Refilling a sealed Central Heating system

21 Jan 2004
Reaction score
United Kingdom
HI. I need to drain and refill my Central heating system. The draining is not a problem but have never refilled a sealed system (got a Baxi Combi 80 Eco Boiler) has anyone got any detailed instructions on refilling?
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close the drain tap
make sure the auto air vent is open
open the valve on the fill loop
fill to 1-1.5 ish
vent rads
refill as nec
final press cold should be 1-1.2

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