I have a Valliant ecotec boiler which is occasionally showing fault F22. The pressure is very low on the gauge. Clearly the boiler needs re-pressurising.
The filling loop consists of a pipe covered in what looks like a silver braid. There are valves opened by flathead screws at both ends.
One side of the filling loop enters into the boiler on a pipe marked CH return. At the other side of the filling loop there is a 3rd valve (again opened by a flathead crew) which then enters into the boiler (either cylinder return or cold water main). There are two more pipes which T in, one between the values, the other on the boiler side. Here is a diagram.
[code:1]
+--------------------------+
| Valliant ecotec |
| boiler |
| |
+--------------------------+
CH | |cylinder return or cold water main
return| |
| +--------------- Unknown
| |
| [(-)] Valve 3
| |
| +-------------- Unknown
| |
Valve 1 [(-)] [(-)] Valve 2 (water gushes from here)
| |
| |
-----------
filling loop[/code:1]
I tried to re-pressurise the boiler by opening combinations of these values. When I try to open the valve marked (2), water started to gush out from around the side of the screw. The water stopped when I turned the screw back to the original position. I could not hear water entering the boiler system. The pressure on the pressure gauge did not rise.
I'm not sure which valve (or valves) I need to open or how these screw valves operate. Does anyone know if the valves are anti-clockwise to open and clockwise to close? Is the closed position when they cannot be turned any further in the clockwise direction? Does anyone know where there is a diagram showing the usual connections to the boiler and filling loop.
Any help very much appreciated.
The filling loop consists of a pipe covered in what looks like a silver braid. There are valves opened by flathead screws at both ends.
One side of the filling loop enters into the boiler on a pipe marked CH return. At the other side of the filling loop there is a 3rd valve (again opened by a flathead crew) which then enters into the boiler (either cylinder return or cold water main). There are two more pipes which T in, one between the values, the other on the boiler side. Here is a diagram.
[code:1]
+--------------------------+
| Valliant ecotec |
| boiler |
| |
+--------------------------+
CH | |cylinder return or cold water main
return| |
| +--------------- Unknown
| |
| [(-)] Valve 3
| |
| +-------------- Unknown
| |
Valve 1 [(-)] [(-)] Valve 2 (water gushes from here)
| |
| |
-----------
filling loop[/code:1]
I tried to re-pressurise the boiler by opening combinations of these values. When I try to open the valve marked (2), water started to gush out from around the side of the screw. The water stopped when I turned the screw back to the original position. I could not hear water entering the boiler system. The pressure on the pressure gauge did not rise.
I'm not sure which valve (or valves) I need to open or how these screw valves operate. Does anyone know if the valves are anti-clockwise to open and clockwise to close? Is the closed position when they cannot be turned any further in the clockwise direction? Does anyone know where there is a diagram showing the usual connections to the boiler and filling loop.
Any help very much appreciated.