Trane Symbio 700 - Heat Pump - CVZT & VVZT; Condenser Fan Operation; Thermostat, CVZT, & VVZT

ACC-APG001A-EN
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Table 14. Dual unloading compressor cooling staging
Unit Operation Unit Response
Cooling Stage 1 Compressor 1 Output ON + Compressor 2
Output ON
Cooling Stage 2
Compressor 1 Output ON +Compressor 1
Unloader Solenoid ON + Compressor 2 Output
ON +Compressor 2 Unloader Solenoid ON
Heat Pump – CVZT & VVZT
Table 15. Single compressor cooling staging
Unit Operation Unit Response
Cooling Stage 1 Compressor 1 Output ON
Table 16. Dual compressor cooling staging (manifold or independent)
Unit Operation Unit Response
Cooling Stage 1 Comrpessor 1 Output ON
Cooling Stage 2 Compressor 1 Output ON + Compressor 2
Output ON
Condenser Fan Operation
Thermostat, CVZT, & VVZT
Table 17. Single condenser fan systems (cooling only and heat pump)
Unit Operation Unit Response
Compressor 1 Output ON Condenser Fan Output 1 ON
Compressor 2 Output ON Condenser Fan Output 1 ON
Compressor 1 Output ON +
Compressor 2 Output ON
Condenser Fan Output 1 ON
NNoottee:: If Defrost is active on Heat Pump units, then Condenser Fan Output 1 OFF.
Table 18. Dual condenser fan - shared airstream (cooling only)
Unit Operation Unit Response
Compressor 1 Output ON Condenser Fan Output 1 ON +Condenser Fan
Output 2 ON
Compressor 2 Output ON Condenser Fan Output 1 ON +Condenser Fan
Output 2 ON
Compressor 1 Output ON +
Compressor 2 Output ON
Condenser Fan Output 1 ON +Condenser Fan
Output 2 ON
Table 19. Dual condenser fan - independent airstream (cooling only and heat pump)
Unit Operation Unit Response
Compressor 1 Output ON Condenser Fan Output 1 ON
Compressor 2 Output ON Condenser Fan Output 2 ON
Compressor 1 Output ON +
Compressor 2 Output ON
Condenser Fan Output 1 ON +Condenser Fan
Output 2 ON
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