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Product Information
The Worcester Greenstar 25Si is a stylish and unique hot water and central heating boiler preferable to hang on a kitchen wall, ideal for small or medium sized property. The Greenstar 25Si provides central heating output between 7.2kw and hot water at the rate of 10.2liters.They can cut hot water and heating bills by between 15-20% and runs 30% cheaper than an older boiler.
Greenstar 25Si condensing boilers deliver this energy-saving performance by recycling exhaust gases to extract and re-use latent heat.A highly efficient use of energy also significantly reduces carbon dioxide in the atmosphere and utilize your energy.
Pick up only NO DELIVERY - you must make arrangements to pick item up.
Featurers:
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"Keep hot" facility to maintain the temperature of the primary heat cell
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Heatronic III control system - sophisticated boiler management
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SEDBUK(Seasonal Efficiency of Domestic Boilers in the UK) A-rated efficiency - environmentally friendly
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25kW domestic hot water (DHW) output (30kW output also available for this boiler)
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Multi-directional fluing
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Optimising 7-day programmable room thermostat available
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Compact dimensions, space saving and siting flexibility
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Includes wall mounting frame for optional vertical pipework routing- no additional wall spacing frame required,reduce compexity in installation.
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Low NOx and CO2 emissions - environmentally friendly
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2 year** warranty with 10 year** warranty on primary heat exchanger
Specification:
| Title | Value |
|---|---|
| Height (mm) | 710mm (max) |
| Width (mm) | 400mm |
| Depth (mm) | 330mm (max) |
| Weight | 27.1kg |
| DHW flow rate @ 35°C rise | 10.2L/min |
| SEDBUK Value/band | 90.1%/Band A |
| Output to domestic hot water | 7.2 - 25Kw (24,560 - 85,300Btu/hr) |
| Output to central heating | 7.2 - 24kW (24,560 - 82,000Btu/hr) |
| Solar compatible | No |
| Maximum horizontal flue (100mm Ø) | 4,600mm (inc. terminal) |
| Maximum vertical flue (100mm Ø) | 6,400mm (inc. terminal) |
| Maximum horizontal flue (125mm Ø) | 13,000mm (inc terminal) |
| Maximum vertical flue (125mm Ø) | 15,000mm (inc. terminal) |
| Mains cold water inlet | 15mm compression |
| Domestic hot water outlet | 15mm compression |
| Gas connection | 22mm compression |
| Pressure relief valve | 15mm |
| Heating flow and return connections | 22mm compression |
| Condensate connection | 22mm plastic pipe |
| Maximum domestic water inlet pressure | 10bar |
| Minimum domestic water inlet pressure for maximum DHW rate | 1.3bar |
| Minimum domestic water inlet pressure to operate the appliance | 0.2bar |
| Primary water content | 3.9 litres |
| NOx classification | Class 5 |
| Wall mounting jig | Yes |
| Filling loop | Optional |
| Plug-in timers | 1 (optional) |
| Optimising room temperature controller | 1 (optional) |
| Condensing in DHW mode | No |
5
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Compact and good looking
Olivia from canterbury
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Current Item
Worcester - Combi - Greenstar 25Si
Discontinued