Solar heat transfer unit WT20 and WT30

Ready-to-mount, compact unit for transferring heat from the primary circuit to the secondary circuit. Simple installation and maintenance. Various power outputs available. Primary side with all the advantages of the Watts solar control units, for high-flow and low-flow systems, flow sensor in brass casing, including safety unit, wall bracket with corrugated pipe connection and coupling for expansion vessel with membrane. Stable metal wall bracket. EPP heat insulation. Optional: Mixing valve module for stratified loading. Circulation pumps and controllers: various types and models.