Greenstar Heatslave II External Greenstar Heatslave II External Greenstar Heatslave II External
Greenstar Heatslave II External Greenstar Heatslave II External Greenstar Heatslave II External
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Greenstar Heatslave II External overview

Our Greenstar Heatslave II is the UK's most popular external oil combi boiler with flow rates up to 22l/min.

Suitable for small, medium and large sized properties, this boiler features a robust weatherproof cabinet and a one piece stainless steel primary baffle and cross firing burner.

The next generation Heatronic 4i digital control unit provides accurate control and diagnostic information.

Download our easy guide, which covers everything you need to know about the Heatslave II

Features & Benefits

Cross firing burner
One piece baffle for quick and easy servicing
Easy access oil and hydraulic connections
Digital control offering precision heating and hot water control
Lightweight aiding installation
Front access for routine servicing, including a pivoting expansion vessel for ease of access
Compatible with our Greenstar Comfort controls
A robust, durable external cabinet that blends in with the garden
IP45 Protection – protecting the boiler from water, dust and external elements
5 year guarantee on Worcester primary heat exchanger
80/125mm room sealed flues with lengths of up to 8m available
Plume management of up to 5m with conventional and flexi-flue kits also available

Technical Details

Greenstar Heatslave II External 12/18 Greenstar Heatslave II External 18/25 Greenstar Heatslave II External 25/32
Part number 7 731 600 168 7 731 600 169 7 731 600 170
ErP Efficiency Rating
B

A

B

A

B

A

ErP Data Sheet ErP Data Sheet ErP Data Sheet ErP Data Sheet
Control Options
EasyControl Compatible
Solar Compatible
Central heating output (kW) 18 25 32
Dimensions (mm) height x width x depth 950 x 640 x 770 950 x 640 x 770 950 x 640 x 770
Clearances (mm) above, sides, below and front (H) 600 x (W) Refer to Installation Manual x (D) 600 (H) 600 x (W) Refer to Installation Manual x (D) 600 (H) 600 x (W) Refer to Installation Manual x (D) 600
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Related Accessories

Boiler Accessories Part number
CondenseSure 7 716 192 746
Greenstar Comfort wall mounting plate 7 733 600 039
EasyControl Adapter 7 736 701 560
Flue Part number
90º flue bend 7 716 190 034 Installation Manual
Stainless steel flue terminal guard 7 716 190 050
Plume Part number
Plume management kit 7 716 190 092
Plume management 45º bend 7 716 190 094
Plume management 90º bend 7 716 190 095
1,000mm extension 7 716 190 093

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