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SECTION 4. Inspection and Testing
Installation & Owner’s Guide 11
A visual and electrical check must be performed on the heating mats prior to activation. The heating test may
berequired by the laminate manufacturer based on the type of sub-floor being used (i.e. concrete). Always check
with your laminate manufacturer for any restrictions and/or requirements that they have concerning the use of
their product in conjunction with floor warming systems.
Visual Inspection
Also perform a visual check to look for any signs of damage to the mat or electrical leads that may have occurred
during installation. When visually checking the mats, look for any signs of damage, wear, or scratching that might
have occurred during installation. If any portion of a mat appears damaged, replace the entire mat. If damage is
found, call 1-888 WARM PAD for advice and/or replacement assistance.
Electrical Test
A resistance check across the supply leads of each mat using a digital ohm meter must be made to detect any
short or open circuits. Please refer to the charts on page 12 under the section of low resistance limits and high
resistance limits.
If the resistance check is between the low and high resistance limits shown on page 12, the system is connected
properly and no further testing is required. If the resistance is LOWER than the indicated low resistance limits on
page 12, contact 1-888-WARM PAD.
If the resistance is HIGHER than the indicated high resistance limits on page 12, this indicates a damaged mat.
Inspect all wiring for damage or loose connections and retest. If the resistance reading is ZERO, this indicates a
short circuit. Check the path that the wiring is taking and make sure that no wires are pierced or otherwise dam-
aged. Mats with damaged non heating leads must be replaced.
If the element or film has been cut to shorten the length, to calculate the new resistance, follow the
instructions below:
• 18 inch wide film - Each heating bar or stripe =0.86 Watts. Multiply the number of heating bars or stripes of
the newly shortened mat by 0.86 and this will equal the total wattage of the mat.
• 36 inch wide film - Each heating bar or stripe =1.75 Watts. Multiply the number of heating bars or stripes of
the newly shortened mat by 1.75 and this will equal the total wattage of the mat.
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