EngA C-TRAC2

A C-TRAC2.1 MANUAL
IOM-12 Page 15 March 1999 R1
1. Discharge (first).
2. Room, return, or ambient (second).
3. Current, voltage, or vane position (last).
TE 6100-960 Johnson Controls Set-Point/Sensor Approximate Resistance
SENSOR (purple and blue) Same resistance as TE 6000-960
Set-Point Dialled To
60 degrees 90 degrees
POT
(orange and grey)
2.725 K  3.272 K 
(orange and blue)
3.184 K  2.702 K 
(blue and grey) 970 
OTHER
(purple and orange)
4.19 K  3.71 K 
(purple and grey)
About 1.981 K  (varies with element temp.)
Sensor Resistance Chart for TE 6100-960 and TE 6000-960
°C °F
Resistance 
°C °F
Resistance 
°C °F
Resistance 
-40 -40 602-605 18.3 65 983 48.9 120 1234
-34.4 -30 633 20 68 996 54.4 130 1269
-28.9 -20 665 20.6 69 1000.7 60 140 1333
-23.3 -10 698 21.1 70 1005 65.5 150 1365
-17.8 0 732 23.9 75 1026.5 71.1 160 1437
-12.2 10 768 26.7 80 1048 76.7 170 1491
-8.7 20 804 29.4 85 1070 82.2 180 1546
-1.1 30 842 32.2 90 1092 87.7 190 1602
4.4 40 881 35.6 95 1116 93.3 200 1659
10 50 921 37.8 100 1139 98.8 210 1718
12.8 55 941.5 43.3 110 1186 100 212 1778
Reference resistance is 1035 ohms at 77°F. Resistance tolerances are ±0.05 to 0.15% at 77°F. Temperature range +32 to +104°F. (TE 6100-
960 pot is 53C3, 500R, 7/8 by ¼ shaft.)
NOTE: Engineered Air’s design discharge temperature range is 30 to 140ºF.
Discharge Temperature Calibration Methods
Where the following text calls for a resistor to be substituted into the circuit it must be a 1% tolerance
resistor.
Discharge Calibration Method 1
 Ensure dipswitch 1 is "on".
 Set dipswitches “2, 3, 4”, and “5” to the "off" position. This disables all set-point resets. You are
now in discharge control mode only.
 Ensure no signal (24 VAC) is on the night setback terminal K.
 If there is no heating control connected to C-TRAC2.1 terminals HT and B, place a 10,000-ohm
resistor across them.
 Ensure the C-TRAC2.1 is in the heat mode. If it is the heat light will be on. If the light is not on
disconnect power to the C-TRAC2.1 and reenergize it. This will place it in the heat mode for a
while.