Recent content by andyman22

We've moved into a house with a Vaillant system installed which I'm starting to lose my head over. Is there any obvious things standing out here as I'm very much a novice. Boiler is a vaillant 618 system, have a unistor cylinder, and I've no idea about what plan this is, aside from two zones...

Great, thanks.

Could anyone tell me if a Unistor 260 is in a utility room, is it likely to give off a lot of heat and make a small utility room (2m x 2m) unbearably hot? Never had a unvented cylinder before so unsure how much heat is lost by them in real terms.

Thanks. Running a third party off the eBus NTC, would this still give an accurate temp reading (as in would it be in the expected height on the cylinder)?

Would the boiler not always ramp up to full if the call for heat is for the DHW as it would look at flow temp? Or have you got the boiler output reduced?

Hi, we're looking to have an unvented cylinder installed and have been recommended a Unistor (as we have a Vaillant system boiler). I believe that all this can be controlled over e-bus, but I'm unsure what the advantage of this would be? Another recommendation had been an OSO Delta cylinder...

Does anyone have any experience or success of using the VR61 with non-Vaillant thermostats? Not sure if this is possible or not as I realise the norm is to connect a VRC470 & VRC81 for the two zones. As Tado can modulate the boiler over Ebus amongst others now, wondered whether this could be...

If you want to use Wave through your mobile device, have a look at the app before purchasing. I notice the Wave app on iOS hasn't been updated since March 2015, and seems to have very mixed reviews, and the fix implemented in March 2015 was to let people use a calendar which wasn't 2014!!!

If anything, I'm average.

Thanks. Have a feeling the install manual might be for them both. Is 22mm the norm for system boilers?

Excuse the very naive question, but the pipework in our house has been upgraded to 22mm. I've been looking at a few system boilers and notice on the various Viessmann's they appear to have 22mm connections for flow/return, yet on the Vaillants they appear to be 22mm for flow and return but only...

Thanks for everyone's help.

Think you're right!

Thanks. I'm kind of getting the impression that only my plumber wants me to get a 222...

Thanks. Is the advantage of the 4 pipe that there's less components and it can switch easily between the modulation for CH and quicker DHW heat?