Staged reheat, Advanced options, Resources – KMC Controls BAC-8007 Installation Guide User Manual
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Staged reheat
This application is for BAC-8005 or BAC-8205 controllers. The controllers are
configured to switch reheat units that are controlled with 24 volts AC. Reheat
units with up to three stages of reheat can be controlled by these controllers.
For one-stage or electric reheat or hot water reheat with an on/off valve,
use only output terminal BO6.
For two-stage reheat use output terminals BO6 and BO7.
For three-stage reheat use output terminals BO6, BO7, and BO8.
For cooling and heating, a duct temperature sensor is required for Discharge
Air Temperature limiting and automatic changeover. See the topic
for instructions to enable Discharge Air Temperature
limiting.
When connecting the controller to a fan powered VAV unit, the fan circuits
must be compatible with the following specifications.
The fan start circuit is a 24 volt AC pilot duty output.
The fan speed output is 0-10 volts DC.
Submittal sheets for several variations of this application are available from
the
Resources
page at
.
Illustration 6–2 BAC-8005 and BAC-8205 with three-stage reheat
ON CTS
1 2
COMM
READY
AI1
AI5
GND
AO4
AO3
SC
BO8
BO5
BO6
SC
BO7
24VAC
AI6
GND
AI7
T
-S
T
A
T
/
SEN
SO
R
-A
+B
S
EO
L
BACnet MS/TP
Fan
Speed
Duct
Temp
Sensor
Stage 1
Stage 2
Stage 3
24VAC
Fan start
Reheat
24 VAC
SimplyVAV
Section 6: Application drawings
Revision E
51