Jump to Navigation

Johnson Controls LX-VAVLF-1, LX-VAVLN-1, and LX-VVTLF-1 LX Series Variable Air Volume (VAV)/Variable Volume and Temperature (VVT) Controllers

LX Series Variable Air Volume (VAV)/Variable Volume and Temperature (VVT) Controllers

The LX Series VAV/VVT Controllers use the latest technology to provide you more flexibility and reliability of control. The LXVAVLF- 1, LX-VAVLN-1, and LX-VVTLF-1 controllers are designed to meet the requirements of single duct VAV or VVT applications. The LX VAV/VVT controllers are based on LONWORKS® technology for interoperability and peer-to-peer communication between controllers without any intermediary, but also integrate seamlessly into the Facility Explorer system.

• configurable software - features FX Workbench compatible wizards, which provide the ability to easily configure inputs, outputs, and sequence options. Configured device complies with LONMARK Space Comfort Control (SCC) profile for interoperability with other LONMARK devices
• robust hardware - allows you to use any commercially available thermistor type (100 ohm to 10 k ohm) and setpoint potentiometer type. Features an extremely accurate onboard airflow sensor for pressure independent single duct VAV applications. The controller can read differential pressure as small as 0.04 milli-inches
• powerful control options - performs Demand Control Ventilation based on CO2 sensor readings to ensure high indoor air quality in an efficient manner. Provides you with the ability to link VAV occupancy status with local lighting control

Product Codes LX-VAVLF-1, LX-VAVLN-1, LX-VVTLF-1
Power Requirements Voltage 24 VAC/DC; ±15%, 50/60 Hz, Class 2
Protection 3 A removable fuse for triac when using the internal power supply
Consumption 5 VA
Maximum Consumption 10 VA (normal), or 85 VA if internal power supply is used for triac (special application)
Ambient Conditions Ambient Operating
0 - 70°C (3 to 158°F)
Ambient Storage
-20 to 70°C (-4 to 158°F)
Relative Humidity 0 to 90%
General Processor Neuron® 3150®, 8 bits. 10 MHz
Memory Nonvolatile Flash 64k (storage) (APB application) Non-volatile Flash 64k (storage)
Media Channel TP/FT-10, 78 Kbps
Communication LonTalk® protocol
Transceiver Echelon FTT-10
Enclosure (housing) Material FR/ABS Resin
Dimensions (with screws) 4.88 x 8.9 x 2.48 in. (124 x 226 x 63 mm)
Shipping Weight 2.30 lb (1.05 kg)
Inputs Quantity 4 universal software configurable
Input Types Digital: Dry Contact,
Analog Voltage: 0 -10 VDC, Accuracy: ±0.5%,
Analog current: 4 to 20 mA with 249 ohm external resistor
Resistor Support Thermistor: 100 ohm (PT100), 1 K (RTD I K Type 85), 10 K (Type, 2, 3),
Range: -40 to 125ºC, (-40 to 257ºF)
Accuracy: ±0.5ºC, ±0.9ºF
Resolution: 0.1 to 0.18ºF (10k ohm to 100k ohm supported using translation table)
Potentiometer 10k ohm or 100k ohm, translation table (21 points)
Differential Range 0-250 Pa (0-1 in. H20)
Pressure Sensor (VAV model only): Resolution 0.04 milli-inches H20
Accuracy ±0.3% full scale
Input Resolution 16-bit analog/digital converter
Hardware Outputs Quantity 6 Hardware
4 Digital: Triac 0.75 A at 24 VAC, External or Internal power supply
2 Universal: 0-10 VDC linear, digital 0-10 VDC linear, digital 0-12 VDC
(Analog or Digital) or PWM 20 mA max, Maximum load 600 ohm
Output Resolution: 10-bit digital/analog converter
Damper Actuator Torque 35 in·lb, 4 N·m
Angle of Rotation: 95º adjustable
Fits Shaft Diameter: 5/16 to 3/4 in. (8.5 mm to 18.2 mm)
Power Supply: from controller

Main menu 2