Vaillant ecoFit Pure 835 (ErP) Combi Boiler, Horizontal Flue and Clock Kit

Vaillant ecoFit Pure 835 (ErP) Combi Boiler, Horizontal Flue and Clock Kit

The ecoFit Pure 835 is part of Vaillant’s compact, very quiet combination boiler range (Quiet Mark approved). This kit comes with a horizontal flue and a mechanical clock. A small footprint and plenty of choice over where it goes mean it suits most of your customers’ homes, while automatic purging assistance and a high spec aluminium heat exchanger keep the installation light to handle.

• ErP rated model
• High efficiency pump, for lower energy use and reduced standby losses
• Updated case with a smarter look
• Supplied with the horizontal flue and the mechanical clock
• 2 year warranty as standard, rising to 5 years when fitted by a Vaillant Advance installer

Specification

• Brand: Vaillant
• Maker code: 0010020391

Common Questions

Is the Vaillant ecoFit Pure 835 a combi boiler? Yes, the 835 is a compact combi, so it runs your radiators and gives you hot water on demand without a cylinder.

Is the Vaillant ecoFit Pure 835 a good boiler? It’s compact and very quiet, with Quiet Mark approval, a high-spec aluminium heat exchanger and an efficient pump. You get a two year warranty, or five years if a Vaillant Advance installer fits it.

What comes in this ecoFit Pure 835 kit? The boiler itself plus a horizontal flue and a mechanical clock for setting your heating times.

Should I pick the ecoFit Pure 835 or the smaller 825? They share the same features, but the 835 has the bigger output. It’s the one to go for if your home uses more hot water.

How do I repressurise a Vaillant ecoFit Pure boiler? With the boiler cool, open the filling loop and top up until the gauge reaches the pressure given in your user guide, then close it again. If the pressure keeps dropping, get a Gas Safe registered engineer to find out why.

How do I reset a Vaillant ecoFit Pure if it locks out? Use the reset on the control panel as shown in the user instructions and give it a minute to fire back up. If it keeps locking out, stop resetting it and call a Gas Safe registered engineer.

Can I fit the ecoFit Pure 835 myself? No, a gas boiler has to be installed by a Gas Safe registered engineer, who will also commission it and register it for you.

Datasheets

• Vaillant ecoFIT pure 825-835 Installation and Maintenance Instructions (PDF)