WarmlyYours TempZone FLEX (Twin) Conductor 120V or 240V - Manual (Page 8)

DO NOT SUPPLY THE SYSTEM WITH
ELECTRIC CURRENT
All testing is done with a digital Ohmmeter. Supplying the system with a 120 volt or 240
volt electric current before the installation is complete is not needed to test the system.
Taking the Ohm Readings
The electrical resistance of the Heating Roll(s) must be checked before you start, and
monitored throughout the installation process to ensure there has been no damage
causing shorts or breaks. We recommend at least three readings be taken:
1. Before starting installation.
2. After securing the Heating Roll(s) in place on the subfloor.
3. After installing the flooring surface above the Heating Roll(s).
Record the Ohm Readings
The Value on the UL label should be within +/- 15% variance of the original measurement
indicated on the label. The electrician should carefully mark the initial Ohm reading taken
onto the warranty card. Should the initial Ohm reading be outside the 15% +/- variance,
refer to the electrical trouble shooting section on Page 14, or call Technical Support at
(800) 875-5285.
Go by the Numbers
The Ohm resistance should be measured from the inner core of the yellow (120V), or
red (240V) lead wire at one end, to the inner core of the Black lead wire at the other end.
Make sure that the probe of the Ohmmeter does not touch the tinned sheath wire at either
end. Even your body’s electrical resistance can affect the reading if you touch the meter
poles. Do not hold the wires onto the probes with your fingers. A digital meter is easier to
use and strongly recommended. It is wise to verify that the batteries of the Ohmmeter are
good. Set your Ohmmeter to measure resistance in the range of 0 to 200 Ohms.
On some smaller rolls, it may be necessary to set the ohm meter to the next higher range
of measurment to get an accurate ohm reading.
Three (3) Ohm Readings should be taken for each roll of WarmlyYours TempZone at each
stage of the installation and recorded in the table below.
1) Core to Core - This is the reading between the two inner conductors on the lead wires.
2) Core to Sheath Yellow / Red Lead - This is the reading between the inner core and
the outer ground sheath on the lead wire. This reading should be infinity.
3) Core to Sheath Black Lead - This is the reading between the inner core and the outer
ground sheath on the lead wire at the finish point of the roll. This reading should be
infinity.
After the installation, if necessary, the position of a break can be found with a time domain
reflectometer. Repair kits and guidance are available from the WarmlyYours support line.
Details of how to repair a damaged Heating Element are also available on our web site at
http://www.warmlyyours.com/en-US/support.
7
Testing
Yellow
or Red
Ground Ground
Yellow
or Red Black
Black
Yellow
or Red
Ground Ground
Yellow
or Red Black
Black
Yellow
or Red
Ground Ground
Yellow
or Red Black
Black
Core to Core Core to Sheath Core to Sheath
Catalog Number
Voltage
Usage
Refer to
Instructions
A ground fault
protection device
must be used with
this heating device.
Wattage
Serial Number