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I have a greenhouse with polycarbonate- triwall roof I want to add two extra openings in the roof Anyone know of available kits please

As the ‘original poster’ [OP ?] I’ve not long gone as Onetap fears, I am following all replies with interest. And thanks for all the input. Well yes, I can see why he suggests that the Thermal Store is not necessary, so let me confirm my objectives. A] CH at 40C – 70C as needed B] DHW at...

Eloquent but sad, grand words but no realism, so far off target hardly worthy of response.

WHY ?

I am replacing my old boiler and rehashing the whole system. I would appreciate any helpful suggestions I will install a 300l vented Heat Store, and a 40kW Worcester 40Cdi with shunt pump between, The CH will be fed by Thermal mixer valve with manual selection. Vented system to avoid...

I am looking at a circuit problem in another post, but this query will be best considered separately; I have a 40kW boiler plus a gas fire on my standard 6.4cuMtr meter. In addition I have a second 30 kW boiler heating a swimming-pool. If all are on at one time it is obvious that my gas...

I have done the 'whole house calcs, and at first run it comes to 32kW -I assume we need some safety factor, and felt that the modulation would reduce the 40kW acceptably. Yes just one pump, The answer to the question is unclear, it could be a balancing problem but to balance 18 rads to...

Thanks D_Hailsham Sorry for my sketch, it is a two pipe system, and yes it is a 41kW output, 51kW input Concorde CX140 I am looking to replace this with a Worcester 40Cdi, hence trying to decide the pumping and control circuits The pump does seem adequate but is not...

Thanks for reply, just spent two hours trying to get diagram on page Hope the address above work xxxxxxxxxxxxxxxxx It shows the boiler output splitting into 35 & 22mm pipes The 35mm splits into two motorised valves feeding two rad circuits - each...

pumped supply

Just a thought, the Police. What is their main objective & purpose? Surely not to maintain the law! Is it not to maintain the peace? [in society] They should use the law as a tool to keep the peace, much as they use their truncheon. Laws are made for people not people mad for laws.

I have an S-plan system where one zone has 35mm outlets and another with 15mm outlets. It is impossible to balance, and the smaller pipe system is starved I want to add a small pump to this circuit and then balance that pump with the other rads What do you think

I have a chimney breast, fully open where there has been an open fire. I want to render and paint the recess then fit a wood stove.There is a lot of burnt on carbon on the bricks I cannot find a heat resistant wall-board. Maybe expandamet with sand/cement render ANY SUGGESTIONS PLEASE...

I'm new to the forum. How do I get the "quote" from a previous reply Example ; Barley wrote - & whited out ??

I had mixing valve & thermal store on my radiator circuit, a remarkably comfortable system (when I eventually worked all the bugs out of the control system ). The rads were rarely hot, usually warm, the house was always comfortable. Thanks Onestep. This is exactly my objective! I...

I would just add that the system now has 4 zones each with its own programmer and one room thermostat per zone. To reduce the heating circuit temp I vary the setting on the boiler

It is not so much wanting a wide range of control, or to adjust too frequently. With a conventional system, I would normally set the boiler at say 2. Maybe at 4 if a cold spell, and full in the worst of winter. I have 4 zones which each have a programmer. All rads have TRV's To have no...

Thanks Onetap. My reasons; I have an old 42kW boiler, 20 Radiators, long 35mm heating pipes, poor DHW flow-long runs, old header tanks in roof. I fear pressurising the Heating circuit for risk of leaks, I do want to pressurise the DHW. I prefer to remove the header tanks. I am looking at a...

I am keen to use a thermal storage tank and can find no info on the control of a central heating [rads] system temperatures. The tank will store water at 78C and I want to control the temperature in the rad circuit from say 40C to 75C My first view is to use a mixer/blending vavle as...