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9
3 - HARDWARE
Contact 2: Demand limit
selection
SIOB1, circuit A
DI-02
J1
Used with the remote operating mode (Remote)
Contact 3: Setpoint selection 1
SIOB1, circuit A
DI-03
J1
Contact 4: Setpoint selection 2
SIOB1, circuit A
DI-04
J1
Enthalpy contact
SIOB2, circuit B
DI-04
J1
Supply fan status contact
SIOB1, circuit A
DI-07
J1
Indoor air flow verification input
Fire contact
SIOB1, circuit A
DI-05
J1
Fire safety input
Alarm relay output
SIOB1, circuit A
DO-05
J25
CCN network connection
SIOB1, circuit B
J4
RS-485 series connection
- Pin 1:
- Pin 2: ground
- Pin 3: signal -
Cooling only single or dual circuit unit or heat pump dual circuit unit with thermostat input configuration
Description
Board
Input/Output Connector Remarks
Contact 1: G contact
SIOB1, circuit A
DI-01
J1
Used with the thermostat operating mode (TSTAT).
Contact 2: Y1_W2 contact
SIOB1, circuit A
DI-02
J1
Contact 3: Y_Y2 contact
SIOB1, circuit A
DI-03
J1
Contact 1: W_W1 contact
SIOB2, circuit B
DI-01
J1
SIOB2 board is used for dual-circuit unit OR unit with additional heating
stages
Contact 2: O_W2 contact
SIOB2, circuit B
DI-02
J1
Enthalpy contact
SIOB2, circuit B
DI-04
J1
Supply fan status contact
SIOB1, circuit A
DI-07
J1
Indoor air flow verification input
Fire contact
SIOB1, circuit A
DI-05
Fire safety input
Alarm relay output
SIOB1, circuit A
DO-05
J25
CCN network connection
SIOB1, circuit B
J4
RS-485 series connection
- Pin 1:
- Pin 2: ground
- Pin 3: signal -
Heat pump dual compressor single circuit unit with thermostat input configuration
Description
Board
Input/Output Connector Remarks
Contact 1: G contact
SIOB1, circuit A
DI-01
J1
Used with the thermostat operating mode (TSTAT).
Contact 2: Y1_W2 contact
SIOB1, circuit A
DI-02
J1
Contact 3: Y_Y2 contact
SIOB1, circuit A
DI-03
J1
Contact 1: W_W1 contact
SIOB2, circuit B
DI-01
J1
SIOB2 board is used for dual-circuit unit OR unit with additional heating
stages
Contact 4: O_W2 contact
SIOB1, circuit A
DI-04
J1
Enthalpy contact
SIOB2, circuit B
DI-04
J1
Supply fan status contact
SIOB1, circuit A
DI-07
J1
Indoor air flow verification input
Fire contact
SIOB1, circuit A
DI-05
Fire safety input
Alarm relay output
SIOB1, circuit A
DO-05
J25
CCN network connection
SIOB1, circuit B
J4
RS-485 series connection
- Pin 1:
- Pin 2: ground
- Pin 3: signal -
Heat pump single compressor single circuit unit with thermostat input configuration
Description
Board
Input/Output Connector Remarks