Large open area right away from the fireplace (5)
I believe the answer is:
'large open area' is the definition.
'heath' can be an answer for 'area' (heath is a kind of area). I'm not certain of the 'large open' bit.
'right away from the fireplace' is the wordplay.
'right' becomes 'r' (abbreviation).
'away from' is a deletion indicator.
'the fireplace' becomes 'hearth' ('hearth' can be a synonym of 'fireplace').
'hearth' with 'r' taken away is 'HEATH'.
Can you help me to learn more?
(Other definitions for heath that I've seen before include "Statesman" , "Uncultivated land area" , "Tract of uncultivated land with scrubby vegetation" , "Ted - - (former PM)" , "Sandy, scrubby land" .)