Description
The pinnacle of the Vaillant boiler range, ecoTEC exclusive is the ultimate in energy efficiency, low consumption and running costs.
Combining our complete range of smart technologies and features, you can be sure you’re fitting the very best when you fit new ecoTEC exclusive. As well as providing great performance, the new ecoTEC exclusive intelligently manages consumption and output to keep all its components running at peak performance, for longer, providing a low maintenance solution that you can rely on.
The ecoTEC exclusive range consists of two large output combination boilers with extra condensate technology, and a single system boiler, which includes an integrated diverter valve for the first time in UK Vaillant history.
Optimum boiler performance, control and efficiency:
- Staggering modulation of 1:10, which gives the boiler a high level of efficiency with lower fuel bills. The boiler can adapt itself to give only the exact heating output you require ultimately lowering fuel; bills. Much like pressing the gas pedal of your car to adjust power and speed
- Hand assembled in Derbyshire by one operative from start to finish, in our award winning manufacturing plant.
ecoTEC exclusive is 85% recyclable at the end of its life - Green iQ Mode – Outstanding eco-credentials from Vaillant’s latest boiler range, which optimises running cycles, results in even lower gas consumption and the boiler is highly recyclable (85%) at the end of its life
- High power, 43kW output model available – Delivers Vaillant’s highest ever flow rate of 17.8 l/min
- Compatible with Vaillant’s vSMART™ heating control
- Standard 2 year warranty, can be upgraded to a free 7 year warranty when registered through Vaillant Advance
- Option to purchase extended warranty up to 10 years when registered through Vaillant Advance
Specifications
| Technical data | Unit of measure | ecoTEC exclusive 835 | ecoTEC exclusive 843 |
|---|---|---|---|
| General | |||
| Boiler type | combi | combi | |
| Signature model output | 35kW | 43kW | |
| Article number | 0010017064 | 0010017065 | |
| Gas Council number | 47-044-66 | 47-044-67 | |
| Boiler dimensions (HxWxD) | mm | 720 x 440 x 406 | 720 x 440 x 474 |
| Heating | |||
| Nominal heat output range at 50/30˚C (Condensing mode) | kW | 3.9 – 26.4 | 4.8 – 36 |
| Nominal heat output range at 80/60˚C (Non condensing mode) | kW | 3.4 – 24.6 | 4.3 – 33.4 |
| Maximum flow temperature | ˚C | 80 | 80 |
| Flow temperature range | ˚C | 30 – 80 | 30 – 80 |
| Flow temperature factory setting | ˚C | 75 | 75 |
| Approximate condensate volume at 50/30˚C | litres/hr | 2.48 | 3.37 |
| Modulation (max/min) | 1 : X | 1:10.4 | 1:10.1 |
| Domestic Hot Water | |||
| Maximum heat output for water generation | kW | 35.3 | 43.4 |
| Lowest water pressure to operate boiler | bar | 0.35 | 0.35 |
| Lowest water flow for operation | l/min | 1.5 | 1.5 |
| Lowest water pressure for maximum flow rate | bar | 0.8 | 0.8 |
| Domestic hot water flow rate (at DT = Δ35K) * | l/min | 14.5 | 17.8 |
| Domestic hot water flow rate (at DT = Δ42K) | l/min | 11.7 | 14 |
| Hot water output temperature range | ˚C | 35 – 65 | 35 – 65 |
| Mechanical | |||
| Expansion vessel size | litres | 10 | 10 |
| Gas inlet connection (pipe size) | mm | 15 | 20 |
| Heating flow and return connections (pipe size) | mm | 22 | 22 |
| Hot and cold water connections (pipe size) | mm | 15 | 15 |
| Heat exchanger material | Stainless/Aluminium | Stainless Steel | Stainless Steel |
| Boiler lift weight (Dry boiler) | kg | 47.5 | 55 |
| Performance | |||
| NOx class | 5 | 5 | |
| NOx (En 15502-2-1 | mg/kWh | 35 | 36 |
| ErP efficiency | % | 94 | 94 |
| ErP decibel rating (sound power) | dBa | 43 | 51 |
| Fluing options | |||
| Maximum horizontal flue length 60/100 | m | 5.5 | 5.5 |
| Maximum vertical flue length | m | 8 | 8 |
| Maximum horizontal flue length 80/125 | m | 32 | 32 |
| Maximum vertical flue length 80/125 | m | 34 | 34 |
