L Connection - Energence Rooftop Units Network Control System - Bulletin No. 210594 - September 2013

Oct 17, 2026

L Connection® Network Control System for Energence® rooftop units provides advanced single-point control for HVAC systems and building operation. The bulletin describes a network architecture combining a Network Control Panel, multiple controllers, zone controllers, and sensors to enable monitoring, scheduling, temperature setpoints, and humidity control while reducing wiring and installation effort. It highlights remote local access via optional PC software, troubleshooting by contractors, integration with third-party electro-mechanical equipment, and cost-effective energy and maintenance savings, supported by product component identification rules and warranty terms.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages96

Reading Time4 h 2 min

AccessFree to download

Controls and Product Specifications

Features and Benefits

Component Identification

System Architecture

Warranty

CONTROLS PRODUCT SPECIFICATIONS L Connection® Network Control System For Energence® Rooftop Units Bulletin No. 210594 September 2013 Supersedes May 2013 Commercial Building Automation System Advanced Single Point Control For HVAC Systems And Building Operation FEATURES AND BENEFITS CONTENTS Building Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Component Identification 2 Features And Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Network Control Panel ........................... 13 Network Thermostat Controller .......................23 Prodigy® Unit Controller ...........................15 System Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 System Components-Controllers .....................13 System Components-Miscellaneous Accessories ............81 System Components-Network .......................63 System Components-Ordering Information ................91 System Components-Sensors ......................34 System Components-Software . . . . . . . . . . . . . . . . . . . . . .72 System Overview 6 System Selection Flowcharts . . . . . . . . . . . . . . . . . . . . . . . . 7 Zone And Bypass Dampers .........................78 Zone Link ..................................30 COMPONENT IDENTIFICATION C 0 SNSR 2 1 ae 1 l | | Product Family
C = Commercial Generic S = S-Class®
T = T-Class™ | | | --- | --- | --- | | Product Type
0 = Building Automation / Automatic Temperature Control
1 = Rooftops
2 = Air Conditioners and Heat Pumps
3 = Indoor Coils / Air Handlers
4 = Furnaces
5 = Unit Heaters / Duct Furnaces
6 = General or Multi-Purpos | | | Basic Description SNSR = Sensor SNSJ = Sensor, Adjustable SNCT = Sensor / Controller SNDC = Sensor, Duct SNMT = Sensor, Multiple Function SNZN = Sensor, Zone (non-adjustable) STAT = Thermostat CTRL = DDC Controller or Interface SWCH = Switch SOFT = Software MISC = Miscellaneous (cables, wire, etc. ) Specific Description 1 (example: CTRL) Controller Description, 1 Digit 0 = Lennox Unit Controller 1 = Lennox Network Controller 2 = Lennox Building Controller 3 = Third-Party Controller 4 = Systems Integration Software (includes software drivers, configuration files, plug-ins, etc.) 5 = Systems Integration hardware (gateway devices) Specific Description 2 (example: CTRL) Controller Description, 2nd Digit Specific to Catalog Number (example: CTRL00 = Sectra Bypass Control Kit 23M51) Box Size 1st character is smallest applicable size 2nd character is largest applicable size If only certain sizes are applicable, letters can be placed out of sequence.(example: EA” applicable to A and E box sizes only) A = A-Box Size B = B-Box Size and so on. Voltage (Only shown if voltage dependant) Y = 208/230V-3 Phase G = 460V-3 Phase J = 575V-3 Phase L = Low Voltage (typically 24V) L Connection® Building Automation System-Energence® / Page 2 FEATURES AND BENEFITS Save money and time and provide a higher level of control by commanding a wide range of functions from a single location. The L Connection® Network makes it easy to manage HVAC, zoning and building operations from a single point of control, minimizing energy and maintenance costs. It was designed to enhance the functionality and performance of Lennox’ premium rooftop units featuring the Prodigy® Unit Controller as well as other Lennox rooftop units and split systems. It is also fully compatible with electro-mechanically controlled third-party equipment. It’s a cost-effective way to minimize your building’s energy use and better manage facility operations. L Connection Network not only improves building efficiency and comfort, it also helps to improve staff efficiency and productivity. Temperature setpoints can be adjusted quickly and intuitively at the Comfort Sensor. For more advanced control, facility managers can access and troubleshoot oth

FAQs

What functions does the L Connection network provide from a single control location?

It allows command of a wide range of HVAC, zoning, and building operation functions from one location, improving energy and maintenance efficiency while supporting advanced comfort control.

How does the Comfort Sensor enhance temperature control and monitoring?

It combines a temperature sensor with optional relative humidity (RH) and carbon dioxide (CO2) options, supports adjustable temperature setpoints via an optional LCD interface, and enables zone controller capabilities in commercial zoning applications.

What remote access and troubleshooting capabilities are supported?

Optional PC software provides local or remote access to a specific controller or the entire network using a modem or the Internet, enabling remote diagnosis and troubleshooting without sending a technician to the site.

Oct 17, 2026

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