Wallas heater

My current boat came with one, but no instructions other than the previous owner's parting comments, which proved sufficient. You just throw the electric switch (choice of full power or half power on mine), then wait a few minutes while it does its stuff. Switching off seemed strange first time -- nothing seemed to happen for about 10 minutes because it goes through some sort of shut-down routine. Since then it's proved faultless and efficient. Doesn't seem to use much paraffin, but is a significant electrical drain.

I've since heard that it's vital the exhaust is plumbed in such a way that water cannot find its way back to the heater, since it would trash the catalyser on which the device depends. So far, touch wood, good piece of kit.

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The only thing to look out for is a small overheat button that pops out if there is a problem. .
I have the instructions for the 2400 if you want them copied.

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I have used a 1300 model for more than 12 years with just one service. Great piece of kit, totally reliable. Must be wired direct to power source so that there is no risk of shut down without full cooling period (approx ten minutes after burner is switched off). If you have specific query, just ask.

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Agreed, terrific bits of kit. My 1600 is now exactly 20 years old, has been used for the last seven years full time cruising and has never broken down. Oooops!! Shouldn't have said that I suppose!! Agree also that it is essential that the power to the unit NOT turned off before the set 'cooling down' period has elapsed and it has switched itself off. Failure to do this almost always results in the electronic wizardry dying.

Cheers
Jerry

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Thanks to all who responded. Have just bought the boat and Evasion 32, without any instructions. Greenwichman does not accept PM, but I need to understand the comment connect direct to power source. I am rewiring the boat now, and have not made provision for the heater. Any idea of whether an 8 amp feed would be OK, that is 12 amp supply fused at 8 amp. We will just have to remember a shutdown routine, as the electrics will go via a master switch, which will isolate the battery bank, as the solar panels kick in to top the batteries up

<hr width=100% size=1>Def: Yachting - a way of spending the kids inheritance
 
You ought to connect the Wallas directly to the always live terminal of the battery switch, relying on "procedure" when you might be in a hurry to leave the boat is risky. The heat soak from the burner could melt wires and/or even cook the electronics board if the fan isn't running to cool things down. Also anything "plastic" leaning against the exhaust pipe near the top of the unit might get damaged.

Can't remeber the starting current but I think it is about 5 to 7 amps. You would be safer with a 10A fuse and 15A wiring but the latter depends on the length and the resulting voltage drop. Once running, the current drawn is supposed to be 2A or less depending on model, this low current drain being one of the main selling points of the Wallas paraffin fueled heaters.

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I have a 2400 which must be 18 years old. I can get you a copy of the manual if you do not obtain it from other sources. I am trying to find out what service requirements there are or what spare parts may be required though it seems from this that the answer is none!



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