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nVent reserves the right to change specifications without notice.
Raychem-IM-H54789-H908-EN-1805

nVent.com

PN 048227-000

Asia Pacific

Tel +86.21.2412.1688

Fax  +86.21.5426.3167

cn.thermal.info@nvent.com

Latin America

Tel +1.713.868.4800

Fax  +1.713.868.2333

thermal.info@nvent.com

Europe, Middle East, Africa

Tel +32.16.213.511

Fax  +32.16.213.604

thermal.info@nvent.com

North America 

Tel +1.800.545.6258

Fax  +1.800.527.5703

thermal.info@nvent.com

LIMITED WARRANTY

nVent warrants all RAYCHEM wholesale distribution self-regulating 

heating cables and components against faulty workmanship 

and use of defective materials for two (2) years from the date 

of purchase. This warranty can be amended only by a written 

instrument signed by a duly authorized officer of nVent. Buyer's 

exclusive remedy under this warranty shall be to have nVent, within 

a reasonable time, repair such goods or supply replacement goods 

or credit Buyer's account for such goods and accept their return 

whichever nVent may elect at its sole discretion. nVent shall in 

no event be liable for the cost of removal or installation, for loss 

or damage to or loss of use of facilities or other property, loss of 

revenue, loss of use of revenue, loss of anticipated profits, or other 

damages or costs of any kind whatsoever, whether direct, indirect, 

incidental, or consequential.
Notwithstanding the foregoing, nVent shall have no liability 

whatsoever unless: (a) Buyer promptly notifies nVent in writing 

after discovery of an alleged nonconformity and includes a detailed 

explanation of the alleged nonconformity; (b) Buyer promptly returns 

the goods to nVent postage prepaid, at the address obtained by 

calling Customer Service at 1-800-545-6258 or 650-216-1526; 

and (c) nVent' examination of such goods establishes to nVent' 

satisfaction that such alleged nonconformities actually exist 

and occurred in the cause of proper and normal use and were 

not caused by accident, misuse, neglect, alteration or improper 

installation, repair or testing or such other cause outside of the 

responsibility of nVent under this Limited Warranty.

THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER 

REPRESENTATIONS, WARRANTIES, OR CONDITIONS,  

EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION  

ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS  

FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT, AND  

OF ANY OTHER OBLIGATION OR LIABILITY ON THE PART OF 

NVENT, WHETHER BY STATUTE, CONTRACT, STRICT LIABILITY, 

TORT OR OTHERWISE.
If the goods are a consumer product in buyer’s jurisdiction, 

the above exclusion or limitation of incidental or consequential 

damages and the above disclaimer of implied warranties may not 

apply. The term of any such implied warranty is limited to the term 

of this two-year Limited Warranty. Some jurisdictions do not allow 

limitations on how long an implied warranty lasts, so the above 

limitation may not apply. This warranty gives consumers specific 

legal rights, and consumers may also  

have other rights, which vary by jurisdiction.

Summary of Contents for RAYCHEM H908

Page 1: ...he black heating cable core is conductive and can short It must be properly insulated and kept dry Keep components and heating cable ends dry before and during installation Damaged bus wires can overheat or short Do not break braid or bus wire strands when scoring the jacket or core Bus wires will short if they contact each other Keep bus wires separated Heat damaged components can short Use a hea...

Page 2: ...1 o clock or 1 o clock position and at the 4 o clock and 8 o clock positions Example 1 Pipe size 1 in Lowest air temp 0 F Insulation thickness 1 2 in Metal pipe WinterGard H311 Plastic pipe WinterGard Plus H611 H621 WinterGard Wet H612 H622 Example 2 Pipe size 2 1 2 in Lowest air temp 20 F Insulation thickness 1 2 in Metal pipe 1 3 WinterGard Plus H611 or WinterGard Wet H612 Use 1 3 feet of heatin...

Page 3: ...before connection 3 Position and attach heating cable to pipe Be sure all piping to be traced is dry Install heating cable using straight tracing spiraling or multiple tracing according to the Heating cable selection and design section on page 2 For straight tracing install the heating cable on a lower half of the pipe for example in the 4 o clock or 8 o clock position Be sure to install the addit...

