Grundfos UPS 43-100 User Manual

5
English (US)
4.3 Verify electrical requirements
Verify the electrical supply to be certain the
voltage, phase and frequency match that of the
pump motor. The proper operating voltage and
other electrical information can be found on the
pump nameplate.
This pump's motor is designed to run on ± 10 %
of the nameplate-rated voltage.
4.4 Pumped liquid requirements
The pump can be used to circulate:
• Potable hot water.
• Water containing glycol for hydronic heating
(see section 9. Additional technical data for
additional limitations).
• Cooling water.
In domestic hot-water systems it is advisable to
use stainless steel pump housing versions of
this pump.
All pump types (stainless, bronze or cast iron
pump housing) should not be used in water with
a degree of hardness lower than 14 grains per
gallon of hardness.
Fluids should be clean and should not contain
solid particles, fibers, or mineral oils.
If the pump is installed in a heating system, the
water should meet the requirements of accepted
standards on water quality in heating systems.
The fluid should not contain solid particles,
fibers, or mineral oils.
The pump is lubricated and cooled by the liquid
being pumped. Therefore, the pumped liquid
must always be allowed to circulate through the
pump.
Extended periods without circulation will cause
premature wear to the bearings and excessive
motor heat.
The pumped liquid must meet the temperature
requirements listed in the following charts.
Warning
The Grundfos Small UP/UPS pump
is intended for use with water only.
The pump must not be used for the
transfer of flammable liquids such
as diesel oil, gasoline, and similar
liquids.
The pump is not for pool or marine
use.
Note
Fluid must never be allowed to
freeze during non-operational
periods.
Open systems
(domestic, potable hot water)
Fluid Ambient
Min. 36 °F (2 °C) 33 °F (1 °C)
Max. < 149 °F (65 °C) 100 °F (38 °C)
Caution
In domestic hot-water systems, it is
recommended to keep the liquid
temperature below 149 °F (65 °C) to
eliminate the risk of lime
precipitation.
Closed systems
(non-potable heating or cooling airless
fluid)
Pump
models
Liquid Ambient
Min. All
36 °F
(2 °C)
33 °F
(1 °C)
Max.
UPS 26-150
230 °F
(110 °C)
100 °F
(38 °C)
UPS 43-100
230 °F
(110 °C)
100 °F
(38 °C)
UPS 50-60
212 °F
(100 °C)
100 °F
(38 °C)
Water and glycol mix
Max. 50 % glycol at 15 °F (-9.5 °C) liquid
(Hydraulic performance change can be
expected.)

Grundfos UPS 43-100 Specifications

General

Brand	Grundfos
Model	UPS 43-100
Category	Water Pump
Language	English