Lennox ComfortSense 7500 Commercial - Start-Up Sequence Overview; Humiditrol EDA Operation Flowchart

28
Start-Up Sequence of Operations
MIN
MID
MAX
YES
NO
YES
NO
Is indoor
temp. < 2ºF below
cooling set point
?
Is
indoor temp.
greater than the heat
setpoint plus the cool
setpoint divided by 2?
Is indoor
temperature > 2ºF
above heating set
point
?
YES
YES
NO
NO
NO
NO
YES
ONE OR BOTH
TRUE
NEITHER
IS TRUE
Is
there a cooling
demand
?
Is
there a
dehumidification
demand
?
DEACTIVATE ALL
EQUIPMENT
RUN EQUIPMENT
IN NORMAL HEAT
ING MODE
RUN EQUIPMENT
IN NORMAL COOL
ING MODE
Is
EITHER true:
outdoor temp. > 95ºF;
indoor temp. < 65ºF
?
Humiditrol Com
fort Adjust setting
is:
RUN
HUMIDITROL
START
Is
there a heating
demand
?
YES
Figure 15. Thermostat Operation with Humiditrol
®
EDA Enabled