Lennox G61MPV Series User manual

Page 1 ©2003 Lennox Industries Inc.
Corp. 0310−L7
G61MPV
Service Literature Revised 03−2008
G61MPV SERIES UNITS
G61MPV series units are high−efficiency multi−position
(upflow, downflow, horizontal right and left) gas furnaces
manufactured with Lennox Duralok Plustheat exchang-
ers formed of an aluminized steel primary with a stainless
steel secondary condensing coil. G61MPV units are avail-
able in heating capacities of 44,000 to 132,000 Btuh
(13.0.0 to 38.6 kW) and cooling applications from 2 to 5
tons (7.0 kW to 17.5 kW). Refer to Engineering Handbook
for proper sizing.
Units are factory equipped for use with natural gas. Kits are
available for conversion to LPG operation. G61MPV model
units are equipped with the two−stage variable speed inte-
grated SureLight® control. All G61MPV units meet the Cali-
fornia Nitrogen Oxides (NOx) Standards and California Sea-
sonal Efficiency requirements. All units use a redundant gas
valve to assure safety shut−off as required by C.S.A.
All specifications in this manual are subject to change. Pro-
cedures outlined in this manual are presented as a recom-
mendation only and do not supersede or replace local or
state codes. In the absence of local or state codes, the
guidelines and procedures outlined in this manual (except
where noted) are recommendations only and do not consti-
tute code.
TABLE OF CONTENTS
Specifications Page 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Data Page 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Identification Page 23. . . . . . . . . . . . . . . . . . . . . . . .
I Unit Components Page 24. . . . . . . . . . . . . . . . . . . . . . .
II Installation Page 47. . . . . . . . . . . . . . . . . . . . . . . . . . . .
III Start Up Page 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IV Heating System Service Checks Page 62. . . . . . . . .
V Typical Operating Characteristics Page 67. . . . . . . . .
VI Maintenance Page 68. . . . . . . . . . . . . . . . . . . . . . . . . .
VII Wiring and Sequence of Operation Page 71. . . . . .
VIII Field Wiring and Jumper Setting Page 86. . . . . . . .
IX Control Board Troubleshooting Page 91. . . . . . . . . .
IMPORTANT
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a qualified installer, service agency
or the gas supplier.
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at discon-
nect switch(es). Unit may have multiple
power supplies.
WARNING
Sharp edges.
Be careful when servicing unit to avoid sharp edges
which may result in personal injury.

Page 2
SPECIFICATIONS
Gas
Heating
Performance
ModelNo. G61MPV
−36B−045
G61MPV
−36B−070
G61MPV
−36B−071
G61MPV
−36C−090
g
Performance High Fire Input− Btuh 44,000 66,000 66,000 88,000
g
Output− Btuh 39,000 61,000 62,000 79,000
Temperature rise range − _F20 − 50 45 − 75 45 − 75 70 − 100
Gas Manifold Pressure (in. w.g.)
Natural Gas / LPG/Propane
3.5 / 10.0 3.5 / 10.0 3.5 / 10.0 3.5 / 10.0
Low Fire Input − Btuh 30,000 45,000 45,000 60,000
Output − Btuh 29,000 43,000 43,000 56,000
Temperature rise range − _F10 − 40 25 − 55 20 − 50 35 − 65
Gas Manifold Pressure (in. w.g.)
Natural Gas / LPG/Propane
1.7 / 4.9 1.7 / 4.9 1.7 / 4.9 1.7 / 4.9
1AFUE 94.1% 94.1% 95.0% 94.3%
Highstatic(CSA)− in.w.g. .80 .80 .80 .80
Connections
i
Intake / Exhaust Pipe (PVC) 2 / 2 2 / 2 2 / 2 2 / 2
in. Condensate Drain Trap (PVC pipe) − i.d. 1/2 1/2 1/2 1/2
with field supplied (PVC coupling) − o.d. 3/4 3/4 3/4 3/4
hose with hose clamp − i.d. x o.d. 1−1/4 x 1 1−1/4 x 1 1−1/4 x 1 1−1/4 x 1
GaspipesizeIPS 1/2 1/2 1/2 1/2
Indoor
Blower
Wheelnominaldiameter xwidth −in. 10 x 8 10 x 8 10 x 8 10 x 10
Blower Motoroutput − hp 1/2 1/2 1/2 1/2
Tons(kW) ofadd−oncooling 2 − 3 2 − 3.5 2 − 3.5 2 − 3.5
Air volume range − cfm 610 − 1420 625 − 1395 625 − 1395 600 − 1395
ShippingData lbs. − 1 package 128 151 151 170
Electricalcharacteristics 120 volts − 60 hertz − 1 phase (less than 12 amps)
NOTE − Filters and provisions for mounting are not furnished and must be field provided.
1Annual Fuel Utilization Efficiency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non−weatherized furnaces.
Gas
Heating
Performance
ModelNo. G61MPV
−60C−090
G61MPV
−60C−091
G61MPV
−60C−110
G61MPV
−60C−111
G61MPV
−60D−135
g
Performance High Fire Input− Btuh 88,000 88,000 110,000 110,000 132,000
g
Output− Btuh 81,000 84,000 99,000 103,000 122,000
Temperature rise range − _F 40 − 70 40 − 70 50 − 80 50 − 80 65 − 95
Gas Manifold Pressure (in. w.g.)
Natural Gas / LPG/Propane
3.5 / 10.0 3.5 / 10.0 3.5 / 10.0 3.5 / 10.0 3.5 / 10.0
Low Fire Input− Btuh 60,000 60,000 75,000 75,000 90,000
Output− Btuh 57,000 58,000 72,000 72,000 87,000
Temperature rise range − _F 20 − 50 20 − 50 30 − 60 25 − 55 40 − 70
Gas Manifold Pressure (in. w.g.)
Natural Gas / LPG/Propane
1.7 / 4.9 1.7 / 4.9 1.7 / 4.9 1.7 / 4.9 1.7 / 4.9
1AFUE 94.6% 95.0% 94.3% 95.0% 94.6%
Highstatic(CSA)− in.w.g. .80 .80 .80 .80 .80
Connections
i
Intake / Exhaust Pipe (PVC) 2 / 2 2 / 2 2 / 2 2 / 2 3 / 3
in. Condensate Drain Trap (PVC pipe) − i.d. 1/2 1/2 1/2 1/2 1/2
with field supplied (PVC coupling) − o.d. 3/4 3/4 3/4 3/4 3/4
hose with hose clamp − i.d. x o.d. 1−1/4 x 1 1−1/4 x 1 1−1/4 x 1 1−1/4 x 1 1−1/4 x 1
GaspipesizeIPS 1/2 1/2 1/2 1/2 1/2
Indoor
Blower
Wheelnominaldiameter xwidth −in. 11−1/2 x 10 11−1/2 x 10 11−1/2 x 10 11−1/2 x 10 11−1/2 x 10
Blower Motoroutput − hp 1 1 1 1 1
Tons(kW) ofadd−oncooling 3.5 − 5 3.5 − 5 3.5 − 5 3.5 − 5 3.5 − 5
Air volume range − cfm 895 − 2215 895 − 2215 740 − 2210 740 − 2210 915 − 2190
ShippingData lbs. − 1 package 180 180 188 188 207
Electricalcharacteristics 120 volts − 60 hertz − 1 phase (less than 12 amps)
NOTE − Filters and provisions for mounting are not furnished and must be field provided.
1Annual Fuel Utilization Efficiency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non−weatherized furnaces.

