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Thanks for the info, just having a look in the manual and it says Note: Proportional-pressure mode is not recommended in heating systems that includes an automatic bypass valve to ensure a minimum flow for the heating appliances. and I think I do have an automatic bypass valve. I'll give CPI...

As part of a recent overhaul of my open vent central heating system, the old British Gas Grundfos Multihead pump was replaced with a new Grundfos UPS3 15-50/65. The new pump, even on setting I seems far to fast for my system. Even on setting I the sound of water being forced under pressure...

I did mine last year with 3m solid oak uprights. I put approx 2ft into the ground. With the way the ground slopes, to maintain a level top I have between 6ft and 8ft above ground. I have clay soil and I used post cement to fix the uprights. Been in a year now and not moved

I went ahead and had the Evohome system installed recently, with hot water kit and 8 HR92's. 7 of the 8 zones are working fine, but 1 zone (always the same one) keeps demanding 100% even though the measured temp is above the setpoint. For example setpoint is 16, measured temp is 16.5, radiator...

Sorry, should have said. Evohome does everything I need it too on paper, so I bought the setup, but install and configuration is proving to be a right PITA

Agreed, but I've already invested in Evohome now.

Yeah i realised last night while I was thinking about it in bed. The thermostats (HR92) are bound to the controller not the BDR91 I think I'm getting there and the penny is dropping (slowly) OpenTherm wireless bridge replaces BDR91 as boiler control. So... in my S Plan system - R8810A...

Reading from another forum. "The 1 promising match (p 22 wireless relay box to control a zone valve) only allows a single evohome zone to control the relay." So wouldn't work with multiple HR92 radiator thermostats. Power up and bind a Wireless Relay Box (BDR91) to control a Zone Valve Make...

That would also make sense, as I understand for hot water you'd want to run the boiler at high power / higher flow temp. Higher than you'd normally have for the heating loop in order to quickly heat the water tank. Which is what OpenTherm allows you to do. Makes sense you'd want shut the...

Unless that's just for when you're using the controller as single thermostat not the multi zoned setup

I found this, direct from Honeywell, which seem to say that Hot water priority will only work if there's two zone valves. Yet there own installation manual says to use just one with stored hot water and zoning. What you are suggesting, binding BDR1 as a heating valve not boiler control, makes...

Since posting I've found that Evohome regards one BDR91 as Hot Water zone valve, and the other as boiler control. So an S-Plan system with a BDR91 on each zone valve. The heating valve would be opened every time hot water was called for. Might as well connect the heating BDR91 directly to the...

Hi, My central heating is an S-Plan system with 2 port valves. And I'm looking at fitting the Evohome setup with hot water kit and zoning using HR92 on the radiators. The installation guide for S-Plan system & 2 port valves, uses 1 BDR91 for the hot water port valve and the other for the...

Thanks

I'm building a freestanding garden pergola, and I think I've messed up on the cross beam sizes ☹ The posts are 100x100mm and I ordered 88x32mm cross beams. The slats are also 88x32mm and its all in green oak. The largest span is 2.4m and I'm not sure now that my cross beams are big enough to...

Yes a lap joint looks similar, or half a lap joint anyway. Like this kind of cut https://i.ytimg.com/vi/joFoPcBhf4Y/maxresdefault.jpg The guy in this video shows the same kind of cut I need. Since my posts are 100mm square I was hoping a circular saw with 62mm cut depth might do it in 3 cuts...

I'm building a garden pergola. The posts are 100x100mm green oak. And I need to cut a rebate in the top of the posts to fit the 88x32mm cross beams. What would be the correct power tool for this ?

I hadn't seen that link no. I've totally screwed it up now anyway. The pond itself wasn't level, maybe 3" or so of plastic showing above the waterline at one end. And overflowing the other end. So I emptied the water out, lifted the pond out put a bit of sharp sand at the lower end. And now it...

Hi, I'm about to install one of those pre-formed waterfalls (watercourse?) it's called "Bermuda Watercourse". Anyway, does anybody have any tips for installing one of these ? More specifically the best way to go about bedding it in. As far as I understand, I need to create a big pile of sand...

This is the switchbox I've got, so 3 pumps and the UV filter all go back to this https://www.screwfix.com/p/british-general-ip66-13a-4-gang-4-way-weatherproof-outdoor-switched-power-controller-with-led/20964 I did think about running armoured cable underground from the switch box to a junction...