Trane ACONT900AC43UA Service Manual page 153

Communicating Gas Furnaces
Section D
80% Furnace Manifold Gas Pressure Measurement & Adjustment ................................................... 2
Adjusting Manifold Outlet Pressure ................................................................................................ 2
Modulating Furnace Manifold Gas Pressure Measurement & Adjustment ...................................... 4
Setting Manifold Pressure Using Contingency Mode ...................................................................... 4
Setting Manifold Pressure Using Installer Test Mode ...................................................................... 8
Three Stage Furnace Gas Pressure Measurement & Adjustment .................................................... 12
Setting Manifold Pressure Using Contingency Mode Option 1 ....................................................... 11
Setting Manifold Pressure Using Contingency Mode Option 2 ....................................................... 14
Setting Manifold Pressure Using Installer Test Mode ..................................................................... 19
Modulating & Three Stage Gas Valve Solenoid Check ................................................................... 23
Introduction ...................................................................................................................................23
Pre-check ..................................................................................................................................... 23
Solenoid check .............................................................................................................................23
Gas Valves
GF - D 1