Trane RTAA-100, Installation & Maintenance Manual

Page: 71 / 178

RTAA-SVX01A-EN 71
Operating Principles
psid and 349 psid. The UCM will allow the unit to remain on-line if there is no
increase in pressure for a one hour period. Otherwise, the unit will trip off-line
and display the “High Differential Pressure” diagnostic.
Figure 34 Fan State at Circuit Startup
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