2-Way pump unit with 3-way mixing valve and electronic circulating pump. Built-in climatic controller for a mixed heating circuit and hot domestic water
Pump unit with climatic controller for one mixed heating circuit and to deliver hot domestic water (HDW); control of contact with bolier (heat source) for its starting and turning off. The unit, by reading the outside temperature, sets the correct supply temperature of the plant on the basis of the set up climatic curve. The unit is supplied completely assembled and tested. No wiring operations are needed: the circulating pump, the actuator for mixing valve and climatic controller are pre-wired for a pratical and effective installation.
The unit for 1” (180 mm) circulating pumps consists of:
SUPPLY:  
Connection.
Isolating flanged ball valve with unions.
3-way mixing valve with 3 points servomotor.
Electronic circulating pump: Wilo Yonos PICO 25/1-6 or Wilo Yonos PICO 25/1-8.
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.
Isolating flanged ball valve with unions.
Connection.
Centre distance 125 mm. EPP insulation box (Measurements: 250x466x215 mm).
A special back plate fixes the unit to the insulation box and it allows a quick fitting to the wall or to the solar cylinder.
PN 6, max temperature 110°C.
(max. 40°C ambient temperature and 95°C fluid temperature).
External connections:  1” Female.
FIELD OF UTILIZATION:
For power up to 35 kW (with Δt 20 K) and maximum flow 1500 l/h.
Kvs Value: 6,0.
Approximate data calculated with a Wilo Yonos PICO 25/1-6 circulating pump (6 m nominal lifting power).
For power up to 20 kW (with Δt 8 K) and maximum flow 2150 l/h.
Kvs Value: 6,0.
Approximate data calculated with a Wilo Yonos PICO 25-1-8 circulating pump (8 m nominal lifting power).
For an accurate measuring or higher flow, please refer to the curves of the circulating pumps (constant Δp and variable Δp).