Control & Monitoring

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Control and Monitoring for the Commercial Construction Industry

FWT-3

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Objectives

•Familiarize you with the options for controlling electrical heat-tracing systems

•Familiarize you with the different methods of monitoring electrical heat-tracing systems

•Provide an overview of TTC’s products for control and monitoring

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Summary

XL-TraceFreeze protection

ElectroMelt, IceStopSnow and Ice Melting

RaySolFloor Heating

HWATHot Water Maintenance

Self-Regulating, Line Sensing Control?

Manual or Timed, Floor-Sensing Thermostat, DigiTrace910

Manual, Ambient Thermostat, Building DCS, Snow Controller

Self-Regulating, Ambient & Line Sensing Thermostats, DigiTrace 910

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Control and Monitoring are Different

•Control

– Varying the heating cable output to achieve the desired temperature

•Monitoring

– Providing feedback on the status of the heat-traced system

Control

Monitoring

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Options for XL-Trace

•Self-Regulating

•Ambient sensing control

– Ambient sensing thermostats

•Line sensing control

– Line sensing thermostats

•Monitoring & Control with DigiTrace 910

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Self-Regulating Control is Simple

PowerConnection

Heating cable End Seal

DistributionPanel

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Ambient Sensing Control

DistributionPanel

Ambient sensingthermostat

MainContactor

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Ambient Sensing Thermostats

AMC-1A AMC-F5

Fixed 40°F setpoint

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DistributionPanel

Line Sensing Control

Line sensingthermostat orDigitrace 910

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Line Sensing Thermostats

AMC-1B AMC-F5

Fixed 40°F setpoint

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• Advantages

– Monitors integrity of heating cable and power distribution wiring

– Readily available equipment

– Low installed cost

• Disadvantages

– Monitors cable integrity, not performance

– Required bell alarm contract on GFPD

Ground-Fault Monitoring

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Monitoring Using GFPD

DistributionPanel

PowerConnection

Heating cable End Seal

GFPD

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DigiTrace 910

• 910 Single point electronic controller (920 Multi-point)

• Approved GFPD replaces t-stat and ground fault breaker

• Compatible with BMS, Networkable

• Provides temperature, current and ground fault monitoring

• Order RTD separately

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Temperature Monitoring

• Advantages

– Measures performance (will it freeze?)

– Provides extensive alarm capability

- Low and high temperature

- High Low Amps

- High Ground fault & Ground Fault trip

– Can be networked to each other & a PC

• Disadvantages

– Expensive to install on each circuit

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Temperature Monitoring w/910

DigiTrace 910

Distribution Panel W/ Standard

Circuit Breaker

RTD

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Control for ElectroMelt and Icestop

• Manual Control (on/off control switched by hand)

• Ambient-sensing control

- AMC-F5, AMC-1A

• Automated Building Management System (on/off control switched by building computer)

• Automatic snow controllers (on/off control based on temperature and moisture)

- Controllers - APS-4 (208-240), APS-4 (277), APS-3B

- Sensors - CIT-1, GIT-1, SIT-1

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Product Offering

APS-4

APS-3B

GIT-1

GIT-3

CIT-1 SIT-5E

RCU-1

LCD-1

SC-40

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DistributionPanel

w/GFPD’s

MainContactor

Manual Control

Simple Switch

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DistributionPanel

w/GFPD’s

MainContactor

Ambient Control

Ambient sensing thermostat

single circuit control

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Building Management System

DistributionPanel

w/GFPD’s

Building Management System

MainContactor

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Automatic Snow Controller

• Automatically turns on system at 38°F with the presence of moisture

• Variable hold-on time after snowfall ends

• Manual override

• In-pavement sensor available

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Automatic Snow Controller

DistributionPanel

w/GFPD’s

APS-3BSnow Controller

MainContactor

CIT-1 pole mounted sensor

SIT-1 pavement mounted sensor

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IceStop Control

DistributionPanel

APS-4Snow Controller

MainContactor

CIT-1 pole mounted sensor

GIT-1 gutter mounted sensors

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Control and Monitoring For RaySol

•Manual or Timed Control

•Floor Temperature Sensing Control

•Floor Temperature Sensing Control and Monitoring

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Manual or Timed Control

DistributionPanel

w/GFPD’s

Simple switchor timed switch

MainContactor

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Floor Temperature Sensing Control

DistributionPanel

w/GFPD’s

MainContactor

FWT-2E Floorstat

FWT-3

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Floor Control and Monitoring

DistributionPanel

w/GFPD’s

MainContactor

DigiTrace 910

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Monitoring and Control for HWAT?

•Self-Regulating control

•Line Sensing Control?

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HWAT Line Sensing Control?

DigiTrace 910Locate sensor on “dead-leg”