Greenstar CDi Highflow Professional

Greenstar CDi Highflow overview

Ultra powerful heating

The CDi Highflow is a powerful, floor standing boiler that delivers hot water of up to 25 litres/min, making filling a bath quick and effortless. It’s simple too, with easy-to-use controls and displays, and still small enough to go under a kitchen counter – with frost protection, when installed inside. This product comes with a 10 year guarantee, and is fully customisable via simple boiler control knobs or add-on controls.

Standard Guarantee

7 Year

With any Greenstar System Filter

8 Year

With any Greenstar System Filter + £40 (Non-WAI loyalty members only)†

10 year

†Available to loyalty scheme members only. Non-WAI’s can achieve this extended guarantee length with an additional payment of £40. Terms and conditions apply.

Features & Benefits

Powerful – Plenty in the tank for 2-bath homes	Convenient - Fits under the kitchen counter	Rapid comfort - Powerful home heating for speedy warmth
SimpleSwitch - From a previous Highflow for simpler installation	Resilient - Frost protection included	Scan and register the boiler using our free Worcester Bosch Professional App

Technical details

Greenstar Highflow 440CDi LPG

Part number: 7 731 600 099
ErP Efficiency Rating: B

A
ErP Data Sheet: ErP Data Sheet
Fuel Type: Gas (LPG)
Control Options
EasyControl Compatible
Solar Compatible
Central heating output (kW): 29.2
Dimensions (mm) height x width x depth: 850 x 600 x 600
Clearances (mm) above, sides, below and front: 15, 5, 200,600 (fixed surface) & 25 (compartment door)
Maximum horizontal flue (mm): 4000
Maximum vertical flue (mm): 6400
Ingress protection rating: X4D
Max DHW output (kW): 29.5
Hot water flow rate 40°c ∆T (litres per minute): 0
Minimum inlet pressure (bar): N/A
Lift weight (kg): N/A

Greenstar Highflow 440CDi

Part number: 7 731 600 098
ErP Efficiency Rating: B

A
ErP Data Sheet: ErP Data Sheet
Fuel Type: Gas (NG)
Control Options
EasyControl Compatible
Solar Compatible
Central heating output (kW): 29.2
Dimensions (mm) height x width x depth: 850 x 600 x 600
Clearances (mm) above, sides, below and front: 15, 5, 200,600 (fixed surface) & 25 (compartment door)
Maximum horizontal flue (mm): 4000
Maximum vertical flue (mm): 6400
Ingress protection rating: X4D
Max DHW output (kW): 29.5
Hot water flow rate 40°c ∆T (litres per minute): 20 @ 40°c ∆T
Minimum inlet pressure (bar): 1.5
Lift weight (kg): 112

Greenstar Highflow 550CDi LPG

Part number: 7 731 600 101
ErP Efficiency Rating: B

A
ErP Data Sheet: ErP Data Sheet
Fuel Type: Gas (LPG)
Control Options
EasyControl Compatible
Solar Compatible
Central heating output (kW): 30.6
Dimensions (mm) height x width x depth: 850 x 600 x 600
Clearances (mm) above, sides, below and front: 15, 5, 200,600 (fixed surface) & 25 (compartment door)
Maximum horizontal flue (mm): 4000
Maximum vertical flue (mm): 6400
Ingress protection rating: X4D
Max DHW output (kW): 41.1
Hot water flow rate 40°c ∆T (litres per minute): 0
Minimum inlet pressure (bar): N/A
Lift weight (kg): N/A

Greenstar Highflow 550CDi

Part number: 7 731 600 100
ErP Efficiency Rating: B

A
ErP Data Sheet: ErP Data Sheet
Fuel Type: Gas (NG)
Control Options
EasyControl Compatible
Solar Compatible
Central heating output (kW): 30.6
Dimensions (mm) height x width x depth: 850 x 600 x 600
Clearances (mm) above, sides, below and front: 15, 5, 200,600 (fixed surface) & 25 (compartment door)
Maximum horizontal flue (mm): 4000
Maximum vertical flue (mm): 6400
Ingress protection rating: X4D
Max DHW output (kW): 41.1
Hot water flow rate 40°c ∆T (litres per minute): 25 @ 40°c ∆T
Minimum inlet pressure (bar): 1.5
Lift weight (kg): 112

Flow rate shown is only until the heat store is depleted. Once the heat store is depleted, it is advisable to reduce the flow rate to maintain the DHW temperature at the outlet.

Related Accessories

Boiler Accessories	Part number
Greenstar Comfort wall mounting plate	7 733 600 039
EasyControl Adapter	7 736 701 560				Installation Manual

Flashing Kits	Part number
Flat roof flashing kit (100mm & 125mm dia.)	7 716 191 090
Pitched roof flashing kit (100mm & 125mm dia)	7 716 191 091

Flue	Part number
1000mm extension kit (100mm dia.)	7 716 191 083
90º bend (100mm dia.)	7 716 191 084
Support bracket kit (100mm dia)	7 716 191 092
Short flue extension, 220mm (100mm dia)	7 716 191 133
60/100mm (x2) 45º bends	7 716 191 085
Horizontal flue kit (125mm dia.)	7 716 191 1572
Vertical BF kit (100mm dia.)	7 716 191 1562
Vertical BF kit (125mm dia.)	7 716 191 1582
RS telescopic flue kit (100mm dia.)	7 716 191 1552
Flue Connector Vertical 60-100	7 716 191 164
Flue Connector Vertical 80-125	7 716 191 165
1000mm extension (125mm dia.)	7 719 003 666
45 degree bend (80/125mm dia.)	7 719 003 665
90º bend (125mm dia.)	7 719 003 664

Plume	Part number
Gas 45º bend (x2)	7 716 191 089
Gas Plume 90 deg elbow	7 716 191 088
Gas Plume management kit	7 716 191 086

Want to learn more?

Introducing the Greenstar Comfort Controls
Introducing the new EasyControl
ErP Easy as ABC

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