Manual 2100-653A
Page
21 of 44
Thermostat
Predominant Features
8403-067
Carbon Dioxide Sensor with LCD for Sensor Readings
8403-060
(1120-445)
3 stage Cool; 3 stage Heat
Programmable/Non-Programmable Electronic
HP or Conventional
Auto or Manual changeover
8403-081
(VT8650U5500B)
2 stage Cool; 2 stage Heat
Programmable/Non-Programmable Electronic
HP or Conventional, Auto or Manual changeover
with Humidity and Occupancy Sensor, BACnet
CSB9E-THO
3 stage Cool; 3 stage Heat
Programmable/Non-Programmable Electronic
HP or Conventional
Auto or Manual changeover with Humidity Control
BACnet MS/TP or Ethernet Connection
CSB9E-THOC
3 stage Cool; 3 stage Heat
Programmable/Non-Programmable Electronic
HP or Conventional
Auto or Manual changeover with CO
2
and Humidity
Control
BACNet MS/TP or Ethernet Connection
GENERAL
This unit is equipped with a variable speed ECM motor.
The motor is designed to maintain rated airflow up to
the maximum static allowed.
It is important that the
blower motor plugs are not plugged in or unplugged
while the power is on. Failure to remove power prior
to unplugging or plugging in the motor could result in
motor failure.
CAUTION
Do not plug in or unplug blower motor connectors
while the power is on. Failure to do so may result
in motor failure.
FIGURE 16
TABLE 4
Wall Thermostats and Controls
MIS-1285
“F”
terminal of pin 5 of P2 is the
ventilation input
.
This terminal energizes any factory installed ventilation
option.
NOTE:
For total and proper control using DDC, a total
of 7 controlled outputs are required (6 if no
ventilation system is installed). For proper
system operation under Emergency Heat
conditions where the compressor needs to
be deactivated, the B-W2-E outputs need to
be energized. Removing the Y (compressor)
signal alone turns the compressor off, but does
not activate the additional circuitry embedded
in the heat pump for proper and complete
operation.
