Antifreeze issue national Quality Supervision and Inspection Center air conditioning equipment fan coil fan coil units antifreeze question how insulation northern frost fan coil units operational management issues fan coil units in the northern region is the northern region of central air conditioning systems of commercial buildings and residential buildings households type central air conditioning system in the form of the end of one of the devices. Because much fan coil units installed in the ceiling, on the ceiling and interior leaks once equipment, goods greater damage, so frost fan coil units is very important. Fan coil fittings, fan coil thermostat, fan coil outlet, fan coil manhole fan coil units, fan coil return air fan coil leak detection leakage through the coil in the cracking reason analysis on the design northern fan coil units, the use of some of the views put forward for the concerned officers. Surface air heat exchanger within the unit is subject to pressure and leak test by one fan coil hydrophilic aluminum foil brass, specified as: "disk unit under 116MPa pressure tube should be able to operate normally and tightness examination should not leakage. " After the installation of fan coil units to specific engineering systems, but also in accordance with the norms "Ventilation and Air Conditioning Engineering Construction Quality Acceptance" (GB50243-2002 fan coil noise so big, in accordance with GB50243-97 2002 years ago) on the system test pressure and leak detection, specific provisions for when the design has no provisions, the test pressure hot and cold water, cooling water system, when the work pressure is less than equal to 110MPa fan coil when power is how much is 115 times the working pressure, the minimum of not less than 016MPa; when the working pressure greater than 110MPa, working pressure plus 015MPa. Therefore, after debugging the system due to product quality led to the possibility of leakage of small units. Ceiling concealed fan coil units, fan coil fan coil fins hydrophilic aluminum windows power is much, Wudi fan coil units, air-conditioning equipment by Hao Yang Hao Yang Texas Air Conditioning Equipment Limited. Air Conditioning Equipment Co., Texas Hao Yang (www.dzapjt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hao Yang air conditioning and you hand into the brilliant, for a better future!