AFP • Antifreeze valves

The mechanical antifreeze valve (iStop® 108701) is used to keep the water in the heating and cooling circuit running and to prevent ice formation. When the temperature of the medium reaches 3°C, the internal sensor opens and allows water to drain out of the system. This valve is designed for systems with monobloc heat pumps and prevents damage to the machine and the circuit components if the power supply is cut off and the temperature of the medium drops below 3°C.

Caleffi

• Sold by piece

The device must only be installed in a vertical position, with the outlet facing downwards, to allow the drained water to flow out properly and free from obstructions. The antifreeze valves must be installed outdoors, where the lowest temperatures are reached if the heat pump is blocked. The antifreeze valves must be positioned far away from heat sources in order to maintain proper operation. It is recommended to install the antifreeze valves on both pipes (flow and return). Otherwise, the pipe may remain filled with water, leading to the risk of ice formation.

Loose nut coupling, type: LCJ

• Monoblock, type: CGW-M
• Monoblock, type: CGW-M SG