Heat Setup - ABB FBVi-2U4-4T User Manual

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HEAT SETUP

The
FBVI-2U4-4T
has 3 Digital Outputs (DO) to control heat stages, one dedicated digital output for a
digital fan command, and 2 Analog Outputs (AO) to control modulating heat or fans. A tri-state heating
valve may be configured using
The
heatConfig (A4)
perimeter heat available. Using the CXProHD BACnet commissioning, the configuration number will be
automatically calculated. If changing the values in the field, select each option, and add the numbers for
the final number to enter into the
Options to select are:
0 = No Heat (default)
1 = One stage of Heat
Unit has one stage of heat.
o
2 = Two stages of Heat
Unit has two stages of heat.
o
4 = Three stages of Heat
Unit has three stages of heat.
o
16 = Is Duct heat or perimeter heat the priority
If Duct heat is the priority, the stages of duct heat will be enabled before the stages of
o
Perimeter heat
If Perimeter heat is the priority, the stages of perimeter heat will be enabled before the
o
stages of Duct heat.
32 = Operate both Duct heat and perimeter heat simultaneously
When both duct and perimeter heat are available, this will enable both the first stages of
o
heat for both duct and perimeter heat at the same time.
64 = Use Dual Max Control
When the unit has a discharge air temperature sensor configured, this will enable the dual
o
max heating sequence to be used for duct heating. See the control sequences section for
dual max heating control details.
If Perimeter Heat is available, set the number of stages of Perimeter heat using the
stagesOfPerimeterHeat (A75)
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Subject to change without notice
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and
.
DO-10
DO-11
analog setpoint will determine the stages of heat, heating priority, and if there is
heatConfig (A4)
analog setpoint.
FBVi-2U4-4T |
analog setpoint.
Installation
47

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