© EUROHEAT DISTRIBUTORS (H.B.S) LTD. June 2010
E & OE Instructions Part number IN1208 Edition B
12
Minimum Air Setting
The minimum air screw should be adjusted to supply the maximum air setting, by screwing it in a clockwise
direction until the shutter is fully open when resistance to further turning will be felt, before the stove is lit for
the first time. The facia plate will have to be removed to access the adjustment screw.
If this stove is intalled in a smoke exempt area the minimum setting air bleed flap must be
permanently set to a minimum opening of 14.5mm, which is the flat open to maximum.
This facility of having an adjustable minimum air setting provides a positive repeatable air setting that will give
the lowest burning rate at which the stove will continue burning when the firing rate control is turned to its
minimum position. It will also give a small feed to the air wash when the stove is burning coal, not enough to
risk damage to the grate, but enough to help keep the glass clean. It is also an important safety feature. If the
stove has been burning with a constant air supply it has been generating and burning the volatile gasses from
the fuel. If the air supply is abruptly and completely removed the fire will extinguish but the release of gasses will
continue for some time. These gasses will be above their ignition temperature and may potentially ignite all at
once if they come into contact with air. The constant air bleed that the small flap allows will keep some of these
gasses burning and prevent sudden ignition whilst the generation of gasses reduces.
Adjustment
If it is found that the fire burns for only short periods while set to the “0” position it will be most likely that the
flue draught is high. Commonly found in tall or excessive sized chimneys.
To extend the burning cycle the minimum flap can be adjusted to allow less air to enter at low settings. Adjust
the flap to give your required settings.
The facia plate will have to be removed to access the adjustment screw. Any adjustment should be only undertaken
by the commissioning engineer or under direction from the Euroheat Technical Department.
Turn the adjustment screw
clockwise to increase
and
anti-clockwise to decrease
the minimum air setting.
Important
Never operate the stove with the minimum air setting set to its closed position. If the stove
will be burning wood in a smoke control area the minimum air setting shutter must remain
fully open at all times.
Minimum Air Adjustment Screw
