Lennox Allied Air Enterprise A97DSMV Installation Instructions Manual page 53

Warm air gas furnace downflow air discharge direct vent
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Gas Valve
Field Installed
Figure 58. Manifold Pressure Measurement
Negative Port
Positive Port
Red and Black Tubing -
Black Tubing +
Gas Valve
Field Installed
Measuring Device
Figure 59. Operation Signal (Delta P) Measurement
507029-05
Issue 2241
Page 53 of 73

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