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PROJECT
finishes; and Geberit for mepla pipes for reticulation. These
were chosen by the developer and architect (Greg Katz)
as preferred brands, and in the case of at least the latter
because they are highly reliable. In the case of mepla piping,
says Kahan, there is also less potential for piping theft.
“We only use SABS-approved products to SANS 10400
regulations for piping and fixtures.” A rational design can be
done by the electrical or wet service engineer on the project.
Because the instant water heaters are still ‘new’ to the South
African market, there is nothing in the paperwork to actually
work from for SANS.
Pros and cons: the supplier’s perspective
Simeon Kahan, plumber at Pro Plumbing.
Instantaneous water heating occurs by passing water from
the mains cold water system past a thermostatic probe,
which heats the cold water.
While Stiebel Eltron was selected for the water heaters;
Triumph Taps, Solo Sanitary Ware, and Triumph Showers
were selected in respect of taps, mixers and other bathroom
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An instantaneous water heating system adds to the efficiency
of the building in terms of future running costs as no
electricity or water is wasted, explains Kahan. The downsides
are that a single phase unit can’t be used for baths, while
bigger units (for a family, for instance) require three-phase
electricity the same as a commercial building requires.
The building has no other water saving features such as
water harvesting or greywater systems, due to the age of
the building and tight space available, though borehole
water is apparently ‘under consideration’. This will ultimately
depend on the cost viability, as the filtration system will be a
considerable expense.
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February 2020 Volume 25 I Number 12