Thermostat Linkage; Airside Linkage - Carrier Fan Coil Integration Manual

Sequence of Operation

Thermostat Linkage

The Fan Coil uses one wall-mounted SPT-type sensor to control multiple units using Thermostat Linkage. A single
unit is selected as a master and configured for the total number of linked units (including the master). The slave
units must be sequentially addressed, below the master's address.
The master sends the setpoints, occupancy status, space temperature, and optional sensor value from the master
to the slave units. Each slave then sends its operating mode and supply air temperature. If a local sensor for
either RH or CO
2
Linkage, is used.
Each slave sends its operating mode and supply air temperature. When using Thermostat Linkage, the units do
not need to be the same type or have the same coils. Each unit may be independently configured for coil types,
fan operation, etc. Thermostat Linkage is designed to support a maximum of 8 units operating together, using a
single SPT sensor.

Airside Linkage

The Fan Coil receives information through Airside Linkage and operates as an air source for a sub-zoned system
using VVT terminals. The fan coil becomes the equipment master and receives its setpoints, occupancy, and
space temperature from the zoning system. If the optional CO
coil also receives this data through Linkage.
NOTE Do not connect a RH or CO
overridden by Linkage.
The fan coil uses this information to provide the air required to satisfy the load in the zones. The operating mode
and supply air temperature of the fan coil is sent to all the zones in the system. Airside Linkage has the highest
priority and overrides both local control and Thermostat Linkage.
Fan Coil
Integration Guide
is provided, the value at the slave fan coil, rather than the value received through Thermostat
sensor to the fan coil unit if you use Airside Linkage. The local value is
2
or RH sensors is connected to any zone, the fan
2
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