Sequence of operation
40
VVT Zone Controller
The VVT Zone Controller 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 VVT Zone Controller supports the following temperature sensors:
Sensors
Notes
Space temperature sensors:
•
SPT Standard, Plus, or Pro
You can average up to 5 SPT communicating sensors.
•
T55
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.
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 ) for details.
See the
Carrier Sensors Installation Guide
for details on these sensors.
Sequence of operation
Содержание OPN-VVTZC
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Страница 29: ...VVT Zone Controller 25 Fan box 2 position hot water Fan box modulating hot water ducted or baseboard...
Страница 30: ...Installation 26 VVT Zone Controller Fan box combination baseboard and ducted heat Fan box 2 stage electric heat...
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