FlowCon By-Pass Assembly 05/2025 Installation and Operation Instruction The FlowCon By-Pass Assemblies are fac- tory assembled and tested units for immediate installation on a coil. These valve sets are avail- able in sizes: • F3900.15, DN15 (1/2”) • F3900.20, DN20 (3/4”) • F3900.25, DN25 (1”) • F3900.32, DN32 (1 1/4”) The By-Pass Assembly includes 3 main parts: 1. The by-pass unit itself with two 3-way posi- tion ball valves 2. A strainer incl. blow-down valve on the inlet side to the coil and 3. A valve housing with pressure/temperature plugs and flushing cap on the outlet side. After flushing a PICV insert, or the like, can easily be installed. By-Pass Assemblies for 3/4” insert also include complete insulation cap as standard. Installation Any FlowCon By-Pass Assembly unit comes pre- assembled and pre-tested from factory allowing fast plug-and-play on site. Connect the strainer side to the inlet of the coil and the PICV side to the outlet of the coil. It is possible to order the By- Pass Assembly with flex hoses if required. Flushing For both flushing and normal operation use treated, clean, and debris-free water according to VDI2035. Set the bypass handles to BYPASS OPERA- TION and flush the main system without compromising coil components. BYPASS OPERATION This paper is a supplement to the FlowCon General Instruction Latest release of any FlowCon material is available on www.flowcon.com Page 1 of 4
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