The Grant Vortex Boiler House VTXBH46/70 is a high-capacity, floor-standing oil-fired boiler engineered for robust deployment within dedicated plant rooms, garages, and cellars. Delivering an expansive thermal output between 46kW and 70kW, this powerful unit is specifically designed for large domestic properties and light commercial applications requiring substantial space heating and hot water provision. The boiler features Grant’s unique stainless steel heat exchanger technology coupled with an advanced turbulator baffle system, ensuring an exceptional ErP A-rated space heating efficiency of up to 92.7% while minimising operational fuel consumption.

Encased in a distinctive red powder-coated chassis, the unit boasts compact dimensions of 1078mm in height, 542mm in width, and 765mm in depth, allowing for straightforward integration into restricted utility spaces. The boiler is fitted with an externally mounted Riello RDB low-NOx burner, guaranteeing clean combustion and straightforward maintenance access for servicing engineers. Fully compatible with Grant EZ-Fit flue systems and capable of running on specific biofuel blends, the VTXBH46/70 represents a highly durable, future-proofed solution for off-grid heating infrastructure.

Q: What is the exact thermal output range of this unit?
A: The boiler is configured to deliver a high-capacity output ranging from 46kW up to a maximum of 70kW.

Q: Is the burner accessible for routine servicing?
A: The unit features an externally mounted Riello low-NOx burner to facilitate rapid maintenance and component inspection.

Q: Can this boiler operate on alternative fuel mixtures?
A: The system is engineered to be biofuel compatible, depending on the specific blend percentage and fuel grade.

Q: What material is used for the primary internal heat exchanger?
A: The core heat exchanger is constructed from heavy-duty stainless steel to resist corrosion and maximise thermal transfer.