English
• 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 scavengers etc.) must be in compliance with the
manufacturer instructions.
• If other fluids or additives are used, please contact WILO for proper
authorization.
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.
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
Example: Stratos-D 2x3-40
Stratos
D
2
3-40
5.2
Technical Data
Power supply
Frequency
Degree of protection
Insulation class
Motor protection
Maximum sound pressure level
Liquid temperature
Max. ambient temperature
Max. rel. humidity
Max. working pressure at the pump 145 psi
Residual current
6
High-efficiency pump
Wet-rotor circulating pump
= single-head pump (no letter)
-D = twin-head pump
-Z = single-head pump for secondary hot water circulation systems
Pipe connection [inch]
Infinitely variable nominal pump head 3 to 40 [ft]
H
: 3.3 ft, H
: 39.4 ft
min
max
1~230 V ± 10%
60 Hz
Enclosure 2
H
Standard built-in full motor protection
54 dB(A)
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 )
104°F (40°C)
Û 95%
ÓI Û 3.5 mA (see also Chap. 7.2)
Subject to technical alterations!
WILO SE 02/2011
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