Controller
M2000
Program
Hydronic
Supply
24 VAC, Class 2
Outputs
5 DO / 3 AO
Protocol
Modbus RTU (RS485)
Panel
NEMA 1, UL508A
Overview
The Prolon PL-PN1-7J is a pre-wired, UL508A certified NEMA 1 control panel built with one Prolon M2000 controller running the Hydronic Controller program, which controls a variety of water-to-water heatpumps and hydronic systems. Isolation relays on all digital outputs, overcurrent fuse protection and clearly marked terminal blocks come factory wired.
Program strategies include hot and cold tank, dual recovery system, single hot tank with open or closed boiler loop and dual energy boilers. The panel contains 1 Modbus RTU (RS485) node and runs stand-alone or on a Prolon network of up to 127 nodes.
Specifications per Prolon Pre-Wired One Controller Panel datasheet PL-DATA-PANEL1CON-EN-V1; Prolon PL-M2000-HYD Controller datasheet REV 7.3.0 / PL-DATA-M2000HYD-C/F-EN; Prolon M2000 Hydronic Controller Hardware Guide REV 7.3.0; Prolon One Controller Panel product page (proloncontrols.com) retrieved 2026-09-22. Reviewed September 2026.
Best For
- Water-to-water heat pump plants
- Hot and cold tank or dual recovery systems
- Dual energy boiler installations
Warranty
For warranty coverage on this Prolon panel, contact ZOT Supply at sales@zotsupply.com or 855-825-2811.
Key Features
Hydronic sequence library
Sequences include hot and cold tank, dual recovery, single hot tank with open or closed boiler loop, and dual energy boilers.
17A isolation relays
Every digital output is isolated by a relay rated 17A @ 277 VAC built into the panel (M2000 = 5), and the controller outputs are protected by resettable fuses.
Fused, pre-wired NEMA 1 panel
Clearly marked terminal blocks, wire management channels and a disconnect-style Slo-Blo fuse (3A @ 250 VAC) with a replacement fuse included. The panel wiring diagram is in the door, and all inputs and outputs are tested in the factory.
Reflash to another program
The M2000 keeps its full functionality, including the ability to reflash into a different controller program. Wiring diagrams are available free at proloncontrols.com.
Manual/off/auto switches
A manual/off/auto switch for each of the eight outputs of the M2000 controller.
Free Prolon Focus software
Remote monitoring and configuration with free Prolon Focus software, stand-alone or networked up to 127 nodes.
Technical Specifications
| Panel | |
|---|---|
| Controller | Prolon M2000, Hydronic Controller program |
| Supply | 24 VAC ±10%, 50/60 Hz, Class 2 |
| Overcurrent Protection | Disconnect-style Slo-Blo fuse (3A @ 250 VAC), with additional replacement fuse included |
| Enclosure | NEMA 1 |
| Panel Dimensions | 12.25 in. W x 16.25 in. H x 6.25 in. D |
| Weight | 23 lbs (10.5 kg) |
| Isolation Relays | 17A @ 277 VAC on all digital outputs (C1050 = 4, M2000 = 5) |
| Environment | -4 to 122 °F (-20 to 50 °C), non-condensing |
| Panel Certification | Complete panel is UL508A certified |
| Certification | UL916 Energy Management Equipment, CAN/CSA-C22.2, RoHS, FCC part 15: 2012 class B |
| M2000 Controller Hardware | |
| Power | 5 VA (consumption), 40 VA (Input) |
| Inputs | 9 configurable analog inputs whose roles vary according to the selected sequence. Input signals (thermistor / dry contact / 4-20mA / 0-5 VDC) individually configurable for each input |
| Digital Outputs | 5 triac outputs, 10-30 VAC source, 300 mA max (resettable fuse) |
| Analog Outputs | 3 x 0-10 VDC outputs, 40 mA max (resettable fuse) |
| Indication Lights (LED) | State of each output / Communication / Power / State of microprocessor |
| Casing | Molded ABS, UL94-HB |
| Communication | Modbus RTU (RS485), up to 127 nodes |
| Baud Rates | 9600, 19200, 38400, 57600, 76800, 115200 |
| Connection | Removable screw-type terminal blocks (16 AWG max) and RJ45 modular jacks |
| Hydronic Controller Program | |
| Program | Hydronic Controller |
| Application | Controls a variety of water-to-water heatpumps and hydronic systems |
| Program Inputs | 9 configurable analog inputs (thermistor / dry contact / 4-20mA / 0-5 VDC) |
| Program Outputs | 5 triac outputs; 3 x 0-10 VDC analog outputs, 40 mA max (resettable fuse) |
Documentation
Frequently Asked Questions
What is the Prolon PL-PN1-7J?
A pre-wired one controller panel built with a Prolon M2000 controller running the Hydronic Controller program, in a UL508A certified NEMA 1 enclosure with isolation relays on all digital outputs.
What does the hydronic program control?
It controls a variety of water-to-water heatpumps and hydronic systems. Strategies include hot and cold tank, dual recovery system, single hot tank with open or closed boiler loop and dual energy boilers.
Which inputs does the PL-PN1-7J use?
9 configurable analog inputs (thermistor / dry contact / 4-20mA / 0-5 VDC).
What power does the panel require?
24 VAC ±10%, 50/60 Hz, Class 2. The M2000 draws 5 VA (consumption), 40 VA (input).
Are the outputs isolated and protected?
Yes. Every digital output is isolated by a relay rated 17A @ 277 VAC built into the panel, the triac outputs are rated 300 mA max with resettable fuses, and the panel has a disconnect-style Slo-Blo fuse (3A @ 250 VAC) with a replacement fuse included.
How does the PL-PN1-7J communicate?
Modbus RTU (RS485), up to 127 nodes, at 9600 to 115200 baud. The panel contains 1 node and is configured with free Prolon Focus software.
What size is the PL-PN1-7J panel?
12.25 in. W x 16.25 in. H x 6.25 in. D, and it weighs 23 lbs (10.5 kg).
- Panel Type:
- Single Controler Panel
- Display:
- No Display
- Controller Type:
- Hydronic
- Communication:
- Modbus RTU (RS485)
