Installers are required to carry out installation, commissioning and servicing work in Benchmark Commissioning Checklist accordance with the Benchmark Code of Practice which is available from the Heating Service record and Hotwater Industry Council who manage and promote the Scheme.
Green Storage WB Range Installation & Maintenance Instructions YOUR CYLINDER AND ITS COMPONENTS YOUR CYLINDER AND ITS COMPONENTS SUPPLIED COMPONENTS All indirect models are supplied with installation and maintenance instructions, technical The unvented cylinder comes complete with the necessary fittings, safety and control performance &...
Green Storage WB Range Installation & Maintenance Instructions INSTALLATION INSTRUCTIONS Notes: HOT OUTLET The pressure reducing valve, non- return valve and expansion relief valve are combined together in the inlet control set. TEMPERATURE & PRESSURE On 120 – 180 litre sizes there is no RELIEF VALVE SECONDARY RETURN CIRCUIT EXPANSION...
Page 5
Green Storage WB Range Installation & Maintenance Instructions INSTALLATION INSTRUCTIONS (CONTINUED) BALANCED HOT & COLD SUPPLY SOLAR INDIRECT UNVENTED The installer must safeguard the hot water system from back flow by ensuring the hot (TWIN COIL) and cold supply to all outlet locations are balanced. All mixer: taps, showers or valve shall be installed to comply with the Water Supply (Water Fittings) Regulations 1999.
Page 6
Green Storage WB Range Installation & Maintenance Instructions INSTALLATION INSTRUCTIONS (CONTINUED) SECONDARY CIRCULATION CONNECTION DISCHARGE ARRANGEMENT This can be used with secondary circulation. An appropriate WRAS approved bronze You will need to position the inlet control group so that the discharge from both or stainless steel circulator should be used in conjunction with a non-return valve to safety valves can be joined together via a 15mm tee (see diagram below).
Page 7
Green Storage WB Range Installation & Maintenance Instructions INSTALLATION INSTRUCTIONS (CONTINUED) The two safety valves will only discharge water under fault conditions. When A) To a trapped gully with the end of the pipe below the fixed grating and above the operating normally water will not be discharged.
Page 8
Green Storage WB Range Installation & Maintenance Instructions SPECIFICATION DETAILS The unvented cylinder is made from Duplex stainless steel for excellent corrosion resistance. The cylinder has a strong rust-proofed steel case and is highly insulated with environmentally-friendly foam. Further details are below. MATERIALS •...
Page 9
Green Storage WB Range Installation & Maintenance Instructions PRODUCT DIAGRAMS INDIRECT CONNECTIONS: 22mm Cold feed with dip pipe to diffuser in bottom of cylinder 22m Hot water outlet C1 Immersion heater C2 Secondary immersion heater - 250 litre & above only D1 22mm Boiler coil connections ⁄...
Page 10
Green Storage WB Range Installation & Maintenance Instructions TECHNICAL PERFORMANCE AND SPECIFICATION DATA - FICHE Nominal Actual Product Codes Energy Standing Total Weight Weight Capacity Capacity Worcester Bosch / OMC Rating Loss (W) Height Empty (kg) Full (kg) (Litre) (Litre) Indirect unvented hot water cylinders &...
Page 11
Green Storage WB Range Installation & Maintenance Instructions Heat-up Time Heat Loss Pressure All Cylinders Product specifics (Minutes) (kW/24Hr) Drop 3 Bar 3.5 Bar Insulation Indirect Coil Indirect Coil Indirect Coil Thickness Surface Area Capacity (Litre) (kW Rating) 18.18 1.18 0.16 0.67 3.69...
Page 12
Green Storage WB Range Installation & Maintenance Instructions GREENSTAR GAS-FIRED SYSTEM BOILERS USING AN OPTIONAL INTERNAL DIVERTER VALVE DESIGN AND SPECIFICATION CONSIDERATIONS WHEN USING 1. The Integral Diverter Valve Kit is supplied with a domestic hot water (NTC) sensor that must be used to monitor the domestic hot water cylinder’s temperature. THE OPTIONAL INTEGRAL DIVERTER VALVE This requires the placing of the 8mm diameter sensor into the pocket.
Page 13
Green Storage WB Range Installation & Maintenance Instructions WIRING DIAGRAMS The diagrams below provides references to generic terminals that feature on the various components and other manufacturers’ components may vary in their wiring requirements, different control boards (PCBs) within Greenstar gas-fired system boilers. For specific particularly thermostats.
Page 14
Green Storage WB Range Installation & Maintenance Instructions WIRING DIAGRAMS (CONTINUED) SOLAR HIGH LIMIT CONTROL These schematic wiring diagrams depict an IMIT high limit control stat and the connections are numbered accordingly. Where an alternative is supplied, connect as per manufacturer’s instructions. High Limit Main Supply Control...
Page 15
Green Storage WB Range Installation & Maintenance Instructions WIRING DIAGRAMS (CONTINUED) High Limit Main Supply Control double pole fused spur 230/220 3amp Pump O G/Y Zone Vale...
Page 16
Green Storage WB Range Installation & Maintenance Instructions WIRING DIAGRAMS (CONTINUED) VARIANT DUAL THERMOSTAT WIRING The diagrams shown relate to the components listed. Other components and other manufacturers’ components may vary in their wiring requirements, particularly thermostats. Always refer to manufacturers’ instructions which may override the detail in order to function correctly.
Page 17
Green Storage WB Range Installation & Maintenance Instructions WIRING DIAGRAMS (CONTINUED) CONNECTED TO BOILER WITH PUMP OVER-RUN FACILITY Programmable Two Channel Programmable Green Plug Room Stat Room Stat With DHW Control Pump E SLB LP Boiler with over run BL BR GR OR BL BR GR OR Br Gr Or Red Plug - Heating 1...
Page 18
The installer must follow the Benchmark code of practice for the Benchmark certification to be valid. The Benchmark code of practice can be found online INDIRECT UNITS via www.centralheating.co.uk...
Page 19
Green Storage WB Range Installation & Maintenance Instructions SERVICING GENERAL 1) Twist the cap of the expansion relief valve on the inlet control set and allow water Servicing should only be carried out by competent installers and only spare parts to flow for 5 seconds.
See insert sheet for a list of part numbers. The installer must follow the Benchmark code of practice for the Benchmark certification and your 25-year guarantee to be valid. The Benchmark code of practice can be found USER INSTRUCTIONS online via www.centralheating.co.uk.
Page 21
The system has been installed and commissioned in accordance with the manufacturer’s instructions The system controls have been demonstrated to and understood by the customer The manufacturer’s literature, including Benchmark Checklist and Service Record, has been explained and left with the customer Commissioning Engineer’s Signature Customer’s Signature...
SERVICE RECORD It is recommended that your hot water system is serviced regularly and that the appropriate Service Record is completed. Service Provider Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions.
Page 23
• Faults and any associated costs arising from lack of In the event of a breakdown during the guarantee period • The Benchmark Commissioning Checklist and Service power or water. contact our customer service department. Guarantee repair...
Page 24
Green Storage WB Range Installation & Maintenance Instructions...
Need help?
Do you have a question about the Green Storage WB Series and is the answer not in the manual?
Questions and answers