{"product_id":"worcester-bosch-greenstar-35-he-combi-installation-servicing","title":"Worcester Bosch Greenstar 35 He Combi Installation Servicing","description":"\u003cp\u003eWorcester Bosch Greenstar 35 He Combi Installation Servicing Instructions Service Repair Workshop Manual PDF VEHICLE\/EQUIPMENT INTRODUCTION: The Worcester Bosch Greenstar 35 He Combi is a high-efficiency condensing combination boiler designed to provide both central heating and domestic hot water from a single compact wall-mounted unit. The Greenstar range represents Worcester Bosch flagship domestic boiler line, featuring a stainless steel heat exchanger for exceptional durability, a modulating burner for precise temperature control, and a built-in hot water cylinder elimination that saves space in British homes. The 35 He Combi variant delivers 35kW of heating output, making it suitable for larger homes with multiple bathrooms and high hot water demand. Built to comply with stringent UK Building Regulations and SEDBUK efficiency standards, the Greenstar series has been one of the UK most trusted and widely installed boiler systems, known for reliable long-term performance and excellent fuel efficiency. SERVICE \u0026amp; REPAIR SCOPE: - Installation guidelines covering flue positioning, wall mounting, gas supply connection, and system filling - Commissioning procedures for both heating and domestic hot water circuits - Boiler assembly component identification with exploded parts diagrams - Gas valve inspection, adjustment, and replacement procedures - Burner assembly examination, electrode gap setting, and ignition lead inspection - Heat exchanger inspection for limescale accumulation and corrosion damage - Condensate trap cleaning, siphon testing, and drain pipe inspection for blockages - Fan speed verification and fan replacement procedures - Pump operation testing, head selection adjustment, and pump overrun verification - Expansion vessel pre-charge pressure testing and re-pressurization procedures - Diverter valve motor inspection, valve cartridge replacement, and DHW priority function testing - Plate heat exchanger (DHW) descaling procedure and flow rate testing - Gas pressure testing at inlet and burner test points with operating specifications - Combustion analysis using flue gas analyser with CO2\/CO ratio verification - Pressure relief valve testing and expansion pipe routing inspection - Frost thermostat connection and boiler protection mode verification - Printed circuit board (PCB) fault diagnosis, LED fault code interpretation, and component testing - Wiring diagram navigation with terminal block identification for all electrical connections - Annual servicing checklist covering all safety-critical inspections and performance tests TECHNICAL SPECIFICATIONS: - Manufacturer: Worcester Bosch (Robert Bosch Group) - Model: Greenstar 35 He Combi - Type: Condensing combination (combi) boiler - Maximum central heating output: 35kW - Maximum domestic hot water output: 35kW - Fuel: Natural gas (mains gas) - Efficiency: SEDBUK certified high-efficiency condensing - Heat exchanger: Stainless steel primary heat exchanger - Flue: Standard horizontal flue or vertical flue options DIAGNOSTIC INFORMATION: - Fault code reading via LED indicator sequences on the control panel - Flue gas analysis with combustion performance verification (CO2 percentage and CO\/CO2 ratio) - Gas inlet pressure testing with minimum dynamic pressure specification at full fire - Burner pressure setting adjustment using manometer at maximum and minimum rates - Pump head pressure testing against system resistance requirements - Expansion vessel air pressure verification when system is fully depressurized - Domestic hot water flow rate testing to identify plate heat exchanger scaling - Diverter valve operation test by comparing heating and DHW temperature responses - Fan speed measurement with tachometer against factory minimum and maximum specifications - Electrode spark test for ignition sequence verification during boiler firing cycle - System pressure monitoring and automatic air vent function testing ILLUSTRATIONS \u0026amp; DIAGRAMS INCLUDED: - Complete boiler exploded parts diagram with component identification numbers - Wiring schematic showing all electrical connections, PCB terminals, and sensor locations - Gas valve assembly detail showing test point locations and adjustment screws - Heat exchanger cross-section showing water flow paths and combustion gas routing - Flue installation diagrams with minimum clearance specifications and angle requirements - Condensate trap and siphon assembly with cleaning point identification - Component layout diagram showing front-access service points - Commissioning checklist and benchmark gas service record templates COMPATIBILITY: - Worcester Bosch Greenstar 35 He Combi condensing combination boiler - Covers installation, commissioning, servicing, and maintenance procedures - Does not cover Greenstar Ri (regular), Si (system), or other kW variants FILE PROPERTIES: - Format: Searchable PDF - Language: English - Delivery: Instant digital download - Access: Download anytime after purchase\u003c\/p\u003e","brand":"Manual","offers":[{"title":"Default Title","offer_id":50479668068532,"sku":"171469","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/4746\/1044\/files\/171469-worcester-bosch-greenstar-35-he-combi-installation-servicing.jpg?v=1790310269","url":"https:\/\/emanual.com\/uk\/products\/worcester-bosch-greenstar-35-he-combi-installation-servicing","provider":"eManual Online Vehicle Workshop Repair Manuals","version":"1.0","type":"link"}