control & monitoring. 2 control and monitoring for the commercial construction industry fwt-3
Post on 14-Dec-2015
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3
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
4
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
5
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
6
Options for XL-Trace
•Self-Regulating
•Ambient sensing control
– Ambient sensing thermostats
•Line sensing control
– Line sensing thermostats
•Monitoring & Control with DigiTrace 910
12
• 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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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
15
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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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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DistributionPanel
w/GFPD’s
MainContactor
Ambient Control
Ambient sensing thermostat
single circuit control
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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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Floor Temperature Sensing Control
DistributionPanel
w/GFPD’s
MainContactor
FWT-2E Floorstat
FWT-3
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