M2 MIX33 PDC DN25
2-WAY PUMP UNIT WITH 3-WAY MIXING VALVE WITH BUILT-IN BY-PASS AND FLOWMETER
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 (red ring, range 0°C-120°C).
Return
• Flanged ball valve with 20 mbar check valve (which can be excluded by rotating the handle by 45°) supplied with in-handle thermometer (blue ring; 0°C-120°C)
• Straight flowmeter with flow regulation, male threaded on one end and with swivel nut on the other, 1”1/2 threaded. Direct reading of the flowrate through the graduated scale.
• “T” Connection for mixing valve.
• Connection.
Centre distance 125 mm. EPP insulation box (Dimensions: 250x380x170 mm).
PN 10, max temperature 110°C (unit without pump).
External connections: 1” Female.
FIELD OF USE
For power up to 33 kW (con ∆t 15 K) and maximum flow rate 1900 l/h.
Valore Kvs: 5.7. Approximate data calculated with a 6 m head circulating pump.
Code: 20355R-M33-42
With circulating pump: 20355R-M33-42-(P6/A6/P8)
Available circulating pumps:
Wilo Para 25/6 SC (P6)
Grundfos UPM3S Auto 25-60 (A6)
Wilo Para 25/8 SC (P8)
Flow rate ranges
42 = 5-42 l/min
