Main: Fennikezi air source heat pump hot water design, installation, maintenance; ground-source heat pump design, installation, maintenance; Fennikezi floor heating, air conditioning, hot water equipment integration; love music shook the air source heat pump design, sales, installation maintenance; US air-source heat pump design, sales, installation, maintenance and other exhaust pipe 1. Remove the valve cap from the low pressure and high pressure regulating valve opening. 2, the interface is connected to a vacuum pump Fluoridated mouth. 3. Make sure the vacuum degree qualified shop near the air to water, taking no less than 20 minutes. Should not be used outside refrigerant R22 emptying leak. (Another two methods for reference, see below) 4. Use a wrench to rotate in a counterclockwise direction within six spool valve low pressure and high pressure valve to fully open! Replace all caps air to water, and tighten. 5. Leak: Use soapy water to check all pipe joints and various caps mouth leaks, if any, shall be tightened with a wrench to not leak, and definitely not for leaks. Note: The air entering the system will cause the compressor is not working properly. Fengcheng guesthouse with a commercial hot sales, installation and maintenance costs of air to water, air to water Fengcheng commercial sales, installation how to sell air to water, water projects Fengcheng hotel sales, installation, Harvest hot air water projects sales for hotels, restaurants, hair salons, bath, the villa with central hot exhaust air units with freon inside the three-way valve on the unit under the protection of the nut is screwed, with a hex wrench open the little three-way valve, and with a sharp Small things withstand large three-way valve spool, feel gas discharge, about 20 seconds after the release of the three-way valve to withstand the big things, with soap and water applied to the connecting pipe fittings, look for leaks, if not leak gas, with a hex wrench the size of the three-way valve is fully open, replace all caps and tighten. How hot air to air to water _ _ Station Square air to water provided by the Jiangxi Yunjiang HVAC engineering company. Jiangxi Yunjiang HVAC Engineering Company (www.jxyjnt.com) is a leader in Nanchang, Jiangxi, construction, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. HVAC leader in cloud river with the staff warmly welcome all inquiries negotiations to create a better cloud Jiang HVAC future.