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Engineered ECS EJECTOR ECS" corrosion Automatic Air Vent Solutions," designed for fire sprinkler systems Complete Corrosion Control. A notification from the PAV-WS indicates that the Maintenance Instructions pressure gauge on the bottom of the vent assembly has a 1. The ECS Ejector Automatic Air Vent must be inspected system pressure reading due to a failure of the primary annually at minimum. While isolation ball valve is in float valve which renders the ECS Ejector Automatic Air Vent inoperable. the open position check for air/water leaks. 2. Check the pressure gauge on the bottom of the vent Installation Instructions assembly for a system pressure reading. If a system 1. The ECS Ejector Automatic Air Vent is equipped with pressure reading is detected the primary vent valve an isolation ball valve to be connected to the fire may require service or replacement. sprinkler system. Once the PAV-W/WS has been 3. While isolation ball valve is in the closed position the assembled at the provided union (see Figure 1), the inspection must check for blockage in the "Y" strainer contractor must install a 1" outlet (welded or and the discharge orifice. mechanical) to connect the vent assembly to the Operating Instructions sprinkler system. 1. Once the fire sprinkler system has been 2. Install the PAV-W/WS vent assembly at the location hydrostatically tested, open the isolation ball valve on provided by the engineering design documents in a the PAV-W/WS. Trapped gas should be expected to level position at an accessible high point on the immediately vent from the device if the system has sprinkler system where trapped gas can be vented. been re-filled with water. NOTE: Piping to the vent assembly cannot be 2 The isolation ball valve must remain in the open installed in a configuration that would trap position to allow for venting of any additional trapped water and prevent drainage to the sprinkler gas remaining in the system that may migrate to the system; a water trap impedes the ability of vent location. the vent to remove gas from the fire 3. Water traps that would restrict operation of the ECS sprinkler system. Ejector Automatic Air Vent can be cleared by closing 3. When electronic supervision is specified the the isolation ball valve and removing the "Y" strainer PAV-WS must be utilized instead of the PAV-W (see plug. Once the water trap has been removed, replace Figure 1) and an addressable monitor module with the "Y" strainer plug and reopen the isolation ball an end of line resistor must be provided in valve. accordance with NFPA 72. 4. Inspection of the vent assembly should be Gas Vent Valve Replacement performed after installation and hydrostatic testing plumbing the PAV-W/WS to drain is not required. of the fire sprinkler system. Inspection should be Occasionally during venting operations a small amount of performed periodically thereafter in accordance with water may leak past the primary gas vent valve and the applicable NFPA codes and standards and/or the collect in the intermediate plumbing. This is considered authority having jurisdiction. normal and not a failure of the valve. However, if NOTE: Patented redundant float design eliminates inspection reveals a system pressure reading then the piping the PAV-W/WS to a drain primary vent valve may require replacement. Please A notification from the PAV-WS indicates that the contact Engineered Corrosion Solutions for replacement pressure gauge on the bottom of the vent assembly has a parts and instructions. system pressure reading due to a failure of the primary float valve which renders the ECS Ejector Automatic Air Vent inoperable. Engineered Corrosion Solutions- 11336 Lackland Road-St. Louis, MO 63146-Phone 1-314-432-1377- www.ecscorrosion.com ECS EJECTOR AUTOMATIC AIR VENT - PAV-W/WS May 2018-Rev 4 2