SEDBUK Band A Gas Boilers Useful numbers Sales Service Tel: 01905 752640 Fax: 01905 456445 01905 455394 Tel: 08457 256206 Fax: 01905 757536 Livingston (Scotland) Fax: 01506 441687 Technical (Pre & Post Sales) Training Tel: 08705 266241 Fax: 01905 752741 Tel: 01905 752526 Fax: 01905 752535 Spares Literature Line Tel: 01905 752571 Fax: 01905 754620 Tel: 01905 752556 The Worcester Bosch Greenstar Si Gas-fired Condensing Combi Boiler Series Technical and Specification Information Energy Efficiency
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The Greenstar Si condensing combi boiler series Total heating and hot water comfort The Greenstar Si combi series Adjustable hot water control. User comfort and economy. Aluminium silicon heat exchanger. High efficiency. Boiler keep hot facility. Instantly heated hot water. SEDBUK Band A. High efficiency. Less than 28kg lift weight. One man lift. Wall mounting jig. Allows pre-fabrication of system. Compact dimensions. Space saving, ease of siting. Modulation control. Energy saving.
The Greenstar Si condensing combi boiler series Central heating mode The advantages of a combi boiler A combi (or combination boiler) is a compact and highly efficient unit giving all the heating and hot water you need, with significant savings on running and installation costs. Unlike a conventional heating and hot water system, a combi boiler system does not store domestic hot water. It heats water directly from the cold mains – as you use it.
DT10RF digistat Technical data – Si series A familiar wall-mounted 24 hour programmable RF digital thermostat combined with a fascia mounted single channel programmer to time the hot water cylinder or combi preheat functions. The programmer includes a built-in receiver for the room thermostat and all of the functionality of the DT20.
The Greenstar Si condensing combi boiler – inside story 5 2 Installing the Greenstar Si series All combi boilers require less installation time than a conventional boiler, for these reasons: However, the Si Junior series is exceptional for its number of additional time-saving installation features: 1. All the major components, including the pump, are contained within the boiler casing and do not need to be fitted separately. 2. The boiler comes pre-wired and pre-plumbed. 3.
Wall preparation C Pipework connections and casing dimensions E A The picture shows the Si wall mounting jig which enables a simple and straightforward method of attaching the boiler to the wall surface. Cabinet dimensions C 450 min. A B C 700mm* 400mm 330mm Invert *710mm to top of casing front. After fixing the jig to the wall, the appliance, having a lift weight of less than 28kg, can be easily lifted by one man onto the jig and the union connections tightened.
Greenstar Si combi boiler series horizontal fluing options The Greenstar Si series has the choice of 2 differently sized horizontal RSF flue systems, 100mm and 125mm. Both systems have different maximum lengths. Options 1 to 6 detail the permissible lengths. Boiler location & clearances Bathrooms 600mm 600mm The boiler can be installed in zones 2 or 3. If a mechanical or RF mechanical timer is fitted to an Si combi, then it can only be installed in zone 3. 750mm See IEE wiring regulations.
Greenstar Si combi boiler series vertical fluing options Option 3 EXTENSION FLUE HORIZONTAL AND UPWARDS Option 5 EXTENSION FLUE UPWARDS AND HORIZONTAL USING A SECOND 90˚ BEND The Greenstar Si series have the choice of 2 differently sized vertical RSF flue systems, 100mm and 125mm. Both systems have different maximum lengths. Options 1 to 3 detail the permissible lengths.
Installation requirements Option 2 Option 3 VERTICAL BALANCED FLUE SYSTEM WITH TWO 45° BENDS VERTICAL BALANCED FLUE SYSTEM WITH TWO 90° BENDS Installation of the Greenstar Si Series must be in accordance with the relevant requirements of the Gas Safety (Installation Use) Regulations (as amended), current IEE Wiring Regulations, local Building Regulations, Building Standards (Scotland) (Consolidation) regulations and bylaws of the local Water company and Health and Safety Document No.
Cold water connection Propane gas supply Connection should be made as shown in the pipework detail and the appliance installed generally in accordance with the layout shown on page 10. The Greenstar Si Series is available in a propane gas version. The appliance when on a hot water or full output demand will require up to 2.38 kg/h of gas (depending on the model). The gas tank or bottles must be capable of supplying this quantity of gas at a nominal pressure of 37mbar (14.8in wg) at the appliance.
The Greenstar Si series accessories MT10 MECHANICAL TIMER MT10RF MECHANICAL RF THERMOSTAT DT20 TWIN CHANNEL DIGITAL PROGRAMMER DT20RF DIGITAL RF THERMOSTAT WITH TWIN CHANNEL PROGRAMMER DT10RF DIGISTAT A complete after-sales service – Whenever you need it As part of the worldwide Bosch Group, Worcester is duty bound to maintain the highest possible standards of after-sales care.
The very best training programmes from Worcester Bosch Worcester Bosch Training Courses New Product Advance Training Worcester Bosch has always placed great emphasis on support and training for installers and service engineers. Today this need is greater than ever: one in every two boilers now purchased in the UK is a combi boiler and, month by month, an increasing number of condensing boilers are being installed.