Page 3
OPTIONAL ACCESSORIES − MUST BE ORDERED EXTRA
B" Width Models C" Width Models D" Width Models
FILTER KITS
1Air Filter and
R k Kit
Horizontal (end) Size of filter − in. 87L96 − 18 x 25 x 1 87L97 − 20 x 25 x 1 87L98 − 25 x 25 x 1
Rack Kit Side Return Single 44J22 44J22 44J22
Ten Pack 66K63 66K63 66K63
Size of filter − in. 16 x 25 x 1 16 x 25 x 1 16 x 25 x 1
EZ Filter Base Catalog No. − Ship. Wt. − lbs. 73P56 − 7 73P57 − 8 73P58 − 10
Size of field provided filter − in. 16 x 25 x 1 20 x 25 x 1 24 x 24 x 1
CABINET ACCESSORIES
Down−Flow Additive Base 11M60 11M61 11M62
Horizontal Support Frame Kit 56J18 56J18 56J18
Return Air Base 98M60 98M58 98M59
CONDENSATE DRAIN KITS
Condensate Drain Heat Cable 6 ft. 26K68 26K68 26K68
24 ft. 26K69 26K69 26K69
50 ft. 26K70 26K70 26K70
Heat Cable Tape Fiberglass − 1/2 in. x 66 ft. 39G04 39G04 39G04
p
Aluminum foil − 2 in. x 60 ft. 39G03 39G03 39G03
Condensate Trap Alternate Location Kit − Up−Flow Only 76M20 76M20 76M20
CONTROLS
SignatureStattHome Comfort Control 81M27 81M27 81M27
TERMINATION KITS − See Installation Instructions for specific venting information.
2Termination
Kit
Concentric 2 in. 71M80 69M29 − − −
Kits
Direct Vent
3 in. − − − 60L46 60L46
Di
rec
t
V
en
t
Applications Wall − Close Couple 2 in. 22G44 − − − − − −
Applications
Only
p
3 in. 44J40 44J40 44J40
Close Couple WTK 2 in. 30G28 − − − − − −
3 in. 81J20 81J20 81J20
2Termination
Kits − Direct or
Roof 2 in. 15F75 15F75 −−−
Kit
s −
Di
rec
t
or
Non−Direct Vent Wall − Wall Ring Kit 2 in. 15F74 15F74 315F74
2Roof Termination Flashing Kit − Direct or Non−Direct
Vent − Contains two flashings.
44J41 44J41 44J41
1Cleanable polyurethane frame type filter.
2Kits contain enough parts for two, non−direct vent installations.
3Non−direct vent only.
GAS HEAT ACCESSORIES
Input
High Altitude
Orifice Kit
Natural Gas
Only
High Altitude Pressure Switch Kit
ORDER TWO EACH LPG/Propane Kit LPG/Propane to Natural Gas Kit
7501−10,000 ft. 2001−4500 ft. 4501−7500 ft. 7501−10,000 ft. 0−7500 ft. 7501−10,000 ft. 0−7500 ft. 17501−10,000 ft.
−045 59M17 − − − − − − − − − 59M13 59M14 59M87 59M87
−070 59M17 − − − − − − 56M23 59M13 59M14 59M87 59M87
−071 59M17 75M22 75M22 56M21 59M13 59M14 59M87 59M87
−090 59M17 − − − 75M22 56M21 59M13 59M14 59M87 59M87
−090
(036C−9
and
later
models)
59M17 − − − 24W51 24W49 59M13 59M14 59M87 59M87
−091 47M82 26W85 26W85 26W86 59M13 59M14 59M87 59M87
−110 59M17 − − − 56M23 75M22 59M13 59M14 59M87 59M87
−111 47M82 56M22 56M22 56M23 59M13 59M14 59M87 59M87
−135 59M17 − − − 56M93 56M93 59M13 59M14 59M87 59M87
1High Altitude Orifice Kit is required and must be ordered separately for applications from 7501 to 10,000 ft.

Page 4
BLOWER DATA
BLOWER DATA
G61MPV−36B−045 BLOWER PERFORMANCE (less filter)
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 915 1070 1320 1370 1055 1235 1330 1420
1NORM 830 965 1205 1255 945 1100 1185 1295
740 860 1055 1095 840 970 1050 1150
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 830 970 1210 1255 720 820 890 970
1NORM 755 880 1080 1120 665 745 795 875
690 795 950 995 610 685 725 785
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 442 cfm.
G61MPV−36B−045 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 70 90 115 135 155 175 200 220 245 95 120 145 175 190 210 230 255 280
Speed Tap 2 125 145 165 185 205 225 255 280 305 155 175 200 225 255 290 310 335 360
Tap 3 220 250 280 310 340 365 390 415 440 305 335 370 400 435 465 480 495 510
Tap 4 225 260 300 345 375 410 430 450 470 330 360 395 430 460 485 510 530 550
COOL"
Sd
Tap 1 55 70 90 110 125 140 160 175 195 140 165 200 230 255 280 305 325 350
Speed Tap 2 70 90 110 130 155 175 200 220 240 230 260 295 330 360 390 415 435 460
Tap 3 90 110 135 160 185 205 225 245 265 280 315 350 390 430 465 485 505 525
Tap 4 115 135 160 185 210 235 255 280 300 370 410 450 490 520 555 560 565 570
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 65 80 95 110 135 155 170 190 210 80 95 115 135 155 175 200 220 240
Speed Tap 2 85 105 125 150 175 195 220 245 270 110 135 160 185 210 230 255 275 295
Tap 3 150 175 205 230 265 295 320 345 365 205 230 260 295 330 370 390 415 440
Tap 4 165 195 230 265 290 315 340 370 400 240 270 310 345 370 395 425 455 485
COOL"
Speed
Tap 1 45 60 75 95 115 130 145 160 175 110 130 155 185 205 230 250 275 295
Speed Tap 2 60 80 100 115 135 155 175 195 215 165 190 215 240 275 305 330 355 380
Tap 3 70 85 110 130 150 165 190 210 230 195 225 260 290 320 350 375 400 425
Tap 4 85 105 135 160 175 190 215 240 265 265 300 340 380 410 440 460 485 505
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 50 65 85 100 120 140 155 170 185 55 70 90 110 135 155 170 190 205
Speed Tap 2 70 90 105 125 145 165 185 205 230 85 100 125 145 175 200 220 235 250
Tap 3 110 130 155 185 205 225 250 270 290 150 170 195 220 240 265 295 320 350
Tap 4 125 145 170 200 220 240 265 295 320 160 185 215 245 265 290 315 335 360
COOL"
Speed
Tap 1 40 55 70 85 100 120 130 145 160 80 95 115 135 160 185 205 230 255
Speed Tap 2 55 65 80 95 115 135 150 165 185 115 140 170 195 215 235 260 280 300
Tap 3 55 70 90 105 125 145 160 180 195 140 165 195 225 250 270 295 320 345
Tap 4 75 90 105 125 140 155 180 200 225 180 205 235 265 295 325 355 380 410

