Appendix A. Flow Diagrams & Wiring Diagrams - Lennox L7742U Programming And Application Manual

Appendix A. Flow Diagrams and Wiring Diagrams
ComfortSenset Model L7742U Thermostat / Humiditrol
RUN EQUIPMENT IN
NORMAL COOLING
MODE
RUN EQUIPMENT IN
NORMAL HEATING
MODE
DEACTIVATE ALL
EQUIPMENT
Figure 16. ComfortSenset Model L7742U Thermostat Operation with Humiditrol
506061−01 06/08
START
Is
there a cooling
YES
demand
?
NO
Is
there a heating
YES
demand
?
NO
Is
there a
dehumidification
NO
demand
?
YES
Is
EITHER true:
ONE OR
outdoor temp. > 95ºF;
BOTH TRUE indoor temp. < 65ºF
?
Page 32
®
EDA Logic Diagram
RUN
HUMIDITROL
MAX
MID
Humiditrol Comfort
Adjust setting is:
NEITHER
MIN
IS TRUE
Is indoor
YES
temperature > 2ºF
above heating set
point
?
NO
Is
indoor temp.
greater than the heat
YES
setpoint plus the cool
setpoint divided by 2?
NO
Is indoor
YES
temp. > 2ºF below
cooling set point
?
NO
®
EDA Enabled