14
Glossary
Greenstar FS CDi
ErP
– 6720919078 (2015/12)
Room thermostats
Reducing the setting of the room thermostat by 1°C can reduce
fuel consumption by up to 10%.
New control systems
Upgrade your heating control system, if necessary, with the
latest equipment available.
Roof insulation
Around 30% of the heat loss from a property is through the
roof. Replace any old insulation with new insulation, preferably
of around 200mm thickness or more.
Window frames
Single glazed windows, particularly those with steel frames,
can lose a great deal of heat. Consideration should be given to
replacement with PVCu or wooden framed double glazed units.
Radiators
If a radiator is sited underneath a window, its performance will
be affected if the curtains are allowed to drape over the
radiator. Shelves fitted above or in front of the radiator should
also be avoided.
It is advisable to manually adjust all thermostatic radiator
valves every 2 - 3 months to prevent them sticking. Ensure
radiator valves are correctly set and not damaged.
Draughts
Try to ensure that draughts around doors, windows, letter
boxes and keyholes etc. are reduced by using a suitable
draught excluder.
Curtains
Lined curtains, or heavier full length curtains can provide
excellent insulation. However, always ensure that the curtains
do not drape over radiators.
10
Glossary
Central heating systems
All radiators must be heated at an even rate. If the top of a
radiator is at a lower temperature than the bottom then it
should be bled by releasing air through the bleed screw at the
top of the radiator.
Ask your installer to show you how this is done.
If this boiler is fitted to a sealed system and water leaks are
found or if excessive bleeding is required, then a service
engineer must be contacted to inspect the installation and
rectify any fault.
Only additives that are compatible with aluminium may be used
in the system. Any incompatible additive used will invalidate
the guarantee.
Pluming and condensate drain
This is a condensing boiler and the flue terminal will, at times,
give out a plume of water vapour. This is quite normal.
The boiler produces condensate which is discharged regularly
from within the boiler via a plastic pipe to a drain point. This
pipe must not be blocked or altered in any way.
Room thermostat / programmer
A room thermostat / programmer must be fitted to control the
central heating. This controls the times/temperatures of the
central heating, preventing the boiler from firing unnecessarily.
Refer to the instructions supplied with the thermostat and
programmer for further information.
Thermostatic radiator valves
Thermostatic radiator valves must be fitted in sleeping
accommodation. It is recommended that this type of valve is
fitted to all but one of the radiators. The remaining radiator,
where the room thermostat is located, must be uncontrolled
and left open.
Pump over run function
After the boiler has finished a demand for central heating or hot
water, the pump may continue to run for a short while to
dissipate the heat from within the boiler.
Pump anti-seizure
If there has been no heating demand for 24 hours, the boiler
will run the system pump for a few seconds to reduce the
possibility of pump seizure during long periods of inactivity.
SEDBUK
Seasonal Efficiency of Domestic Boilers in the UK.
WARNING:
Air vents
▶ Do not block or seal any air vents that are
installed to ensure that the central heating
boiler operates safely.
