December 17, 20205 yr Author 17 minutes ago, Conor said: @dpmiller RTU? Prices competitive? @Conor yes they were, and we were pretty set on hemihydrate from the beginning. The latest cement-based one for CES is apparently very good tho, I'm told.
December 17, 20205 yr 24 minutes ago, Declan52 said: Company beside me have started doing thermal bead screed. It's supposed to do away with pir insulation. That sounds interesting Declan
December 18, 20205 yr Author you need a brave thickness of it I think tho? Well we've a floor. It's solid enough to walk on, hot enough to get the whole house to 17c, and there's water p*ssing down all the windows and doors... @SteamyTea wanna have a go at how much energy 10m3 of gypsum has goiing spare as it cures?
December 18, 20205 yr 36 minutes ago, dpmiller said: you need a brave thickness of it I think tho? Well we've a floor. It's solid enough to walk on, hot enough to get the whole house to 17c, and there's water p*ssing down all the windows and doors... @SteamyTea wanna have a go at how much energy 10m3 of gypsum has goiing spare as it cures? Why did you not plaster it first. Most plasterers don't like bending down that far and you end up with a tiny curve at the bottom of wall. Not sure how deep you need it, just seen it pop up on a Facebook page. Looks like some kind of bead and a setting agent to make it rock hard.
December 18, 20205 yr Author needed to spend the lump money @Declan52. Skim will probably be a room at a time at this stage- I need habitable, not finished, for now.
December 18, 20205 yr 11 minutes ago, dpmiller said: needed to spend the lump money @Declan52. Skim will probably be a room at a time at this stage- I need habitable, not finished, for now. Makes sense now.
January 10, 20215 yr Author So that's the screed drying out nicely now. After the first week of instructed "no heat" I ran the Willis on a 15min every hour cycle for a fortnight. Then on a whim and cost be damned, I put it on continuous for a couple of days. Result is that I'm pleased to see that the heat calculations are confirmed and the house's heat requirements are indeed low. 3kW heater on continuous for 52hrs total, mean ambient temp of about 3c over the duration, raised the slab return temp from 11 to 17c and still rising- and brought room temp from 10c to 15c
January 26, 20215 yr Author So spending more money time! Heat pump ordered, Air test booked for Thursday.
January 26, 20215 yr 11 minutes ago, dpmiller said: So spending more money time! Heat pump ordered, Air test booked for Thursday. Who did you use for your air test???
January 26, 20215 yr Author going a touch off-piste for that- https://coolenergyshop.com/collections/inverter-heat-pump/products/cool-energy-invertech-ivt9-air-source-heat-pump-ce-ivt9 the full suite of Carel control gear rather than the normal Chinesium-looking fayre swung it fo me.
January 26, 20215 yr 14 minutes ago, dpmiller said: going a touch off-piste for that- https://coolenergyshop.com/collections/inverter-heat-pump/products/cool-energy-invertech-ivt9-air-source-heat-pump-ce-ivt9 the full suite of Carel control gear rather than the normal Chinesium-looking fayre swung it fo me. I'm looking at them for a heatpump/buffer/cylinder etc. Interesting to hear how you get on with it.
January 28, 20215 yr Author Blower door test done this morning. Waiting for calculated results, but the fact that the fan needed four of the eight plugs refitted to the range plate apparently means we're pretty good.
January 29, 20215 yr Author So... Air test result is in. [drumroll] 1.78 that'll do... and there was a delivery
January 29, 20215 yr Nice one. Did you do much in the way of air-tightness work? What are you doing for buffer tank and cylinder? I'm tempted to get the whole package from them.
January 29, 20215 yr Author the TF guys did the walls and round the openings, I did all the ceilings and slopes... OK so I'm doing something a wee bit odd for the CH/DHW. I'm using a 270l manual-fill thermalstore, direct to the boiler stove and indirect to the ASHP etc. Makes the boiler stove a useful member of society and means I can heat the whole house during a power failure just by running a couple of CH pumps. And yes, outages aren't that unusual round here apparently. Also means I can use the bottom quarter of the tank as a buffer.
February 1, 20215 yr Author fitting is easy, especially if you don't need to extend the 5m pre-wired sensors and controller. I did run into one slight problem, the inverter has shown the RCD out at the meter box to be dodgy. it's a 100mA type-S but was tripping out when the compressor was started. I rechecked it with the multifunction tester and while the circuit's RCBO is tripping correctly at 30mA and holding in fine, the type-S is going at under 80mA so something aint right with it. I've linked it out for now... Software seems simple enough, there are a couple of fan and pump modes I want clarification about, and I didn't have any hassle getting into the hidden installer menu. Performance? So far... 4c ambient yesterday, thermal store raised from under 30c to 55c in about an hour and a half, which confirms it's 7kW+ in these conditions. I've left it on overnight at a setpoint of 26c for the slab, and my chinesium wifi stat is telling me that the hall is now at 14c and rising, from the 9c it started off at yesterday
February 1, 20215 yr 1 hour ago, dpmiller said: fitting is easy, especially if you don't need to extend the 5m pre-wired sensors and controller. I did run into one slight problem, the inverter has shown the RCD out at the meter box to be dodgy. it's a 100mA type-S but was tripping out when the compressor was started. I rechecked it with the multifunction tester and while the circuit's RCBO is tripping correctly at 30mA and holding in fine, the type-S is going at under 80mA so something aint right with it. I've linked it out for now... Software seems simple enough, there are a couple of fan and pump modes I want clarification about, and I didn't have any hassle getting into the hidden installer menu. Performance? So far... 4c ambient yesterday, thermal store raised from under 30c to 55c in about an hour and a half, which confirms it's 7kW+ in these conditions. I've left it on overnight at a setpoint of 26c for the slab, and my chinesium wifi stat is telling me that the hall is now at 14c and rising, from the 9c it started off at yesterday What size is the thermal store?? Any pics of where is sitting and the connections to and from it.
February 1, 20215 yr 15 minutes ago, Declan52 said: it's a 100mA type-S What model RCD is it out of interest?
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