Contact 2: Demand limit
selection
Used with the remote operating mode (Remote)
Contact 3: Setpoint selection 1
Contact 4: Setpoint selection 2
Supply fan status contact
Indoor air flow verification input
RS-485 series connection
- Pin 1: signal +
- Pin 2: ground
- Pin 3: signal -
Cooling only single or dual circuit unit or heat pump dual circuit unit with thermostat input configuration
Used with the thermostat operating mode (TSTAT).
SIOB2 board is used for dual-circuit unit OR unit with additional heating
stages
Supply fan status contact
Indoor air flow verification input
RS-485 series connection
- Pin 1: signal +
- Pin 2: ground
- Pin 3: signal -
Heat pump dual compressor single circuit unit with thermostat input configuration
Used with the thermostat operating mode (TSTAT).
SIOB2 board is used for dual-circuit unit OR unit with additional heating
stages
Supply fan status contact
Indoor air flow verification input
RS-485 series connection
- Pin 1: signal +
- Pin 2: ground
- Pin 3: signal -
Heat pump single compressor single circuit unit with thermostat input configuration