Products
Pressurisation

HL Hydronics becomes Hydrun →

Pressurisation unit

Pressurisation unit

HY-P

4/5.5/7/9 bar

Popular product

Previously HL Hydronics Soft-X P

Hydrun Pressurisation unit for hydronic heating and cooling systems

→ 1-3 days delivery

→ 1-3 hours start-up

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→ 1-3 days delivery

→ 1-3 hours start-up

Hydrun Pressurisation unit for hydronic heating and cooling systems

Description

Smart and fully automatic pressure maintenance for heating and cooling systems.

The Hydrun Pressure Maintenance Unit is a fully automatic unit that regulates system pressure via a motor valve and a soft-start pressure maintenance pump.

The unit uses the motor valve and the soft-start pump to maintain a constant and stable pressure.

The pressure control unit is designed to manage expansion in heating and cooling systems a smooth and responsive manner. The unit requires only a pressure setpoint—the rest is handled automatically.

Features

Easy Commissioning

Clear connection logic and preset values reduce on-site time.

Reliable Components

Proven, service-friendly components from Grundfos, Danfoss, and Schneider Electric.

Seamless Communication

Modbus TCP, RTU, and BACnet for alarms, status, and logging directly to DDC/BMS as standard.

Flexible expansion

The unit can be installed with both open and closed expansion vessels.

Tested by RISE

Function and performance verified in independent tests by Research Institutes of Sweden.

Manufactured in Töcksfors

Swedish manufacturing with traceable quality, short lead times, and quick access to spare parts.

Documents

HY-P Manual

Technical Information

Models

Model

HY-P-90

Previous name: Soft-X 90

Previous item no.: HL1069

Max operating pressure: 9 bar

Pressure class: 10 bar

Operating temperature: 0-70°C

Voltage: 230V single-phase

Fuse: 10 A

Power: 0.75 kW

Communication: Modbus TCP, RTU and BACnet

Media: Glykol <50%, Etanol <29%

Connections: 22CU/DN25

Dimensions: D:2 x W:500 x H:750mm

Weight: 26.4 kg

Model

HY-P-90-AF (Autofill)

Previous name: Soft-X 90A

Previous item no.: HL1069A

Max operating pressure: 9 bar

Pressure class: 10 bar

Operating temperature: 0-70°C

Voltage: 230V single-phase

Fuse: 10 A

Power: 0.75 kW

Communication: Modbus TCP, RTU and BACnet

Media: Glykol <50%, Etanol <29%

Connections: 22CU/DN25

Dimensions: D:2 x W:500 x H:750mm

Weight: 26.4 kg

Model

HY-P-40

Previous name: Soft-X 40

Previous item no.: HL1060

RSK no.: 553 64 06

Max operating pressure: 4 bar

Pressure class: 10 bar

Operating temperature: 0-70°C

Voltage: 230V single-phase

Fuse: 10 A

Power: 0.75 kW

Communication: Modbus TCP, RTU and BACnet

Media: Glykol <50%, Etanol <29%

Connections: 22CU/DN25

Dimensions: D:250 x W:500 x H:750mm

Weight: 22.5 kg

Model

HY-P-55

Previous name: Soft-X 55

Previous item no.: HL1067

RSK no.: 553 30 35

Max operating pressure: 5.5 bar

Pressure class: 10 bar

Operating temperature: 0-70°C

Voltage: 230V single-phase

Fuse: 10 A

Power: 0.75 kW

Communication: Modbus TCP, RTU and BACnet

Media: Glykol <50%, Etanol <29%

Connections: 22CU / DN25

Dimensions: D:250 x W:500 x H:750mm

Weight: 23.8 kg

Model

HY-P-70

Previous name: Soft-X 70

Previous item no.: HL1068

RSK no.: 553 30 36

Max operating pressure: 7 bar

Pressure class: 10 bar

Operating temperature: 0-70°C

Voltage: 230V single-phase

Fuse: 10 A

Power: 0.75 kW

Communication: Modbus TCP, RTU and BACnet

Media: Glykol <50%, Etanol <29%

Connections: 22CU / DN25

Dimensions: D:250 x W:500 x H:750mm

Weight: 25.7 kg

Model

HY-P-70-AF (Autofill)

Previous name: Soft-X 70A

Previous item no.: HL1068A

RSK no.: 553 30 38

Max operating pressure: 7 bar

Pressure class: 10 bar

Operating temperature: 0-70°C

Voltage: 230V single-phase

Fuse: 10 A

Power: 0.75 kW

Communication: Modbus TCP, RTU and BACnet

Media: Glykol <50%, Etanol <29%

Connections: 22CU / DN25

Dimensions: D:250 x W:500 x H:750mm

Weight: 25.7 kg

Model

HY-P-55-AF (Autofill)

Previous name: Soft-X 55A

Previous item no.: HL1067A

RSK no.: 553 30 36

Max operating pressure: 5.5 bar

Pressure class: 10 bar

Operating temperature: 0-70°C

Voltage: 230V single-phase

Fuse: 10 A

Power: 0.75 kW

Communication: Modbus TCP, RTU and BACnet

Media: Glykol <50%, Etanol <29%

Connections: 22CU / DN25

Dimensions: D:250 x W:500 x H:750mm

Weight: 23.8 kg

Model

HY-P-40-AF (Autofill)

Previous name: Soft-X 40A

Previous item no.: HL1060A

RSK no.: 553 30 34

Max operating pressure: 4 bar

Pressure class: 10 bar

Operating temperature: 0-70°C

Voltage: 230V single-phase

Fuse: 10 A

Power: 0.75 kW

Communication: Modbus TCP, RTU and BACnet

Media: Glykol <50%, Etanol <29%

Connections: 22CU/DN25

Dimensions: D:250 x W:500 x H:750mm

Weight: 22.5 kg

Compatible with

Expansion vessel

Expansion, Closed Vessel

HY-E-CV

Hydrun Expansion Tanks for hydronic heating and cooling systems

Expansion vessel

Expansion, Open Vessel

HY-E-OV

Hydrun Expansion Tanks for hydronic heating and cooling systems

Support

Talk to our support team

Get help with product questions—from installation to day-to-day operation.

Do you need a replacement part?

Send us the part number or a photo, and we'll find the right part.

Hydrun Spare Parts for hydronic heating and cooling systems
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