Page 5
BLOWER DATA
G61MPV−36B−070 BLOWER PERFORMANCE (less filter)
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 895 1025 1290 1340 1015 1190 1280 1395
1NORM 820 940 1155 1210 930 1065 1155 1270
N/A 840 1020 1055 830 950 1010 1105
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 820 930 1160 1210 730 815 865 935
1NORM 760 865 1045 1090 680 755 795 855
N/A 775 930 965 625 695 730 775
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 458 cfm.
G61MPV−36B−070 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 70 85 105 130 150 170 190 205 225 110 115 135 155 175 195 215 240 260
Speed Tap 2 100 120 145 165 190 215 235 260 280 130 155 180 205 230 255 280 300 325
Tap 3 185 210 240 270 290 310 345 375 405 250 280 310 340 370 400 425 450 475
Tap 4 200 230 265 295 325 355 385 410 440 285 310 340 365 400 430 455 485 510
COOL"
Sd
Tap 1 55 70 90 110 130 145 160 175 190 135 155 175 200 220 245 270 295 320
Speed Tap 2 75 90 110 130 150 170 190 205 220 185 215 250 285 315 345 370 395 420
Tap 3 85 100 120 145 165 185 205 225 250 235 265 300 335 370 400 425 455 480
Tap 4 105 125 150 170 190 210 235 255 280 315 340 370 395 440 480 510 540 570
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 65 75 95 110 130 150 170 185 200 75 90 110 125 150 170 190 205 225
Speed Tap 2 85 100 120 140 160 180 200 225 245 100 120 145 165 190 210 230 250 270
Tap 3 130 155 180 205 235 265 285 305 325 195 210 230 250 280 315 340 370 395
Tap 4 145 170 200 230 255 280 305 330 355 200 225 255 280 315 355 375 400 425
COOL"
Speed
Tap 1 45 60 80 95 115 130 145 160 175 100 120 140 165 190 215 235 255 275
Speed Tap 2 60 75 95 110 130 145 165 180 200 140 165 190 220 245 265 290 315 340
Tap 3 65 85 105 125 140 155 175 195 215 175 200 230 260 285 310 340 365 390
Tap 4 85 100 120 140 160 180 200 220 240 230 260 295 325 360 390 410 435 455
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Speed Tap 2 60 75 100 120 140 160 175 195 210 70 90 115 135 160 185 200 220 235
Tap 3 95 120 145 170 190 210 230 245 265 140 160 180 205 225 245 270 295 325
Tap 4 110 130 155 185 205 225 245 270 290 145 165 190 215 235 255 280 305 330
COOL"
Speed
Tap 1 40 55 70 85 100 120 130 145 160 75 90 110 125 150 175 190 210 225
Speed Tap 2 45 60 80 95 115 135 145 160 175 95 120 150 175 200 220 240 260 285
Tap 3 50 65 85 105 125 145 160 175 190 125 150 175 195 220 240 265 290 320
Tap 4 60 75 95 115 135 150 170 190 215 165 190 215 245 265 485 315 340 370

Page 6
BLOWER DATA
G61MPV−36B−071 BLOWER PERFORMANCE (less filter)
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 925 1065 1305 1345 1055 1225 1305 1405
1NORM 840 970 1185 1230 955 1100 1185 1280
775 875 1050 1085 855 975 1040 1140
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 840 965 1190 1235 745 835 895 970
1NORM 765 880 1070 1115 695 770 815 875
705 795 955 990 645 705 740 790
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 458 cfm.
G61MPV−36B−071 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 70 90 110 135 160 180 195 215 240 100 120 140 165 190 210 235 255 275
Speed Tap 2 11 5 135 160 185 205 230 250 270 295 160 185 210 230 255 275 295 315 330
Tap 3 205 230 265 295 325 355 380 410 425 290 320 350 380 415 440 465 490 480
Tap 4 220 250 290 325 360 390 425 455 455 310 345 375 410 445 475 500 525 515
COOL"
Sd
Tap 1 55 70 90 110 130 145 165 185 200 145 170 195 220 245 270 295 320 345
Speed Tap 2 7 0 90 115 135 160 180 200 220 240 225 255 285 315 350 375 400 425 445
Tap 3 9 0 105 130 150 170 195 220 240 260 265 300 340 375 415 440 465 490 505
Tap 4 110 130 155 180 205 230 250 270 295 360 390 425 460 495 515 540 560 535
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 60 75 95 115 135 155 175 195 215 75 95 115 140 160 180 200 220 240
Speed Tap 2 8 0 100 125 150 180 200 220 240 255 110 135 165 190 220 240 255 275 290
Tap 3 150 170 200 225 250 275 300 325 350 210 235 260 285 315 345 375 405 425
Tap 4 165 190 220 250 280 310 335 360 385 230 260 290 325 355 380 405 430 435
COOL"
Speed
Tap 1 45 60 80 95 115 130 150 165 185 110 130 155 180 205 225 245 265 285
Speed Tap 2 6 0 75 95 115 135 155 170 190 215 160 185 215 245 280 305 330 355 375
Tap 3 7 0 85 105 130 150 170 190 215 235 205 230 260 290 320 350 380 410 420
Tap 4 8 0 100 125 150 170 195 215 240 260 260 290 320 355 390 415 440 470 480
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 50 65 85 100 120 140 155 175 195 70 90 105 125 145 165 185 205 215
Speed Tap 2 6 5 80 100 120 140 165 185 205 225 90 110 130 155 175 195 215 235 250
Tap 3 105 125 150 180 205 225 245 265 290 145 170 195 225 255 270 290 305 325
Tap 4 115 135 165 190 215 240 260 285 310 160 185 215 240 270 290 310 330 350
COOL"
Speed
Tap 1 40 55 70 85 100 120 135 155 170 75 95 120 140 165 185 205 225 245
Speed Tap 2 4 5 60 80 100 115 135 150 170 185 115 135 160 190 215 235 255 270 295
Tap 3 5 5 70 90 110 130 150 165 185 205 140 165 190 215 245 265 290 315 340
Tap 4 60 75 100 120 140 165 185 205 225 180 205 235 265 295 320 345 365 390

Page 7
BLOWER DATA
G61MPV−36C−090 BLOWER PERFORMANCE (less filter)
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ N/A 1040 1285 1340 1020 1185 1275 1395
1NORM N/A 915 1150 1200 905 1060 1145 1270
N/A N/A 1020 1055 800 925 1010 1100
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ N/A 940 1160 1210 705 790 845 920
1NORM N/A 840 1040 1075 650 730 770 830
N/A N/A 915 945 600 670 705 750
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 479 cfm.
G61MPV−36C−090 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Speed Tap 2 75 90 110 130 155 185 205 225 250 90 110 140 165 185 205 235 260 290
Tap 3 125 150 175 200 230 260 290 325 355 170 195 230 265 290 330 360 395 425
Tap 4 130 160 200 235 265 295 325 355 385 185 220 255 290 325 360 395 430 460
COOL"
Sd
Tap 1 35 50 70 90 105 125 140 160 175 85 110 135 160 185 205 235 265 295
Speed Tap 2 45 60 80 100 125 150 170 185 205 125 155 185 220 245 275 305 330 360
Tap 3 60 75 95 110 135 160 180 200 220 165 195 230 265 300 330 355 380 410
Tap 4 65 85 110 135 160 180 205 225 245 210 245 285 325 360 390 425 460 495
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Speed Tap 2 50 65 90 110 135 155 175 200 220 60 80 105 130 155 185 205 220 240
Tap 3 90 110 145 175 200 225 245 270 290 110 135 170 205 230 250 285 320 355
Tap 4 90 120 155 190 205 225 250 280 305 140 165 190 220 255 290 315 335 360
COOL"
Speed
Tap 1 35 45 60 75 95 115 130 145 160 60 80 110 135 155 175 195 215 235
Speed Tap 2 40 55 70 90 110 130 150 165 185 105 125 145 170 200 225 250 270 295
Tap 3 45 60 80 95 115 135 155 175 195 115 140 175 205 235 265 290 315 335
Tap 4 50 65 85 105 130 155 180 200 220 155 185 220 255 285 315 345 380 415
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Speed Tap 2 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Tap 3 65 85 105 130 155 180 200 225 250 85 105 135 160 185 205 230 250 270
Tap 4 75 95 120 140 165 190 210 230 250 90 115 140 170 190 215 245 275 305
COOL"
Speed
Tap 1 30 40 55 75 90 105 120 135 150 55 65 85 105 125 150 170 190 210
Speed Tap 2 40 50 65 80 100 120 130 145 160 65 90 120 145 165 185 205 225 250
Tap 3 40 55 70 90 105 125 140 160 180 85 105 135 165 185 210 235 260 285
Tap 4 45 60 75 90 115 135 155 170 190 105 125 150 175 210 240 275 305 335

