In installations with external hydraulic piping, glycol may be used for frost protection.
When it is needed
Especially in monobloc units where water circulates outside the building.
Effect on flow
Glycol increases viscosity and usually increases circuit pressure losses.
Effect on thermal performance
The heat capacity of the mixture differs from that of pure water and must be taken into account in the calculations.
Correct concentration
Use only the necessary concentration according to the lowest expected temperature and the manufacturer's instructions.
