Carrier VVT Zone Installation And Startup Manual page 58

Appendix A: VVT Zone Controller Points/Properties
Occupied Setpoints
The occupied setpoints described below are the setpoints under normal operating conditions. The Demand Level 1–3
setpoints apply if demand limiting is used.
Demand limiting is a cost-saving strategy to reduce energy consumption. The strategy expands the occupied heating and
cooling setpoints when the system reaches one of 3 levels of consumption. With the expanded setpoints, the equipment
works less, thereby saving energy. By default, Demand Level 1 expands the occupied heating and cooling setpoints by 1°F,
Demand Level 2 by 2°F, and Demand Level 3 by 4°F. If the occupied heating or cooling setpoints change, the (effective)
demand level setpoints automatically change by the same amount. See Sequence of Operation
information.
Point Name/Description
Occupied Heating – Green
The heating setpoint the controller maintains while in occupied mode.
Occupied Cooling – Green
The cooling setpoint the controller maintains while in occupied mode.
Occupied Heating 1 – Light Blue
The space temperature must be less than this value for the VVT Master to
consider the zone a heating caller. The zone remains a heating caller until the
space temperature rises above the Occupied Heating setpoint. We recommend
that this value be set no lower than .5°F below the Occupied Heating
Occupied Heating 2 – Dark Blue
The space temperature must be less than this value to generate a low space
temperature alarm.
Occupied Cooling 1 – Yellow
The space temperature must be greater than this value for the VVT Master to
consider the zone a cooling caller. The zone remains a cooling caller until the
space temperature drops below the Occupied Cooling setpoint. We recommend
that this value be set no lower than .5°F above the Occupied Cooling
Occupied Cooling 2 – Orange
The space temperature must be greater than this value before a high space
temperature alarm is generated.
Unoccupied Setpoints
Point Name/Description
Unoccupied Heating – Gray
The heating setpoint the controller maintains while in unoccupied mode.
Unoccupied Cooling – Gray
The cooling setpoint the controller maintains while in unoccupied mode.
54
(page
Default
Range: 40 to 99°F
Occupied
70°F
74°F
69°F
setpoint.
67°F
75°F
setpoint.
77°F
Range
D: 55°F
R: 40 to 90°F
D: 90°F
R: 55 to 99°F
40 ) for more
Demand Level
1 2 3
69°F 68°F 66°F
75°F 76°F 78°F
68°F 67°F 65°F
66°F 65°F 63°F
76°F 77°F 79°F
78°F 79°F 81°F
VVT Zone Controller