How to drain water efficiently from MH

[SarahBattyll]

Hello, so my camper was a self build from previous owner. Unfortunately he didn’t include any tap or way of emptying water from system. So being a newbie I didn’t drain the system entirely throughout the coldest parts of the winter (as I’ve been using it regularly) and the small amount of water I had left froze. This seemed to damage our pump which failed on us last weekend.
New pump now fitted which interestingly is so quiet compared to the old one despite being identical.
How and where do you suggest we fit a drainage tap?
Currently I can’t even see the water tank as it’s built in behind a wall in the garage area. We were told it’s a 100l tank. How does everyone else drain their water out? Also were is best place for the tap/taps?

 

[f6c]

There should be a drain tap lever next to your boiler and a dump value

 

[Figaro]

Frost protection valve for the boiler and drain tap at the lowest point on the H & C pipes
Drain tap also for the fresh water tank

 

[Bill-H]

If there isn't a drain tap anywhere (there should be !), you can run most of it out though the tap until the pump note changes as it draws air or, if the pump is in the tank and you have a way into the tank you can drop a pipe in to syphen it out, or if you can gain access through the filler pipe, you can empty most via a syphon pipe - pipe into bottom of tank, free end lower down than tank and suck until water starts to flow.
There SHOUD be a drain tape but if it's diy....

 

[royandsharont]

My tank, in a similar position to your, has a circular turn valve on its top, which is accessible through a small lift up flap in the wall. It opens the valve which drains out below through a pipe. I also open the frost protection valve near the boiler, open all taps and it all drains down. I then run the pump, which is inside the freshwater tank, too to push as much water out of the system including flushing the toilet valve.

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[PP Bear]

Firstly, call whoever converted it and gently swear at them for being so stupid and incompetent, then try to find the lowest possible place in either the tank or a pipe and fit the drain tap at that spot.

Hopefully you’ll have a drain valve fitted by the water heater, as that’ll at least drain the boiler down.

Something like these…

How Do I Drain Down My Caravan, Motorhome or Campervan? - Bristol Caravans and Motorhomes

Drain down means “draining the fresh water” out of your caravan, motorhome, campervan. This is usually undertaken at the end of the season.

bristolcaravans.com

 

[PP Bear]

Also, look on YouTube for ideas