Modulating reheat, Advanced options, Resources – KMC Controls BAC-8007 Installation Guide User Manual
Page 52: Page at, Illustration 6–3 modulating reheat, 24 vac class 2
Modulating reheat
This application is for a BAC-8005 or BAC-8205 controller. The modulating
option for reheat can control either an electric reheat unit with an analog
input or a modulating hot water valve. The analog reheat output at output
terminal AO3 varies between 0 and 10 volts DC.
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 6–3 Modulating 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
0-10 VDC
Duct
Temp
Sensor
Analog
Heat
24VAC
Fan start
24 VAC
Class 2
Section 6: Application drawings
SimplyVAV
52
Revision E