Infloor Standard Electric Cable - Manual (Page 6)

6
Infloor Installation Manual
IMPORTANT! To retain the Limited Warranty, the following measurements
must be recorded, and all steps of this manual followed .
STEP 3.3 Use a digital multi-meter set to the 200
Ω or 2000Ω (2kΩ) range
to measure the resistance between the black and white wires of the cable
power leads (or black and blue wires for 240 VAC). Record these resistances
in Table 4 under “Out of the box before installation” . The resistance should
measure within the resistance range on the nameplate label . If it is a little
high or low, it may be due to air temperatures or meter calibration . Consult
the factory if in doubt .
Measure the resistance between either of the white or black leads and
ground lead . This measurement should be “open”, usually indicated by an
“OL” or a “I” . This is the same as displayed when the test leads are not touch-
ing anything .
If there is any change in the reading, record this information and contact
the factory before continuing . This could indicate damage, test lead prob-
lems, or a number of other issues . Try “pinning” the test leads to the cable
lead wires against a hard non-metal surface if the readings continue to
fluctuate .
Change the meter to the 20,000 ohms (20 k
Ω) range . Measure between
the lead wires of the Infloor control sensor . This resistance varies according
to the temperature sensed . Table 3 provides approximate resistance-to-
temperature values for reference .
Table 3:
:
Floor Sensor Resistance Values
Temperature Typical Values
55°F (13°C) 17,000 ohms
65°F (18°C) 13,000 ohms
75°F (24°C) 10,000 ohms
85°F (29°C) 8,000 ohms
CABLE 1 CABLE 2 CABLE 3
Cable serial number
Cable model
Cable voltage
Factory cable resistance range
OUT OF THE BOX BEFORE INSTALLATION (ohms)
Cable black to white (black to blue for 240VAC)
Cable black to ground
Cable white to ground (blue to ground for 240VAC)
Sensor wire
AFTER CABLE AND SENSOR ARE FASTENED TO FLOOR (ohms)
Cable black to white (black to blue for 240VAC)
Cable black to ground
Cable white to ground (blue to ground for 240VAC)
Sensor wire
AFTER FLOOR COVERINGS ARE INSTALLED (ohms)
Cable black to white (black to blue for 240VAC)
Cable black to ground
Cable white to ground (blue to ground for 240VAC)
Sensor wire
RETAIN THIS LOG TO RETAIN THE WARRANTY! DO NOT DISCARD!
Table 4: Cable and Sensor Resistance Log
Press the test lead tips to the Black and
White (or Blue for 240 VAC) power lead
wires. This reading should correspond to
the factory resistance range on the name-
plate label attached to the Power lead.
Readings between the Black and Ground
and the White (or Blue for 240 VAC) and
Ground power lead wires should measure
“open”, or “O.L”, or the same as displayed
when the test leads are not touching
anything.
Black Lead
White or Blue Lead
Ground Lead
Black Lead
200 ohm setting
Black wire to COM
Red wire to Ω
White or Blue Lead Ground Lead
Black Lead
White or Blue Lead Ground Lead