P
24. The first step when checking total external static pressure
would be to _________________________.
A. Install inclined manometer, magnehelic, or digital manometer.
B. Turn the furnace on to “fan on.”
C. Inspect/ replace filter in the furnace.
D. Turn the furnace to the highest heat setting.
25. The positive static pressure should be measured at outlet of
the furnace after the evaporator coil.
A. True
B. False (Measure at outlet of furnace, before the evap coil)
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