Page 8
BLOWER DATA
G61MPV−60C−090 BLOWER PERFORMANCE (less filter)
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side.
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1500 1675 1880 2090 1605 1710 1925 2165
1NORM 1355 1545 1720 1900 1440 1560 1755 1960
1194 1365 1540 1695 1275 1380 1590 1755
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1360 1560 1730 1910 1105 1185 1355 1545
1NORM 1220 1405 1585 1740 995 1080 1205 1345
1105 1235 1410 1570 890 960 1090 1215
1Factory default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 449 cfm.
G61MPV−60C−090 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 190 215 245 275 305 340 365 390 420 245 275 315 350 380 410 440 475 510
Speed Tap 2 265 300 340 380 415 450 480 510 540 350 385 420 455 490 525 555 580 610
Tap 3 380 415 450 485 520 555 595 630 665 485 520 555 595 640 685 720 755 790
Tap 4 495 535 580 625 660 700 735 770 805 650 695 750 800 850 900 925 955 985
COOL"
Sd
Tap 1 115 135 160 185 205 230 255 275 300 305 340 375 410 440 475 505 535 565
Speed Tap 2 145 165 190 215 240 265 285 305 325 355 390 430 470 510 550 580 610 635
Tap 3 170 200 240 275 305 335 370 400 430 510 555 600 645 690 730 765 795 830
Tap 4 265 295 330 365 400 435 465 500 535 725 780 835 895 935 975 1005 1035 1065
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 150 170 195 220 245 270 295 325 350 180 210 245 280 305 330 365 400 430
Speed Tap 2 200 230 270 305 330 355 385 415 450 265 295 335 375 405 430 465 500 535
Tap 3 270 310 355 395 425 460 490 525 560 370 400 435 470 515 555 585 615 645
Tap 4 390 420 455 490 525 555 595 630 670 495 530 570 605 645 685 720 755 795
COOL"
Speed
Tap 1 90 110 130 155 175 195 215 235 255 220 250 285 320 350 385 415 450 485
Speed Tap 2 110 130 155 180 200 220 245 265 285 270 305 345 385 420 455 485 515 545
Tap 3 145 165 190 215 245 270 295 320 340 390 425 465 500 540 580 610 640 670
Tap 4 180 205 240 270 300 330 365 395 430 540 580 625 670 710 755 795 830 870
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 110 135 165 190 215 235 255 280 300 155 175 195 215 245 270 295 315 340
Speed Tap 2 155 175 200 225 255 285 310 335 365 190 215 250 285 310 335 365 395 425
Tap 3 200 230 270 305 335 365 395 420 450 255 290 335 375 400 430 465 495 530
Tap 4 270 305 345 385 415 450 480 515 545 345 385 425 465 495 530 565 605 645
COOL"
Speed
Tap 1 70 85 105 125 145 165 185 205 225 160 190 220 255 275 300 330 360 390
Speed Tap 2 80 100 120 140 165 190 210 225 245 195 225 260 295 325 350 385 415 450
Tap 3 110 130 160 185 205 225 250 275 300 295 330 365 400 430 460 495 535 570
Tap 4 155 175 195 220 245 270 295 315 340 400 435 470 510 545 585 610 640 665

Page 9
BLOWER DATA
G61MPV−60C−090 BLOWER PERFORMANCE (less filter)
Side Return Air with Optional RAB Return Air Base
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1440 1630 1810 2015 1525 1655 1860 2100
1NORM 1300 1485 1655 1830 1385 1500 1695 1905
1155 1310 1480 1640 1240 1320 1510 1695
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1320 1490 1665 1840 1060 1135 1285 1455
1NORM 1180 1345 1515 1680 960 1035 1165 1310
1055 1180 1340 1490 865 920 1050 1165
1Factory default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 449 cfm.
G61MPV−60C−090 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 180 205 235 260 290 320 350 380 410 230 260 290 320 355 390 420 445 475
Speed Tap 2 250 280 315 350 385 425 455 485 515 325 360 400 435 465 495 530 565 595
Tap 3 345 380 415 455 485 515 550 580 615 460 490 520 550 595 640 675 715 750
Tap 4 465 505 545 585 625 660 695 730 760 665 685 710 735 775 820 860 900 940
COOL"
Sd
Tap 1 110 130 150 175 195 215 240 265 290 275 305 340 380 410 440 470 505 540
Speed Tap 2 130 155 175 200 220 245 265 290 315 360 390 420 455 485 515 550 590 625
Tap 3 160 190 220 255 280 305 335 360 390 490 530 570 610 645 680 715 750 785
Tap 4 220 255 295 330 365 400 430 460 490 695 750 805 855 895 935 965 995 1025
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 145 165 190 210 235 260 285 310 335 170 195 230 260 290 320 350 375 400
Speed Tap 2 195 220 250 275 305 335 365 395 420 255 285 315 345 370 395 430 465 500
Tap 3 280 305 335 360 395 425 455 485 515 340 375 410 450 480 510 545 580 615
Tap 4 370 400 430 460 495 530 565 595 625 465 500 535 575 610 645 685 725 765
COOL"
Speed
Tap 1 80 95 120 140 165 190 210 235 255 190 225 265 305 330 355 390 420 455
Speed Tap 2 100 120 140 165 190 215 235 255 275 265 295 325 355 390 420 455 495 530
Tap 3 140 160 185 205 235 260 285 305 325 375 410 440 475 500 530 570 610 650
Tap 4 180 205 240 270 300 325 350 380 405 520 560 605 645 685 720 760 805 845
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 100 125 150 175 200 220 245 265 290 135 155 180 200 225 250 275 300 330
Speed Tap 2 150 165 185 205 235 265 290 310 335 170 200 235 265 290 320 350 375 405
Tap 3 210 230 255 275 310 345 370 400 425 255 285 315 350 370 390 430 470 510
Tap 4 260 290 320 350 390 430 455 480 505 340 375 410 445 475 510 535 565 590
COOL"
Speed
Tap 1 70 85 105 125 140 160 180 200 220 155 175 200 225 255 290 315 340 365
Speed Tap 2 80 95 115 135 155 175 200 220 245 185 210 235 260 295 325 355 385 415
Tap 3 105 125 150 175 200 220 240 265 290 255 290 330 365 400 430 460 490 520
Tap 4 135 160 185 215 235 260 285 305 330 370 400 440 475 505 530 565 600 635

