The surface water pump features a fully closed cooling circuit in the outdoor unit. When installing monopole systems, the presence of central heating pipes outdoors is required. In case there are no power outages, the heat pump operates correctly and there is no risk of freezing. The problem arises when outdoor temperatures are low and there is a power outage in the building where the pump is installed, causing the circulation pump of the heat pump to stop working. This can lead to freezing of the heat exchanger and, consequently, damage. One solution to this problem is the use of Keller safety valves, which are set to a temperature of 3°C. If the water temperature in the central heating drops below 3°C, the valve opens automatically and the water is drained from the system, thus protecting the water in the exchanger from freezing and bursting. Usually, two such valves are installed: on the supply and return lines.
Technical data:
- Connections: 2 x 1" M
- Maximum pressure: 10 bar
- Maximum medium temperature: 75°C
- Ambient temperature range: -30 to 60°C
- kvs: 10 m³/h
- Opening temperature: 3°C
- Closing temperature: 4°C
- Accuracy: ±1°C
- A: 107 mm
- L: 58 mm
- G: 1
If the heat pump has both upper and lower connections, and the pipes have been installed according to the diagram, two antifreeze valves are required for proper drainage of the external pipe sections.
- Product Number
- IB330039
Main Specifications
- Power Source
- Electric
- Automatic Suction
- No
- Centrifugal
- No
- Firefighting
- No
- Set
- Yes
Technical Specifications
- Flow Rate
- 10 m³/h
- Pressure
- 10 bar
Important information
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.
