User Guide

English
6 Subject to technical alterations!WILO SE 02/2011
•Water and water/glycol mixtures in a maximum ratio up to 1:1. High glycol
concentration and low temperature systems may require a reassessment of the
hydraulic data to compensate for the increased viscosity (please contact your
WILO representatives for more information). Use of additives (corrosion
inhibitors, oxygen sc
avengers etc.) must be in compliance with the
manufacturer instructions.
•If other fluids or additives are used, please contact WILO for proper
authorization.
The high-efficiency pumps of the Wilo-Stratos-Z series are also suitable for use
in
• Secondary hot water circulation systems
5 Product details
5.1 Type key
CAUTION! Possible damage of the pump!
Unacceptable fluids may destroy the pump.
Observe the specifications of the manufacturer regarding the mixing ratios.
Add additives to the fluid on the pressure side of the pump.
Example: Stratos-D 2x3-40
Stratos High-efficiency pump
Wet-rotor circulating pump
D = single-head pump (no letter)
-D = twin-head pump
-Z = single-head pump for secondary hot water circulation systems
2 Pipe connection [inch]
3-40 Infinitely variable nominal pump head 3 to 40 [ft]
H
min
: 3.3 ft, H
max
: 39.4 ft
5.2 Technical Data
Power supply 1~230 V ± 10%
Frequency
60 Hz
Degree of protection Enclosure 2
Insulation class
H
Motor protection
Standard built-in full motor protection
Maximum sound pressure level 54 dB(A)
Liquid temperature
Heating, ventilation, air-conditioning applications:
14°F (-10°C) to 230°F (+110°C)
Secondary hot water circulation applications:
32°F(0°C) to 176°F(+80°C )
Max. ambient temperature 104°F (40°C)
Max. rel. humidity  95%
Max. working pressure at the pump
145 psi
Residual current
I  3.5 mA (see also Chap. 7.2)