Adria twin boiler drain down

[Dave_E]

Trying to drain down the truma combi 4e boiler but can't see a valve to do it.Any ideas.

 

[Riverbankannie]

Mine looks like this and is situated by the boiler.

 

[Stealaway]

Lift the yellow lever--- You should have an automatic frost valve on the boiler that will open at about 3 degrees.

 

[Dave_E]

No yellow valve to be seen.I wonder if you drain it using the frost valve which.is about 2 ft. Away.

 

[daveandsan]

Do you have a frost valve, just turn the lever on top 90 deg and make sure the button at the back has popped out.

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[Dave_E]

Many thanks everyone.Do you suggest I leave the frost valve open until I next use it.

 

[ramsthom]

If its to winterise the van yes.Best to leave all taps open in midway position also. Drain fresh water and grey water tanks empty and valves open.

 

[bigalw35]

Lift the yellow lever--- You should have an automatic frost valve on the boiler that will open at about 3 degrees.

I have the Mb Hymer B 680, the whole moho is reliant on the ebl unit, when the voltage drops to about 10 volts the heater dump valve opens and drains the boiler

 

[bigalw35]

If you can’t find the dump valve try disconnecting the battery for a moment ? Then check underneath and watch for the water coming out

 

[Dave_E]

All done let the winter do it's worst.Many thanks.

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[Stealaway]

I have the Mb Hymer B 680, the whole moho is reliant on the ebl unit, when the voltage drops to about 10 volts the heater dump valve opens and drains the boiler

Eh? That's a new one one on me.
The battery voltage? Why would you let the voltage drop to 10V - that's a knackered battery?

 

[bigalw35]

That could OBVIOUSLY be a number of reasons, but trust me if I disconnect the leisure battery the little valve thingy opens and dumps the boiler water

 

[Lenny HB]

That could OBVIOUSLY be a number of reasons, but trust me if I disconnect the leisure battery the little valve thingy opens and dumps the boiler water

Those are the old ones the modern ones are mechanical no electrical connections.

 

[bigalw35]

Those are the old ones the modern ones are mechanical no electrical connections.

You are probably correct ? Mine is a 2001 model, but I love it

 

[denisejoe]

Eh? That's a new one one on me.
The battery voltage? Why would you let the voltage drop to 10V - that's a knackered battery?

If I turn the power off to the taps water system on control panel water heater dumps

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