REV.2.0 / PL-QCK-M2000-EN
4
Boiler Controller
(PL-M2000-BLR )
32-122 °F (0-50 °C) Non-condensing
24 VA
C
INT Port: Incoming RS485 network
communication (Modbus)
AO 3 - Valve (0-10 / 2-10 / 0-5 VDC)
or backup modulating boiler
AO 2 - Modulating boiler
(0-10 / 2-10 / 0-5 VDC)
AO 1 - Pump 2 (ON/OFF) (0/10VDC)
DO 5 - Pump 1
DO 4 - Boiler stage 4
DO 3 - Boiler stage 3
DO 2 - Boiler stage 2
DO 1 - Boiler stage 1
NET Port: Incoming RS485 network
communication (modbus)
Controller’s power source
(24VAC - Class 2)
Bottom row:
common for all outputs
Bottom row:
common for all inputs
Proof of pump 2 (AO1) (dry contact)
Use max heat setpoint (dry contact)
Disable Boiler Call (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)
