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Overview
The Greenstar i System series is part of a market-leading range of energy-saving condensing gas-fired boilers from Worcester. Greenstar 24i System boilers can cut hot water and heating bills by between 15-20% - and they?re up to 30% cheaper to run than an older boiler. Up to 97% of the gas consumed by a new Greenstar 24i condensing System Boiler is converted into heat for the heating of the system.
Greenstar condensing boilers deliver this energy-saving performance by recycling exhaust gases to extract and re-use latent heat - a highly efficient use of energy which also significantly reduces carbon dioxide in the atmosphere.
Pick up only NO DELIVERY - you must make arrangements to pick item up.
Key features:
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SEDBUK(Seasonal Efficiency of Domestic Boilers in the UK) A-rated - environmentally friendly
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24kW output (12kW output also available for this boiler)
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Compatible with Greenskies solar water heating
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Wall mounting frame with pipes behind - no exposed pipework
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Proven cast aluminium heat exchanger
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One man lift- 27kg
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Compact dimensions - space saving and siting flexibility
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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
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LPG boiler available
Specification:
Title | Value |
---|---|
Height (mm) | 710mm (max) |
Width (mm) | 440mm |
Depth (mm) | 330mm (max) |
Weight | 27.1kg |
SEDBUK Value/band | 90.1% Band A |
Output to central heating | 7.2-24.0kW (24,560-82,00 Btu's/hr) |
Solar compatible | Yes |
Maximum horizontal flue (100mm Ø) | 4,600mm (inc terminal) |
Maximum vertical flue (100mm Ø) | 6,400mm (inc terminal) |
Maximum horizontal flue (125mm Ø) | 13,000 (inc terminal) |
Maximum vertical flue (125mm Ø) | 15,000 (inc terminal) |
Gas connection | 22mm compression |
Pressure relief valve | 15mm Ø |
Heating flow and return connections | 22mm compression |
Condensate connection | 22mm plastic pipe |
Primary water content | 2.75 litres |
NOx classification | Class 5 |
Wall mounting jig | Yes |
Plug-in timers | Yes (optional) |
Optimising room temperature controller | Yes (optional) |
Product Overview
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Delivery FAQs
Larger pallet couriers will contact you on the day to let you know a rough time for delivery, due to the size and cost, a signature is always required.
We always suggest someone is home to accept the delivery, as missing your delivery may result in a re-delivery fee being charged.
If the courier has left you a calling card you may contact them directly to rearrange delivery for a more convenient time. If you have not received a calling card, we will be able to assist you in re-booking delivery. Please use the live chat function to speak directly to a member of the team, or alternatively email us at info@victorianplumbing.co.uk.
Orders can be updated and modified up until the picking process begins. To amend your order please get in touch via Live Chat or by emailing us at info@victorianplumbing.co.uk.
If you would like to upgrade your delivery or arrange to split your delivery, you can do this via the help centre.
Please note, once your order has begun to be picked at our warehouse, you will not be able to make any further additions.
Yes, please get in touch with the team either via live chat or at info@victorianplumbing.co.uk to arrange a pre-order.
If you are ordering other in-stock items alongside this, please be aware your shipment will be held until all items are ready to be dispatched. If you would like to arrange a split delivery, please let the team know as soon as your order is confirmed.
We can only deliver and accept signatures from the delivery address as per the order.
Larger pallet couriers will contact you on the day to let you know a rough time for delivery, due to the size and cost, a signature is always required. Small parcel couriers may leave these with a neighbour if no one is home to accept delivery and leave an appropriate calling card if so.
We always suggest someone is home to accept the delivery, as missing your delivery may result in a re-delivery fee being charged.
Returns
For further information on our returns process, please check out our Returns Information Page.
International Delivery
Available - delivery costs will be calculated at the checkout.
Please note:
- Out-of-stock items will despatch on a similar timescale once in stock.
- You will be advised of any changes in the expected in-stock date.
- The delivery timescale of an order is dependent on the size of the largest item in the order, relating to the guide above.We strongly advise that you do not book plumbers until your goods have arrived and have been checked, we are not liable for any plumbers costs, consequential loss or compensation in any way.
5
1 customer review
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4th May 2011
Competitively priced
Alex from oxfam
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For further information on our finance partnership, please visit our finance page.
Current Item

Worcester-System-Greenstar 24i System
Discontinued