Installation
FUME SENSOR (GAS MODELS ONLY)
The FUME SENSOR is a manual reset heat/pressure sensor. It will shut down the gas burner. This occurs when there is a chimney down draft, plugged chimney, plugged smoke pipe, or a plugged secondary heat exchanger.
If the gas burner shuts down because of any of the above conditions, before the burner can restart, you must press the red button down to manually reset it.
Wire per schematic shown in Exploded View section in back of manual.
Complete the following steps to install the Fume Sensor onto the furnace:
1.Screw fume sensor into threaded hole located in secondary air intake cover. See Fig. 20.
2.Align sensor so the air slot on back of sensor cover is in the vertical position. Then tighten clamping nut.
Field Controls® Model WMO-1 Safety Switch
FIG. 20
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