Carrier VVT 33ZCVVTZC-01 Installation, Start-Up And Configuration Instructions page 56

3v control system. zone controller pressure dependent control
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DMPPOS = 70%
Fan off if configured for Fan
Box Terminal Type
DMPPOS = 0%
Fan off if configured for
Series or Parallel Fan
Terminal Type
DMPPOS = Cool Max
Damper Position
Fan on if configured for
Series Fan Terminal Type
NO
Is SPT valid?
YES
DMPPOS= Heat
NO
Is local mode =
Min Damper
HEAT?
Position
YES
Run Temperature
Control PID Logic
DMPPOS = TC_DPOS
3V™ Zone Damper Operation
Enter
YES
Is system mode =
OFF?
NO
YES
Is system mode =
EVAC?
NO
YES
Is system mode =
PRES?
NO
Turn on fan if configured for
Series Fan Terminal Type
YES
Is system mode =
FREECOOL or COOL?
NO
System mode =
HEAT
YES
YES
DMPPOS= Cool Min
Damper Position or Vent
Poisition which ever is
greater
Exit
56
LEGEND
DMPPOS — Damper Position
EVAC
— Evacuation
HSMR
— Heat Submaster Reference
PID
— Proportional/Integral/Derivative
PRES
— Pressurization
SAT
— Supply Air Temperature
SPT
— Space Temperature
TC_DPOS — Temperature Control Damper Output
VENT
— Ventilation
NO
Is SPT valid?
YES
YES
Is local mode =
Zone configured
HEAT?
for reheat?
NO
YES
Is local mode =
COOL?
DMPPOS= Cool Min
NO
Damper Position or
Reheat Damper Position
(if configure for Single
Duct Terminal Type)
Local mode = VENT
which ever is greater
Turn on fan if
configured for Parallel
Is SAT between
Fan Terminal Type
65 and 75 ?
NO
Run PID loop to stage or
modulate reheat to
control SAT= HSMR
DMPPOS = Cool
Min Damper
Position
NO
DMPPOS= Cool
Min Damper
Position

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