Specifications

11
Instruction 24-9460 • Fyrite
®
InSIght • MyBacharach.com
Performing Tests
Performing a Combustion Test Using the Fyrite
®
INSIGHT
O
2
, CO air
free and stack
temperature
draft
Atmospheric furnace
After the analyzer is powered up and the appropriate
fuel selected, insert the probe in the proper sample
location for the equipment being tested. Contact
the manufacturer of specific equipment or consult
the manufacturers’ literature to determine the
proper sample locations for combustion/carbon
monoxide, stack temperature and draft tests. The
following are recognized as generally accepted
locations for testing heating equipment, consult
with the manufacturer of specific equipment to
make certain.
The measurement for gases and temperature
should be taken at the same point. Typically, this
is done by selecting a sample location ‘upstream’
from the draft diverter/hood, barometric control
or any other opening, which allows room air
to enter and dilute flue gases in the stack. In
larger installations it may also be necessary to
extract a number of samples from inside the
flue to determine the area of greatest flue gas
concentration. Another common practice is to
take the flue gas sample from the ‘Hot Spot’ or the
area with the highest temperature.