Greenstar i System (9kW to 24kW) Greenstar i System (9kW to 24kW) Greenstar i System (9kW to 24kW)
Greenstar i System (9kW to 24kW) Greenstar i System (9kW to 24kW) Greenstar i System (9kW to 24kW)
Download ErP Data Sheet

This efficiency rating icon is for a product within a range of products. View all products in this range

Greenstar i System (9kW to 24kW) overview

Our Greenstar i System boiler is our most popular system boiler that is suitable for small to medium sized homes.

This boiler can also be used with our high efficiency Greenstore cylinders for a complete Worcester system solution for your home.

 Earn 10 points with these products on the Greenstar Reward Programme

Download our easy guide, which covers everything you need to know about the Greenstar i System (9kW to 24kW)

Features & Benefits

Wall mounting jig providing pre-plumbing and rear piping as standard
Low lift weight
Single panel front for ease of removal
Central heating flow temperatures can be adjusted using simple up/down button
Plug & play optional Worcester controls available*
Fan can be removed with just one screw and the expansion tank is now inside the boiler
Large siphon inside - eliminates risk of condensate pipe freezing †
Achieves an A+ ErP efficiency rating for heating when installed with a Wave smart internet connected control (Excludes 9kW variant)
Commissioning information for easier completion of the Benchmark checklist
Homeowner service reminder
Scan and register the boiler using our FREE online registration app

Technical Details

Greenstar 9i System Greenstar 12i System Greenstar 15i System Greenstar 18i System Greenstar 21i System Greenstar 24i System
Part number 7 733 600 011 7 733 600 010 7 733 600 009 7 733 600 008 7 733 600 007 7 733 600 006
ErP Efficiency Rating
A
A
A
A
A
A
ErP Data Sheet ErP Data Sheet ErP Data Sheet ErP Data Sheet ErP Data Sheet ErP Data Sheet ErP Data Sheet
Solar Compatible
Wave Compatible *
EasyControl Compatible **
Control Options
Dimensions (mm) height x width x depth 710 x 400 x 330 710 x 400 x 330 710 x 400 x 330 710 x 400 x 330 710 x 400 x 330 710 x 400 x 330
Clearances (mm) above, sides, below and front 30, 5, 200, 600 30, 5, 200, 600 30, 5, 200, 600 30, 5, 200, 600 30, 5, 200, 600 30, 5, 200, 600
Maximum horizontal flue (mm) 4600 4600 4600 4600 4600 4600
Maximum vertical flue (mm) 6400 6400 6400 6400 6400 6400
Ingress protection rating IP20 IP20 IP20 IP20 IP20 IP20
Wall mounting jig supplied
Central heating output (kW) 9 12 15 18 21 24
Minimum inlet pressure (bar) N/A N/A N/A N/A N/A N/A
NOx emissions (mg/kWh) 36 45 42 50 49 49
Lift weight (kg) 30.9 30.9 30.9 30.9 30.9 30.9

*With installation of optional built-in diverter valve

† The Condensesure Siphon has been proven to be effective at preventing frozen condensate at -15°C for a sustained period of 48 hours. 32mm pipework must be used and should not exceed 3 metre

**The EasyControl adaptor is required for the Bosch EasyControl to work with our Greenstar oil boilers and our range of regular boilers

Related Accessories

Part number
Security fixing kit 7 716 192 261
Boiler Accessories Part number
Greenstar Comfort wall mounting plate 7 733 600 039
Remote pressure relief valve kit 7 716 161 071
Below boiler pipe cover 7 716 192 608
Earth bonding strip 7 716 192 686
Greenstar i System ErP internal diverter valve kit 7 733 600 089
Heat exchanger cleaning kit 7 733 600 091
ISM1 Intelligent Solar Module 7 716 192 068
CondenseSure 7 716 192 746
EasyControl Adapter 7 736 701 560
Flashing Kits Part number
Pitched roof flashing kit (100mm & 125mm dia) 7 716 191 091
Flat roof flashing kit (100mm & 125mm dia.) 7 716 191 090
Flue Part number
High level horizontal telescopic 60/100mm flue kit 7 733 600 0482
Support bracket 6 pack (100mm dia.) 7 716 191 178
Support bracket (125mm dia.) 7 716 191 179
Support bracket kit (100mm dia.) 7 716 191 177
Long telescopic flue kit (100mm dia.) 7 716 191 171
90º bend (125mm dia.) 7 719 003 664
45 degree bend (100mm dia.) 7 719 003 665
1000mm extension (125mm dia.) 7 719 003 666
Horizontal flue kit (125mm dia.) 7 719 003 7022
Support bracket kit 6 pack (100mm dia.) 7 716 191 173
Support bracket kit (125mm dia.) 7 716 191 174
90º elbow 60/100 7 719 002 348
60/100mm (x2) 45º bends 7 716 191 085
Vertical BF kit (125mm) 7 719 002 4312
Vertical BF kit (100mm) 7 719 002 4302
High level horizontal flue adaptor (125mm dia) 7 719 002 433
High level horizontal flue adaptor (100mm dia) 7 719 002 432
2m flue extension (100mm dia.) 7 716 191 172
Short flue extension, 220mm (100mm dia) 7 716 191 133
Support bracket kit (100mm dia) 7 716 191 092
90º bend (100mm dia.) 7 716 191 084
1000mm extension kit (100mm dia.) 7 716 191 083
Standard telescopic horizontal flue kit (100mm dia) 7 716 191 0822
Plume Part number
Plume management kit (60mm dia) 7 716 191 086
Plume management terminal guard round (60mm dia.) 7 716 191 176
90º bend 7 716 191 088
45º bend (x2) 7 716 191 089

Can't find the literature you're looking for?

Visit our dedicated literature section where you can search by product name, serial number and more.