Lennox ELITE Series Installation Instructions Manual page 49

TABLE 17
Cooling Mode Blower Speed Ramping
Ramping
A (Factory)
B
C
D
Ramping Option A (Factory Selection)
• Motor runs at 50% for 30 seconds.
• Motor then runs at 82% for approximately 7-1/2
minutes.
• If demand has not been satisfied after 7-1/2 min-
utes, motor runs at 100% until demand is satisfied.
• Once demand is met, motor runs at 50% for 30
seconds then ramps down to stop.
7 1/2 MIN
OFF
82% CFM
1/2 MIN
50% CFM
COMPRESSOR DEMAND
Ramping Option B
• Motor runs at 82% for approximately 7-1/2 minutes.
If demand has not been satisfied after 7-1/2 min-
utes, motor runs at 100% until demand is satisfied.
• Once demand is met, motor ramps down to stop.
7 1/2 MIN
OFF
82%CFM
COMPRESSOR DEMAND
Ramping Option C
• Motor runs at 100% until demand is satisfied.
• Once demand is met, motor runs at 100% for 45
seconds then ramps down to stop.
100% CFM
OFF
COMPRESSOR
DEMAND
Switch 9 Switch 10
Off Off
Off On
On Off
On On
100%
CFM
1/2 MIN
50% CFM
100% CFM
100% CFM
45 SEC.
• Motor runs at 100% until demand is satisfied.
• Once demand is met, motor ramps down to stop.
OFF
Switches 11, 12 and 13 -- Heating Mode Blower Speed
--The switches are factory set to the OFF position which
provides factory default heat speed. Refer to TABLE 18
for switches 11, 12 and 13 that provided the correspond-
ing increases or decrease to both high and low heat de-
mand. See TABLE 26 on page 58 for allowable heating
speeds.
Heat Speed
OFF Increase 24%
Increase 18%
Increase 12%
Increae 6%
Factory
Default
Decrease 6%
Decrease
12%
Decrease
18%
OFF
Switches 14 and 15 -- Continuous Blower Speed --
TABLE 19 provides continuous blower speed adjustments
that will result from different switch settings.
Coninuous Blower Speed
28% of High Cool Speed
38% of High Cool Speed
(Factory Setting)
OFF
Page 49
Ramping Option D
100% CFM
COMPRESSOR
DEMAND
TABLE 18
Heating Mode Blower Speeds
Switch 11 Switch 12
On On
On On
On Off
On Off
Off Off
Off Off
Off On
Off On
TABLE 19
Continuous Blower Speed
Switch 14
Off
Off
OFF
Switch 13
On
Off
On
Off
Off
On
Off
On
Switch 15
On
Off