Wilo Helix FIRST V 22 Notice De Montage Et De Mise En Service page 17

5.2 Technical data
Maximum operating pressure
Pump casing
Maximum suction pressure
Temperature range
Liquid temperatures
Ambient temperature
Electrical data
Motor efficiency
Motor Protection index
Insulation class
Frequency
Electrical voltage
Other data
Humidity
Altitude
Maximum suction head
Sound pressure level dB(A)
0/+3 dB(A)
Outline and pipe dimensions (Fig. 4).
5.3 Scope of Supply
• Multistage pump.
• Installation and operating instructions.
5.4 Accessories
Original accessories are available for HELIX range:
Designation
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, steel,
2 Round counterflanges, steel,
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, stainless steel, 1.4404
Installation and operating instructions - Wilo-Helix V/FIRST 22-36-52
16, 25 or 30 bars depend on the model
10 bars
Note : real inlet pressure (Pinlet)+ pressure at 0 flow delivered by the
pump must be below the maximum operating pressure of the pump. In
case of exceeding maximum operating pressure, the ball bearing and the
mechanical seal could be damaged or lifetime could decrease.
P Inlet + P at 0 flow ≤ Pmax pump
See pump nameplate to know the maximum operating pressure: Pmax
-20°C to +120°C
-30°C to +120°C (if full stainless steel)
-15°C to + 90°C (Viton version for O'ring and mechanical seal )
-15° to +50°C
Other temperature on request
Motor according to IEC 60034-30
IP55
155 (F)
See motor plating
See motor plating
< 90% sans condensation
< 1000 m
(> 1000m on request)
according to NPSH of the pump
0.37 0.55 0.75 1.1 1.5 2.2
50Hz 56 57 58 62 64 68
60Hz 60 61 63 67 71 72
Article no.
(PN16 – DN50) 4038587
(PN25 – DN50) 4038589
(PN16 – DN50) 4038585
(PN25 – DN50) 4038588
(PN16 – DN65) 4038592
(PN25 – DN65) 4038594
Power (kW)
3 4 5.5 7.5 11 15 18.5 22
69 71 74
74 78 81
English
30 37 45
76
84
17