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UV-SVP01A-EN 63
Appendix—Unit Operation
cont.
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.
Cool Any state Cool Fan—Enabled
Heating—Disabled
1
Cooling—Enabled
Damper
Pre-cool Any state Pre-cool Fan—Enabled
Heating—Disabled
1
Cooling—Enabled
Damper—Disabled
Off Any state Off Fan—Disabled
Heating—Disabled
Cooling—Disabled
Damper—Disabled
Test Any state Determined by controller Fan—Enabled
Heating—Enabled
Cooling—Enabled
Damper—Enabled
Fan only Any state Fan only Fan—Enabled
Heating—Disabled
Cooling—Disabled
Damper—Enabled
Table 39: Unit operation based on the effective heat/cool output
Application mode input
(nviApplicMode)
Heat/cool mode input
(nviHeatCool)
Effective heat/ cool
mode output
(nvoHeatCool)
Unit Operation