dpmiller

Are you selling us something @Amy?

gonna say all those ratings are for loads hanging on a wall, *not* pull-out force off a ceiling. I'd definitely want a spreader at least but a nog for preference.

^ agree with @JohnMo on this one. But if you really wanted to there's- https://www.ventilationland.co.uk/product/38437/vent-axia-sentinel-kinetic-advance-wi-fi-receiver-module.html

what are your fan speeds?

as above, airflow at each terminal and overall fan speed need controlling for both supply and extract. Plus any overhead you fancy to guarantee positive or negative pressure overall...

what style of outlets are they? Some screw in and out, some systems need orifices changing, and then you've got overall fan speed too.

how many watts of a difference do you think there'll be between two already-efficient pumps?

I'd always seen RS's pricing as building in the shipping cost...

^ not sure if anyone other than RED modulate heating flows in that manner? Has the OP confirmed that this particular ASHP has an internal circulation pump, and that it is actually functioning correctly?

has the pump got 2 cables plugged in or just 1 mains supply? PWM pumps have a second signal wire to tell them what to do...

^ chap that did our screeding had a similar story. Dyed-in-the-wool Ford man, til about three years back when his last Transit left him stranded twice, parts took for ever to arrive, and then the repair was botched for good measure. He's now in a MAN sprinter clone and will *never* touch Ford again.

that's only the odo on the dash, what about the one embedded in the ECU (s)?

the drawing in the catalogue shows two rectangular rubber plates on a sprung mount, 90deg apart. If the drawing is accurate that means opening one port and closing the other only requires 90deg as it's switching from one plate closed, to the *other* one closed. But I've never been inside one of these so can't confirm. /edit or is there in fact only one valve plate? @Nickfromwales?

The wired remote is literally a clone of the front panel, but you can only fit one AFAIK so I'm presuming you're actually just fitting boost switches in the other rooms? In control mode 1, you can set a time period for "normal" and it will drop back to "low" outside those times. Obviously you can set low to be as low as you want. The front panel button operates Boost. In control mode 2 you can toggle between speeds using the front panel button, plus three of the input terminals can connect to a 3-way switch for manual selection of a speed. Appendix 1 of the manual details this alternative mode.

According to the PDF, your Sunvic is motor-on, motor-off, with slipseal, and the image implies it's 90deg from side to side.. Have you got the shaft 180degrees out of position maybe? Or could it be a different valve "under the cover"?

we're not in Ireland tho, and the Irish vehicle test is the NCT. PSV /public service and (more likely) LGV/ light goods are the applicable tests for that class of vehicle but the term is used a bit interchangeably, never mind that some vans can be taxed as cars too and then would be MoT'd...

can this time not be adjusted in the menus?

100% might be the max limit. On our CoolEnergy, there are settings for min and max, and for a higher startup setting (probably to ensure the flowmeter trips before settling back into deltaT control) as well as the actual deltaT across the ASHP.

the Ecoforest looks like it's actually rated at 13kW?

You'll not find much with that rating as it's USA only. It translates to an F7 filter in EU- speak and you should find that quite a few units can have F7s or better installed. I'm more than happy with our vent-axia although I'm sure some on here will tell you that only the fancy European Passiv- approved units are worthwhile

yes.

circulating pump is running and air is bled?

a pump's flow can add or remove a surprising amount of pressure

yes, the chain isn't so critical. Presuming the parts interchange and there's no real wear, why not just use the old shaft so you can have the smaller sprocket?

oversizing the mounting holes on the bracket for the motor would be an option, and slather a load of grease on it, white "plastic" grease or PTFE bicycle grease (very similar)) would be my choice