NTRR/BP heater and the suitable heating units TPK or TJ 6/4"»