8
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mechanical thermostat installed, the energy saving benefits
of a replacement high efficiency condensing boiler will not
be realised as the boiler will rarely be running in condensing
mode. Heating and hot water can account for over 80%
of total household energy usage. Chronoproportional (TPI)
thermostats can provide great cost savings. It can be used
on any boiler, with underfloor and radiator systems, zoned
heating and electric heating systems. The use of an electronic
thermostat with chronoproportional capability provides closer
temperature control plus possible reductions of 10% in both
fuel cost and carbon emissions. This thermostat has the
option of standard setting or TPI.
1.4
What is Delayed Start?
Thermostats with the Delayed Start function have been
shown to reduce heating costs by as much as 10%. This
feature delays the start-up of the heating, depending on how
warm the room temperature is at the time when the central
heating is due to come on.
The heating start can be delayed for up to 45 minutes if the
room is already relatively warm, when the weather is milder
for example. This often reduces how long the heating is on
per day, with no comfort loss, saving you energy and money!
The Delayed Start feature can be fully automated and needs
no extra programming.
1.5
What is Optimum Start?
The Optimum Start adjusts the starting time for home
heating according to the temperature measured within the
building. Instead of setting an arbitrary time for the heating
to come on, the homeowner programmes the time that the
home should be at the desired temperature. Up to 10% of
domestic energy costs can be saved, as the warm up time is
automatically reduced according to the ambient temperature.
Many homeowners set their heating to start a couple of
hours before getting up to avoid waking up to a cold house.
With the Optimum Start function you don’t need to do this.
The actual start time is automatically delayed or advanced
to ensure your home reaches the set temperature by the
programmed time.
1.6
What is Optimum Stop?
Optimum Stop saves energy by switching the boiler off a
little earlier than the programmed OFF time. If the house is
up to temperature, you should not notice the effect on the
temperature but you should see a difference in your energy bill.
1.7
What is Landlord Service?
The optional Landlord Service safety feature offers protection
for tenants and landlords against illegal boiler negligence (in
compliance with Gas Safety Regulation 36). 30 days before
the boiler is due to be serviced, the LCD will display
SER
. If the
annual maintenance is not carried out before the 30 days, the
system will only run for a pre-determined number of minutes
per hour before turning off.
