Carrier VAV Zone II Installation And Startup Manual page 78

Appendix A: VAV Zone II 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 ( .5°C), Demand Level 2 by 2 °F (1.1 °C), and Demand Level 3 by 4 °F (2.2 °C). If the occupied heating or
cooling setpoints change, the (effective) demand level setpoints automatically change by the same amount. See
Sequence of Operation (page 48) for more 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 the Occupied Heating
1 setpoint for the VVT Master to consider the zone a heating
caller in a linked system. In a single-zone application, the heating
requirement begins as soon as the space temperature falls
below the Occupied Heating setpoint. We recommend that the
Occupied Heating 1 value be set no less than 0.5 °F (.27 °C)
below the Occupied Heating setpoint.
Occupied Heating 2 – Dark Blue
The space temperature must be less than the Occupied Heating
2 setpoint to generate a low space temperature alarm. We
recommend that this value be set no less than 0.5 °F (.27 °C)
below the Occupied Heating 1 setpoint.
Occupied Cooling 1 – Yellow
The space temperature must be greater than the Occupied
Cooling 1 setpoint for the VVT Master to consider the zone a
cooling caller in a linked system. In a single-zone application, the
cooling requirement begins as soon as the space temperature
exceeds the Occupied Cooling setpoint. We recommend that the
Occupied Cooling 1 value be set no less than 0.5 °F (.27 °C)
above the Occupied Cooling setpoint.
Occupied Cooling 2 – Orange
The space temperature must be greater than the Occupied
Cooling 2 setpoint to generate a high space temperature alarm.
We recommend that this value be set no less than 0.5 °F
(.27 °C) above the Occupied Cooling 1 setpoint.
VAV Zone II Controllers
Installation and Start-up Guide
Default
Range: -40 to 245°F (-40 to 118.3°C)
Occupied
D: 70°F
(21.1°C)
R: 40 to 90°F
(4.4 to
32.2°C)
D: 76°F
(24.4°C)
R: 55 to 99°F
(12.7 to
37.2°C)
69°F
(20.5°C)
67°F (19.4°C)
77°F
(25°C)
79°F
(26.1°C)
74
Demand Level
1 2 3
69°F 68°F 66°F
(20.5°C) (20°C) (18.9°C)
77°F 78°F 80°F
(25°C) (25.5°C) (26.6°C)
68°F 67°F 65°F
(20°C) (19.4°C) (18.3°C)
66°F 65°F 63°F
(18.9°C) (18.3°C) (17.2°C)
78°F 79°F 81°F
(25.5°C) (26.1°C) (27.2°C)
80°F 81°F 83°F
(26.6°C) (27.2°C) (28.3°C)
CARRIER CORPORATION ©2019
All rights reserved