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vaillant ecotec exclusive boiler front service repair installation replacement
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Vaillant EcoTec Exclusive Green IQ 835 843

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IMPORTANT: We don't sell boilers on its own. We offer this product only if fully installed in your property. For the latest price and suitability please click the button above to book your free home survey.


The pinnacle of the Vaillant boiler range, ecoTEC exclusive is the ultimate in energy efficiency, low consumption and running costs.

Read more on the manufacturer’s website

Category: Vaillant Combination Boilers Tag: Vaillant
  • Description

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 dataUnit of measureecoTEC exclusive 835ecoTEC exclusive 843
General
Boiler typecombicombi
Signature model output35kW43kW
Article number00100170640010017065
Gas Council number47-044-6647-044-67
Boiler dimensions (HxWxD)mm720 x 440 x 406720 x 440 x 474
Heating
Nominal heat output range at 50/30˚C (Condensing mode)kW3.9 – 26.44.8 – 36
Nominal heat output range at 80/60˚C (Non condensing mode)kW3.4 – 24.64.3 – 33.4
Maximum flow temperature˚C8080
Flow temperature range˚C30 – 8030 – 80
Flow temperature factory setting˚C7575
Approximate condensate volume at 50/30˚Clitres/hr2.483.37
Modulation (max/min)1 : X1:10.41:10.1
Domestic Hot Water
Maximum heat output for water generationkW35.343.4
Lowest water pressure to operate boilerbar0.350.35
Lowest water flow for operationl/min1.51.5
Lowest water pressure for maximum flow ratebar0.80.8
Domestic hot water flow rate (at DT = Δ35K) *l/min14.517.8
Domestic hot water flow rate (at DT = Δ42K)l/min11.714
Hot water output temperature range˚C35 – 6535 – 65
Mechanical
Expansion vessel sizelitres1010
Gas inlet connection (pipe size)mm1520
Heating flow and return connections (pipe size)mm2222
Hot and cold water connections (pipe size)mm1515
Heat exchanger materialStainless/AluminiumStainless SteelStainless Steel
Boiler lift weight (Dry boiler)kg47.555
Performance
NOx class55
NOx (En 15502-2-1mg/kWh3536
ErP efficiency%9494
ErP decibel rating (sound power)dBa4351
Fluing options
Maximum horizontal flue length 60/100m5.55.5
Maximum vertical flue lengthm88
Maximum horizontal flue length 80/125m3232
Maximum vertical flue length 80/125m3434

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Information

Our London office:
Unit 2, Somers Place Industrial Estate
SW2 2AL, London

Our Surrey and West Sussex office:
Unit 5, Lawson Hunt Industrial Park
Broadbridge Heath, RH12 3JR, Horsham

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