Page 4: ...ms inspect heating cables for signs of damage and verify the components are correctly installed If physical damage is found the entire damaged section must be removed and a new section of heating cable spliced in using only approved H910 splice kits If physical damage cannot be found the complete circuit should be removed and replaced with new heating cable To verify the ground fault circuit is fu...

Page 5: ... gutter and downspout The cable running in the gutter should remain against the bottom of the gutter Extend the top of each heating cable loop beyond where the wall joins the roof nVent recommends 2 foot clip spacing along the roof edge See the Heating cable design section Table 5 for spacing and layout information Use WinterGard H913 H914 roof clips to attach heating cable to the roof surface One...

Page 6: ...If physical damage is found the entire damaged section must be removed and a new section of heating cable spliced in using only approved H910 splice kits If physical damage cannot be found the complete circuit should be removed and replaced with new heating cable To verify the ground fault circuit is functioning test the H908 before each use Push in the test button The indicator light must turn of...

Page 7: ...atherproofed outlet approved for wet locations H913 H914 Roof clip H910 Tee End seal Clamp ties two places Clamp ties two places Power connection splice included with the H908 H908 Ground fault equipment protection device Weatherproofed outlet approved for wet locations Drip loops Drip loop Drip loop Note In all locations route and secure cable to avoid possible mechanical damage such as from ladd...

Page 8: ...nd wire Plug in cord 3 in Note Instructions generally show heating cable with braid and outer jacket Cables with no outer jacket look slightly different from those illustrated H908 POWER CONNECTION KIT Identify heating cable Stripped end of ground fault protection device 5 in tube 8 in tube 2 3 4 in 1 2A For all heating cables For H311 and H611 heating cables only Slide 8 inch tube and 5 inch tube...

Page 9: ...cket Score between bus wires at inner jacket Bend core to break free at inner jacket Peel core and any remaining material from bus wires Notch core at the end Twist back and peel bus wires from core Slide 1 8 inch x 1 inch shrink tubes over bus wires To shrink tubing move heat source continuously from side to side While shrinking ensure that tubes remain up against black core Trim bus wires For H6...

Page 10: ...e black wire Finish bus wire preparation Apply 5 inch shrink tube Connect bus wires Apply mastic to bus wires Trim bus wires Squeeze the mastic together Center the 5 inch heat shrinkable tube over the splice Make sure tube extends over the end of each heating cable and the cord Shrink the tube completely Start at the middle and work toward each end Keep heating after tube has shrunk to melt mastic...

Page 11: ...ect braid to ground wire Wrap black cloth tape evenly around crimp and splice Cover crimp completely Center the 8 inch heat shrinkable tube over the splice Make sure that the tube extends over the end of the heating cable and cord Shrink the tube completely Start at the middle and work toward each end Keep heating after tube has shrunk to melt adhesive inside tube Total heating time should be abou...

Page 12: ... braid Firmly push end seal onto the cable at least 11 2 inches Some gel may ooze out Do not twist or try to remove the end seal during or after insertion Do not reuse an end seal Firmly push end seal onto the cable at least 11 2 inches Some gel may ooze out Do not twist or try to remove the end seal during or after insertion Do not reuse an end seal Cleanly cut off the end of the cable Push the b...

Page 13: ...pproved for wet locations Make sure that Cord label is readily visible Indicator light on the ground fault equipment protection device is on Receptacle is properly weatherproofed Ground fault equipment protection device and power connection splice will not be submerged For pipe freeze protection For pipe freeze protection For roof and gutter de icing For roof and gutter de icing Plug the heating c...

Page 14: ...ect incidental or consequential Notwithstanding the foregoing nVent shall have no liability whatsoever unless a Buyer promptly notifies nVent in writing after discovery of an alleged nonconformity and includes a detailed explanation of the alleged nonconformity b Buyer promptly returns the goods to nVent postage prepaid at the address obtained by calling Customer Service at 1 800 545 6258 or 650 2...

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