The Greenstar 28i Junior is part of market demanding Worcester-Bosch combi boilers series.Greenstar 28i junior is available in natural gas and LPG models.The Greenstar 28i junior contains a heat cell (constructed from cast aluminium and silicon) with a large surface area such that more heat from fuel gases can be extracted and gives more efficiency.This michanism helps to reduce heating and hot water bills by 15-20%.They are up to 30% cheaper to run than older boiler.
Greenstar 28i junior boilers are highly efficient and highly cost effective. They can consume up to 90% of the gas and gives best perfomence.It is light weight easy to carry.Because of its michanism it releases less carbon dioxide in the atmosphere. Greenstar 28i junior can be installed by one person.
Pick up only NO DELIVERY - you must make arrangements to pick item up.
Key Features:
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Multi-directional fluing
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Central heating temperature control available
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SEDBUK(Seasonal Efficiency of Domestic Boilers in the UK) A-rated efficiency - environmentally friendly
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Keep hot facility - instantly heated hot water
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24 hour programmable room thermostat available
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Compact dimensions, space saving and siting flexibility
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28kW domestic hot water (DHW) output (24kW output also available for this boiler)
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Mechanical, digital and radio frequency (RF) control options available
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Includes wall mounting frame for optional vertical pipework
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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) |
400mm |
|---|
| Depth (mm) |
330mm (max) |
|---|
| Weight |
27.1kg |
|---|
| DHW flow rate @ 35°C rise |
11.4L/min |
|---|
| SEDBUK Value/band |
90.1%/Band A |
|---|
| Output to domestic hot water |
7.2 - 25kW (24,560 - 95,540Btu/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) |
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| Mains cold water inlet |
15mm compression |
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| Domestic hot water outlet |
15mm compression |
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| Gas connection |
22mm compression |
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| Pressure relief valve |
15mm |
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| Heating flow and return connections |
22mm compression |
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| Condensate connection |
22mm plastic pipe |
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| Maximum domestic water inlet pressure |
10bar |
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| Minimum domestic water inlet pressure for maximum DHW rate |
1.3bar |
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| Minimum domestic water inlet pressure to operate the appliance |
0.2bar |
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| Primary water content |
3.9 litres |
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| NOx classification |
Class 5 |
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| Wall mounting jig |
Yes |
|---|
| Filling loop |
Optional |
|---|
| Plug-in timers |
1 (optional) |
|---|
| Optimising room temperature controller |
1 (optional) |
|---|
| Condensing in DHW mode |
No |
|---|