Ingersoll-Rand ReliaTel, Manual, Page: 105 / 176

RT-SVD03L-EN 105
High Temperature Sensor Diagram
High Temperature Sensor
The high temperature sensor accessory
(BAYFRST001*) provides high limit cutout with manual
reset in ICS device Tracer
® / Tracker ® /ComforTrac ™ /
VariTrac ® systems. The sensors are wired to the LTB5
and LTB6 in the control panel. Jumper must be
removed.
The sensors may be used to detect excessive heat in air
conditioning or ventilation ducts and provide system
shut down. Immediately after sensor opens, the
associated unit will completely shut down. The sensors
come with case and cover, and mount directly to the
ductwork. There are two sensors that are included in
the accessory. Both sensors are factory set; one opens
at 135° F and should be installed in the return air duct,
the other opens at 240° F and should be installed in the
supply duct.
Figure 64. High temperature sensor diagram
Sensing Element
Manual Reset Button
Component Description
BAYFRST001A
Part Number
CNT-0637 & CNT-0638
24 VAC
TEST 1 TEST 2
Compressor 1 disable
Compressor 2 disable
Immediate shutdown
Automatic reset
Supply Sensor
240° F
Return Sensor
135° F
1
2
3
4
5
6
N No otte e:: This accessory can also be applied in non-ICS applications. The wiring on the unit is the same. The unit will shut
down immediately when the sensor opens.
To reset a sensor which has opened, push and release
the button protruding through the cover. See reset
button. The sensor temperature must drop 25° F below.
To reset a sensor which has opened, push and release
the button protruding through the cover. See reset
button. The sensor temperature must drop 25°F. There are no field adjustments that can be made to the
sensor; if a problem exists, the sensor must be
replaced.
• Part Number “CNT-0637” = 135° F sensor
• Part Number “CNT-0638” = 240° F sensor