Page 10
BLOWER DATA
G61MPV−60C−090 BLOWER PERFORMANCE (less filter)
Single Side Return Air − Air volumes in bold require field fabricated transition to accommodate 20 x 25 x 1 in. cleanable air filter in
order to maintain proper air velocity across the filter.
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1450 1640 1820 2055 1575 1690 1895 2135
1NORM 1320 1510 1700 1870 1405 1530 1735 1935
1165 1320 1500 1665 1250 1355 1560 1735
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1315 1510 1695 1875 1080 1160 1315 1490
1NORM 1190 1365 1545 1715 985 1060 1185 1330
1075 1205 1370 1520 865 930 1065 1185
1Factory default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 449 cfm.
G61MPV−60C−090 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 170 200 230 265 295 325 355 385 415 225 255 290 325 360 390 425 455 490
Speed Tap 2 255 285 320 355 390 425 455 490 520 330 370 410 455 485 515 540 560 585
Tap 3 345 385 430 475 515 555 585 610 640 445 480 520 560 610 660 700 735 775
Tap 4 470 515 560 610 650 685 725 765 800 650 695 745 800 840 885 915 950 980
COOL"
Sd
Tap 1 110 130 155 180 205 225 245 270 290 285 320 355 390 430 465 500 535 565
Speed Tap 2 125 150 175 205 225 250 275 300 325 355 390 430 470 500 530 570 605 645
Tap 3 170 195 230 260 290 325 355 385 415 515 550 590 625 670 710 750 795 840
Tap 4 240 275 315 355 380 405 445 485 525 740 785 835 885 920 955 990 1020 1050
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 145 165 190 215 240 265 290 315 345 175 200 235 265 300 330 360 385 415
Speed Tap 2 195 225 255 290 320 345 375 405 435 260 290 325 355 390 425 455 490 520
Tap 3 265 300 335 370 405 435 470 505 540 360 395 435 470 515 555 585 620 650
Tap 4 385 420 460 495 525 555 590 625 660 475 515 560 600 640 685 720 760 800
COOL"
Speed
Tap 1 85 100 125 145 170 200 215 235 255 200 230 270 310 340 370 400 430 460
Speed Tap 2 105 125 150 170 195 220 240 260 280 260 295 330 365 400 440 470 500 530
Tap 3 135 160 185 215 240 270 290 315 335 410 440 470 500 540 580 610 640 670
Tap 4 170 200 235 265 305 340 365 390 415 550 585 620 655 695 740 780 825 865
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 105 130 155 180 205 225 245 270 290 130 155 180 204 230 260 285 310 335
Speed Tap 2 145 165 195 220 250 280 305 335 360 170 195 230 265 295 325 355 385 420
Tap 3 190 220 250 285 315 345 375 405 440 245 280 315 350 385 420 450 485 520
Tap 4 270 295 325 355 395 430 465 500 530 340 375 415 455 490 525 560 595 625
COOL"
Speed
Tap 1 65 80 100 120 140 160 180 205 225 155 180 215 245 265 290 320 345 375
Speed Tap 2 75 90 110 130 155 180 200 220 245 190 220 250 275 305 335 370 400 430
Tap 3 100 120 150 175 200 220 245 265 290 290 320 355 385 415 445 485 520 560
Tap 4 135 160 185 215 240 265 290 315 335 405 435 465 495 540 585 610 640 665

Page 11
BLOWER DATA
G61MPV−60C−091 BLOWER PERFORMANCE (less filter)
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side.
0 through 1.00 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1560 1770 1895 2110 1665 1790 1990 2175
1NORM 1400 1575 1745 1930 1515 1625 1815 2020
1245 1400 1565 1745 1340 1445 1645 1800
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1420 1625 1780 1965 1240 1245 1410 1585
1NORM 1280 1465 1615 1790 1060 1125 1270 1430
1145 1290 1445 1610 940 1015 1145 1270
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 458 cfm.
G61MPV−60C−091 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 255 280 305 330 355 390 420 450 475 305 340 375 415 450 475 505 530 560
Speed Tap 2 325 360 390 425 460 500 540 580 615 395 440 490 540 585 620 655 690 730
Tap 3 495 525 555 590 620 650 680 710 710 615 645 675 705 740 755 775 790 765
Tap 4 625 660 700 740 780 815 855 890 890 800 840 880 920 960 985 1005 1030 1000
COOL"
Sd
Tap 1 180 200 225 250 280 300 320 345 370 390 420 455 485 520 550 585 615 640
Speed Tap 2 200 225 250 280 305 330 350 375 395 485 520 555 590 625 655 680 710 735
Tap 3 245 270 300 335 365 390 420 445 470 655 700 740 785 830 860 890 925 930
Tap 4 355 380 405 435 465 495 520 550 585 930 960 990 1020 1050 1060 1070 1045 1005
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 185 210 235 265 290 315 340 365 390 230 260 290 320 350 375 405 430 460
Speed Tap 2 240 270 305 340 375 410 445 475 505 300 335 370 410 450 485 520 560 595
Tap 3 385 410 435 455 480 510 540 656 595 465 495 530 565 595 625 650 680 690
Tap 4 480 510 540 570 600 605 670 705 740 585 626 670 710 750 785 820 855 870
COOL"
Speed
Tap 1 110 130 155 180 205 230 250 275 295 285 315 350 380 415 440 465 490 525
Speed Tap 2 140 160 185 205 230 250 265 285 310 345 380 420 460 495 525 550 580 615
Tap 3 185 210 235 265 290 320 350 380 395 485 525 565 610 650 680 715 745 775
Tap 4 245 275 305 335 365 395 420 450 480 680 720 765 810 855 885 910 940 960
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 145 165 190 210 235 255 280 300 320 175 195 225 250 275 295 320 340 365
Speed Tap 2 175 200 225 255 280 305 335 360 385 220 250 280 315 350 375 400 430 460
Tap 3 275 305 330 360 385 410 435 460 485 365 390 410 435 460 485 510 535 555
Tap 4 340 370 405 440 475 505 535 570 600 460 490 520 550 580 610 640 675 700
COOL"
Speed
Tap 1 90 105 125 145 165 185 205 225 245 215 240 270 300 325 350 375 395 425
Speed Tap 2 105 125 150 170 195 215 235 255 270 255 285 315 345 380 405 430 455 495
Tap 3 145 165 190 215 235 260 280 305 325 385 410 440 470 495 535 570 605 630
Tap 4 190 215 240 265 290 315 345 370 395 485 520 555 590 625 660 700 735 765

