Andrews Water Heaters, part of Baxi Commercial Division, has
supplied two high efficiency, condensing water heaters and buffer
tanks which have been installed at the new RSA Academy in Tipton,
West Midlands. The Academy of the Royal Society for the
Encouragement of Arts, Manufactures and Commerce, more generally
known as RSA, opened in 2008 and has recently moved into its newly
completed building at the start of the 2010 Autumn term. This £23.5
million project provides state-of-the-art facilities for its 1100
students and aims to become a centre of excellence for the teaching
of Opening Minds, the RSA’s curriculum which encourages students to
discover information for themselves, learn how to work effectively
in teams, manage their own time and work to deadlines. The school
offers a variety of courses, including the International
Baccalaureate and facilities include a fully equipped
multifunctional theatre, sports hall, food technology rooms and
modern science classrooms. The building was designed in consultation
with both staff and, more unusually, with students, who visited the
construction site on a regular basis and incorporated some of the
practical challenges encountered there in subsequent lessons.
Sustainability was paramount in the building’s design, in order to
reduce both running costs and carbon emissions, which has resulted
in a BREEAM rating of ‘Very Good’.
The two SUPAflo condensing gas-fired water heaters were selected by
Derry Building Services due to the high demand for domestic hot
water on site as their high capacity was coupled with condensing
technology which ticked the appropriate boxes in terms of energy
efficiency. They were installed in the ground floor plant room in an
unvented system along with two storage vessels, providing domestic
hot water throughout the building which serves wash hand basins and
sinks in cloakrooms, classrooms, laboratories and kitchens as well
as showers adjacent to the sports facilities. The SUPAflo SF64
models selected each have an output of 285 kW and a recovery rate of
4,880 litres per hour through a temperature rise of 50oC.
The SUPAflo SF60 range of condensing water heaters is the latest
introduction to Andrews’ instantaneous range, designed to provide a
constant supply of hot water in large volumes for a variety of
commercial and industrial applications. This is a low water content
unit with a stainless steel finned tube heat exchanger and stainless
steel headers and manifold. The unit can operate either
instantaneously providing hot water on demand or, as in this
installation, with a buffer storage vessel and is suitable for
either vented or unvented systems. There are seven models in the
range, offering outputs from 142 to 539 kW, providing hot water
recovery rates from 2430 to 9230 litres per hour through a
temperature rise of 50ºC from a single unit.
The SUPAflo SF60 range has a net efficiency of 103% with a downward
firing, blown gas, pre-mix, water cooled burner that fully modulates
between 20% and 100% providing ultra low NOx and CO2 emissions. The
unit is lightweight, with a very small footprint which offers
greater siting flexibility, with a room sealed facility if required.
In addition to the standard features, the SF60 also comes with a gas
filter and condensate trap and has the facility to control and power
its own Bronze UPS primary circulator. The comprehensive control
panel indicates all operational and lockout status with full history
and, as in this installation, provides connection to a site-wide
Building Energy Management System.
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