Grant Vortex Pro Utility 46–70kW Heat Only Oil Boiler

Grant Vortex Pro Utility 46–70kW

The Grant Vortex Pro Utility 46–70kW is a high-output, condensing oil-fired heat-only boiler designed for larger residential and commercial-style heating applications where substantial space-heating capacity is required.

The model is identified by Grant as VTX46/70. It has a 64kW factory set output and a maximum output of 70kW, making it one of the highest-output boilers in the Vortex Pro Utility range. Grant lists the model with an A-rated heating energy classification and 91.61% space-heating efficiency.

High-Output 46–70kW Heating Range

The Vortex Pro Utility range is designed to provide a broad choice of oil-fired heating outputs. The VTX46/70 covers applications requiring up to 70kW of boiler output.

The 46–70kW model can be factory set at different outputs within its operating range, with Grant’s burner information identifying 64kW as the factory setting and allowing commissioning adjustments where appropriate.

This makes the boiler suitable for heating projects where a conventional domestic boiler does not provide sufficient capacity.

Heat-Only Oil Boiler

The Grant Vortex Pro Utility 46–70kW is a heat-only boiler.

It is designed to provide central-heating output rather than domestic hot water directly. A suitable hot-water cylinder or other compatible DHW arrangement can therefore be incorporated into the overall heating system according to the project requirements.

It should not be confused with Grant’s Vortex Pro System models, which incorporate factory-fitted sealed-system components. Grant lists the Vortex Pro Utility System range separately and currently provides system models only up to 46kW.

Designed for Kitchens and Utility Rooms

Grant describes the Vortex Pro Utility range as being designed for kitchens and utility rooms. The range is also intended to provide a practical replacement option for older oil-fired boilers while offering modern condensing performance and updated burner technology.

The larger VTX46/70 model is particularly suited to projects requiring substantially higher heating output than typical residential oil boilers.

Efficient Condensing Oil Boiler

The Vortex Pro Utility 46–70kW uses Grant’s condensing boiler technology and Riello RDB burner technology.

Grant specifies:

• 64kW set output
• 70kW maximum output
• 91.61% space-heating efficiency
• A heating energy rating
• Class 3 NOx emissions
• Riello RDB burner
• Factory-fitted condensate trap within the boiler case

Grant’s technical literature states that the Vortex Pro Utility range can achieve efficiencies of up to 93.3%, while the specific VTX46/70 model is listed at 91.61% efficiency.

Riello Burner Technology

The VTX46/70 uses a Riello RDB burner. Grant’s burner documentation provides specific commissioning information for the 46–70kW Vortex Pro Utility model and identifies the 64kW factory setting.

The burner system is designed for reliable oil combustion and efficient operation when correctly installed and commissioned by a qualified heating professional.

Factory-Fitted Condensate Trap

The Vortex Pro Utility range includes a factory-fitted condensate trap within the boiler casing. Grant also states that the condensate trap can be positioned externally if preferred, subject to installation requirements.

This integrated arrangement helps simplify the boiler installation and servicing process.

Quiet Operation

Grant describes the Vortex Pro Utility range as exceptionally quiet in operation, making the range suitable for installations where controlling boiler operating noise is important.

Grant Vortex Pro Utility 46–70kW Specifications

Grant’s current Vortex Pro technical specifications list the VTX46/70 at 1234mm high × 563mm wide × 782mm deep, with a weight of 282kg.

Suitable Applications

The Grant Vortex Pro Utility 46–70kW can be considered for heating projects requiring high oil-fired boiler output, including:

• Large residential properties
• Country houses
• Large utility-room installations
• Multi-zone heating systems
• Larger renovation and replacement projects
• Properties with substantial space-heating demand
• Commercial-style heating applications where a heat-only oil boiler is appropriate

The correct boiler output should always be determined from a professional heat-loss calculation rather than property size alone.

Grant Vortex Pro Utility vs Vortex Pro Utility System

It is important to select the correct version.

Vortex Pro Utility 46–70kW – VTX46/70

• Heat-only boiler
• 64kW set output
• 70kW maximum output
• No factory-fitted sealed-system package

Vortex Pro Utility System

• Separate system-boiler range
• Factory-fitted expansion vessel
• Filling loop
• Pressure gauge
• Automatic air vent
• Pressure relief valve
• High-efficiency circulating pump

Grant currently lists Vortex Pro Utility System models from 15–26kW and 26–46kW, while the VTX46/70 is the high-output heat-only Utility model.

Frequently Asked Questions

What is the Grant Vortex Pro Utility 46–70kW?

It is a high-output condensing oil-fired heat-only boiler from Grant’s Vortex Pro Utility range. The model number is VTX46/70.

What is the maximum output?

The maximum output is 70kW, while Grant lists the factory/set output as 64kW.

Is the Grant Vortex Pro Utility 46–70kW a combi boiler?

No. It is a heat-only oil boiler, not an oil combi boiler. A separate hot-water storage arrangement is required where domestic hot water is needed.

Is it a system boiler?

No. The VTX46/70 is the heat-only Utility model. Grant lists the Vortex Pro Utility System range separately, with system models currently extending up to 46kW.

What is the efficiency of the VTX46/70?

Grant lists the VTX46/70 with 91.61% space-heating efficiency and an A heating energy rating.

What burner does it use?

The boiler uses a Riello RDB burner. Grant’s burner documentation provides commissioning settings specifically for the Vortex Pro Utility range.

What are the dimensions?

The VTX46/70 measures approximately 1234mm high × 563mm wide × 782mm deep.

How much does it weigh?

The listed weight is approximately 282kg.

Does it have a condensate trap?

Yes. Grant states that the Vortex Pro Utility range has a factory-fitted condensate trap within the boiler case, with the option to position it externally where appropriate.

What fuel does the boiler use?

The Vortex Pro Utility is an oil-fired boiler. Fuel selection, burner setup and commissioning must follow Grant’s current installation requirements and the applicable local regulations.

Is the Grant Vortex Pro Utility 46–70kW suitable for a large property?

It can be suitable for larger properties and heating projects requiring high boiler output, but the correct output should be selected using a professional heat-loss calculation.

Can Euro Fuel Supply supply the Grant Vortex Pro Utility 46–70kW?

Euro Fuel Supply offers heating equipment for European customers, installers, businesses and commercial buyers. Product availability, pricing and delivery should be confirmed with the sales team before ordering.