Trane Tracer ZN.520 Installation Owner Diagnostics page 69

Table 39: Unit operation based on the effective heat/cool output
Application mode input
(nviApplicMode)
Cool
Pre-cool
Off
Test
Fan only
1. Use of heat for supply air tempering and dehumidification remains available.
2. Night purge, Emergency heat, and Nul modes are not supported by the Tracer™ ZN.520 Unit Controller. If one of these modes is
received by the controller, it is interpreted as Auto.
UV-SVP01A-EN
Appendix—Unit Operation
cont.
Heat/cool mode input
(nviHeatCool)
Any state Cool
Any state Pre-cool
Any state Off
Any state Determined by controller
Any state Fan only
Effective heat/ cool
mode output
(nvoHeatCool)
Fan—Enabled
Heating—Disabled
Cooling—Enabled
Damper
Fan—Enabled
Heating—Disabled
Cooling—Enabled
Damper—Disabled
Fan—Disabled
Heating—Disabled
Cooling—Disabled
Damper—Disabled
Fan—Enabled
Heating—Enabled
Cooling—Enabled
Damper—Enabled
Fan—Enabled
Heating—Disabled
Cooling—Disabled
Damper—Enabled
Unit Operation
1
1
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