Page 12
BLOWER DATA
G61MPV−60C−091 BLOWER PERFORMANCE (less filter)
Side Return Air with Optional RAB Return Air Base
0 through 1.00 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1490 1690 1850 2050 1590 1695 1905 2035
1NORM 1345 1520 1700 1870 1445 1535 1740 1900
1195 1345 1525 1675 1280 1370 1580 1700
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1360 1550 1720 1880 1125 1195 1370 1530
1NORM 1225 1400 1540 1715 1030 1085 1230 1380
1100 1225 1385 1540 915 980 1110 1225
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 458 cfm.
G61MPV−60C−091 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 210 235 265 295 325 350 380 405 435 265 295 330 365 400 425 450 480 500
Speed Tap 2 270 300 340 380 415 450 485 520 555 355 395 445 490 535 570 610 645 675
Tap 3 430 455 490 520 550 580 610 645 675 530 656 600 640 675 700 730 755 775
Tap 4 525 560 600 635 675 710 750 790 825 680 725 775 820 870 905 935 970 995
COOL"
Sd
Tap 1 145 165 185 210 230 255 275 295 315 353 380 410 440 470 500 530 555 580
Speed Tap 2 175 195 220 245 270 290 315 335 360 445 475 510 540 575 600 625 650 675
Tap 3 230 260 285 315 345 370 395 420 450 640 680 725 765 810 840 870 905 890
Tap 4 335 365 390 415 445 470 500 525 560 855 885 915 940 970 970 965 965 935
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 160 185 210 235 260 280 305 325 355 195 225 255 285 320 345 365 390 420
Speed Tap 2 205 235 265 295 330 355 385 415 450 250 285 325 365 405 435 465 495 530
Tap 3 325 350 375 400 430 455 475 500 530 415 445 475 505 540 570 605 635 665
Tap 4 410 445 475 510 545 575 605 640 670 505 545 585 625 660 700 740 780 815
COOL"
Speed
Tap 1 105 125 150 170 195 220 240 261 280 260 285 315 345 375 400 420 445 475
Speed Tap 2 135 155 180 200 225 240 260 275 300 320 350 385 420 455 480 505 530 565
Tap 3 175 200 225 250 275 305 330 360 375 475 515 555 595 635 665 695 730 760
Tap 4 235 260 290 320 350 375 405 430 460 625 665 705 750 790 815 840 865 855
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 120 140 165 190 215 235 260 285 305 150 170 195 220 245 270 295 320 345
Speed Tap 2 145 170 200 225 255 285 315 345 370 185 210 240 270 305 330 360 390 425
Tap 3 230 255 285 315 345 370 395 420 445 310 335 365 390 415 445 470 495 520
Tap 4 280 315 350 385 420 450 480 515 540 385 415 445 480 515 545 580 610 640
COOL"
Speed
Tap 1 85 100 120 140 160 180 195 215 235 195 220 245 270 295 315 335 360 385
Speed Tap 2 100 120 145 165 190 210 230 250 265 235 260 290 320 345 370 395 420 455
Tap 3 140 155 180 200 225 245 265 285 305 375 400 430 455 485 520 555 590 620
Tap 4 180 205 230 255 280 305 330 355 380 450 480 515 545 580 610 645 675 705

Page 13
BLOWER DATA
G61MPV−60C−091 BLOWER PERFORMANCE (less filter)
Single Side Return Air − Air volumes in bold require field fabricated transition to accommodate 20 x 25 x 1 in. cleanable air filter in
order to maintain proper air velocity across the filter.
0 through 1.00 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1510 1720 1810 2065 1615 1735 1900 2055
1NORM 1365 1535 1725 1880 1465 1575 1735 1915
1210 1360 1520 1700 1300 1400 1575 1715
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1385 1560 1755 1900 1150 1220 1385 1545
1NORM 1240 1400 1570 1750 1050 1105 1245 1395
1125 1260 1410 1560 930 995 1125 1240
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 458 cfm.
G61MPV−60C−091 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Speed
Tap 1 230 255 285 315 350 375 400 425 455 285 315 350 385 420 450 485 515 545
Speed Tap 2 290 325 365 405 445 480 510 545 585 370 410 455 500 545 585 625 670 705
Tap 3 475 505 545 580 620 645 670 695 695 560 595 625 660 695 720 745 770 755
Tap 4 570 610 655 700 740 775 805 835 835 750 790 835 880 925 960 995 1025 1010
COOL"
Sd
Tap 1 155 175 200 225 250 275 295 320 345 385 415 450 485 515 545 580 610 635
Speed Tap 2 175 200 225 250 275 300 320 340 370 470 500 535 570 600 630 655 685 710
Tap 3 240 265 295 325 355 385 410 435 465 645 685 730 770 815 845 875 905 890
Tap 4 355 380 410 440 465 495 525 555 590 905 935 965 995 1025 1025 1020 1020 985
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 160 190 220 250 280 305 325 350 375 215 240 270 300 330 360 390 415 445
Speed Tap 2 205 235 275 315 350 380 415 445 475 270 305 345 385 420 455 495 530 565
Tap 3 360 385 415 440 465 490 515 540 570 450 480 515 545 580 605 630 660 690
Tap 4 455 485 520 550 585 615 650 680 715 555 590 630 675 715 745 780 810 850
COOL"
Speed
Tap 1 115 135 160 185 210 235 260 280 300 285 315 345 380 410 435 460 485 520
Speed Tap 2 135 160 180 205 230 245 265 280 305 335 365 405 440 480 505 530 560 595
Tap 3 180 205 230 260 285 315 345 370 390 475 515 555 595 640 670 700 730 760
Tap 4 245 275 305 335 370 395 425 450 485 660 705 750 790 835 865 890 915 905
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 135 155 175 200 225 250 275 300 320 160 185 205 230 255 280 310 335 360
Speed Tap 2 160 185 215 240 270 300 335 365 390 200 225 255 285 310 345 380 415 445
Tap 3 270 295 320 345 375 400 420 445 475 330 355 385 410 435 460 485 510 535
Tap 4 325 355 385 420 450 480 510 535 575 420 450 485 515 550 580 610 640 670
COOL"
Speed
Tap 1 90 110 130 150 170 195 215 235 250 215 240 270 295 325 345 370 390 420
Speed Tap 2 105 125 145 170 195 215 235 255 270 245 275 305 335 365 390 415 440 475
Tap 3 145 165 185 210 235 255 275 300 320 375 400 430 460 490 525 560 595 620
Tap 4 190 215 240 265 290 320 345 375 400 475 510 545 575 610 645 680 715 745

Page 14
BLOWER DATA
G61MPV−60C−110 BLOWER PERFORMANCE (less filter)
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side.
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1505 1710 1915 2130 1625 1745 1990 2210
1NORM 1370 1565 1765 1945 1465 1580 1790 1995
1205 1380 1565 1740 1290 1405 1605 1790
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1370 1570 1760 1945 1150 1215 1380 1540
1NORM 1235 1420 1600 1780 1050 1125 1265 1430
1105 1250 1420 1580 935 1000 1140 1255
1Factory default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 463 cfm.
G61MPV−60C−110 BLOWER MOTOR WATTS
Jumper
Motor Watts @ Various External Static Pressures − in. wg.
Jumper
Speed First Stage Second Stage
Speed
Positions 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 165 195 230 265 300 336 370 400 430 210 245 290 330 365 395 435 470 510
Speed Tap 2 245 285 325 370 400 435 470 505 540 330 365 405 445 480 520 560 600 640
Tap 3 365 395 430 465 510 550 590 630 670 450 490 535 580 625 665 700 735 770
Tap 4 480 520 565 610 645 685 725 770 810 625 670 715 760 805 850 890 930 970
COOL"
Sd
Tap 1 110 130 160 185 210 230 255 280 305 280 315 350 390 430 475 510 550 585
Speed Tap 2 135 155 180 210 230 255 285 315 350 340 380 425 465 505 545 575 610 645
Tap 3 180 210 250 285 310 340 370 400 425 510 545 585 620 675 735 770 805 840
Tap 4 235 270 310 350 380 420 450 480 515 710 755 805 855 905 950 980 1010 1035
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 150 170 190 205 245 280 305 335 365 170 200 235 270 300 330 365 400 430
Speed Tap 2 195 220 255 285 320 360 390 420 445 240 275 320 365 400 430 465 500 530
Tap 3 265 300 335 370 410 445 480 520 555 360 395 435 475 510 550 585 620 650
Tap 4 370 410 455 495 525 550 590 630 670 460 500 545 590 635 675 720 760 805
COOL"
Speed
Tap 1 100 115 135 150 180 210 235 255 275 205 235 275 310 345 380 415 450 485
Speed Tap 2 110 130 150 175 200 235 260 280 300 250 285 325 360 400 440 470 505 540
Tap 3 155 180 200 225 250 280 310 340 370 375 410 445 485 530 575 605 635 670
Tap 4 190 220 255 290 320 350 380 410 440 510 550 595 640 685 725 770 815 860
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 105 130 155 180 210 235 260 285 305 140 160 180 200 235 265 295 320 350
Speed Tap 2 140 165 195 225 250 280 310 345 375 165 195 230 265 300 335 370 405 440
Tap 3 185 220 255 290 325 355 390 420 450 250 285 325 360 395 430 465 500 530
Tap 4 250 290 335 375 410 445 480 520 560 340 375 420 460 495 530 565 605 645
COOL"
Speed
Tap 1 70 90 110 130 150 175 200 220 240 155 180 210 240 270 295 325 355 385
Speed Tap 2 80 100 120 145 170 200 220 240 260 185 215 245 280 315 345 380 415 450
Tap 3 110 130 155 180 205 235 260 280 310 265 300 345 385 425 465 500 535 570
Tap 4 160 180 200 225 250 275 300 330 360 375 415 455 495 535 575 615 650 690

