THERMOROSSI BOSKY 25, Installation, User & Service Manual

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5.4 GRATE POSITIONS IN THE 25, F25, 30 & F30
During the winter period the grate must remain in the lowest position in order to
guarantee the maximum heat exchange from the combustion to the boiler and
consequently to the water. There are 3 grate positions:
Lowered grate and only central heating
All the heat is transferred to the water to take full advantage of the wet surfaces.
Grate all the way up with flap (para. 5.5) on oven
All the heat is transferred to the cook top, the flame envelopes the oven completely.
Intermediate grate and flap positions
Combined by simply positioning the grate and flap in intermediate positions.
To lift the grate pull the grate handle down gently (O). When the grate is in the desired position
return the lever to its home position. The grate will be lifted to one of its 3 positions. If the
movement is hard, pull the handle back and forth several times in order to free the grate, before
taking it to the top position. It is easier to perform this operation when there is little material in the
firebox.
To lower the grate pull the handle (O) until the grate lifts slightly, lift the grate adjustment lever
release mechanism (N) and shift the handle (O) until the grate is lowered.
5.5
Grate position Country, Country F
Open the ash pan door (L) use the tool to rotate the nut (N) anti clockwise to raise and clockwise to
lower the grate.
The diagrams below shows the path of the heat showing the three grate positions and the how the
maximum amount of heat is transferred to the water in the boiler or the oven.