许多太阳热水器产品都在水箱上设置排气口,多采用简单的直通管。在上水压力较高的地区,经常出现排气管冒水现象。有的热水器还安装了溢流信号管来控制上水,可是有时出现排气管出水而信号管不出水的问题,这是因为信号管一般为3～4m长,而排气管一般只有5～7cm,水当然要从短路里流 Many solar water heater products are set in the tank vent, the use of more simple straight tube. Excessive water pressure in the area, often appear exhaust pipe water phenomenon. Some water heaters are also installed overflow signal to control the Sheung Shui, but sometimes there is no problem with the signal pipe water outlet pipe, which is because the signal pipe is generally 3 ~ 4m long, while the exhaust pipe is generally only 5 ~ 7cm, water, of course, from the short circuit