boiler fault

[G1zm0]

hi guys , I've a glowworm fuelsaver f35 , it was full of water and I switched of electric and valves and found this . (pics).
can this be saved?, there was loads of rusty water or do yous think the heater exchange will be burst. ..it was during to cold snap , and boiler hasn't been on.

 

[ianmcd]

One of the pipes has pulled from the olive, probably by frost damage, doesnt mean the heat exchanger is damaged though, you will need to remake the joint and fill the system to see if the heat exchanger is damaged

 

[old duffer]

One of the pipes has pulled from the olive, probably by frost damage, doesnt mean the heat exchanger is damaged though, you will need to remake the joint and fill the system to see if the heat exchanger is damaged

frost damages (what does that even mean) causes a pipe connection (been connected for a long time) to come loose!
Can you explain how this "frost damage" can do this please

 

[G1zm0]

the boiler is situated outside in a room,only a wooden door and lagging separate it from elements.
it was -11 and the pipe.going to red expansion tank was frozen and the water tank in loft was frozen to ice.

don't know what made these pop, but system had brown rusty water and it was full (4 buckets).

 

[denso13]

Can you explain how this "frost damage" can do this please

Water freezes and therefore expands which pushes pipes out of fittings, which are generally the weakest point. Simples...

 

[ianmcd]

Water freezes and therefore expands which pushes pipes out of fittings, which are generally the weakest point. Simples...

Horse water comes to mind

 

[G1zm0]

so is this just as simple as securing pipes back In , check circuit board is dry, filling up and see if any leaks then try.fire up?

 

[old duffer]

Water freezes and therefore expands which pushes pipes out of fittings, which are generally the weakest point. Simples...

so what happens with contraction? where does the pipe then go?

 

[denso13]

where does the pipe then go?

No where, it needs to be reinserted mechanically.

 

[old duffer]

No where, it needs to be reinserted mechanically.

so the water inside froze, and instead of expanding in all directions it chose to expand in a vertical plain until the pipe was clear and then having pushed it out it also pushed it to the side so vertical and then horizontal because of ice. Why would it not have just split the pipe as well?
https://www.engineeringtoolbox.com/volumetric-temperature-expansion-d_315.html can you do the calculation using this formula? I'm struggling to get the result

 

[fixitflav]

so the water inside froze, and instead of expanding in all directions it chose to expand in a vertical plain until the pipe was clear and then having pushed it out it also pushed it to the side so vertical and then horizontal because of ice. Why would it not have just split the pipe as well?
https://www.engineeringtoolbox.com/volumetric-temperature-expansion-d_315.html can you do the calculation using this formula? I'm struggling to get the result

Water expands approx 10% on freezing, which is why icebergs are 90% submerged. The additional volume has to go somewhere. If a long section pipe froze it would probably split it. If you're lucky and it's near a joint it might push it out, so it can be refitted with no harm done. I'm sure it's still somewhat fluid as it freezes, so doesn't have to expand in all 3 directions at once. If it's in a pipe near a not too strong joint it will expand along the pipe.