Brochure

Operating conditions
UP, UPS Series 200
6
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6. Operating conditions
Pumped liquids
CAUTION: This pump is intended for use with water
only.
Grundfos UP(S) pumps can be used to circulate
• Potable hot water
• Water for hydronic heating
• Water/glycol mixtures up to 50/50
• Cooling water.
In domestic hot-water systems it is advisable to use
a bronze pump (UP(S) model) only for water with a
degree of hardness lower than 14 grains per gallon of
hardness. For water with a higher degree of hardness,
a direct coupled TP pump is recommended.
If the pump is installed in a heating system, the water
should meet the requirements of accepted standards
on water quality in heating systems.
In water/glycol mixtures, in order to prevent the
glycol from degrading, temperatures above those for
which the fluid is rated should be avoided and time
spent at high temperatures minimized.
It is also important that the system is cleaned and
flushed prior to the installation of the glycol mixture.
In order to avoid problems with corrosion or
precipitation, the glycol fluids should be checked and
maintained regularly. If further dilution of the
supplied glycol is required, follow the requirements of
the supplier of the glycol.
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 also meet the following
requirements.
The pumping of liquids with densities or kinematic
viscosities higher than those of water will cause
– a considerable pressure drop
– a drop in the hydraulic performance
– a rise in the power consumption.
In these situations, contact Grundfos for assistance.
Temperature limits
Other technical data
Relative humidity: Max. 95 %.
Sound-pressure level: The sound-pressure level
of the pump is lower than 41 dB(A) (reference: 20
mPa).
Max. working pressure: 145 psi (10 bar).
Approvals: See the pump nameplate.
Inlet pressure
To avoid cavitation noise, the following minimum
pressures are required at the pump suction flange:
Ambient air temperature 32 °F to 104 °F (0 °C to 40 °C)
Fluid temperature,
open systems
140 °F (60 °C).
Fluid temperature,
closed systems
UPS pumps: 248 °F (120 °C).
UP pumps: 230 °F (110 °C).
UP(S) model
Liquid temperature
167 °F
(75 °C)
194 °F
(90 °C)
230 °F
(110 °C)
[psi] [ft] [psi] [ft] [psi] [ft]
UPS 32-40 0.7 1.6 2.2 5.1 21.0 48.5
UPS 32-80 0.7 1.6 5.1 11.8 23.9 55.2
UPS 32-160 11.6 26.8 16.0 37.0 34.1 78.8
UPSD 40-40 0.7 1.6 4.4 10.2 23.2 53.6
UPS 40-80/4 0.7 1.6 1.5 3.5 18.1 41.8
UPS40-80/2 6.5 15.0 10.9 25.2 29.0 67.0
UPS 40-160 5.1 11.8 9.4 21.7 27.6 63.8
UPS 40-240 11.6 26.8 16.0 37.0 34.1 78.8
UPS 50-40 0.7 1.6 2.9 6.6 21.8 50.4
UPS 50-80/4 0.7 1.6 4.4 10.2 23.2 53.6
UPS 50-80/2 4.4 10.2 8.7 20.1 26.8 61.9
UPS 50-160 11.6 26.8 16.0 37.0 34.1 78.8
UPS 50-240 10.2 23.6 14.5 33.5 32.6 75.1
UPS 53-55/57 4.4 10.2 8.7 20.1 26.8 61.9
UPS 75-69 11.6 26.8 16.0 37.0 34.1 78.8
UPS 80-40 11.6 26.8 16.0 37.0 34.1 78.8
UPS 80-80 14.5 33.5 18.9 43.7 37.0 85.5
UPS 80-160 21.8 50.4 26.1 60.3 43.5 100.5
UPS 100-40 27.6 63.8 31.9 73.7 50.0 115.5
UP 43-70F 0.7 1.6 4.8 11.0 15.4 35.6
UP 43-110 3.6 8.4 8.2 19.0 18.9 43.7
UP 53-45 2.9 6.6 7.5 17.3 18.1 41.8
UP 53-46 1.1 2.5 5.8 13.4 16.4 37.9