Vortex Pro: External Combi

a Heating b Water

10 Year guarantee^*

Ideal for installations where space inside the home is limited, the Grant Vortex Pro External Combi range delivers high efficiencies and excellent hot water performances.

All three Grant Vortex Pro External Combi boilers have a high quality, external powder-coated casing, built-in front protection and a factory fitted, multi-directional flue. Designed with the installer in mind, each of these oil boilers is also supplied with a 24ltr expansion vessel as standard.

Product
Information

Features & Benefits

Awards & Accreditations

Case Studies

Specifications

Downloads

Features & benefits

*10 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
Models include 21kW, 26kW and 36kW
Achieves space heating efficiencies of 90.81 – 94.5%
Designed for all weather conditions with durable external casing, built-in frost stat and factory fitted internal condensate trap
24ltr expansion vessel supplied as standard with all models
Feature Grant’s stainless steel heat exchangers with Riello’s latest low NOx burner
Factory fitted multi-directional flue
Neon diagnostic indicators enable user-friendly operation
This range is biofuel compatible (depending on the type of biofuel and % blend)

Awards & Accreditations

Case Studies

Grant boilers combine choice, quality and service to be an installer’s favourite oil boiler brand

Case Study

G1 Installer Highly Commended with Grant boiler installation

Case Study

Riello RDB BX Burner

All of Grant’s floor standing Vortex oil boilers feature the Riello RDB BX low NOx burner. To help heating engineers understand the design and operation of these burners, Grant has a ‘Toolbox Talk’ video which talks through the features of this burner.

Head over to Grant UK’s YouTube Channel to watch this and other useful tutorial videos.

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
VTXOMCOMBI21	Vortex Pro External Combi 21	21kW	21kW	181kg	945mm	658mm	754mm	90.81	Class 2	22mm	Riello RDB	a Heating b Water	XL	View	View
VTXOMCOMBI26	Vortex Pro External Combi 26	26kW	26kW	206kg	945mm	658mm	754mm	91.71	Class 2	22mm	Riello RDB	a Heating b Water	XL	View	View
VTXOMCOMBI36	Vortex Pro External Combi 36	36kW	36kW	225kg	945mm	658mm	754mm	94.56	Class 2	28mm	Riello RDB	a Heating b Water	XL	View	View