Dometic fridge installation
Submitted: Friday, Apr 27, 2012 at 15:07
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Hi all, I just bought a second hand Dometic RM2455 to replace the old 60litre one in my old caravan. I downloaded the install instructions and it talks about wiring up the house battery and the vehicle battery separately as the brains need a permanent 12v to run all modes. I'm not quite clear on this-
For a Motor
Home the house battery and the
vehicle battery may be the same battery.
• For a caravan the 12 volt connections can only
be made to separate batteries.
When you're parked with 240v does this mean over a period of time your house battery will go flat? (I don't have a permanent charger) I do have a 20 amp 12v power supply which I run the tv, stereo etc on, could I hook up to that? Although it says to fit a 20A fuse, seems a bit over the top to run electronics.
Thanks in advance
David
Reply By: The Bantam - Friday, Apr 27, 2012 at 17:16
Friday, Apr 27, 2012 at 17:16
The 20 amp fuse is because of the high current drain when its running on 12 volts alone...it draws 175 watts on 12 volts according to my cursory reading.
If the 240V fails it will revert to operation on 12 volts
It probably needs a 12 volt supply because its automatic and it needs something to think on.
AND yes if you are parked up ya 12 volt battery will go flat over time.
If the supply you are using has a terminal voltage of 13.5 -13.8 volts it will be fine.....leave that float chargiging ya battery and run ya telly and stereo of the battery..any not consumed by the telly and stereo will go into the battery.
cheers
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484393