What spanner for inaccessible nut

[Andrew May]

I need to tighten the cold water connection to a Vaillant EcoTec combination boiler. Unfortunately there are a series of connections in close proximity so my normal adjustable pliers won't fit.

Installation details for the boiler here:

the arrangement.

what is the best tool for the job?

Andrew

[Baz]

> shows the arrangement.

Hi Andrew.

I think you need to look at "Normal" spanners rather than an adjustable spanner.

If a normal one is still too thick, you can get "Thin Profile" spanners that will do the trick.

Or use an Angle Grinder to thin the ones you have.

Baz

[Andrew May]

>>> shows the arrangement.

The problem is not the thickness of the spanner but its width. The connections are effectively a series of nuts (as on a compression fitting) next to each other so the spanner cannot be put across flat because it is interfered by the nut next to it.