Operator's Manual

Atmospheric

(Natural Draft)

Water Heater

High Eciency

(Condensing) Furnace

Power Burner

(Induced Draft)

Furnace

Power Burner

(Induced Draft)

Tankless Water Heater

Flue Gas Direction

Sample Point

Atmospheric

(Natural Draft) Furnace

1110

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 ue, 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 ue is often a

good place to locate the sensing

point of the probe, but locating

at the highest point of CO is best.