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Appendix B: VVT terminal modes
TruVu™ VVTZC
-E2
©2022 Carrier.
Installation and Start-up Guide
All rights reserved.
130
Air Source
Mode
Temperature
Control
Requirements
Terminal Type
Aux
Heat
Terminal
Mode
Damper Control (Damper
Setpoint used)
Heat
Control
Fan
Control
Off
None
All
N/A
Off
Hold Damper @65% (None)
Disable
Disable
Cooling
All
N/A
Off
Hold Damper @65% (None)
Disable
Disable
Heating
Single Duct
N/A
Off
Hold Damper @65% (None)
Disable
N/A
Series or
Parallel Fan
No
Off
Hold Damper @65% (None)
Disable
Disable
Series Fan
Yes
Heating
Hold Damper @65% (None)
Enable
Enable
Parallel Fan
Yes
Heating
Close Damper (None)
Enable
Enable
Vent
None
Single Duct
N/A
Vent
Vent Damper Position (Vent) Disable
N/A
Series Fan
N/A
Vent
Vent Damper Position (Vent) Disable
Enable
Parallel Fan
N/A
Vent
Vent Damper Position (Vent) Disable
Disable
Cooling
Single Duct
N/A
Cooling
Modulate Damper Position
(Cool)
Disable
N/A
Series Fan
N/A
Cooling
Modulate Damper Position
(Cool)
Disable
Enable
Parallel Fan
N/A
Cooling
Modulate Damper Position
(Cool)
Disable
Disable
Heating
Single Duct,
Parallel Fan
No
Cooling
Minimum Damper Position
(Cool)
Disable
Disable
Series Fan
No
Heating
Minimum Damper Position
(Cool)
Disable
Enable
Single Duct
Yes
Reheat
Minimum Damper Position
Enable
N/A
Series or
Parallel Fan
Yes
Heating
Minimum Damper Position
(Cool)
Enable
Enable
Cool or Freecool None
Single Duct
N/A
Vent
Minimum Damper Position
(Cool)
Disable
N/A
Series Fan
N/A
Vent
Minimum Damper Position
(Cool)
Disable
Enable
Parallel Fan
N/A
Vent
Minimum Damper Position
(Cool)
Disable
Disable
Cooling
Single Duct
N/A
Cooling
Modulate Damper Position
(Cool)
Disable
N/A
Series Fan
N/A
Cooling
Modulate Damper Position
(Cool)
Enable
Enable
Parallel Fan
N/A
Cooling
Modulate Damper Position
(Cool)
Disable
Disable
Heating
Single Duct,
Parallel Fan
No
Heating
Minimum Damper Position
(Cool)
Disable
Disable
Series Fan
No
Heating
Minimum Damper Position
(Cool)
Disable
Enable
Single Duct
Yes
Reheat
Minimum Damper Position
Enable
N/A
Series or
Parallel Fan
Yes
Heating
Minimum Damper Position
(Cool)
Enable
Enable
Appendix B: VVT terminal modes