Winter
External preheating or supplementary heating is enabled.
Outside air preheating (frost protection) can be ensured with a PTC heat register. Depending on the unit type, a PTC heat register is already installed.
External preheating or supplementary heating is enabled.
Outside air preheating (frost protection) can be ensured with a PTC heat register. Depending on the unit type, a PTC heat register is already installed.