Fig. shows high-efficiency pump WILO YONOS PARA 25/6 Heating pump assemblies for increased return temperature with solid fuel boilers Your benefits With temperature-controlled condensation protection valve ossible preset temperatures: 45 °C, 55 °C, 60 °C P reduced amounts of condensate in the combustion process For voids deposits in the boiler and in the smoke vent A Pre-assembled, tightness-tested and heat-insulated assembly lass A high energy efficiency pump, ErP-Ready C odular system with flow at left or right, horizontal or M vertical installation ntegrated gravity brake in the ball valve of the flow line I Second ball valve in the return line allows for replacement of pump without draining the system Application Heating pump assembly for increasing the return temperature of the system water to the solid fuel boiler. This keeps the temperature in the heating boiler above the condensation point in all operating states. It also avoids deposits in the boiler and in the smoke vent Form-fit insulation: Many standard pumps can be installed without refitting of the insulation and increases the service life of the system. The risk of corrosion damage to the boiler and chimney fires resulting from soot deposits is reduced. The pump assembly is designed for a capacity of up to 32 kW and a flow rate of up to 1,400 l/h.

Solid fuel boiler Solid fuel boiler Solid fuel boiler Start mode (heating up of boiler) Transition phase when opening temperature is reached Regular operation When the boiler heats up, the thermal valve is fully closed in the direction of the consumer (inlet A). It remains closed until the liquid heated up by the boiler has reached the opening temperature of the thermal valve (e.g. 55 °C). During this time, the liquid coming from the boiler is recirculated in the small circuit (bypass B), which causes the boiler temperature to increase more rapidly. When the opening temperature is reached (e.g....