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9-PIN
CONNECTOR
SECURING
SCREWS
AIR HANDLER
CONTROL
AIR HANDLER CONTROL
L-BRACKET MOUNTING PLATE
19 IN.
(483 MM)
5-1/2 IN.
(140 MM)
SENSOR
(CENTER SIDE-T0 -SIDE)
9-PIN CONNECTOR
ELECTRIC HEAT RELAY
LENNOX CATALOG #
49W91
22V DIRECT CURRENT COIL
30 AMP CONTACT RATING
FASTEN THE PROBE
BRACKET TO THE
PLENUM WITH TWO
SELF-TAPPING SHEET
METAL SCREWS.
CONNECT WIRES TO DISCHARGE AIR SENSOR
TERMINAL ON AIR HANDLER CONTROL.
PLENUM
CBA38MV AIR HANDLER CONTROL
LENNOX CATALOG # 16B27
DISCHARGE SENSOR (DAT)
TEMP RESISTANCE
ºF (OHMS)
30 34,566
40 26,106
50 19,904
60 15,313
70 11,884
80 9,298
90 7,332
100 5,826
DETAIL
A
NOTE - EVENHEAT MODE CANNOT BE ENABLED WITH
HARMONY III
BECAUSE EACH CONTROL IS REQUIRED TO USE
ITS OWN DISCHARGE AIR SENSOR.
THE AIR HANDLER CONTROL (AHC) HAS
TWO SCREW TERMINALS MARKED
DISCHARGE AIR SENSOR. THE SENSOR
IS REQUIRED FOR EVENHEAT
OPERATION AND MUST BE ORDERED
SEPARATELY (CATALOG # 88K38) AND
FIELD-INSTALLED.
DETAIL B
DETAIL C
TEMPERATURE RESISTANCE
CHART
FIGURE 1. Component Connections
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