Pumped Liquid Requirements - Grundfos UPS 200 Serie Instructions D'installation Et D'utilisation

3.4 Pumped liquid requirements

CAUTION: The UPS pump is intended for use
with water only.
The pump can be used to circulate:
• Potable hot water
• Water for hydronic heating
• Cooling water
• In domestic hot-water systems it is advisable
to use bronze pumps (UPS 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 Grundfos 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.
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:
4
Minimum pump inlet pressure
(during operation)
At these liquid temperatures
UPS
model
167°F/75°C
[psi] hf
32-40/4 0.7 1.6
32-80/2 0.7 1.6
32-160/2 11.6 26.8
40-40/4 0.7 1.6
40-80/4 0.7 1.6
40-80/2 6.5 15.0
40-160/2 5.1 11.8
40-240/2 11.6 26.8
50-40/4 0.7 1.6
50-80/4 0.7 1.6
50-80/2 4.4 10.2
50-160/2 11.6 26.8
50-240/2 10.2 23.6
53-55/57 4.4 10.2
75-69 11.6 26.8
80-40/4 11.6 26.8
80-80/4 14.5 33.5
80-160/2 21.8 50.4
100-40/4 27.6 63.8
194°F/90°C 230°F/110°C
[psi] hf [psi] hf
2.2 5.1 21.0 48.5
5.1 11.8 23.9 55.2
16.0 37.0 34.1 78.8
4.4 10.2 23.2 53.6
1.5 3.5 18.1 41.8
10.9 25.2 29.0 67.0
9.4 21.7 27.6 63.8
16.0 37.0 34.1 78.8
2.9 6.7 21.8 50.4
4.4 10.2 23.2 53.6
8.7 20.1 26.8 61.9
16.0 37.0 34.1 78.8
14.5 33.5 32.6 75.3
8.7 20.1 26.8 61.9
16 37 34.1 78.8
16.0 37.0 34.1 78.8
18.9 43.7 37.0 85.5
26.1 60.3 43.5 100.5
31.9 73.7 50.0 115.5