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Technician Settings P08 to P10
P08 – Functionality of T1 terminals
"00" -
T1 terminals are not in use
"01" -
External sensor
"02" -
T3 Soft start in heat sensor (FC) * or
De-icing in cool (AC) **
"03" -
Door switch
"04" -
Key tag
"05" -
T Economizer
(DIP switch SW2.6 must be ON)
* In heating mode, the fan will not start before there is hot water in the
coil.
Note: To view T3 on the BACnet Thermostat, see Technician Settings
P84.
** Allow de-icing operation of indoor coil in cooling.
P09 –
Functionality of IN1,0 terminals
"00" -
IN1,0 terminals are not in use
"01" -
*T2 (Change over sensor) (FC) or
De-icing in heat (AC)
"02" -
**T3 (Soft start in heat sensor) (FC) or
De-icing in cool (AC)
"03" -
Window contact - Remote On/Off switch
"04" -
Window contact - Remote Economy switch
"05" -
***External Passive Infrared detector
* In 2-Pipe system, T2 will sense the water temperature in the pipe in
order to select/allow effective system mode.
Note: To view T2 on the BACnet Thermostat, see Technician Settings
P83.
** Where T1 terminals are used for external sensor, the IN1,0 terminals
can be used for T3 sensor.
Note: To view T3 on the BACnet Thermostat, see Technician Settings
P84.
P10 – Window contact (terminals IN1,0) polarity
"01" - Normally open
"00" - Normally closed
ComfortVu™ BACnet Thermostat Model Standard TB-24-HM (24 Vac)Carrier Proprietary and Confidential
Installation and Operation Guide
43
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