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INSTALLATION PROCEDURES

3

2.  Make heating cable allowances for valves, flanges, elbows 

and supports as per the applicable drawings and table on 
pages 2 and 3 of these installation procedures. See product 
specifications sheet for heating cable minimum bend radius.

Temporary Installation

Proposed End-of-Circuit 

Location

Proposed Power 

Connection Location

Pipe Support

Cable Allowance for 

In-Line Heat Sinks

Initial Installation . . .

1.  Begin temporary installation at the proposed end-of-circuit 

location and lay out heating circuit on the pipe, allowing ex-
tra cable for the power connection and for any splice loca-
tions. Refer to illustration below for temporary installation.

Installation on Fittings and Equipment . . .

1.  Install heating cable in accordance with illustrations below. 

Secure heating cable to piping using attachment tape. 

2.  Elbows: Locate the cable on the outside radius of an elbow 

to provide sufficient heat to compensate for the added pip-
ing material. Secure the cable to the pipe on each side of 
the elbow with attachment tape.

Attachment Tape

(Typical)

Heating Cable

Pipe Elbow

Pipe Support

Support 

Length

Attachment Tape

(Typical)

Heating Cable

3” Min. 

(8 cm)

3” Min. 

(8 cm)

3.  Pipe Supports: Insulated pipe supports require no additional 

heating cable. For uninsulated supports, allow two times the 
length of the pipe support plus an additional 15” (40 cm) of 
heating cable.

Summary of Contents for FLX Self-Regulating

Page 1: ...FLXTM Self Regulating Winterization Freeze Protection INSTALLATION PROCEDURES ...

Page 2: ... Remove dirt rust and scale with a wire brush and oil and grease films with a suitable solvent Refer to the FLX Cable Testing Report for required recording of test data and circuit information Upon Receiving Cable 1 Uponreceivingheatingcable checktomakesuretheproper type and output have been received All cables are printed ontheouterjacketwithpartnumber voltageratingandwatt output 2 Visually inspe...

Page 3: ... and for any splice loca tions Refer to illustration below for temporary installation Installation on Fittings and Equipment 1 Install heating cable in accordance with illustrations below Secure heating cable to piping using attachment tape 2 Elbows Locate the cable on the outside radius of an elbow to provide sufficient heat to compensate for the added pip ing material Secure the cable to the pip...

Page 4: ...le Attachment Tape Typical Pipe Size Valve Type Screwed Flanged Welded Pump Type Screwed Flanged 6 1 0 1 2 9 1 6 0 1 6 3 1 1 2 1 2 4 1 1 6 2 1 3 4 6 1 1 6 2 6 1 6 3 5 2 2 2 6 2 4 5 6 3 2 6 3 6 2 6 5 7 4 4 5 3 8 10 6 7 8 3 6 14 16 8 9 6 11 4 19 22 10 12 6 14 4 25 28 12 15 16 6 5 30 33 14 18 19 6 5 6 36 39 16 21 6 23 6 43 46 18 25 6 27 6 6 51 54 20 28 6 30 7 57 60 24 34 36 8 68 72 30 40 42 10 80 84 ...

Page 5: ...dc The mini mum acceptable level for the megger reading for any polymer insulated heat tracing cable is 20 megohms Record 2 on Cable Testing Report Heating Cable vs Sensor Location Temperature Control 1 Whenalinesensingcontrollerisspecified thesensorshould be placed at least 90 around the circumference from the heating cable or at least 2 5 cm from the cable Tape Length Pipe Diameter in Inches 1 1...

Page 6: ...n cannot be overemphasized Without insulation heat losses are generally too high to be offset by a conven tional heat tracing system 2 In addition to piping and in line equipment such as pumps and valves all heat sinks must be properly insulated This includes pipe supports hangers flanges and in most cases valve bonnets 3 Regardless of the type or thickness of insulation used a protective barrier ...

Page 7: ...al damage between the braid and the heating element small cuts or scuffmarks on the outer jacket will not affect the megger reading unless there was actual penetration through the braid and dielectric insulation jacket 4 Once the installation is complete but prior to installation of thermal insulation recheck the heating cable with at least a 500 Vdc megohmmeter megger between the heating cable bu...

Page 8: ...Date Witnessed By Date Record 2 After Installation Insulation Resistance M Ohms Tested By Date Witnessed By Date Record 3 After Thermal Insulation is Installed Insulation Resistance M Ohms Tested By Date Witnessed By Date Record 4 Final Commissioning Panel Number Breaker Number Volts Ambient Temperature deg F Recorded Amps Tested By Date Witnessed By Date FLX Cable Testing Report ...

Page 9: ... 396 5801 Facsimile 512 396 3627 800 820 HEAT www thermon com In Canada call 800 563 8461 Other Products Thermonoffersadditionalcut to lengthcablesor complete turn key systems for the following applications Hot Water Temperature Maintenance Freezer Floor Frost Heave Prevention Tank and Hopper Heating Instrument Tubing Bundles Control and Monitoring Systems ...

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