10 Year guarantee^*

Vortex Blue: External Combi

The intelligent VortexBlue Combi incorporates the latest Riello RDB BLU burner technology and combines it with our award-winning Vortex stainless steel heat exchanger.

The external range features a high quality, external powder-coated casing and built-in frost protection designed for all weather conditions

The Grant VortexBlue Combi features large heat exchangers which, due to their low water content and larger surface area, vastly increased the hot water performance.

a Heating b Water

Features & benefits

*10-year guarantee when installed by a G1 accredited installer (T&C’s apply)
Award winning range
Available in outputs of 21, 26 and 36kW to suit a range of properties.
90.8 - 94.56% Space heating efficiency
Neon diagnostic indicators making fault diagnostics easier
With a low system pressure cut off switch, the combi protects itself in the unlikely event of system water loss.
The boiler features two very accurate electronic temperature controls which allow the boiler to operate in condensing mode on central heating whilst maintaining its instant hot water production.
Uses the market leading Riello Blue Flame burner which as the name suggests produces a blue flame, rather than the usual yellow colour of the standard burners fitted in our current Grant Vortex range. This results in a much cleaner combustion process and added benefit of producing extremely low NOx emissions.
24ltr expansion vessel
Factory-fitted multi-directional flue saving time at installation stage

Martin Roberts warms up with a Grant VortexBlue

Case Study

Out with the old and in with the Blue!

Case Study

Blue flame technology

Grant and Riello’s R&D have together successfully matched and field trialled this new range of innovative appliances.

As the name suggests, the flame produced is blue in colour, rather than the usual yellow colour of the standard burners fitted in our current Grant Vortex range, which results in a much cleaner combustion process. All of the Grant VortexBlue boilers operate at the very high efficiency levels expected of the Grant Vortex condensing range and have the added benefit of producing extremely low NOx emissions.

In 2018, oil fired boilers installed in the UK will have to meet lower NOx emission targets. Furthermore, it is likely that even more stringent emission levels will be set in future years, so Grant have taken the decision to try and future proof oil fired appliances by moving to very low NOx, Blue Flame technology today.

Specification

Product code	Model	Set Output	Max Output	Weight	Height	Width	Depth	Efficiency	NOx Emissions	Tappings Flow/Return	Burner	Energy Rating	Load Profile	Energy Label	Product Fiche
VTXBFOMCOMB21	Grant VortexBlue External Combi 21	21kW	21kW	181kg	945mm	658mm	966mm	90.81	Class 3	22mm	Riello RDB Blu	a Heating b Water	XL	View	View
VTXBFOMCOM26	Grant VortexBlue External Combi 26	26kW	26kW	206kg	945mm	658mm	966mm	91.71	Class 3	22mm	Riello RDB Blu	a Heating b Water	XL	View	View
VTXBFOMCOM36	Grant VortexBlue External Combi 36	36kW	36kW	225kg	945mm	658mm	966mm	94.56	Class 3	28mm	Riello RDB Blu	a Heating b Water	XL	View	View