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Wiring inputs and outputs
TruVu™ VVTZC
-E2
©2022 Carrier.
Installation and Start-up Guide
All rights reserved.
58
Sequence of operation
The TV-VVTZC-E2 supports 3 types of pressure-dependent terminal configurations:
•
Single duct
•
Series fan-powered
•
Parallel fan-powered
The controller can operate as part of a linked VVT system or as a stand-alone controller.
Temperature sensors
The TV-VVTZC-E2 supports the following temperature sensors:
Sensors
Notes
Space temperature sensors:
•
Wireless Standard or Plus
1
You can average up to 5 wireless sensors.
•
ZS Standard, Plus, Pro
2
You can average up to 5 ZS sensors - a combination of temperature,
humidity, and/or CO
2
sensors.
•
T55
3
Push the sensor's override button from 2 to 10 seconds to initiate a
timed override.
If a network space temperature value is used, that value must be
written to the BACnet space temperature point (system_spt) at 1 to 5
minute intervals or on a COV of 0.1 °F (.06 °C) .
To reference another zone as your space temperature input, read the
BACnet point zone_temp by using the network point
System Space
Temperature
.
Duct temperature sensors:
•
Duct Air Temperature (DAT)
10K Type II.
If the zone does not have ducted reheat, install a DAT sensor on the
inlet of the damper.
•
Supply Air Temperature (SAT)
If the zone has ducted reheat, install an SAT sensor downstream of the
reheat source. The SAT is used in controlling the reheat.
The DAT/SAT determines the air source mode if Linkage
communication fails or if the controller is stand-alone. See
Air Source
Mode Determination
(page 65) for details.
1
To configure the control program for the desired user interaction with the sensor, see the
Wireless Sensors
Application Guide
. For detailed instructions, see the
Wireless Sensors Installation Guide
.
2
For basic user instructions, see the
ZS Sensor User Guide
. For detailed installation instructions, see the
ZS
Sensors Installation Guide
.
3
See the
Carrier Sensors Installation Guide
for details on T55 sensors.