Operator`s manual

Operator's Manual: Model CB-1400
8-4
Figure 8C - Proper Draft vs. Backdraft
I88836
To arrive at proper
draft measurements
be sure that all fans
within the building
are running while
adjusting the draft
to final levels!
BACKDRAFT
EXHUST FAN CREATES BACKDRAFT IN STACK
AND SUCKS COMBUSTION GASES DOWN THE
STACK AND BACK INTO THE FURNACE
OIL SPRAY AND HEAT IS FORCED
BACK AGAINST THE BURNER AND
RESULTS IN OIL FOULED ELECTRODES
AND RETENTION HEAD.
SEVERE BACKDRAFT WILL HEAT AND
DAMAGE THE CAD CELL AND THE
TRANSFORMER.
RISING HOT
COMBUSTION
GASES PRODUCE
PROPER DRAFT
PROPER DRAFT