The GRUNDFOS UPS circulator pumps are designed for water circulation in heating, hot water, cooling or air conditioning systems where the duty requires high water volumes at low pressures. Three standard models are available, but options include single or two head units and alternative specifications for cold water and very low pressure installations. A particular feature of the pump design is that the motors have three speed settings so it is possible to select the ideal flow to meet the system requirements.
Pump construction is AISI304 stainless steel for the impeller and bearing plate, cast iron for the pump housing and diecast aluminium for the rotor housing.
MOTOR
The integral 2-pole asynchronous squirrel-cage motor is designed to operate at three speeds. Motors should be connected to mains supply though an MCB and suitably sized DOL starter.
Power Supply: 3 x 415 V
Max. Speed: 2800 rpm
Enclosure Class: IP44
Insulation Class: F
OPERATING CONDITIONS
Pumped Liquid: Thin, clean, chemically non-aggressive liquids without solids or fibres.
Fluid Temperature Range: -10°C to +120°C. Note the liquid temperature should be higher than the ambient temperature.
Maximum Ambient Temperature: 40°C
Max. Operating Pressure: 10bar
Installation: Pumps must be installed with the pump shaft horizontal.
PUMP DATA
Model |
Power (W) |
Max. Current (A) |
Dimensions (mm) |
Weight (kg) |
DN |
A |
B |
C |
D |
E |
F |
UPS 40-120 |
460 |
1 |
40 |
135 |
250 |
220 |
313 |
150 |
110 |
19 |
UPS 50-120 |
720 |
1.3 |
50 |
145 |
280 |
270 |
307 |
165 |
125 |
26 |
UPS 65-120 |
1250 |
2.3 |
65 |
145 |
340 |
280 |
372 |
185 |
145 |
31 |