Fresh air ventilator (the ventilator for short) is a new ventilating system employing indoor-outdoor two-way ventilating structure, which can not only fill sufficient, fresh, clean, oxygen-rich air to the chamber, but also exhaust equivalent foul air out of the chamber. Now, this kind of ventilator is very popular among users because it has good insulating and ventilating performance and can solve air pollution produced in room decoration process.

However, during whole ventilation process, indoor air will become very dry after ventilating for a while. This is because the moisture content of outdoor air in winter is very low. Indoor dry air will be at the expense of the health of human beings and the quality of wooden furniture and room decoration. Hence, humidifying can not be neglected!

The temperature of fresh air fed by the ventilator is very low (about 10-12°C in winter). If we adopt wet-film or ultrasonic isoenthalpy humidifying, we can not meet the requirements of users even in saturated state. Therefore, we have to use electrode or PTC isothermal-wet method to satisfy users.

The working principle of STANDSPT fresh air ventilator series humidifiers is feeding the hot steam produced by PTC electric ceramic heating method to the air outlet of the ventilator in order to complete the humidifying work against fresh dry air. When the room temperature reaches rated value, users can close the humidifier manually or stop it by automatically inputting an electrical signal by temperature sensor. The STANDSPT ventilator is only added a tap water circuit (nominal diameter DN15). Generally, if the ventilation of ventilator is lower than 600m3/h, the ventilator will be equipped with SPT electrode ceramic humidifier; if ventilation is higher than 600m3/h, the ventilator should be equipped with a SD series electrode humidifier!

Remark: Wet-film is not suitable for the fresh air ventilator.