The Grant Vortex Pro Range of external modules offers the same unique features as the Eco External modules including the factory fitted multi-directional flue, high quality external powder coated casing, built in frost protection, mains isolating switch and a test switch.

However, in addition, the boilers have a higher efficiency level and are factory wired to receive an ‘optional’ RF (radio frequency) wireless programmer. In this situation, the receiver can be plugged into the control panel of the module, enabling the boiler to be operated using a remote controller from any room inside the house, without the need for hard wiring.

Features and Benefits:

• Electronic Condensing Internal Combination Boiler
• Sleek Finish
• Fitted with Tried and Trusted Riello RDB Lo-NOx Burner
• Exceptionally Quiet Operation
• Award-Winning Unique Grant Vortex Stainless Steel Heat Exchanger
• 21kW Output
• Annual Efficiency: 89.5- 91.6% (Gross SAP2009)
• Size: 945mm x 658mm x 754mm (HWD)
• 5 Year Manufacturer Guarantee (When Installed by a G1 Accredited Installer)

Frequently Asked Questions:

• What is the difference between the Grant Vortex boiler and the Grant VortexBlue boiler?

  The Grant Vortex boiler range uses a low NOx yellow flame burner, whereas the Grant VortexBlue boilers uses an ultra-Lox blue flame burner. The combustion head on the VortexBlue’s burner is specially designed to re-circulate the combustion gases. Re-circulating the combustion gases in this way significantly reduces NOx emissions and produces the clean blue flame which gives the technology its name.

• What size of boiler do I need?

  Before selecting your new boiler, Grant recommend requesting that your installer performs a heat loss estimation of your home to ensure that you select the most appropriate size and type of boiler. Heat loss depends on the efficiency of any heat retaining methods that can be implemented in your home, for example loft insulation, double glazing, cavity wall insulation, draught proofing, etc. These practises could mean that your new boiler may need to be smaller than the one that it is replacing.

• Can I run a new Grant Vortex boiler on an older heating system?

  As long as the system is thoroughly cleansed and updated to fully pumped operation, it is possible to run a Grant oil boiler on an older heating system.

• Can I use my existing flue system for my new Grant boiler?

  Unfortunately, in most cases you will not be able to use an existing flue system with a new boiler. Condensing boilers have a lower flue gas temperature which can lead to harmful condensation in the chimney/flue. You will need to ensure that you install a Grant approved flue system which is stainless steel and sealed securely at the joints to prevent it from leaking. All Grant external modules come with a factory fitted flue system.

• How often should a Grant boiler be serviced?

  Grant recommend that an oil boiler operating on kerosene should be serviced every twelve months, and an oil boiler operating on biofuel or gas oil should be serviced bi-annually.

• I’m worried that my oil supply could run out, how would this affect my system?

  Grant recommend keeping your oil tank filled as required to ensure that the oil does not run out. If your oil supply does run out, you should contact a qualified oil heating engineer to bleed the system once the tank has been filled. It is recommended that after filling, a period of about an hour is allowed for any sediment that has been disturbed in the oil tank time to settle before operating the boiler. With an oil boiler, there is a risk of air and contaminants that sit in the bottom of your oil tank (water and sludge) reaching the oil line and ultimately the burner. This will affect the operation of your boiler, however maintaining an adequate oil level in the tank can prevent this from happening and causing further damage.