Vortex Pro Range Internal Combi Models

The latest Grant Vortex Combi models feature internal frost protection, 24ltr expansion vessel, neon diagnostic indicators and a factory fitted internal condensate trap (this can be sited externally if preferred), all designed to make installation and servicing easier. The Grant Vortex Electronic Condensing Combi boilers are available in three sizes – 21kW, 26kW* and 36kW.

Grant Vortex Combi’s have larger plate Heat Exchangers which, due to their low water content and great surface area, vastly increase hot water performance. Mixing valves on the unit are pre-set at 50°C, which accurately control the hot water draw off temperature from the boiler. They also include a low system pressure cut off switch, enabling the combi to protect itself in the event of system water loss. Additionally, there are two very accurate electronic temperature controls which allow the boiler to operate in condensing mode on central heating, whilst keeping the instant production of hot water.

Combi XS Model

As many oil boilers are sold as replacement products for older inefficient appliances, which tend to be smaller in physical dimension, the size of a new boiler plays an important part in the decision of what product to fit. The Vortex Pro Combi XS is a compact 26kW boiler, developed as an addition to the existing range which means it can replace an older oil-fired combi, as it is only 515mm wide. This new boiler has almost identical characteristics on both combustion efficiency and domestic hot water performance as its larger version and utilises all of the existing components. The only difference is that the 24 litre expansion vessel, normally located behind the front door of the boiler, is supplied as an externally fitted vessel kit.

Features

Grant Vortex Combi 26kW internal – Awarded ‘Which? Best Buy 2008’
Available in four models – 21kW, 26kW, 26kW XS and 36kW
5 year guarantee when installed by a G-One accredited installer*
Suitable for kitchen installations
26kW Combi XS model only 515mm wide
24ltr expansion vessel on all models
Neon diagnostic indicators
High efficiency circulating pump
Simple and quick to install with no complicated wiring or plumbing
Unique Grant Vortex Stainless Steel heat exchanger
Extremely compact design
Riello RDB burner (with plug & socket connection)
Efficiency: 89.5 – 91.6% GROSS (SAP2009)
*terms and conditions apply

Typical Hot Water Performance
VTXCOMBI21*
15 litres per minute at an average temperature of 50°C
Recovery time 4 minutes approx. Based upon 100 litre draw off.

VTXCOMBI26 & VTXCOMBI26XS*
17 litres per minute at an average temperature of 50°C
Recovery time 4 minutes approx. Based upon 100 litre draw off.

VTXCOMBI36*
20 litres per minute at an average temperature of 50°C
Recovery time 3 minutes approx. Based upon 100 litre draw off.

MAINS WATER PRESSURE
Minimum 2.5 bar (36 psi)
Maximum 8 bar (115 psi).

*Hot water flow rate is dependant on mains pressure available. Figures based upon an incoming mains water temperature of 10°C.