Sig Marine Sig100, Operating And Installation Instruction Manual

Page: 8 / 35

8
Install the barometric tee pipe with the front flap facing fore and aft. In order
for the barometric to work efficiently it must be installed between 12” and
24” from the top of the heater. If using a flue guard, turn the barometric tee
to the back as it does not have to be seen to work
To adjust the flap on the barometric, back off the jam nut and turn the
counterweight so the flap is standing closed. Once the heater has been
burning for some time and the room temperature is starting to rise, it is a
good time to do the adjustment. Adjust the counterweight so the flap starts to
open (aprox 6mm or ¼”). This will allow air to enter the barometric tee and
reduce the air entering the burner. This will help the flame to burn above the
top burner ring. If the flame is still burning below the ring, adjust the flap
open another 3mm or 1/8”. At this time, if there is flames burning below the
top burner ring and the barometric flap is open aprox 9mm or 3/8”, do not
adjust the flap open any further and increase the valve setting until the flame
is burning above the top ring.