Small parts

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Proven accessories

More detailed information on these and other accessory parts from the KÜNZEL assortment can be found in our “Heating with Wood” brochure and our price list (see right below the “Download” section).

Thermomix valve

The valve for raising the return temperature (return raise) is included with each boiler system. It is an important requirement for a long boiler service life. Up to 50 kW boiler power can be used.

ZPS

The circulation pump controller is an intelligent piece of electronics that helps save energy. It ensures that the warm water circulation pump is only switched on when truly needed. Savings potential: Approx. 75 Euros per year.

Instrument kit 35-60°C

Including a thermostatic mixing valve for restricting the water temperature. This decreases calcifications and the risk of scalding. PSW and PSD recommended for all combination accumulators.

Automix compact controller

Weather-dependent flow temperature controller for radiators or radiant floor heating systems. Consisting of: Electronics, quartz clock, adjustable day and week program, LED operating display, servo motor, flow and exterior sensor.

Automatic ignition

Standard for all KÜNZEL wood gasifier boilers.

Frost protection guarantee

Electrical heating rod for frost protection of the heating system. Guarantee (see image) for PL pellet boiler. Available for screwing appropriate screw-in heating bodies into accumulator types HSR, HSR/2 and PSW.

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