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4.2 Performing a Combustion Test using
the Model 110/120/125
4.2.1 Analyzer Turn On and Warm Up
Important: The probe must be at room temperature before
performing the following steps.
1. Connect the probe and make sure that the analyzer s properly set
up per Secton 3.0.
2. Perform one of the followng:
• Model 110/120 – Before turnng ON the analyzer, ts probe must
be located n the area contanng the burner's combuston-ar sup-
ply. If the burner s usng room ar, smply place the probe wthn
the room. In the case of a hgh-effcency furnace where combus-
ton ar s drawn n from an outsde source, nsert the probe nto
the combuston-ar stream so t can measure ts temperature wth
the burner operatng.
• Model 125 – Ths analyzer has a second thermocouple channel
that can be used to ndependently montor the temperature of the
burner's combuston-ar supply. When usng ths second thermo-
couple channel, nsert the thermocouple nto the burner's combus-
ton-ar stream, and poston the probe to measure the ambent
room temperature. If the second thermocouple channel s not
used, then use the probe's thermocouple to measure the combus-
ton-ar temperature as descrbed above for the Model 110/120.
3. Turn ON the analyzer and allow t to warm-up per Secton 4.1.1.
4.2.2 Selecting a Fuel
1. Wth Fuel Screen dsplayed, use the or button to step through
the fuels codes untl the proper fuel s selected. The analyzer de-
faults to the most recently selected fuel.
F1 = Natural Gas
F2 = Ol #2
F3 = LPG
F4 = Kerosene
2. Press the eNTeR button to select the dsplayed fuel code and enter
the Run Mode.
Instruction 24-9395
Fyrite Pro
19
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