Brochure

Product introduction
UP, UPS Series 200
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1. Product introduction
Introduction
The Grundfos UP(S) Series 200 line of wet rotor
circulators is unique to commercial building
services. Most competitor pumps are dry runners.
UP(S) wet rotor circulators, on the other hand, are
designed so that the water being pumped surrounds
the rotor, cooling and lubricating the shaft and
bearings.
Fig. 1 Grundfos UP, UPS Series 200 circulator pumps
Wet rotor design eliminates the need for a fan to cool
the motor. Fans are often a source of noise and
vibrations that can resonate throughout a building via
the pipework. Eliminating the fan results in very quiet
operation.
UP(S) Series 200 pumps are available in cast iron
construction for closed (heating and air conditioning)
and bronze construction for open (domestic hot water)
systems.
Both cast iron and bronze UP(S) Series 200 pumps
utilize laser-welded stainless steel impellers to achieve
high pump efficiency.
The standard UP(S) motors are suitable for variable
speed drive applications.
Terminal box modules
UPS pumps are equipped with a standard or protection
module in the terminal box. Pumps with standard
module must be connected to the power supply via an
external contactor, whereas pumps with protection
module can be connected directly to the power supply.
For further information about the different modules,
see pages 17 through 18.
Applications
The pumps are designed for circulation of liquids in
heating and air-conditioning systems. They can also
be used in domestic hot-water systems.
Applications for the UP(S) pumps include:
• Heating systems for apartments, colleges, hospitals,
institutions and schools
• hot water recirculation for hotels, colleges
institutions, hospitals, and apartments
• large residential heating
• snow melt.
To ensure optimum operation, the dimensioning range
of the system must fall within the performance range of
the pump. See sections 6. Operating conditions on
page 13 and 8. Technical data on page 19.
Pumped liquids
Grundfos UP, UPS Series 200 pumps are suitable for
pumping thin, clean, non-aggressive and
non-explosive liquids, not containing any solid
particles, fibers or mineral oil.
In domestic hot-water systems it is advisable to use
bronze pumps only for water with a degree of hardness
lower than approx. 14°dH. For water with a higher
degree of hardness, a Grundfos TP dry-rotor pump is
recommended.
The pumps must not be used for the transfer of
flammable liquids such as diesel oil and gasoline.
For liquid temperature, see section 6. Operating condi-
tions on page 13.
Features and benefits
The Grundfos range of UP(S) Series 200 circulator
pumps offer many beneficial features:
•Quiet
• maintenance-free
• UPS pumps have a 2 or 3 speed switch, which
increases the comfort level for the application
• small profile (one piece vs. three piece)
• sealless, which eliminates worries about hot water
leakage
• pumped water lubricates the shaft and bearings so
there is no oil to leak
• no couplers to change.
GrA3223, GrA3217