Product Overview

4 Wilo-Stratos-Z
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Technical data Wilo-Stratos-Z
Wilo-Stratos-Z...
1.25x3-25 1.25x3-35 1.5x3-25 1.5x3-40 2x3-30 3x3-30
Approved fluids (other fluids on request)
Heating water ••••••
Water glycol mixtures up to 50% concentration ••••••
Power
Max. head H
max
23 ft 36 ft 26 ft 39 ft 30 ft 33 ft
Max. head H
max
7 m 11 m 8 m 12 m 9 m 10 m
Max. flow Q
max
35 US GPM 48 US GPM 66 US GPM 83 US GPM 105 US GPM 180 US GPM
Max. flow Q
max
8 m
3
/h 11 m
3
/h 15 m
3
/h 19 m
3
/h 24 m
3
/h 41 m
3
/h
Permitted field of application
Temperature range for applications in heating, ven-
tilation & air-conditioning systems at max. ambient
temperature of +40 °C
+14 to +230 °F (-10 to +110 °C)
Temperature range for applications in secondary hot
water circulation systems at max. ambient tempera-
ture of +40 °C
+32 to +176 °F (0 to +80 °C)
Max. ambient temperature T 104 °F
Max. ambient temperature T 40 °C
Max. permitted total hardness in potable water cir-
culation systems
3.57 mmol/l
Pipe connections
Nominal flange diameter Dia 1.25 " 1.25 " 1.5 " 1.5 " 2 " 3 "
Non ANSI flange (oval, rotated 90°) ••••––
Non ANSI flange (oval) – –––––
HV pump flange – – – – • –
125# ANSI flange – ––––•
Electrical connection
Input power - single phase U 230 V 230 V 230 V 230 V 230 V 230 V
Input frequency f 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
Motor/electronics
Speed control Frequency converter
Degree of protection Enclosure 2
Insulation class H HHHHH
Materials
Pump volute Stainless steel (AISI CF-8M)
Impeller Engineered composite (PPS - 40% GF)
Engineered
composite
(PPE - 30%
GF)
Pump shaft Stainless steel (X39CrMo17-1)
Bearing Carbon, synthetic resin impregnated
Minimum suction head
Minimum suction head at 122 °F (50°C) 4.3 psi 4.3 psi 4.3 psi 7.1 psi 7.1 psi 10.0 psi
Minimum suction head at 203 °F (95°C) 14.2 psi 14.2 psi 14.2 psi 17.1 psi 17.1 psi 21.3 psi
Minimum suction head at 230 °F (110°C) 22.8 psi 22.8 psi 22.8 psi 25.6 psi 25.6 psi 32.7 psi
• = available, - = not available