SPECIFICATIONS FlowCon By-Pass Assembly 1 Static pressure: Media temperature: Material: - Housings and cover: - O-rings: - By-Pass ball valves: - By-Pass handles, extended: - Strainer mesh: - Drain valve: - Drain ball valve: - Drain valve handle: - Insulation: End connection: Housing taps: 2500 kPa / 360 psi -20°C to +120°C / -4°F to +248°F Forged brass DZR ASTM CuZn36Pb2As (CW602N) EPDM Chemically nickel-plated brass Painted aluminum 420µ (=40 mesh) stainless steel Brass DZR ASTM CuZn36Pb2As (CW602N) Chemically nickel-plated brass Painted aluminum EPP Female ISO 1/4” ISO Note 1: Assembly comes complete and fully pressure tested. PRINCIPLE OF OPERATION NORMAL OPERATION: During normal operation the bypass is closed (both handles are positioned parallel with water flow), and water will flow through the strainer, into the FCU and return through the PICV valve. During this operation the PICV will balance the flow from closed valve to design flow depend- ing on actual requirements and corresponding actuator position. BYPASS OPERATION: Option 1. During bypass operation the FCU is isolated from the system. The FCU may, after draining, easily be serviced while the main system is run- ning unaffectedly. It will also be in bypass operation that the main system is flushed without compromising FCU components. Option 2. In addition, complete isolation of the FCU is possible providing closed bypass and isolated flow- and return-side. Tech note · FlowCon By-Pass Assembly DN15-25 · january 2024 · www.flowcon.com Page 2 of 14

PRINCIPLE OF OPERATION (.continued) FlowCon By-Pass Assembly supports flushing procedure according to BSRIA BG29/2021. FORWARD FLUSHING OPERATION: Option 1. During flushing the system can be forward flushed through the supply-pipe strainer blow- down valve. Option 2 - Forward Flushing through Coil. Optionally, the return-side FlowCon AB-housing plug may be fitted with a combi p/t drain valve and allow forward flushing of the FCU as well. BACK FLUSHING OPERATION: Option 1. When system back-flushing , the bypass is opened and the system can be back-flushed un- restricted through the strainer blowdown valve. Option 2 - Back Flushing through Coil. As an alternative back-flushing procedure , the bypass is closed and the system can be back-flushed through PICV and FCU. It is re- commended to set PICV setting to 5.0 to allow as much opening as possible. Alternatively, the PICV insert may be removed from valve housing and replaced with a flushing cap allowing unrestricted back-flushing though PICV housing, FCU and strainer blowdown valve. Tech note · FlowCon By-Pass Assembly DN15-25 · january 2024 · www.flowcon.com Page 3 of 14