Adria twin boiler drain down (1 Viewer)

Dave_E

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Sep 21, 2019
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Trying to drain down the truma combi 4e boiler but can't see a valve to do it.Any ideas.
 

Riverbankannie

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Mar 11, 2016
10,432
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Bristol
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IH 630 RL PVC
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Mine looks like this and is situated by the boiler.
8ADC1BC6-9698-47CB-9057-3F2EC7BB6276.jpeg
 
Jan 8, 2013
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Dronfield - Derbyshire
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Burstner Lyseo 690G
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Happy FLT since 2011
Lift the yellow lever--- You should have an automatic frost valve on the boiler that will open at about 3 degrees.

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Dave_E

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Sep 21, 2019
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No yellow valve to be seen.I wonder if you drain it using the frost valve which.is about 2 ft. Away.
 

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Dec 10, 2013
3,419
11,953
South Staffs
Funster No
29,333
MH
Pilote P740GJ
Exp
Since 2013
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.

Truma-Trumatic-Drain-Valve-Frostcontrol-Set-2-8-BAR-Years-0-15-32in
 
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Dave_E

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Sep 21, 2019
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Many thanks everyone.Do you suggest I leave the frost valve open until I next use it.

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Nov 23, 2011
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durham
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Lowline
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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.
 
Oct 13, 2016
1,050
896
Grays - Essex - UK
Funster No
45,568
MH
Mercedes Hymer B680
Exp
Been moho’ing for a time now
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

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Dave_E

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Sep 21, 2019
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All done let the winter do it's worst.Many thanks.
 
Jan 8, 2013
8,478
11,516
Dronfield - Derbyshire
Funster No
24,202
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Burstner Lyseo 690G
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Happy FLT since 2011
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?
 
Oct 13, 2016
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896
Grays - Essex - UK
Funster No
45,568
MH
Mercedes Hymer B680
Exp
Been moho’ing for a time now
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

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denisejoe

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Aug 6, 2014
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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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