Drain or not to drain

Dec 31, 2010
1,764
13,668
Dunfermline - Scotland
MH
van conversion
Exp
Since 2007
The Context - I have a Truma Combi E/6E UK version heating boiler in my Autosleeper Symbol. This boiler has a frost dump valve that drops the boiler contents non electronically when the temperature reaches 3 degrees.
It also has a manual dump facility too; the water tank also has an electric heater fitted too. Through the winter it is my intention to use our mh about once a fortnight or so dependent on the weather.
My mh is stored on our drive and connected to the mains!

The Problem - As I intend off site use during these periods I wonder if I should drain and refill my Truma and water system to avoid frost damage. Is this necessary? Or can I leave my water system filled?


Norman
 
Sep 25, 2009
473
312
south yorkshire
MH
coachbuilt
Exp
since 2004. Tugger 10 years on and off
I would definitely drain.It only takes one freezing night & you forget & you may be looking@ an expensive repair:unsure:
 
Nov 18, 2011
10,020
19,340
Drain it you know it makes sense I use my van every day but in the winter if I am not going to be staying in it I drain it down.
it is only a case of closing two valves and filling it up usually fill it when at the garage while filling my tank.
when we go away for weekends it takes min
 
Nov 18, 2011
10,020
19,340
I am living in my van this week so I will be keeping every thing full but when I am on my way hone I will open dump on hater and tank and dump disconnect pump and drain.
I don't worry to much abut a bit of water in pipes as long as its clear of tamps and pump.
I just usually blow down tap and shower hose to clear most of the water as we hook up the van and have frost protection.
It only takes fivee min to get water back on board it we go away.
bill
 

Soaringman

Free Member
Jan 24, 2012
263
295
Somerset
MH
A Class
Exp
March 2012
Hmm this is totally different to my experience, am I doing something wrong?
I have my MH on the drive and hooked up. I have the heater on minimum. So if we get a cold night the heater comes on therefore can't freeze.
Interested to hear if there is a problem with this??
 
Nov 30, 2009
7,256
23,550
West Yorkshire
MH
PVC the PUG
Exp
Since 2009
We drain ours every time we come home from a trip and put it back in storage. Leaving the taps open. We also open all the cupboards .
We also clean it all and Hoover it.
Doesn't take long . We use the Motorhome every other weekend sometimes more , all year round.
 
Jun 30, 2013
4,543
6,396
Cotes d'armor, France
MH
Burstner Harmony TI 736 G
Exp
Since 1987
Hmm this is totally different to my experience, am I doing something wrong?
I have my MH on the drive and hooked up. I have the heater on minimum. So if we get a cold night the heater comes on therefore can't freeze.
Interested to hear if there is a problem with this??
We do exactly the same, heating is on low ( 10˚C) through the winter anytime when we aren't using it. The dump valve is next to the Truma boiler so is kept nice and warm. Then we just fill the water tank and go.
One thing I would worry about if I kept draining everything is the in-tank water pump being dry and seals shrinking. We have thermostatically heated water tanks too, so we never fully drain the fresh water tank till we are going to use it again, then we drain fully and fill up immediately.
Allan
 

GJH

LIFE MEMBER
Aug 20, 2007
28,441
36,099
Acklam, Teesside, originally Glossop
MH
Burstner t625 Harmony
Exp
Since 2006
Hmm this is totally different to my experience, am I doing something wrong?
I have my MH on the drive and hooked up. I have the heater on minimum. So if we get a cold night the heater comes on therefore can't freeze.
Interested to hear if there is a problem with this??
Not a problem as such but you are heating an empty van when there may be no need. Fine for those who can afford it but not a solution otherwise.

I used to leave an oil filled radiator on during the first few years we had a van but then decided to see what happened without it. The answer was nothing - and that was the 2010/11 winter.
 

Minxy Girl

LIFE MEMBER
Aug 22, 2007
18,536
18,215
E Yorks
MH
Globecar Campscout
Exp
Since 1996
Always drain down, it's not just the boiler, but the pipes, water pump, taps etc, that can freeze and split if it gets cold enough ... not worth the risk of having a flooded van!
 

Gorse Hill

Free Member
Feb 2, 2013
2,368
1,952
Stretford
MH
Burnster Ixeo IT 734
Exp
2000
Hmm this is totally different to my experience, am I doing something wrong?
I have my MH on the drive and hooked up. I have the heater on minimum. So if we get a cold night the heater comes on therefore can't freeze.
Interested to hear if there is a problem with this??
I do the same, however I recently posted a question in relation to damp reading report for my first hab check by dealer and a number of experienced funsters replied not such a good idea to leave heater on
see recent post under damp reading
 
Jun 11, 2011
296
340
Wiltshire
MH
A class
Exp
2005
hya i also put winter windscreen washer fluid down all plug holes to stop the traps from splitting they can be a real pain to replace
 
Mar 29, 2011
867
517
Rugby UK
MH
C Class RS
Exp
2011
After tugging for 30 years I knew all about winter prep and drained everything, BUT, I forgot that water sits in the pump and it cost me a new one in the first winter in 2011 , now I drain everything before leaving site and leave everything open on the drive home, no problem since
 
Jan 3, 2013
865
1,198
Mayenne, France
MH
Rapido
Exp
Since 2010
Our van is parked close to the house so it's quite easy to keep it warm by either leaving the heating on low or plugging in a small oilfilled radiator.

The only time I'd drain ours down in the winter is if we are going to be away overnight and not taking the van.

If we're away in the van in the winter we wouldn't drain the system each night but leave the heating on a low setting, so if we leave the heating on a low setting or use oil filled rad. while on the drive why would I feel the need to drain down then?
 
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