Our customer in Purley had a boiler fitted by Hot Water & Central Heating in 2005, and was in the process of having a bathroom refitted.
Their old gravity water system cylinder was in the way of a new shower enclosure.
We worked alongside their bathroom installers (Visions) to swap over from a vented bathroom setup to a new unvented cylinder in the loft.
Our customer is a retired chemical engineer, and he specified one of the first Vaillant weather compensated heating systems when we originally installed his Vaillant ecoTEC 630 boiler in 2005.
Naturally, he decided to go for a Vaillant unvented cylinder, in this case the uniSTOR 260. He now has what Vaillant describe a ‘total system solution’. This is where the boiler controls know the precise hot water temperature in the cylinder, and modulate the boiler output according to the scale of the task.
In a Vaillant total system solution there is no separate timer and programmer, all the heating and hot water is controlled from a single wall mounted controller. We had fitted a Vaillant VRC400 back in 2005, but recently this has been superceded by the new VRC430, and as this was an inexpensive upgrade, our customer chose to have the newer model fitted at the same time.
The uniSTOR was sited in the loft space, involving a considerable amount of pipework and subsequent lagging.
We also upgraded the water supply from the garage, to give the best possible performance at the taps.
Connected to a suitable water supply, unvented hot and cold water systems give a performance level similar to that obtained from a shower pump without the noise and unreliability associated with the latter.
They have to be installed by a qualified installer and the safety devices suitably installed; in our case, we ran the emergency discharge pipe in 28mm copper in a discrete corner of the property, rather than using the nearer back of the house, which would have been unsightly.