dpmiller

jeez that's a monster for your wee bungalow... jet's either 0.75 or 1.0 but that's quoted at a standard pressure, so the actual recommended pressure varies.

nope.

1 vs 2 ducts is more about flow restriction/noise/ duct length than room size.

your jet will be something like .55 USgal/hr and it's a one pipe system so that all the flow you need. No, a car one doesn't really do it. Your really looking at the balance between CO2 and O2 in the flue gas (it needs to be pretty badly rich before the CO starts rising in my experience) there's a kind of a knee-point in both of the gasses and you can balance them looking at flue gas temperature too. Minimum excess O2 that keeps the CO2 at specced levels, with no CO and minimum flue temps. Easy.

did oil run out when you broke the oil line at the pump? Yes? firevalve is OK.

there are other suppliers of very similar bespoke units that *will* deal direct, too.

Flame size looks good. as to the clag in the chamber, excess air can do that, as can poor fuel quality. the only way to set them up right is to do it the right way- pressure gauge and combustion analyser. That's probably worth the £75 a year as you can blow 10% efficiency up the flue as excess air... But as to this one and it's lockouts? Being a Riello makes it really difficult as the pcb uses a tapping on the motor for it's power supply, but I'm looking at the lockout chart and there are no specifics for lockout w/ NO light so I'd be suspecting the box if there's a clean 50v from the motor. Open the box and look for dry joints.

that's a LOT of rust. Pumps generally are stiff to turn as they have springs inside preloading bits. plus oil isn't compressible...

my 9.5kW unit cost a fair bit less than that.

have a dressing room beside the bathroom?

it'd be worth looking. It would be rare for such a large tank to have only one element, I'd say.

I'd say it's very pertinent. Another angle is that many of the TF suppliers will actively refuse to do a formal quote unless you've actually got planning permission, you mightn't even be able to get a guide price from some until that time. They're *that* busy...

nearest pole looks like 240v so you would certainly appear to be on the end of someone else's transformer and yes, it might need an expensive re-size to give capacity for you.

I'd expect a dry bearing to squeal like a pig as it nipped up. Does that boiler have a sight glass, or can you run it with the baffles out for a minute? You can do a rough pressure set by flame size- as big as possible without actually touching the back wall...

which one were you thinking of?

remember it's a split, doesn't make things easier...

Good thing you didn't buy it then!

do you have an accumulator?

the default setup on my ASHP was return temp too, but "return" in this case is a wandering probe that could instead be in a buffer tank. I've now re-set it to flow to try. Power consumption seems very similar in both modes. In both cases my external probes tell me that return temp pretty much matches the circulating temp in the slab, but the delta and pump speed control are radically different. Tis velly interresting. I'm waiting for a flow-setter coming so I can get the pump speed best optimised. It's PWM but the limits are adjustable, plus I've got a secondary in the plant room too.

they do a kit with various fittings too or you can bodge one but a glycerine filled gauge is better, yes. Danfoss pumps are 1/8"BSP yes but I've no idea what the Riello is- the pressure gauge screws into the hole at the top of the long hex extension IIRC?

Nope, the nozzle presure will be something between 100 and 150psi.

the meter is on the "wrong" side of the Solic to my mind. But that doesn't account for a near-3kW load mysteriously turning on...

something's turning the immersion on still, I fear...

or the motor, or the control box... /hate Riello, sorry...

"a pump for RDB2 please" from your local knowledgeable wholesaler... Still no guarantee it's the pump, could be the solenoid going O/C and I don't think the pumps come with a new coil?