Trane Tracer VV550 User Manual

CNT-SVX17G-EN 53
Sequence of Operations
Reported space CO
2
Space CO
2
concentration: Not used for control, but passed to
the system for monitoring.
Mandatory Do not care
Reported ventilation
st
atus
Ventilation ratio Required ratio of OA to
primary air to meet zone
ventilation needs
Mandatory Mandatory
Effective ventilation setpoint Arbitrated final value of the
zo
ne ventilation requirement
Active minimum flow setpoint
Minimum flow setpoint source
Configured space CO
2
high limit
CO
2
high limit: CO
2
concentration in the space at which
modulation of the ventilation setpoint ends.
Mandatory Do not care
Configured space CO
2
low limit
CO
2
low limit: CO
2
concentration in the space at which
modulation of the ventilation setpoint begins.
Mandatory Do not care
Configured ventilation
se
tpoint
Occupied ventilation setpoint: Maximum OA required to
ventilate the zone during occupied periods and the high OA limit
for CO
2
DCV control. Default is zero, which disables ventilation.
Mandatory Mandatory
Configured standby
v
entilation setpoint
Standby ventilation setpoint: OA required to ventilate the zone
during periods of occupied standby and the low OA limit for CO
2
DCV control. Default is zero, which disables ventilation.
Mandatory Mandatory
Table 35.Data required for each method of ventilation control (continued)
Variable
Method
Description
CO
2
-based
DCV
setpoint
Prescribed
ASHRAE
rate

Trane Tracer VV550 Specifications

General

Brand	Trane
Model	Tracer VV550
Category	Controller
Language	English