Search results

Just spoke to Vaillant Technical, and basically they believe that over-sizing (within reason) your boiler is not an issue and the system will modulate. The I stated my Radiator load (15Kw) and the cylinder load (20KW), and the 624 has come up as recommended. At the end of the day the 624 can...

The problem I am presented with is my boiler is scaled up and kettling heavily. If I add Fernox restorer now, I have a couple of weeks to run in the system before the boiler is due to be replaced. I am concerned that running the boiler is going to spead loads of crud around the CH system. The...

Thanks, I've been told by someone that Fernox do not recommend running an acid based cleaner through radiators older than 10 years. Should I just run a chemical based cleaner such as Fernox Restorer?

Sorry, what is a combimag?

Thanks for your help

I prefer to work in KW, but in old money I've got 51,000 BTU load in the form of rads on my Netaheat 10-16. I think you have to add another 6,000 for your Cylinder. All it means is if you house isn't top spec in insulation terms, your boiler will take a long time to heat the place up...

Thanks Muggles :D , on your original posting when you described how you powerflushed you didn't mention tapping the radiators with a soft mallet. Do that at the stage when you isolate every radiator appart from one? Also do you have any preference on how you connect the powerflush? My pump...

Thanks for all the advice - when you say Fernox granules, do you mean DS40? - I think this might be a bit too fearce for my 20 year old panel radiators?

Hi, I am hiring a powerflush for a day to give my system a clean prior to having a new boiler fitted. (Yes, before anyone asks, the boiler will be fitted by a corgi plumber - I am just saving on labour costs by doing this bit myself) I have been recommended KAMCO FX2 as I can use this in...

Is this something that is done on commissioning, or does the boiler do it by itself by modulating

So a bit of a debate going on between the 18 KW and the 24KW. Focussing on the statement 'its best to run your boiler flat out', what do they mean? Presumably, with a fully modulated system, and so long as you have your rads well balanced so that the return temp is the lowest, having a bit of...

Hi, I am getting a Vaillant 600 series System Boiler and auroSTOR unvented cylinder with a plan for the addition of solar next year. I have had several corgi plumbers around to give quotes, but they all seem to leave me to decide what size boiler I want. I tell you what I know, and I would be...

Oner thing to consider is legionella. Keeping your water a tepid temperatures without heating to over 60C will significantly increase your risk. I don't know anything about your system, but if you don't get any responses here, perhaps try the solar forum on the navitron website here

The reason I need a TMV is because I've got a solar cylinder. Temperatures can theoretically get up to 80C, if we get good weather (a big if). Obviously I need to protect against that with a TMV, but would prefer not to have individual TMV's at each DHW outlet, and just have a single unit (but...

I am looking for a TMV to limit the temperature of the DHW output of my unvented solar cylinder. I want to avoid a TMV which significantly reduces my flow rate, but at the right price. The Horne Heatstat T2 appears to be designed for the job. Does anyone have any other preferences?

I am concerned that a 7 month old system is not getting sufficient support from your Fitter or Vaillant (especially as I am about to have a Vaillant EcoTEC 630 fitted). What have support have you had? Is your fitter recognised by Vaillant?

Are there any significant advantages on the Aurostor over the Ariston Primo? Its just the Ariston beats Vaillant on price yet similar spec?

Hi, I'm trying to finalise a spec for my replacement DHW/CH system. I want to get in a few quotes but would like to have a fairly firm idea of what I want so that the plumbers are all 'singing from the same song sheet'. I want unvented cylinder, a system boiler, the ability to add solar on...

I am doing it for enviromental concerns, but equally cost. With the gas prices on the increase, and we plan on being in this house for hopefully 20 years, I am trying to get a system that has good lifetime costs (startup/running/maintainenance costs), plus reliability. Regarding the...

Hi, I am looking for comments on the Intelligent System Pack. If anyone has fitted this I would like to know what they thought of it. Basically I am having a replacement bolier (Greenstar 30 CDi System Boiler) and controls fitted. I like the appeal of the optimiser (delaying the start of CH...