PL-M2000-BLR (Modulating Boiler)
AO3 - Modulating Boiler Stage 2
(0-10 / 2-20 / 0-5 VDC)
AO2 - Modulating Boiler Stage 1
(0-10 / 2-10 / 0-5 VDC)
AO1 - Pump 2 (ON/OFF) (0-10 VDC)
DO5 - Pump 1
DO4 - Boiler Backup Stage
DO3 - N/A
DO2 - Boiler Stage 2 Enable
DO1 - Boiler Stage 1 Enable
Occupancy
M2000-RTU
M2000-HP
M2000-HYD
C1050-RTU
C1050-HP
Outside temperature
Math Values
NC2000
Occupancy (optional)
Outside temperature (optional)
INT Port : Incoming RS485
Network Communication
(modbus)
24
VAC
Bottom Row:
Common for all outputs
Bottom Row:
Common for all inputs
Controller’s power source
24 VAC - Class 2
NET Port: Incoming RS485 Network
communication (Modbus)
Proof of Pump 2 (AO1) (Dry Contact)
Return Water temp sensor (10K thermistor)
Proof of Pump 1 (DO5) (Dry Contact)
Supply Water temp sensor (10K thermistor)
Outside air temperature sensor (10K thermistor)
Use Max Heat Setpoint (Dry Contact)
Disable Boiler Call (Dry Contact)
4-10
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