Trane Tracer ZN.520 Manual page 80

Table 42 Determining the main coil temperature for main coil changeover applications
Local entering water temperature
present
No
No
Yes
Yes
78
Configuration
Communicated entering water
temperature present
No
Yes
No
Yes
Result
• Unit is only permitted to only deliver heat.
• Water assumed hot.
• Control algorithm cooling capacity
remains at 0%.
• The controller always uses the
communicated water temperature to
determine whether the unit can heat or
cool as required.
• Entering water temperature sampling not
allowed.
• The controller always uses the local
hardwired entering water temperature to
determine whether the unit can heat or
cool as required.
• Entering water temperature sampling (if
enabled) is invoked as required.
• The controller always uses the
communicated water temperature instead
of the local value, to determine whether the
unit can heat or cool as required.
• Entering water temperature sampling not
allowed.
CNT-SVX04A-EN