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HEATING CONTROL
TERMINAL UNIT HEAT
The
CBV-2U4-3T(-N)
to control modulating heat or fans. A tri-state heating valve may be configured using
On/Off Control
The
CBV-2U4-3T(-N)
the controller heating setpoint, the
lowest output number to highest.
When using stages of Electric Heat without a fan, parameters are available to disable electric heat until
airflow reaches a Flowrate setpoint
ElecHeatCFMTestStpt
enabled.
•
ElecHeatCFMTestStpt
•
ElecHeatCFMTestTime
•
AirflowOKforElecHeat
Modulating Control
The
CBV-2U4-3T(-N)
heating setpoint, the
ranges and direct or reverse action are available.
If the
CBV-2U4-3T(-N)
Note:
has been commanded on.
BASEBOARD HEAT
The
CBV-2U4-3T(-N)
Like terminal unit heat, these may be either analog or digital outputs, depending on what type of point is
available.
In the occupied mode, the baseboard heat will be controlled in sequence with any terminal unit heat.
In the unoccupied mode, the baseboard heat may be configured to operate either in sequence with terminal
unit heat or as the only source of heat.
On/Off Control
If DO point(s) are available, the
temperature below the controller heating setpoint, the
associated baseboard heat.
Modulating Control
If AO or tri-state point(s) are available, the
in zone temperature below the controller heating setpoint, the
associated baseboard section hot water valve.
Run Only Baseboard heat during unoccupied
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CBV-2U4-3T(-N) |
has 3 Digital Outputs (DO) to control both fan or heat stages and 2 Analog Outputs (AO)
may control on/off stages of electric terminal heat. On a fall in zone temperature below
CBV-2U4-3T(-N)
ElecHeatCFMTestStpt
(A3) for the amount of time set in
(A3) R/W
(A112)
(D20) RO
may control modulating terminal heat. On a fall in zone temperature below the controller
CBV-2U4-3T(-N)
controller will modulate the hot water valve open. Various voltage
has been configured for a series or parallel fan, heat will not be energized until the fan
control outputs not being used for terminal unit heat may be used for baseboard heat.
CBV-2U4-3T(-N)
CBV-2U4-3T(-N)
Control Sequence Overview
controller will energize the heat stages in sequence from
(A3). Flowrate must stay above
ElecHeatCFMTestTime
may control on/off baseboard heat. On a fall in zone
CBV-2U4-3T(-N)
may control modulating baseboard heat. On a fall
CBV-2U4-3T(-N)
and
.
DO-11
DO-12
(A112) before heat will be
controller will energize the
controller will modulate the
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