ETI EUR–5A Installation And Operation Manual

Automatic snow ice melting system control

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We manage heat

Automatic Snow/Ice Melting System Control

MODEL EUR

–5A

™

Installation and Operation Manual

Environmental Technology, Inc.

1850 N Sheridan Street

South Bend, Indiana 46628

(574) 233-1202 or (800) 234-4239

FAX (574) 233-2152 or (888) 234-4238

http://www.networketi.com

21776 Rev. E 09/16

(800) 234-4239

www.networketi.com

Environmental Technology, Inc.

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Page 1 ® We manage heat ® Automatic Snow/Ice Melting System Control MODEL EUR –5A ™ Installation and Operation Manual Environmental Technology, Inc. 1850 N Sheridan Street South Bend, Indiana 46628 (574) 233-1202 or (800) 234-4239 FAX (574) 233-2152 or (888) 234-4238 http://www.networketi.com 21776 Rev.
Page 2: Table Of Contents
Make sure that your installation and all electrical connections conform to the NEC (ANSI/NFPA 70) in the United States of American, to the Canadian Electrical Code in Canada, and to all applicable local electrical codes and laws. The EUR–5A, RCU–3, and ETI environmental sensor are all rated as NEC Class 2 devices. Items included...
Page 3: Product Overview
Computer. A remote control is included to supplement the front panel controls. Figure 1 shows a typical snow melting system using the EUR–5A. It is compatible with all ETI snow and ice sensors including the CIT–1 aerial sensor, GIT–1 gutter sensor, and the SIT–6E pavement sensor. The EUR–5A also includes a High Temperature Limit Sensor for maximum energy efficiency.
Page 4: Operation
Model EUR–5A Snow & Ice Melting Control Operation The snow and ice melting system normally will operate automatically. When any sensor detects snow or ice, the heater output will turn on. When snow or ice is no longer present at any of the sensors, then the hold-on time starts.
Page 5 Model EUR–5A Snow & Ice Melting Control EUR–5A Front Panel The EUR–5A front panel provides the following controls and indicators: • SUPPLY indicator – This green LED indicates that the EUR–5A is receiving 24 VAC power. • HEAT indicator – This yellow LED indicates when the heaters are on. Also it will flash if the high temperature limit sensor is disconnected.
Page 6: Installation
The EUR–5A and ETI sensors are Class 2 devices and utilize Class 2 wiring. The EUR–5A should be housed in a protected location that meets local electrical code. The EUR–5A can be mounted in the same panel as the heater contactors, as long as no unrelated circuits are present and the required internal spacings and barriers are implemented.
Page 7 Model EUR–5A Snow & Ice Melting Control Power Source and Contactor Connections The EUR–5A operates from a 24 VAC NEC Class 2 power source. The optional 120 to 24 volt control transformer is included for use in installations using 120 VAC power. Figure 5 shows power and contactor connections for a typical installation.
Page 8 Model EUR–5A Snow & Ice Melting Control Determining the amount of sensors you can use The EUR–5A has 46 watts of power available for use between the sensors and contactor. The power requirement of your contactor will determine the amount watts left available for your sensors. After determining your contactor's power requirement, subtract that from the 46 available watts, the result will be your available power for your sensors.
Page 9 Model EUR–5A Snow & Ice Melting Control Figure 10. RCU–3 installation RCU–3 remote control connection to EUR–5A The RCU–3 remote control unit mounts in a single gang switch box. It can be located up to 500 feet (152.4 m) from the EUR–5A at a location convenient for observing snow melting system operation.
Page 10: Troubleshooting
Model EUR–5A Snow & Ice Melting Control Troubleshooting If there are any problems with system operation, the cause can be located and repaired as follows: First, verify that all of the wiring connections are secure, and check fuses. Make certain that all EUR–5A terminal block screws are snugly tightened.
Page 11: Ordering Information, Warranty And Service
Inc. to notify any person or organization of such revisions, changes or improvements. The ETI logo, We Manage Heat, CIT, GIT, and SIT are registered trademarks of Environmental Technology, Inc. EUR and RCU are trademarks of Environmental Technology, Inc. Copyright © 2014 Environmental Technology, Inc. All rights reserved. Printed in USA.
Page 12: Terminal Connections
Model EUR–5A Snow & Ice Melting Control EUR-5A Terminal Connections Terminal # Label Description Temperature Sensor High Temperature Limit Sensor (included) Temperature Sensor Return High Temperature Limit Sensor (included) No Connection Remote Control RCU-3 (included) Remote Control Return RCU-3 (included) No Connection No Connection No Connection...
Page 13: Specifications
ETI sensors including CIT-1, GIT-1, and SIT-6E. Temperature Limit Sensor For ETI High Temperature Limit Sensor (ETI 25076, included). Can be bypassed with 470k resistor. Remote Control Unit For ETI RCU-3 Remote Control Unit (ETI 21357, included) Remote Heat Cycle Allows connection of external pushbutton for Heat Cycle control.
Page 14: Eur–5A Snow And Ice Melting Control
Model EUR–5A Snow & Ice Melting Control EUR–5A SNOW SWITCH ® ® Environmental Technology, Inc. networketi.com We manage heat ® www.networketi.com (800) 234-4239 14 of 12 Environmental Technology, Inc. 21776 Rev E 09/16...

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