Grundfos UP Series User Manual

2.3.3 Inlet pressure requirements
The pressure required at the inlet of the pump is a function of the temperature of the water as shown in
Table B.
In a pressurized system, the required inlet pressure is the minimum allowable system pressure.
In a system open to the atmosphere, the required inlet pressure is the minimum distance the pump must
be located below the lowest possible water level of the water source (for example, tank or pool).
Table A: Maximum water temperature
Ambient temperature
+104 °F
(+40 °C)
+120 °F
(+48 °C)
+140 °F
(+60 °C)
+160 °F
(+71 °C)
+175 °F
(+79 °C)
Water temperature
All UP *
+230 °F
(+110 °C)
+220 °F
(+104 °C)
+210 °F
(+98 °C)
+190 °F
(+87 °C)
+175 °F
(+79 °C)
* Exceptions below:
UPS 15-35
+165 °F
(+73 °C)
+140 °F
(+60 °C)
- - -
UP 15-100F
+205 °F
(+96 °C)
+195 °F
(90 °C)
+185 °F
(+85 °C)
+175 °F
(+79 °C)
-
UP 26-120U
+205 °F
(+96 °C)
+195 °F
(90 °C)
+185 °F
(+85 °C)
+175 °F
(+79 °C)
-
UP 26-116
+150 °F
(+65 °C)
+140 °F
(+60 °C)
- - -
Table B: Minimum required inlet pressure
Water temperature
230 °F
(110 °C)
190 °F
(88 °C)
140 °F
(60 °C)
Inlet pressure in feet (m)
36 ft
(1.10 m)
9 ft
(2.8 m)
3 ft
(0.9 m)
Inlet pressure in psi (bar)
15.6 psi
(1.07 bar)
4.0 psi
(0.27 bar)
1.3 psi
(0.08 bar)
6
English (US)

Grundfos UP Series Specifications

General

Brand	Grundfos
Model	UP Series
Category	Water Pump
Language	English