Snow Melt System Controls: LCD-8

Snow Melt System Controls: Configurable, Aerial

Features & Benefits

  • Automatic voltage selection: 100VAC – 240VAC
  • LCD-8 24VAC model available for hydronic, building automation applications
  • Adjustable hold-on time and temperature set-point provide flexibility for a wide range of applications
  • Rated for up to 3 amp inductive loads for pilot duty applications; resistive loads up to 16 amps
  • Weather-resistant NEMA 3R enclosure
  • Hold-on timer continues heater operation after snow stops to ensure complete melting
  • Sno-Test™ automatic testing and manual heater cycle for system testing
  • Simple four-wire installation
  • C-UL-US Listed for Temperature Regulating Equipment
ETI LCD-8

Snow Switch® Model LCD–8

Description

Snow melt system controls just got configurable. Along with ETI’s legendary CIT-1 aerial sensor, the Snow Switch LCD–8 with its configurable magnetic switch, makes automatic snow melting a cost effective alternative in even the smallest applications.

Heaters operate at temperatures below the set-point, 38°F (3.3°C) default, only when required. The adjustable hold-on period, 3 hours default, continues heater operation after snow stops to ensure complete melting.

The LCD–8 controller’s internal magnetic reed switch is used to trigger manual heater cycling and to configure the system’s temperature set-point and hold-on time. The LCD–8 controller operates from either the automatically selecting 100VAC – 240VAC unit, part number 24619, or from the 24VAC unit, part number 24781. The distinct voltage options, along with their configurable temperature set-point and hold-on time functions, are engineered to address a broad number of applications from just two SKUs.

The LCD–8 controls heater loads up to 16 amps resistive or 3 amps inductive. The operating temperature range is –40°F to 140°F (–40°C to 60°C). The redesigned, patent pending, rugged polycarbonate enclosure provides excellent protection at temperature extremes and allows snow to fall away, preventing “iglooing” over the moisture sensor.

The internal magnetic reed switch allows for both configuration and manual heater operation without the  need for external switches—which are susceptible to damage—or opening the unit.

Before the LCD-8, verifying system functionality after installation or troubleshooting used to require ice or circuit cooler spray for controller activation. Today, the LCD–8’s Sno-Test feature performs a self-test after power application, operating heaters in a unique pattern for a few seconds. Reading the test results takes only an AC voltmeter or clamp-on ammeter.

Specifications

General
Approvals C-UL-US Listed 109R, Type 873 Temperature Regulating Equipment.
Area of Use Snow Melt Systems Controls: Nonhazardous locations
Enclosure
Protection NEMA 3R
Cover Attachment Polycarbonate with machine screws
Entries 1 x 3/4″ (25.4 x 19.1mm) entry (bottom)
Material Polycarbonate
Mounting Pole mount
Dimensions 4.6″ w x 6.1″ h (117mm w x 155mm h)
Control
Supply Voltage ETI p/n 24619: 120VAC-240VAC; 50/60 Hz
ETI p/n 24781: 24VAC; 50/60 Hz
Load 3 amp maximum inductive
16 amp maximum resistive
Heater Hold-On Timer 0, 1, 3 (default), 5 hours; configured by magnetic reed switch
Set-Point Temperature Off (moisture only), 36°F/2.2°C, 38°F/3.3°C (default), 40°F/4.4°C;
configured by magnetic reed
Wiring and Cable Ratings
Power Cable Size for heater load (16 amps maximum)
Heating Cable Size for maximum heater load
Environmental
Operating temperature –40°F to 104°F (–40°C to 40°C)
Storage temperature −67°F to 167°F (−55°C to 75°C)

ORDERING INFORMATION

Order Number Description
24619 LCD-8, 100VAC – 240VAC
24781 LCD-8, 24VAC