99 01202 662500 | sales@hamworthy-heating.com | hamworthy-heating.com SCHEMATICS & SYSTEM DESIGN Hydraulic schematics Common flow sensor Primary pump DHW primary pump Boiler 1 Boiler 2 Boiler 3 oL w sol s header Mixing valve Heating pump Heating circuit flow sensor Room sensor Immersion heater At sael t uminim m nikrow g eliob r erusserp Strainer Clenston air & dirt separator Horton dosing pot Condensate discharge minimum 5 degrees descent to drain Primary isolation valve Powerstock calorifier Key: DHW Domestic Hot Water SRV Safety Relief Valve SRV Ai System SRV r separator Highest point of the circulating system above the boiler SRV SRV Note: Secondary DHW circuits not shown for clarity Static height required to satisfy former HSC PM5 Mains cold water Water meter Feed and expansion tank Wessex ModuMax mk3 Scheme 1: Open vented System with Low Loss Header Filename: Wessex-ModuMax-mk3-Scheme1-OpenventedwithLLH-A.pdf 04/2015 Rev A Boiler 1 Boiler 2 Boiler 3 talP e heat regnahcxe Chesil pressurisation unit Burstock expansion vessel Anti-gravity loop Strainer Quick fill Clenston air & dirt separator Horton dosing pot SRV SRV SRV Secondary return Secondar System SRV y flow Key: SRV Safety Relief Valve Primary pump Air separator Common flow sensor Condensate discharge minimum 5 degrees descent to drain Mains cold water Water meter Upton 3: Sealed Primary and Open Vented Secondary System with Plate Heat Exchanger Separation Filename: Upton-Scheme3-Sealedwithplateandopenvented2nd-A.pdf 04/2015 Rev A Wessex M duMax mk3 scheme: Open vented with low loss header Upton scheme: Sealed primary and open vented secondary system with plate heat exchanger s parati n
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