2-Way pump unit with recycling thermic valve for solid fuel boilers
The unit for 1/2” (130 mm) circulating pumps consists of:
SUPPLY:
Flanged ball valve with non return valve 20 mbar (which can be excluded by rotating the handle by 45°) supplied with in-handle thermometer (coded red; 0°C-120°C).
“T” connection for thermic valve.
Connection.
RETURN:
Connection.
Recycling thermic valve with the sensor dipped into the fluid. Start opening temperature: 60°C (F3), 45°C (F4) and 55°C (F5).
Synchronous pre-wired circulating pump with cable 2 m. long (for the models that include it).
Flanged ball valve supplied with in-handle thermometer (coded blue, range 0°C-120°C).
Centre distance 90 mm. EPP insulation box (Measurements: 180x302x142 mm).
PN 10, max temperature 100°C (unit without pump).
Connections: 3/4” Female to the heat source. 3/4” Male with swivel tang to the user.
FIELD OF UTILIZATION:
For power up to 28 kW (with Δt 20 K) and maximum flow 1200 l/h.
Kvs Value: 2,8.
Approximate data calculated with a 6 m nominal lifting power circulating pump.
For an accurate measuring or for higher flows, please refer to the diagram.
Available recycling thermic valves:
Temp. of opening start 60°C (F3)
Temp. of opening start 45°C (F4)
Temp. of opening start 55°C (F5)
Circulating pumps:
Wilo Yonos Para RS 15/6 RKC (C6)
Grundfos UPM3 AUTO L 15-70 (UL7)
Wilo Yonos Para RS 15/7,5 RKC (C8)

We suggest you to install two isolating valves Art. 552 3/4” (see "Distributor" section) before the pump unit to allow an easy service or replacement of the components of the unit.