NEXUS® NXM2G EFFICIENCY CONTROL

The NXM2G is designed to prevent boiler dry cycling which occurs when a boiler loses heat to its surroundings. The NXM2G is fully compatible with existing control systems and building management. Designed for use with low & medium temperature water boilers, single stage burners, fully modulating burners and many more.

Intelligent Boiler Load Optimizer
The NXM2G system is an intelligent micro -processor based boiler load
optimization control system designed to REDUCE ENERGY COSTS
by providing optimum thermal efficiency of Low Temperature Hot Water
(LTHW) boilers. 
How It Works:

The NXM2G measures the supply and return temperature via digital
sensors and monitors the “call for heat”.
• On first firing, the boiler will reach the normal thermostat set
 point and turn off.
• On the next stage, the NXM2G will check:
 i. For the “call for heat”
ii. If the boiler supply and return temperatures are within
the designed temperature differential settings, and
iii. If the boiler is required to fire, based on control algorithms.
When this occurs, the NXM2G will hold off the boiler firing (save mode) based on temperature and time,
which are both adaptive. This control function will also inhibit the burner from firing on high fire if the boiler
load demand is low, thus ensuring the best efficiency for the current system demand. This eliminates the wasted
energy caused by standby cycling.
Value Delivered:

• Clients are observing energy and carbon savings
 of 10% - - 20%
• Controlling boiler short cycling provides significant
energy and maintenance savings
i. Boilers turn off and on many times,
every time it cycles, the boiler purges,
which exhausts heat from the system.
Reducing these cycles reduce energy input
to reheat the boiler.
• Fast Payback with low capital investment

NXM2G SPECIFICATIONS
• Supply Voltage: 120V AC / 60Hz
• Rated Current: 50mA
• Relay Switch Cap: 2A at 120V AC (resistive)
• Fuse Rating: 1.6A @ 120V AC
• Dimensions: 6.9” W x 7.9” H x 2.1” D
• Sensors: Plug in Digital Therm (2)
• Sensor Range: 131°F to 257°F
• Weight : 3.6 pounds
• Environment: NEMA 1/IP11

• Min/Max Temp: 32°F to 125°F

PPC 6000
Pub No.
Product
PPC-6001 PPC 6000 Series Fuel/Air ratio controller NXOG-6001 Operators Guide for PPC 6000 Series
NXPG-6001 Programming Guide for PPC 6000 Series MinOptP6000_6100 NEXUS NX6100/PPC6000 Minimum operation parameter setings setup


EXPANSION
Pub No.
Product
NXEXP-6001 NXEXP300 expansion unit for feed water and draft control for Fireye NX6100/PPC6000 NXESI-6101 External Servo Interface for NX6100 and PPC6000 Series


PPC4000/NXF4000
Click here to see the wiring video. /tr>
Pub No.
Product
PPC-PF PPC4000 Product Overview PPC4000-WD Wiring Diagram - PPC4000 with Burnerlogix or Flame Monitor
PPC-4001 PPC4000 Series Fuel Air Ratio Controller NXD-4101 NXD410 user interface used with PPC4000 fuel air ratio controller
NXCESO2-1001 NXCESO2 Oxygen Probe for use with PPC4000 Controller NXCESVFD-1001 NXCESVFD Plug-In Assembly for use with PPC-4000
MOD-4001 PPC4000 Modbus Communications NEX-3004 FX04 and FX04-1 Servo Motor Installation for PPC4000
NEX-3020 FX20 and FX20-1 Servo Motor Installation for PPC4000 NEX-3050 FX50 and FX50-1 Servo Motor Installation for PPC4000
NXTSD-4001 NXTSD4xx Touchscreen Installation Guide NXTSD-4002 NXTSD4xx Touchscreen Operators Guide
133-745 Installation sheet 133-745 59-562-2 cable for NXD410
user interface 133-747 129-192 For Use With FX04-1, FX20-1, FX50-1 SERVOS
133-748 59-565-X Cordset, 5 Conductors, Moulded Double End 133-750 35-381-2 O2 Probe Mounting flange for Use With NXCESO2 Oxygen Probe
133-751 Replacement cartridge for NXCESO2 Probe 133-755 129-194 SERVO CONNECTOR KIT for FX04, FX20, FX50
133-763 Installation replacement cooling fan for PPC4000 and NXCESO2 Probe SDReaderApp SD Card File Reader Application (zipped file)
133-765 Special instructions for using NXTSD407 & NXTSD413 displays NXF-4001 NXF4000 Series Fuel Air Ratio Controller with integrated flame safe guard.
NXCESAMP-1001                Plug-in amplifier for NXF4000 NXF4000-WD Wiring Diagram - NXF4000 Click here to see the wiring video.
NXF-PF NXF4000 Product Overview NXF-PPC4000-IN1 NXF4000 Vs PPC4000 comparison
NXF-PPC4000-IN4 NXF4000/PPC4000 Sensors NXF-PPC4000-IN2 NXF4000/PPC4000 displays
NXF-PPC4000-IN3 NXF4000/PPC4000 Servos/O2 Probe 
NXM2G
Pub No.
Product
NXM2G-1001 Intelligent boiler load control UL version NXM2G-1002 Intelligent boiler load control CE version




Accessories
Pub No.
Product
NEXBK-1000 Nexus Bracket and Coupling Accessories UC-4851 UC485 Optically isolated USB to RS422/RS485 converter
NEX-1502 ComFire 2 Combustion Analysis Tool 133-761 PXMS Pressure transmitter Installation Instructions
FXIATS-1 Ambient air temperature transmitter for use with the PPC4000 Series Fuel/Air Ratio Controller 




Danfoss VLT Drives
Pub No.
Product
176R0581 Danfoss HVAC Spec Sheet Setup Danfoss Drive Setup
176R0583 Danfoss HVAC Drive with EMB 
Nexus (3000/4000 Legacy)
Pub No.
Product
NEX-1001 Nexus Integrated Burner Control System, NX3100, NX4000, NX4100, NX5100, NX1466, NX1386, NX550, NX552, NX1021, NX1034, NX1030, NX1040, NX1044 NEX-1002 Nexus Expansion Interface and Expanded Burner Control System, NX280HW, NX280VSD, NX280ATI, NX280PK, NXA-CAB, NXA-PWS, NXA-PS500, NXA-PS1000
NEX-1502 ComFire 2 Combustion Analysis Tool NEX-2004 NEXUS NX04-1, -2 Servo Motor Installation, NX04-1, NX04-2
NEX-2020 NEXUS NX20-1, -2 Servo Motor Installation, NX20-1, NX20-2 NEX-2050 NEXUS NX50 -1, -2 Servo Motor Installation, NX50-1, NX50-2
NEX-3026 see obsolete NEX-2098 Nexus NX98 -1, -2 Servo Motor Installation, NX98-1
NEXBK-1000 Nexus Bracket and Coupling Accessories NEX-SO FIREYE ® Nexus and PPC5000 Boiler Sequencing
133-715 Instruction sheet for NX1021 / NX103x sensor NXQD-1000 Quick Disconnect Cordset & Receptacle, NXQD1FM, NXQD1M
NXMBIV2 Nexus Modbus Interface NXMBI-V2 


PPC 5000
Pub No.
Product
PPC-5000 PPC 5000 Series Fuel/Air ratio controller, PXMS, PPC5000, AH21245, AH221244-002, AH221246-002, LA221419 NEX-SO FIREYE ® Nexus and PPC5000 Boiler Sequencing