Repressurising Vaillant boiler with no filling loop

[Monkeywrench99]

Got an old Vaillant boiler that’s showing an F22 low pressure error message. Boiler doesn’t have a filling loop (boiler person has mentioned this before). Any ideas how I can repressurise it without a filling loop? Pic of the pipework attached. Cheers.

 

[oldbuffer]

1. The filling loop may be elsewhere, e.g. under the kitchen sink?
2. Some Vaillants have a built in filling loop. Has two grey plastic handles, just underneath the boiler.

 

[Monkeywrench99]

Sadly, no, it doesn’t have a filling loop (my boiler service man has even confirmed that (boiler is old)). No plastic handles, just the metal pipes pictured.

 

[opps]

How to repressurise a boiler | Vaillant

Boilers can lose pressure over time, causing the entire heating system to shut down. Read our guide to find out how to repressurise a combi boiler system.

www.vaillant.co.uk

The above covers repressurising boilers with no filling loop.

 

[mcmoby69]

Last really old vaillant I attended had the filling loop next to a downstairs toilet. Cold water supply to the toilet and a radiator circuit next to each other. Boiler was 20 feet away.