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20656 Rev. B  02/16

(800) 234-4239

http://www.networketi.com

Environmental Technology, Inc.

We manage heat

®

®

Environmental Technology, Inc.

1850 N Sheridan Street

South Bend, Indiana 46628

(574) 233-1002 or (800) 234-4239

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

http://www.networketi.com/

Freeze Protection Thermostat

TRACON

® 

MODEL GPT–3

Installation and Operation Manual

Summary of Contents for TRACON GPT-3

Page 1: ...Technology Inc We manage heat Environmental Technology Inc 1850 N Sheridan Street South Bend Indiana 46628 574 233 1002 or 800 234 4239 FAX 574 233 2152 or 888 234 4238 http www networketi com Freeze...

Page 2: ...Tracon Model GPT 3 Freeze Protection Thermostat Installation and Operation Manual 20656 Rev B 02 16 800 234 4239 http www networketi com 2 of 12 Environmental Technology Inc...

Page 3: ...Technology 4 General 5 Introduction 5 Operation 6 Normal 6 Abnormal 6 Installation 6 First 6 Next 6 Location 7 Supply and Heater Connections 7 Sensor and Alarm Relay Connections 8 General 8 Temperatu...

Page 4: ...instructions contained herein and those provided by the heater manufacturer Use a GFEP Ground Fault Equipment Protection circuit breaker on each branch circuit connected to the ice melting system Cle...

Page 5: ...ensor included to measure the hot end temperature Depending upon how long it takes the cable to reach its operating temperature such that the monitor sensor is less than 5 F 3 C below the control sens...

Page 6: ...are a cold heater Many indicators display additional information concerning equipment failures through flashing see How the GPT 3 LEDs Work at left Check the Troubleshooting section for additional inf...

Page 7: ...the compartment provided for low voltage Class 2 connections Supply and Heater Connections The GPT 3 operates from 120 208 240 or 277 volts which it automatically selects The heaters and GPT 3 operate...

Page 8: ...for extension wires is recommended Never route Class 2 circuits in the conduit used for supply and heater voltage circuits Temperature Sensors Two identical temperature sensors are supplied with the...

Page 9: ...lay connections Alarm Relay Contacts Figure 5 shows the alarm relay connections The relay contacts are rated for one amp in NEC Class 2 service Contact Customer Service if higher voltage operation is...

Page 10: ...Make any DIP switch changes before making the supply voltage and heater connections Otherwise it will probably be necessary to break and re make these connections DIP switch poles that do not require...

Page 11: ...enance General The GPT 3 does not require routine maintenance It contains no field replace able components Troubleshooting The GPT 3 provides extensive fault diagnosis capability for the purpose of qu...

Page 12: ...mprovements The ETI logo We Manage Heat Tracon and GPT are registered trademarks of Environmental Technology Inc Copyright 2013 Environmental Technology Inc All rights reserved No part of this manual...

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