Heating, Ventilation & Insulation
“There were long periods of time with
no requirements for hot water, then
sudden high demand as production
areas need deep cleaning. Running
out of hot water would result in
substandard cleaning, especially the
removal of grease, and industrial
cleaning products used to clean many
of the surfaces. Another deciding factor
for the site - Rinnai’s ability to resist
Legionella breeding which is a risk
with a “lukewarm” hot water system.
With Rinnai continuous flow units
water temperature for distribution is
accurate to ±1˚C. The fact that there is
no stratification as there is no storage,
ensures a continuous, permanent even
temperature. There is no requirement
to heat a volume of water just to ensure
the elimination of Legionella bacteria
as the minimum temperature that a
continuous flow unit achieves is in
excess of advisory levels. This precision engineered unit can
also be combined as multiple units
into one single, easy to handle module
incorporating cascade frames and
common flue. Both the HDC 1200
internal and external models turn in
a market leading energy performance
of 107% net efficiency and offer
superlative ranges of modulation as
the systems internal analytical system
can modulate the burner modulation
range from 54kw to 2.4kw. The Rinnai
HDC 1200i is engineered for minimal
energy wastage and maximum energy
performance.
The modular nature of the Rinnai
Systems also removes a single point
of failure from the hot water system,
ensuring hot water will always be
available and not run out. The site
used 3 x HDC1200i Natural Gas Water
Heaters and also featured the Rinnai
Limescale Protection Package. Rinnai is the only manufacturer that
can supply a complete range of internal
and external ultra-high efficiency
condensing continuous flow water
heaters, aligned not only to comply
but surpass changes on the regulatory
horizon.
The Rinnai HDC 1200i continuous
flow hot water unit has the capacity to
easily deliver in excess of 1560 litres
of hot water in excess of 50 degrees C
temperature per hour, with an overall
gross efficiency of more than 95%.
These levels of performance, with
unbeatable efficiency levels, mean the
Rinnai 1200i is more than capable of
meeting and exceeding the hot water
demands of all applications.
It is worth remembering that Part L
of the Building Regulations 2013 has
set minimum thermal efficiency levels
of 90% for natural gas and 92% for
LPG, consequently outlawing non-
condensing gas fired water heaters for
use in new build projects.
Rinnai units and systems are now the
number one choice for any size of site
or large building or business with a
heavy demand for constant hot water
or where high peaks of demand occur at
certain times. Any number of modules
can be manifolded, so the water
handling capacity is truly infinite and
there is no risk of the ‘cascade’ of hot
water ever running out.
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The manifolded 1200i units can be
delivered direct to site in one complete,
easy to manage package and at a very
competitive price. For the end user
this guarantees considerable cost
savings over other forms of hot water
generation. The relatively compact
footprint of all Rinnai units and systems
means it can optimise plant room
space and safeguard accessibility for
maintenance and servicing.
There is huge potential for on-demand
style water heaters such as the Rinnai
HDC 1200i units to play their part
in new build and in refurbishments
projects alike, where in the latter
there are still many old systems that
need replacing. By replacing this older
technology with new condensing
appliances will help support the UK
drive towards greener industry.
The Rinnai Infinity HDC 1200i water
heater uses heat exchanger technology
to allow the largest capacity flow rates,
thereby guaranteeing all the hot water
needed, when it is needed. As well as
increasing capacity, the Rinnai Infinity
water heater has lower greenhouse
emissions because of the new reduced
NOx burner technology and as there
is no storage, this scores well with
BREEAM.
The only time the site uses energy to
heat water is when there is a demand, in
other words, it is only burning gas when
a tap is being run.
For more details on RINNAI products
visit www.rinnaiuk.com