Vaillant Eco Tec 831

[Steve @ TheHeatingHub]

I'm looking through the manual but can not find the allowed minimum pressure that the bolier would be allowed to run on.

I'm pretty sure it is 20mb but not 100%

Does anyone know off the top of thier head ?

 

[Plouasne]

Does it not depend on the gas its burning??

 

[Steve @ TheHeatingHub]

Well I was at work today and as doing a gas rate on a 831.

At the meter there was 20mb working pressure but at the inlet pressure test point on the bolier only 16mb. (Gas run Prolly blocked)

I said it was At risk as you should not exceed a loss of 1mb between the meter and appliance.

The guy I work with said it was not to current standards as the boiler is working.

The Viper book says it is ID.

So reading a little apprently if the pressure at the appliance is enough to run the boiler (at the manufactors minimum requirements) it is not to current standards.

Ended up sticking a red report in to the boss to clean/re run the pipe

Just did not exactly what was the right thing to do.

 

[newbie1]

the manuf inst will have the min pressure boiler can work at did u gas rate as well
the main prob here is why its loosing so much pressure between the meter and the boiler

 

[Steve @ TheHeatingHub]

The answer was 17mb-25mb are the allowed settings to run the bolier.