Bosch Worcester Greenstar Si Series User Instructions page 20

TIPS ON ENERGY SAVING
DRAUGHTS
Try to ensure that draughts around doors, windows, letterboxes and keyholes etc. are
reduced by using a suitable draught excluder.
WARNING: AIR VENTS
B Do not block or seal any air vents that are installed to ensure that the central heating
boiler operates safely.
CURTAINS
Lined curtains, or heavier full length curtains can provide excellent insulation. However,
always ensure that the curtains do not drape over radiators.
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