Lennox ComfortSense 7500 Installation And Setup Manual page 15

WHEN 2-STAGE HEAT IS USED, THERMOSTAT IS
CONFIGURED FOR MULIT-STAGE HEAT, CONNECT
THERMOSTAT W2 TO AIR HANDLER W2 AND
REMOVE JUMPER BETWEEN R AND W2.
CUT ON-BOARD LINK FORM DS-TO-R (W914
CLIPPABLE CONNECTION ON FURNACE / JUMPER
ON AIR HANDLER) WHEN DEHUMIDIFICAITON OR
HARMONY CONTROL IS USED.
DO NOT CUT -ON-BOARD LINK FORM R-TO-O (W951
CLIPPABLE CONNECTION ON FURNACE / JUMPER
ON AIR HANDLER) WHEN IT IS USED FOR
CONDENSING UNIT APPLICATIONS.
CUT ON-BOARD LINK FROM R-TO-O (W951
CLIPPABLE CONNECTION ON FURNACE / JUMPER
ON AIR HANDLER).
REMOVE DS-TO-Y1 JUMPER WHEN
DEHUMIDIFICAITON D TERMINAL IS USED.
OUTDOOR SENSOR FOR OUTDOOR TEMP
DISPLOAY, OPTIONAL HUMIDIFIER DEW POINT
CONTROL, HEAT PUMP BALANCE POINTS AND
DUAL-FUEL BALANCE POINTS.
Figure 6. Key for Figures 7 through 11.
CBX25UH AND CBX25UHV DO NOT HAVE TERMINAL
STRIPS IN UNIT.
FOR HUMIDIFIER, 48G95 OR EQUIVALENT
ISOLATION RELAY REQUIRED - 24VAC, 5VA MAX
CAN BE USED WITH ALL THERMOSTAT
APPLICATIONS.
FOR 2-STAGE CUT ON-BOARD LINK FROM Y1-TO-Y2
(W915 CLIPPABLE CONNECTION ON FURNACE /
JUMPER ON AIR HANDLER).
K183 DEHUMIDIFICATION RELAY KIT (26W62)
REQUIRED WHEN USING D-TO-DS TERMINALS
WITH CBX27 UNITS.
NOTE: NOT ALL UNUSED TERMINALS ARE SHOWN
ON THE THERMOSTAT DIAGRAMS.
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