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Circulation pump UPS2

Circulation pump UPS2
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Circulation pump UPS2
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398.81€
Ex Tax: 398.81€
  • Stock: In Stock
  • Brand: Grundfos
  • Model: 98707853
  • Weight: 3.00кг
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Grundfos UPS2 – energy-efficient circulation pump

Grundfos UPS2 is a circulation pump for domestic heating systems. It regulates its operation according to heat demand and is suitable for one-pipe, two-pipe and underfloor heating systems.

Low consumption Energy efficient permanent magnet motor with EEI ≤ 0.23.
Quiet operation Reduces noise from thermostatic valves and the heating system.
Easy replacement Suitable for replacing existing UPS circulation pumps.

Main advantages of UPS2

  • Circulation pump for domestic heating systems.
  • Suitable for one-pipe and two-pipe heating systems.
  • Suitable for underfloor heating and mixing circuits.
  • Energy-efficient permanent magnet motor.
  • Integrated differential pressure control.
  • Automatic adaptation to actual heat consumption.
  • Three proportional pressure curves.
  • Three constant speeds.
  • Built-in electrical and thermal protection.
  • No external motor protection is required.
  • Silent operation when the mode is correctly selected.
  • Compact design and easy installation.
  • Low maintenance requirements.
  • Suitable for direct replacement of an existing UPS pump.

Applications

  • One-pipe heating systems.
  • Two-pipe heating systems.
  • Underfloor heating.
  • Mixing circuits in large heating systems.
  • Home heating installations.
  • Replacement of old UPS circulation pumps.

How does UPS2 work?

As heat demand decreases, the thermostatic valves begin to close. UPS2 automatically reduces the differential pressure and its performance to match actual demand.

This reduces electricity consumption, limits noise in the valves and improves the regulation of the heating system.

UPS2 is primarily intended for heating systems. Do not use the pump for fuels, oils, aggressive chemicals, flammable liquids or liquids containing solid particles and fibers.

Suitable liquids

  • Clean water in heating systems.
  • Clean, thin, non-aggressive and non-explosive liquids.
  • Water that meets accepted quality standards for heating systems.

Technical characteristics

Characteristics Value
Power supply 1 × 230V, 50/60Hz
Maximum system pressure 10 bar
Liquid temperature 2–95°C
Ambient temperature 0–55°C
Degree of protection IP44
Insulation class F
Sound pressure level Up to 43 dB(A)
Energy index EEI ≤ 0.23

Installation guidelines

  • The pump is installed with a horizontal motor shaft.
  • Before starting, the system must be filled and bled.
  • Do not start the pump when there is no liquid.
  • Ensure the required minimum inlet pressure.
  • The electrical connection must be carried out in accordance with local regulations.
  • No external motor protection is required.

Select model UPS2

The two models differ in the nominal diameter of the connection. Both have a maximum head of 8 m and a port length of 180 mm.

Model Nominal diameter Maximum pressure Port length Joining Product number
25-80 DN 25 8 m 180mm G 1 1/2 98707853
32-80 DN 32 8 m 180mm G2 98707855

25-80 (Model: 98707853)

UPS2 circulation pump with nominal diameter DN 25, maximum head 8 m and port length 180 mm. Suitable for domestic heating systems with G 1 1/2 connection, including one-pipe, two-pipe and underfloor heating systems.

The model offers three speeds and three proportional pressure curves for adjustment to the actual heat demand.

32-80 (Model: 98707855)

Circulation pump UPS2 with nominal diameter DN 32, maximum head 8 m and port length 180 mm. Suitable for heating systems with larger pipe diameters and G 2 connection.

The model provides energy-efficient circulation, low noise and the ability to choose between constant speed and proportional pressure.

Select the model according to the diameter and thread of the existing pipe connections. The DN 25 model has a G 1 1/2 connection, and the DN 32 model has a G 2 connection.

Control modes

Proportional pressure

With proportional control, the pump adapts its performance to the actual heat demand. When the flow rate is reduced, the differential pressure is also reduced, which limits noise and consumption.

  • PP1: Lowest proportional pressure curve.
  • PP2: Average proportional pressure curve.
  • PP3: Highest proportional pressure curve.

Constant speed

At constant speed, the pump operates according to a selected constant characteristic regardless of the actual flow rate in the system.

  • Speed I: Minimum performance.
  • Speed II: Average performance.
  • Speed III: Maximum performance.

Speed III can be used for a short time when bleeding the system. In normal operation it is recommended to select the lowest setting that provides the necessary circulation.

Change setting

The setting is changed via the button on the control unit. A short press switches between the three constant speeds. Holding the button down for approximately 5 seconds switches the pump to proportional pressure mode.

The factory setting of UPS2 is constant speed III. It is recommended that after installation the setting be adjusted to the actual heat consumption and hydraulic resistance of the system.

Benefits of the right setup

  • Lower electricity consumption.
  • Less noise than thermostatic valves.
  • Better heat distribution.
  • Less hydraulic disturbances in the system.
  • More comfortable operation of heating units.

UPS2 Model Comparison

Characteristics UPS2 25-80 UPS2 32-80
Product number 98707853 98707855
Nominal diameter DN 25 DN 32
Maximum pressure 8 m 8 m
Port length 180mm 180mm
Joining G 1 1/2 G2
Power supply 1 × 230V, 50/60Hz 1 × 230V, 50/60Hz
Maximum system pressure 10 bar 10 bar
Liquid temperature 2–95°C 2–95°C
Degree of protection IP44 IP44
Energy index EEI ≤ 0.23 EEI ≤ 0.23

Which model to choose?

  • UPS2 25-80: Choose this model for DN 25 pipes and G 1 1/2 threaded connection. It is suitable for domestic heating systems with lower or medium flow rates.
  • UPS2 32-80: Choose this model for DN 32 pipelines and G 2 threaded connection. It is suitable for heating systems with a larger diameter and higher possible flow rate.
Both models have the same maximum head of 8 m and the same length of 180 mm. The main difference is in the nominal diameter and the threaded connection.

Energy efficiency

UPS2 is an energy-efficient pump with EEI ≤ 0.23, compliant with the EuP requirements for circulators. The permanent magnet motor and automatic regulation reduce consumption compared to traditional uncontrolled pumps.

The data is in accordance with the provided technical catalogue for Grundfos UPS2. Check the specific diameter, thread, port length, liquid temperature and operating conditions before ordering and installation.

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