“To fully embrace energy effi ciency, it is
important that installers look beyond the
basics at more advanced technology”
A multi-zone smart connected
thermostat, which is Boiler
Plus compliant
Unlike weather compensation or
FGHR, no extra equipment is necessary,
and installation is relatively straight
forward for experienced engineers.
Load compensation controls vary the
fl ow temperature from the boiler in
relation to the difference between the
measured room temperature and the
room thermostat set point.
This is achieved either by directly
modulating the output of the heater,
which requires some communication
between the boiler and the control, for
example an OpenTherm protocol, or by
controlling the on/off operation of the
heater.
thermostat’ varies
ask, in this context it
via smartphone or
tablet. Rather, there
that the device must
incorporate:
• Automatically
adjust time and
temperature settings
based on either manual entries from
the occupants or occupancy detection
• Start the boiler at the optimum time
to achieve the set-point temperature at
the start of the occupancy period, for
example, optimum start. Implicit in this
is some form of self-learning within the
device.
MORE THAN BOILER PLUS
Research has shown that a number of
homeowners are uncertain about different
technologies and even researching more
homeowners of technologies
that are not required
under Boiler Plus, but add
tremendous comfort and
effi ciency benefi ts for the
homeowner, including time
proportional integral controls
(TPI) and zoning.
TPI controls use a
sophisticated algorithm
to provide close control of
room temperature to ensure
the boiler is fi red just long
enough to achieve the desired
temperature.
What’s more, the calculation
is based on previously ‘learnt’
characteristics of the room in
meaning effi ciencies increase
(up to a certain point) the
longer the thermostat is in
place.
Tests commissioned by
BEAMA, conducted at the
University of Salford’s Energy
House, demonstrated that
installing a TPI thermostat
which the controller is placed,
with a conventional heating
system allows the boiler to stay in
condensing mode for longer.
Using such a thermostat, together
with thermostatic radiator valves, was
shown to provide a potential 53% saving
in heating energy costs – that’s a further
13% reduction compared to a more
conventional room thermostat.
The premium control option is a
smart multi-zoning system that enables
individual rooms or areas to be controlled
using different time and temperature
ENQUIRY NUMBER 121
While the defi nition of ‘smart
depending on who you
does not mean control
www.hpmmag.com | JUNE 2018 | Heating & Plumbing Monthly
59
are two clear functions
A Sundial RF2 wireless enabled programmer and RF2
thermostat, which is Boiler Plus compliant
energy effi cient solutions isn’t a priority for
many consumers.
Therefore, it is invaluable that installers
can not only comply with these new
regulations
and inform
profi les, rather than heating the whole
property at once.
In the past, this required the
installation of additional motorised zone
valves into the heating circuit, plus a
programmer and room thermostat for
each zone. But new technology is now
available that uses wireless controls to
cater for up to 12 heating zones plus hot
water control.
Legislation will play a central
role in the move towards a greener
future. However, to fully embrace
energy effi ciency, it is important
that installers look beyond
the basics at more advanced
technology.
/www.hpmmag.com
