Time proportional reheat, Advanced options, Resources – KMC Controls BAC-8007 Installation Guide User Manual
Page 53: Page at, Illustration 6–4 time proportional reheat
Time proportional
reheat
This application is for a BAC-8005 or BAC-8205 controller. The time
proportional reheat option is typically used in hydronic systems with a hot
water reheat coil and a wax top control valve.The reheat output is a triac that
can switch up to 1 ampere at 24 volts AC.
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 6–4 Time proportional 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
24VAC
Fan start
24 VAC
24VAC THERMAL
ACTUATOR
SimplyVAV
Section 6: Application drawings
Revision E
53