5 Year guarantee^*

Vortex Pro: External

Each Vortex Pro External oil boiler combines Grant’s proven condensing boiler technology with the latest Riello RDB compact burner.

Grant Vortex Pro External modules offer a factory fitted multi-directional flue, high quality external powder coated casing, built-in frost protection, mains isolating switch and a test switch. Sealed system kits are also available for these oil-fired boilers, and each model has a factory fitted frost stat and condensate state.

a Heating

Features & benefits

*5 year guarantee when installed by a G1 Installer (Terms and Conditions apply)
Models range in size from 15kW up to 70kW
Achieves space heating efficiencies of 90.0 – 94.5%
Sealed system kits are available to the 15-21kW, 15-26kW and 26-46kW models
Grant’s pre-assembled sealed system kits include: an expansion vessel (size varies), automatic air vent, pressure relief valve and circulating pump. A filling loop and pressure gauge are also supplied as part of the kit. These can be fitted within the module casing, or ideally in a convenient site within the building, located between the cold main and central heating
Supplied with a factory fitted, multi-directional flue to help reduce installation time
Durable design for all weather conditions
Quiet operation
As with all of Grant’s Vortex oil boilers, this range is biofuel compatible (depending on the type of biofuel and % blend)

Grant Vortex Oil Boiler and Wave Cylinder improve heating system for Sunflowers at Grafton childcare charity

Case Study

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

Case Study

Efficiency through design

Grant’s oil boilers incorporate several design features which enable each model to work most efficiently. Each boiler utilises the patented Vortex stainless steel condensing heat exchanger and turbulator baffle system, enabling the boilers to extract energy from the latent heat which would normally be lost through the flue. This award-winning technology has been recognised throughout the industry and it is popular with heating engineers and householders alike.

One of the many reasons installers choose Grant boilers is the choice available, with a boiler to suit many installation applications. View the complete boiler range here.

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
VTXOM15/21	Vortex Pro External 15-21	21kW	21kW	109kg	879mm	385mm	734mm	90.81	Class 2	22mm	Riello RDB	a Heating	-	View	View
VTXOM15/26	Vortex Pro External 15-26	21kW	26kW	143kg	908mm	505mm	800mm	91.71	Class 2	22mm	Riello RDB	a Heating	-	View	View
VTXOM26/36	Vortex Pro External 26-36	31kW	36kW	162kg	908mm	505mm	800mm	94.56	Class 2	28mm	Riello RDB	a Heating	-	View	View
VTXOM36/46	Vortex Pro External 36-46	41kW	46kW	162kg	908mm	505mm	800mm	90.00	Class 2	28mm	Riello RDB	a Heating	-	View	View
VTXOM46/58	Vortex Pro External 46-58	52kW	58kW	274kg	1240mm	587mm	945mm	91.94	Class 2	1 1/4" BSPmm	Riello RDB	a Heating	-	View	View
VTXOM58/70	Vortex Pro External 58-70	64kW	70kW	288kg	1240mm	587mm	945mm	91.61	Class 2	1 1/4" BSPmm	Riello RDB	a Heating	-	View	View