2-Way pump unit with 3-way mixing valve with built-in by-pass

The unit for 1” (180 mm) circulating pumps consists of:

SUPPLY:
- Connection.
- 3-way mixing valve with adjustable by-pass. Through the by-pass (adjustable from the front part) it is possible to mix on the supply line a quantity of water coming back from the return line of the system.
- High efficiency synchronous pre-wired circulating pump (for the models that include it).
- Flanged ball valve supplied with in-handle thermometer (coded red, range 0°C-120°C).

RETURN:
- 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 blue; 0°C-120°C).
- “T” Connection for mixing valve.
- Connection.

Centre distance 125 mm. EPP insulation box (Measurements: 250x380x170 mm).
PN 10, max temperature 110°C (unit without pump).
External connections: 1” or 1”1/4 Female.

FIELD OF UTILIZATION:
For power up to 38 kW (with Δt 15 K) and maximum flow 2200 l/h.
Kvs Value: 7,0.
Approximate data calculated with a 6 m nominal lifting power circulating pump.
For an accurate measuring or for higher flows, please refer to the curves shown in the technical section.

Available circulating pump:
Wilo Yonos Para RS 25/6 (Y6)

We suggest you to install two isolating valves Art. 552 (see Correlated Articles) before the pump unit to allow an easy service or replacement of the components of the unit.