Operating Sequence General The Prolon M2000 Boiler controller receives readings from three different temperature sensors: outside air, supply water and return water. In addition to the temperature sensors, it also has inputs for proof of operation of the pumps. It can receive data from Prolon master controllers such as outside temperature, occupancy, or the average heating request of the building.
Components Component Identification Figure 1 - Component Identification Legend: A - Addressing Dipswitch B - AUTO/OFF/HAND Switches C - RS485 INT port for interface communication (RJ45 plug and screw connectors are in parallel) D - Analog outputs (3) E - Digital outputs (5) F - Analog inputs (9) G - RS485 NET port for network communication H - Terminal block for 24VAC (Class 2 transformer)
When this LED is ON and steady, the M2000 is inactive present on analog output 1. and the microchip is awaiting programming (you must use Prolon’s Focus software to reprogram the • DO5: Represents the activity of digital output 5. microchip).
• INT: These are the jumpers for the bias and terminating resistors used for the interface communication bus. See the Prolon network guide for information about bias and terminating resistors. (See Figure 5) • NET: These are the jumpers for the bias and terminating resistors used for the network communication bus. See the Prolon network guide for information about bias and terminating resistors.
The M2000 Boiler Controller has 2 separate communication ports offering the same functionality on each. Both act as ports for incoming Modbus communications from other Prolon devices or interfaces, such as a Network Controller or remote computer with Prolon Focus software.
The example in Figure 9 shows the switches 1, 2 and 4 in the ON position. Therefore, the corresponding values are 1, 2 and 8, giving an address sum of 11. The Prolon network allows a maximum of 127 addresses; therefore 127 controllers. Figure 10 - Addressing Dipswitch...
Inputs Temperature Sensors The M2000 Boiler controller has three analog inputs that monitor supply, outside and zone air temperatures (see Figure 10) and will integrate these readings into its control sequence. The sensors used are standard 10k type 3 thermistors that share a single common connection.
Max Heat Setpoint The M2000 has one analog input dedicated to enabling the maximum heating setpoint. By shorting the input to ground, the M2000 Boiler controller will use its highest hot water setpoint when using the setpoint reset feature. If the M2000 Boiler controller is using a fixed setpoint, then this input has no effect on the operation of the controller.
The M2000 Boiler controller contains 8 customizable outputs; five triac ON/OFF outputs (24VAC) and three analog outputs (0-10VDC). Output configuration is performed via the Prolon Focus software. An integrated resettable fuse protects each of the outputs of the M2000 against current surges and short circuits. This protection will cut the current to the output as soon as an overload condition is detected.
Typical Connection of Triac Outputs 1 to 5 On the M2000 Boiler controller, all triac outputs produce a 24 VAC live voltage when activated. Note that all output voltages originate from a single voltage supply: the equipment’s transformer. Consequentially, only the live side of the output connections are usually needed;...
Figure 17 - Connecting the 24VAC Power Source Network Communication The Prolon M2000 Boiler controller is designed to work standalone or networked with Prolon master controllers. When networked, the master transmits the occupancy status, outside temperature and math demand in real-time. The network connections are made using the network terminal block located on the M2000 controller (see Figure 15).
Environment: 32-122 ºF (0-50 ºC) Non-Condensing Certification: UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS The performance specifications are nominal and conform to acceptable industry standards. Prolon Inc. will not be liable for damages resulting from misapplication or misuse of its products.
Caution: Any changes or modifications not approved by Prolon can void the user’s authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
No part of this document may be photocopied or reproduced by any means, or translated to another language without prior written consent of Prolon. All specifications are nominal and may change as design improvements are introduced. Prolon shall not be liable for damages resulting from misapplication or misuse of its products.