hergom CRETA Instructions D'installation, De Service Et De Maintenance page 29

h) The cowls must not impede the draft.
Incorrect
i) Clean the chimney at least once a year.
j) If simple, metal pipes are used the joins must be sealed with heat resistant
putty.
l) Metal, exterior chimneys must be made out of double, heat resistant
pipes, which have been specially constructed for solid fuel.
Ill.- LIGHTING UP AND POWER CONTROL
A.- The first time you light your fire.
Once your fireplace has been installed the seals of all the joins must be
tested to prevent any air from entering from outside which could impede the draft.
The first time a fire is lit it should be allowed to burn slowly for three or four
hours to make the different pieces airtight and to prevent any possible damage.
Industrias Hergóm S.A. recommends that the packaging (wood and
cardboard) is used for fuel for the first few times that a fire is lit.
This way the earth's resources are reused and the least amount of solid residue is
created.
Fig.-9
Correct
Fig.-10
Fig.-11
29
At least the same
as the diameter