Brochure

5.1.2 Operating conditions, ALPHA2 26-99
and ALPHA1 26-99 models
Supply voltage
1 x 115 V, + 10 %/- 10 %, 60 Hz
Motor protection
EP - Electronically Protected.
The pump requires no external motor protection.
Enclosure class
CSA enclosure type 2. Indoor use only. X2D.
Insulation class
F
Relative humidity
Maximum 95 %
Maximum system pressure
150 psi (10 bar) (1.0 MPa)
Inlet pressure
The minimum inlet pressure must be available at the pump
inlet during operation.
Liquid temp. Min. inlet press.
[°F (°C)] [psi (bar) (MPa)]
203 (95) > 7 (0.48) (0.05)
Sound pressure level
43 dB(A)
Inrush current
Measured on a flicker network according to IEC
61000-3-3:1994 + A1, + A2, Annex B.
• 115 V: 25.2 A
Leakage current
< 3.5 mA
Ambient temperature
Maximum 130 °F (55 °C) near the pump surface.
Storage temperature
Maximum 158 °F (70 °C)
Liquid temperature
Maximum (continuously): 203 °F (95 °C)
Minimum: 14 °F (-10 °C)
In domestic hot water systems, keep the liquid temperature
below 149 °F (65 °C) to eliminate the risk of lime
precipitation.
To avoid condensation in the control box and stator, the
liquid temperature must always be higher than the ambient
temperature.
Operating temperatures
Ambient temp. Liquid temp. min. Liquid temp. max.
[°F (°C)] [°F (°C)] [°F (°C)]
32 (0) 36 (2) 230 (110)
50 (10) 50 (10) 230 (110)
68 (20) 68 (20) 230 (110)
86 (30) 86 (30) 230 (110)
95 (35) 95 (35) 194 (90)
104 (40) 104 (40) 158 (70)
Check valve
Use of a check valve may reduce pump hydraulic
performance. Use a check valve in parallel pumping
applications.
Approximate power usage
Approx. power usage
Speed setting Min. [W] Max. [W]
Constant pressure (I) 8 45
Constant pressure (II) 14 45
Constant pressure (III) 39 45
ALPHA
5
19
Operation