Page 15
BLOWER DATA
G61MPV−60C−110 BLOWER PERFORMANCE (less filter)
Single Side Return Air − Air volumes in bold require field fabricated transition to accommodate 20 x 25 x 1 in. cleanable air filter in
order to maintain proper air velocity across the filter.
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1485 1675 1870 2080 1585 1700 1905 2135
1NORM 1350 1525 1725 1895 1435 1535 1740 1930
1175 1335 1505 1670 1280 1385 1570 1755
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1325 1505 1695 1870 1140 1215 1345 1490
1NORM 1195 1365 1550 1720 1005 1085 1220 1380
1080 1205 1365 1530 930 1000 1105 1220
1Factory default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 463 cfm.
G61MPV−60C−110 BLOWER MOTOR WATTS
Ju
m
pe
rMotor Watts @ Various External Static Pressures − in. wg.
Jumper
Speed First Stage Second Stage
Speed
Positions 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 155 185 220 255 285 320 350 380 410 205 240 280 320 355 390 420 450 480
Speed Tap 2 215 255 300 345 370 395 430 465 500 320 350 380 410 455 495 530 565 595
Tap 3 335 375 415 455 490 530 570 605 645 445 475 510 545 590 630 670 710 750
Tap 4 450 490 535 580 615 645 690 730 775 580 625 680 735 770 810 850 890 930
COOL"
Sd
Tap 1 105 130 160 190 210 230 260 280 310 255 295 345 390 430 470 510 545 580
Speed Tap 2 125 150 175 200 225 250 280 310 335 340 375 415 455 490 525 570 615 660
Tap 3 170 195 230 265 295 325 355 380 410 455 500 555 610 650 695 750 800 850
Tap 4 215 250 295 340 375 405 440 470 500 650 710 770 835 880 920 960 995 1035
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 140 160 185 210 235 265 285 310 330 155 185 220 250 285 320 350 380 410
Speed Tap 2 170 200 235 270 305 340 370 400 430 220 260 300 345 370 395 430 465 500
Tap 3 250 290 330 370 400 430 465 505 540 355 385 415 450 485 520 555 595 630
Tap 4 360 395 430 465 510 550 580 605 635 460 490 525 560 605 645 685 730 770
COOL"
Speed
Tap 1 80 100 120 145 170 195 220 245 275 195 230 270 305 345 380 415 455 490
Speed Tap 2 95 115 140 165 190 220 240 270 295 225 265 315 360 400 440 475 515 555
Tap 3 140 160 190 215 240 265 295 320 350 365 400 445 485 525 565 610 650 690
Tap 4 175 205 240 270 305 340 370 400 430 495 535 580 625 675 725 770 815 860
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 105 125 150 175 195 215 240 265 290 135 155 180 205 225 245 275 300 330
Speed Tap 2 145 165 190 210 240 265 290 315 340 170 195 225 255 290 325 355 385 410
Tap 3 175 200 235 265 300 335 370 400 430 230 260 295 335 370 405 440 475 510
Tap 4 240 275 320 360 390 420 450 485 515 325 365 410 455 490 520 550 575 600
COOL"
Speed
Tap 1 60 80 100 125 150 170 195 220 245 155 180 205 235 270 305 340 370 400
Speed Tap 2 75 95 115 140 160 185 210 235 260 170 200 240 275 315 355 390 420 450
Tap 3 105 125 150 175 200 225 250 275 295 250 290 330 375 410 445 485 525 570
Tap 4 140 160 190 215 240 265 300 330 360 365 405 450 490 535 575 615 655 690

Page 16
BLOWER DATA
G61MPV−60C−110 BLOWER PERFORMANCE (less filter)
Side Return Air with Optional RAB Return Air Base
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1475 1670 1865 2070 1555 1685 1895 2130
1NORM 1345 1500 1695 1865 1415 1540 1735 1930
1180 1345 1510 1685 1245 1350 1545 1725
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1330 1510 1695 1875 1085 1155 1310 1475
1NORM 1195 1375 1550 1725 955 1050 1185 1335
1080 1210 1370 1520 850 920 1070 1195
1Factory default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 463 cfm.
G61MPV−60C−110 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 170 195 225 255 290 320 350 380 410 215 250 285 320 355 390 425 455 490
Speed Tap 2 230 265 305 345 380 415 445 480 515 315 355 400 445 480 510 540 575 605
Tap 3 350 385 420 460 495 525 560 595 630 460 490 525 555 605 655 690 730 770
Tap 4 450 490 535 580 610 640 680 720 760 590 630 680 725 785 840 880 915 955
COOL"
Sd
Tap 1 105 125 150 175 200 220 245 265 290 250 285 320 360 395 435 470 500 535
Speed Tap 2 130 150 175 200 220 240 270 295 320 335 365 405 445 480 515 550 590 630
Tap 3 165 190 220 250 275 305 335 370 400 470 505 545 585 630 670 710 755 800
Tap 4 205 240 285 330 360 390 420 450 485 655 695 745 790 840 885 925 965 1005
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 150 170 190 215 240 265 290 315 340 155 190 225 265 295 325 355 385 420
Speed Tap 2 185 215 245 275 310 340 370 400 430 230 265 300 335 370 400 440 475 515
Tap 3 255 285 325 365 400 440 465 495 525 335 370 410 450 490 530 560 595 625
Tap 4 345 385 430 475 510 545 575 605 635 460 490 520 550 595 645 680 715 750
COOL"
Speed
Tap 1 75 90 115 135 160 185 205 225 250 190 220 255 290 325 360 395 430 460
Speed Tap 2 100 120 145 165 185 205 230 255 280 250 285 325 360 390 420 455 485 520
Tap 3 135 155 175 200 230 260 280 305 330 355 395 435 475 510 545 580 620 660
Tap 4 170 195 225 255 290 320 350 375 405 475 515 565 610 655 705 745 785 825
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 110 130 150 175 195 215 240 265 290 135 155 180 210 230 250 275 300 325
Speed Tap 2 145 165 190 210 240 270 295 315 340 170 195 230 265 295 325 355 390 420
Tap 3 175 205 240 280 310 340 370 400 430 220 255 295 335 370 405 440 475 515
Tap 4 245 280 320 355 390 420 455 490 525 325 360 400 440 475 510 540 565 590
COOL"
Speed
Tap 1 55 70 90 110 135 155 175 195 220 150 170 200 225 255 285 315 340 370
Speed Tap 2 65 80 105 130 150 170 195 215 240 165 195 230 265 300 330 360 390 420
Tap 3 100 125 150 180 200 220 240 260 280 240 280 320 360 400 435 470 505 540
Tap 4 140 160 180 200 230 260 285 305 330 350 385 420 455 500 540 575 610 645

