agcowvet wrote:Old thread I know. But sounds interesting, not much call for it right around now, maybe closer to fall eh.
Best confirm w/ Honeywell, before paying for shipping, on aquastat suitability. Sting--their 240v circuits aren't like ours, there isn't a grounded neutral and 2-120v legs, it's just straight 240 for everything. Makes for much faster electric kettles and more powerful portable electric radiators.
Spent best half year of working life there five years ago, down in Southland, mainly getting calves out of cows, among other things. Smell of soft coal burning still reminds me of coming into town (worked out of Gore and Tapanui, lived in Mataura.) Good luck sounds like an interesting project. Might try a commercial supply house or service company, hydronic stuff seemed to be more common in public buildings around where I was; houses were either electric (air-source minisplits or resistance) or coal fireplace/stove (which I'm sure you know Callum, more for other folks here.)
hi agcowvet.... you where down a bit to the south of me...i'm in Dunedin....Gore and Tapanui etc were some of my teen stomping grounds....lol you wouldn't believe the increase in the numbers of dairy herds round there....its pretty much on the way to trebleing since you were here.
i have confirmed that the honeywell aquastats aren't really able to be used here....found an electrician that has dealt with them here in a school heating system.....seems the higher voltage arcs the contacts and things like that.....he said that they work ok if you pull them apart every 3 to 4 months and file the contacts like in an old points dizzy.
Plans have slightly changed, boiler is on back burners for now due to my GF loseing her job....the boiler i can make....the valves, pipes and pumps etc i have to buy....and thats not happening on one income that makes ends meet if you stretch it really thin....boiler system construction will be resumed once she finds a new job
So for next winter i am building a stoker stove....3 inch screw feeding into a machined cast iron 4 inch tuyre all mounted in/on a salvaged wood stove.....can be controled with a standard thermostat that i was given (its amazing what people will throw out because it doesn't match the light switches).
Will post pic's once its more than a pile of parts waiting to be butchered