Lennox MERIT Series Installation Instructions Manual page 39

B LO WER DATA
ML296DF090XV60C BLOWER PERFORMANCE (less filter)
BOTTOM RETURN AIR, RETURN AIR FROM BOTH SIDES OR RETURN AIR FROM BOTTOM AND ONE SIDE
0 through 0.8 in. w.g. (Heating) and 0 through 1.0 in. w.g. (Cooling) External Static Pressure Range
"ADJUST"
Switch
Positions
D
+ 1430
NORM
1300
1
— 1195
"ADJUST"
Switch
D
Positions
+ 1175
NORM 1075
1
— 980
Factory default jumper setting.
1
NOTES - The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 80% of the same second stage HEAT speed position.
First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.
Continuous Fan Only speed is approximately 38% of the same second stage COOL speed position.
Lennox HarmonyIII Zoning System Applications - Minimum blower speed is 460 cfm.
TM
ML296DFV Model Speed Adjust
045XV36B
070XV48B
090XV60C
Allowable Circulation Speed
Model Number
All Models
Second Stage "HEAT" Speed - cfm
C B
1
1555 1725
1415 1570
1275 1415
First Stage "HEAT" Speed - cfm
C B
1
1275 1415
1165 1295
1045 1160
Allowable Heating Speeds
Setting "D"
+10%
Norm
-10%
+10%
Norm Allowed
-10%
+10%
Norm
-10%
38%
Second stage Cool Speeed
Factory Setting
Speed Switch Positions
Second Stage "COOL" Speed - cfm
A D
1865 1350
1685 1240
1515 1120
First Stage "COOL" Speed - cfm
A D
1505 985
1375 905
1240 835
Setting "C"
Allowed
Page 39
C B
1550 1755
1445 1635
1290 1455
C B
1130 1280
1035 1180
940 1070
Setting "B" Setting "A"
Allowed
Factory Setting Allowed
Allowed
Factory Setting
Allowed Allowed
Factory Setting
Allowed
A
1
1985
1815
1630
A
1
1440
1315
1195