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OT & ST Sensor Reconnection
1. A plug-in terminal block is provided for wiring convenience.
2. Both red wires are terminated in the same single screw (+), and both white or green wires are
terminated in the single common screw (COM). Each appropriate black wire is terminated in the
appropriate OT and ST screw.
WARNING - If the black and red sensor wires are crossed or incorrectly installed at the terminal
block and power is turned on, burnout damage can result within the sensor probe
Spacing between
bottom of A-coil and
top of Electro-Mate
11/01/2007
Furnace
Downflow Only
A-Coil
1.0" MIN.
ELECTRO-MATE
14"-18"
DUCT
Dist.
SENSOR (ST)
Duct
5
Hi-limit sensor tube
located below
element in heated
Dist.
Duct
Rev.C 04-27-04
EI708-03
HI320
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