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M2 Mιχ 3

M2 Mιχ 3

M2 Mιχ 3
2-Way pump unit with 3-way mixing valve

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

SUPPLY:

  • Connection.
  • 3-way mixing valve.
  • Synchronous or asynchronous circulating pump (for models with pump).
  • 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 35 kW (with Δt 20 K) and maximum flow 1500 l/h.
Kvs Value: 6,0.
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.
Synchronous circulating pumps:
Wilo Yonos Para RS 25/6 (Y6)
Grundfos Alpha 2L 25-60 (A6)
Wilo Yonos Para RS 25/7,5 (Y8)
Asynchronous circulating pumps 
(only for non-EU markets):
 Wilo Star RS 25/6 (W6)
Wilo Star RSG 25/8 (RSG8)*

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.

 

MODEL WITH BUILT-IN M21 SERVOMOTOR
Servomotor M21: 3 points servomotor for mixing valve. Bidirectional, reversible with fixed limit switches for an operating range of 90°. 230V, 2 min., torque: 5 Nm. IP42.
Several models available: see the section “Servomotors”.


MODEL WITH BUILT-IN CMP25-2 CLIMATIC CONTROLLER
CMP25-2 climatic controller: “touch screen” climatic controller with servomotor for mixing valve, 3 points. Bidirectional, reversible with fixed limit switches for an operating range of 90°. 230V, 2 min., torque: 10 Nm. IP42.


Versions available with reduced Kvs (using the special kits, see Correlated Articles). In the table below the resulting Kvs of the unit is shown, with the relevant maximum values of power and flowrate:

Mixing valve Kvs
Pump unit Kvs
Power Flow rate
 10,0 (standard) 6,0 (standard) 35 kW 1500 l/h
6,3 5,0 29 kW 1250 l/h
4,0 3,5 20 kW 850 l/h
2,5 2,4 14 kW 600 l/h

M2 MIX3:
Code 1”: 20355(R/L)-M3 - with circ. pump: 20355(R/L)-M3-(Y6/A6/Y8/W6/RSG8)
Code 1”1/4: 20455(R/L)-M3 - with circ. pump: 20455(R/L)-M3-(Y6/A6/Y8/W6/RSG8)

M2 MIX3 with built-in M21 servomotor:
Code 1”: 20355(R/L)-M3-M21 - with circ. pump: 20355(R/L)-M3-(Y6/A6/Y8/W6/G8)-M21
Code 1”1/4: 20455(R/L)-M3-M21 - with circ. pump: 20455(R/L)-M3-(Y6/A6/Y8/W6/G8)-M21

M2 MIX3 with built-in CMP25-2 climatic controller:
Code 1”: 20355(R/L)-M3-CMP - with circ. pump: 20355(R/L)-M3-(Y6/A6/Y8/W6/G8)-CMP
Code 1”1/4: 20455(R/L)-M3-CMP - with circ. pump: 20455(R/L)-M3-(Y6/A6/Y8/W6/G8)-CMP

“R” Codes: pump units with right supply. f.i. 20355R-M3; “L”Codes: pump units with left supply. f.i. 20355L-M3.
(*) The pump units with circulating pump Wilo RSG 25/8 (RSG8/G8) are not reversible. They are available only with right supply way.



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