User manual HONEYWELL RV181

[. . . ] According to its intended use · in good condition · With due regard to safety and risk of danger 3. Note that the appliance is exclusively for use in the applications detailed in these installation instructions. [. . . ] The spring loaded non return valve has a moving seal disc which is lifted off the seat by a greater or lesser amount depending on the flow rate through the valve. If the flow falls towards zero, then the spring pushes the disc back onto the seat and seals the waterway. Slowly open shut off valves on inlet and outlet. We recommend a planned maintenance contract with an installation company Installation position horizontal pipework with test plugs directed downwards Admission pressure max. 1 Installation It is necessary during installation to follow the installation instructions, to comply with local requirements and to follow the codes of good practice. ⷠThe installation location should be protected against frost and be easily accessible. Shut off valves should be fitted on each side of the non return valve. Close shut off valves on inlet and outlet. In accordance with DIN 1988, part 8; the following measures must be taken: 8. 1 Inspection Frequency: once annually To be carried out by an installation company To be carried out by the operator 1. [. . . ] Troubleshooting Disturbance Cause Remedy Open the shut off valves fully Check function non return valve ( chapter 8. Too little or no Shut off valves up- or water pressure downstream of the Y strainer are not fully open Non return valve cartridge is faulty [. . . ]