Lennox 97G2UHV Installation Instructions Manual page 44

Heat Pump
For heat pump operation, clip the jumper wire located below the O terminal on the integrated ignition/blower control board.
In heat pump mode, a call for heat will result in the circulating air blower operating at the selected cooling airflow after a brief
ramp-up period.
W1
CALL
*Percentage of Low Fire CFM
** Percentage of High Fire CFM
*** User-Selected Heat Blower OFF Delay
Figure 68. Indoor Blower Operation - 1st Stage-2nd Stage (W1/W2) Heat Call
W2
W2 - High Heat Demand Present
w2 - High Heat Demand Satisfied
CALL
*Percentage of Low Fire CFM
** Percentage of High Fire CFM
*** User-Selected Heat Blower OFF Delay
Figure 69. Indoor Blower Operation - High Heat (W2)
G
38%*
G - Fan Switch ON
g - Fan Switch OFF
CALL
*Percentage of High Stage Cooling CFM
Figure 70. Indoor Blower Operation - Call for Fan
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W1/W2
100%**
***min
100%*
100%*
w1
w2
***min
100%*
Call
g
w1 w2
***min
W1 - Heat Demand Present
100%*
w1 - Heat Demand Satisfied
W2 - High Heat Demand Present
w2 - High Heat Demand Satisfied
OFF
Y
CALL
OFF
Figure 71. Indoor Blower Operation - Single Stage
Y1
7.5
min.
57%*
CALL Y1 - 1st Stage Cool Demand Present
y1 - 1st Stage Cool Demand Satisfied
OFF
Y2 - 2nd Stage Cooling Demand Present
y2 - 2nd Stage Cooling Demand Satisfied
Figure 72. Indoor Blower Operation - Two Stage
Issue 2332
7.5 minutes
100%*
82%*
Y - Heat Demand Present
y - Heat Demand Satisfied
*Percentage of High Stage Cooling CFM
Cooling
Y1/Y2
Y1 y2
100%*
70%*
70%*
45 sec
38%*
y1
*Percentage of High Stage Cooling
Cooling
y
45
sec
38%
OFF
y1
45 sec
38%*
OFF
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