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2-way pump unit with fixed temperature mixing valve

2-way pump unit with fixed temperature mixing valve

 

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

 

SUPPLY:

  • Connection.
  • Thermostatic mixing valve with temperature setting range, models F1, F2, F3 and F4..
  • Circulating pump with press-cable (for the models with 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: 250x380x190 mm).

PN 10. Max Temperature 110°C.

External connections: 1” or 1”1/4 Female.

 

FIELD OF UTILIZATION:

For power up to 32 kW (with Δt 20 K) and maximum flow 1400 l/h.

 

Kvs Value: please refer to the table below.

For an accurate measuring or higher flows, please refer to the curves shown in the technical section.

 

Available thermostatic mixing valves:                                           Available circulating pumps:

Temperature setting range from 20 to 43°C (F1-F3)                    Wilo Star RS 25/6 (W6)

Temperature setting range from 35 to 60°C (F2)                         Grundfos UPSO 25-65 (G60)

Temperature setting range from 45 to 65°C (F4)                         Wilo Star RSG 25/8 (RSG8)*

 

 

Approximate data for underfloor heating and radiators heating systems

Model

Field of

regulation  

t

temp. 

Kvs 

Approximate power

and flow of the installation

Recommended

circulating pump

Residual

lifting power

Approximate surface

of the underfloor heating system

F1 20-43  ºC 8 ºC 1.5 4,5 kW - 500 l/h

Wilo Star

RS 25/6 (W6)

4.5

mH2O

Up to 50 m2
F2 35-60 Cº 20 ºC 1.5 11 kW - 500 l/h

Wilo Star

RS 25/6 (W6)

4.5

mH2O

 
F3 20-43 ºC 8  ºC 3 13 kW - 1400 l/h

Wilo Star

RSG 25/8 

5

mH2O

Up to 150 m2
F4 45-60 ºC 20 ºC 3 32 kW - 1400 l/h

Wilo Star 

RSG 25/8 

5

mH2O

 

 

To assure an optimum working, with an exact temperature regulation, the difference of temperature between the inlet hot water (red) and the mixed outlet water (red-blue) must be 10 K or more (see picture at right).

 

 

 

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.

 

 

M2 FIX3:

Code 1”: 20355(R/L)-(F1, F2, F3, F4) - with circ. pump: 20355(R/L)-(F1, F2, F3, F4)-(W6/G60/RSG8)

Code 1”1/4: 20455(R/L)-(F1, F2, F3, F4) - with circ. pump: 20455(R/L)-(F1, F2, F3, F4)-(W6/G60/RSG8)

 

 

“R” Codes: pump units with right supply. f.i. 20355R-F2; “L”Codes: pump units with left supply. f.i. 20355L-F2.

(*) The pump units with circulating pump Wilo RSG 25/8 (RSG8/G8) are not reversible. They are available only with right supply way.






  • Model: M2 FIX3