Modulating reheat
The modulating reheat 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.
l
The fan start circuit is a 24 volt AC pilot duty output.
l
The fan speed output is 0-10 volts DC.
Submittal sheets for several variations of this application are available from the
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
KMC Controls, Inc.
44
Revision H
Summary of Contents for SimplyVAV BAC-8001
Page 1: ...SimplyVAV Application and Installation Guide Revision H ...
Page 12: ...Section 1 About the controllers KMC Controls Inc 12 Revision H ...
Page 48: ...Section 6 Application drawings KMC Controls Inc 48 Revision H ...
Page 62: ...Section 7 Sequences of operation KMC Controls Inc 62 Revision H ...
Page 72: ...Appendix A K factors KMC Controls Inc 72 Revision H ...