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An alternative to multiple pumps is to use 3 way ball valves something like this: This layout enables a few different "modes" Pump water from the inlet to the outlet - perhaps moving water between containers Filter water from inlet to outlet - picking up water from container, filtering it...

It was a bit chilly this morning (1c , -1c apparent) out near lake Clarendon (QLD) so I fired up the AC and set it to 28c @ 5:10am It took ~ 11 minutes to reach 28c and during this time the AC was pumping ~ 4300W of heat using just over 1100W of electrical energy. Once the set point was...

Not yet! We're using a whole bunch of these cards - http://www.ebay.com.au/itm/8-Channel-USB-Wireless-5V-Relay-Module-Xbee-Remote-Control-Kit-/221126230067 Everything inside and out is switched via one of these relay boards which are connected together using an Xbee Series 2 industrial...

We use the Victron gear for solar too. The 70A model for the 1200W on the roof and the 15A model for the 400W of portable panels. Sticking with a single supplier you get some neat integration across the entire power system -

Have you looked at the Victron Multiplus? The 1600VA 24v unit is $1395 from http://www.outbackmarine.com.au/MultiPlus-C-24-1600-40-16-Inverter-Charger-Victron-CMP241620000-S.5975 Its half the weight of the ICISS unit with similar power handling ability. The big advantage for RV use is...

I'm not convinced they're all that much cheaper, especially when supporting larger loads like a microwave or toaster oven. e.g.. T105 has a nominal 250Ah rating but rating falls to just 166Ah with a 100A (~1000W AC) load like a toaster oven or microwave. Assuming we only want to discharge to...

http://www.expeditionportal.com/forum/threads/83962-NPS-Camper-Build Induction hotplates, electric HWS, mitsubishi heat pump, 255L AC fridge, and an espresso machine :) No generator or hookup required. If its overcast for a few days we need to be mindful of energy usage or we can run the...

definitely not that :) its very inefficient compared to a decent split system. Our 6800BTU split system uses less power than that unit yet has more than twice the output. The big issue is working out how to install a split system on most trucks... Perhaps the outdoor unit could be broken down...

What about buying a split system like the MHI SRK20ZJX and workout how to disassemble then mount the various components to suit your truck? Twice the efficiency = half the power you need to generate and store. Have you considered moving to lithium? that would simplify charging as they'll accept...

2002 (4HG1 engine) I'm not sure if it would fit? It has the vacuum pump on the back.

Hi All We have the original 24v alternator from our truck (since replaced with 130A beastie) available for a carton of beer (or bottle of sauv blanc) to a good home. It was removed in working order and includes belts.

The 350-400volts might require a bit of a re-wire and some new inverters etc :)

Although it has a nice grey vinyl cover over it now :)

I'm not sure there is enough clearance? could you mount the camper a bit higher to ensure it doesn't drag on the ground? ;)

Its the 2nd most efficient AC available, something must be getting lost in translation from metric to that weird system you guys use ;) Except the COP as per the chart is 5.56 , so using the "EER = COP * 3.41" formula we get the the EER as 19... pretty close to what I calculated originally...

So the "real" EER 6824BTU / 350W = 19.5 ? Pretty big step up from the R22 models of just a few years ago! We have no problem running it 24/7 on solar over summer which is what we set out to achieve. Its starting to get a bit cooler now so it'll be interesting to see how it goes heating the...

Isn't that the metric EER? http://www.buildingscience.com/documents/digests/bsd-113-ground-source-heat-pumps-geothermal-for-residential-heating-and-cooling-carbon-emissions-and-efficiency suggests that the imperial EER can be calculated by multiplying the metric EER * 3.1412 , which gives the...

Correct if me i'm wrong: 2000W output = 6824BTU/hr 6824BTU/hr / 350W input = 19.5 EER ? Its a MHI SRK20ZJX-S : Measured consumption with my fluke scopemeter 125 is ~173W (AC) on low. The batteries see ~200W due to inverter conversion losses. Its a variable speed compressor so its output...

If i've got the conversion correct our R410 unit has an "imperial" EER of 19.5 (2000W of cooling for 350W of input , a metric EER of 5.71) There is no problem running it on a small 350VA inverter with a modest solar setup during the day. Running it overnight does require a decent sized...

See if you can find an inverter (variable speed compressor) window AC unit? Our inverter split system draws 350W flat out and less than 200W on low. Runs fine on a Victron 350VA inverter if I run it in "silent" mode which limits the draw to ~ 250W