Fieldpiece CAT45, Operator'S Manual

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Atmospheric
(Natural Draft)
Water Heater
High Efficiency
(Condensing) Furnace
Power Burner
(Induced Draft)
Furnace
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Power Burner
(Induced Draft)
Tankless Water Heater
Flue Gas Direction
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Sample Point
Atmospheric
(Natural Draft) Furnace
11 10
Common Sampling Points
The many types of combustion equipment vary
in their design and therefore their ideal sampling
points However, there are commonalities that
make for useful guidelines when analyzing
performance
Heed equipment manufacturer instructions
above anything mentioned in this manual.
• Before inserting the probe in the flue, it’s good
practice to test for excessive soot which may
lead to carbon buildup within the analyzer or
overexpose sensors.
• Use the probe cone lock to hold the
probe tightly in place at the sampling
point.
• The center of the flue is often a
good place to locate the sensing
point of the probe, but locating
at the highest point of CO is best.