Page 17
BLOWER DATA
G61MPV−60C−111 BLOWER PERFORMANCE (less filter)
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side.
0 through 1.00 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1585 1810 1950 2170 1635 1750 1965 2195
1NORM 1430 1635 1770 1970 1480 1605 1805 2015
1265 1440 1600 1780 1290 1400 1605 1800
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1450 1650 1790 1990 1120 1195 1380 1560
1NORM 1295 1475 1630 1810 1020 1095 1225 1385
1165 1330 1470 1635 900 970 1105 1245
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 458 cfm.
G61MPV−60C−111 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 210 235 270 300 335 365 395 425 455 275 305 345 380 415 445 475 505 535
Speed Tap 2 265 305 345 385 425 465 505 545 585 350 395 440 485 530 570 605 645 685
Tap 3 425 460 490 525 560 590 615 645 675 575 605 640 670 700 730 765 795 800
Tap 4 540 580 625 665 710 745 780 815 850 730 770 805 845 885 925 965 1005 1015
COOL"
Sd
Tap 1 120 140 165 190 215 235 260 285 305 325 355 390 425 460 490 520 550 580
Speed Tap 2 145 165 190 215 235 260 290 315 340 390 425 465 500 540 570 600 630 660
Tap 3 190 220 250 285 320 345 375 400 425 545 585 630 670 715 755 790 830 865
Tap 4 275 305 340 375 410 440 470 505 535 775 815 860 900 945 975 1010 1040 1060
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 160 185 215 245 270 295 320 345 370 200 225 260 290 325 355 385 415 445
Speed Tap 2 205 235 275 310 350 380 410 445 475 255 290 330 375 415 455 490 530 570
Tap 3 325 350 380 410 440 470 500 530 550 425 455 490 520 555 580 610 635 665
Tap 4 410 445 480 520 555 595 630 670 700 540 575 620 660 700 735 770 805 840
COOL"
Speed
Tap 1 90 110 135 160 185 200 220 235 260 225 255 290 325 360 390 425 455 485
Speed Tap 2 105 130 155 180 205 230 250 270 290 295 325 360 395 430 465 495 525 560
Tap 3 145 165 195 220 250 275 295 320 350 435 465 505 540 575 605 635 665 700
Tap 4 190 220 250 280 315 345 370 400 430 590 625 665 705 745 790 830 875 905
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 120 140 165 195 220 240 265 290 310 150 175 200 225 250 275 305 330 355
Speed Tap 2 155 180 215 245 280 310 340 370 395 195 220 255 285 315 355 390 425 455
Tap 3 240 265 290 320 345 370 395 420 445 315 340 370 395 425 450 475 500 525
Tap 4 305 335 370 405 440 470 500 535 565 400 430 465 500 535 570 600 630 665
COOL"
Speed
Tap 1 75 90 110 130 150 170 190 215 230 165 190 220 245 275 305 330 360 390
Speed Tap 2 85 105 125 145 165 190 210 230 255 200 230 260 295 325 355 385 415 445
Tap 3 115 135 160 185 205 230 250 270 295 305 335 370 405 440 470 505 540 570
Tap 4 155 175 205 230 260 285 310 335 360 425 460 495 530 570 595 625 655 690

Page 18
BLOWER DATA
G61MPV−60C−111 BLOWER PERFORMANCE (less filter)
Side Return Air with Optional RAB Return Air Base
0 through 1.00 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1490 1695 1875 2080 1565 1655 1890 2060
1NORM 1345 1530 1700 1890 1410 1515 1730 1900
1210 1380 1530 1700 1230 1325 1545 1695
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1365 1555 1730 1925 1090 1155 1335 1505
1NORM 1235 1410 1575 1750 995 1060 1190 1335
1115 1270 1410 1565 875 935 1070 1200
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 458 cfm.
G61MPV−60C−111 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 165 190 225 255 290 320 355 385 410 210 245 280 320 355 385 410 440 470
Speed Tap 2 210 245 285 330 370 410 450 490 525 270 310 360 405 455 490 525 560 600
Tap 3 385 415 445 475 505 535 570 600 625 490 520 560 595 630 660 690 720 745
Tap 4 490 525 565 600 640 680 720 760 790 620 660 705 750 795 835 870 910 945
COOL"
Sd
Tap 1 115 130 155 180 205 225 250 270 290 310 335 365 390 415 445 470 500 525
Speed Tap 2 145 160 185 210 230 255 280 305 330 360 390 425 460 495 525 550 580 605
Tap 3 180 210 240 270 300 330 355 380 405 530 570 615 655 700 735 775 810 845
Tap 4 265 295 325 360 390 420 450 480 510 715 750 795 835 875 900 930 960 960
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 140 160 185 205 230 255 285 310 340 155 185 215 250 280 310 340 365 395
Speed Tap 2 175 205 235 265 295 330 360 395 435 200 235 275 320 360 395 435 470 505
Tap 3 295 320 350 380 405 430 455 485 505 360 390 425 460 490 520 550 585 610
Tap 4 375 405 445 480 515 545 580 610 640 460 495 540 580 620 660 700 740 770
COOL"
Speed
Tap 1 85 105 130 150 175 190 210 225 250 200 230 260 295 325 355 385 410 440
Speed Tap 2 105 125 150 175 200 220 240 265 285 270 300 330 365 395 425 455 485 515
Tap 3 135 160 185 210 235 260 280 305 330 425 455 490 525 560 590 620 650 685
Tap 4 180 210 240 270 300 330 355 385 415 545 580 615 651 690 730 770 810 835
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 105 125 150 170 195 220 240 265 285 135 155 175 200 225 250 275 300 325
Speed Tap 2 135 160 190 220 250 280 310 340 365 170 195 226 255 285 320 350 385 420
Tap 3 210 230 255 280 305 335 365 395 420 275 300 325 350 375 400 430 455 485
Tap 4 265 295 325 355 390 425 465 500 530 350 380 410 440 475 510 545 580 610
COOL"
Speed
Tap 1 70 85 105 120 140 160 180 205 220 150 170 195 220 250 275 300 325 350
Speed Tap 2 85 100 120 140 160 185 205 225 245 195 220 245 270 300 325 355 380 410
Tap 3 110 130 150 175 195 215 235 255 280 300 330 360 395 430 460 495 530 560
Tap 4 145 170 195 220 245 270 295 320 345 395 425 455 490 525 550 580 605 635

Page 19
BLOWER DATA
G61MPV−60C−111 BLOWER PERFORMANCE (less filter)
Single Side Return Air − Air volumes in bold require field fabricated transition to accommodate 20 x 25 x 1 in. cleanable air filter in
order to maintain proper air velocity across the filter.
0 through 1.00 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1525 1740 1905 2115 1585 1695 1880 2080
1NORM 1370 1560 1720 1915 1430 1555 1725 1915
1225 1395 1555 1730 1250 1355 1540 1710
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1395 1590 1730 1920 1110 1175 1355 1520
1NORM 1255 1430 1590 1765 1010 1075 1200 1350
1130 1285 1430 1590 895 955 1085 1215
1Factory default jumper setting.
N/A − First and second stage HEAT positions shown cannot be used on this model.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 458 cfm.
G61MPV−60C−111 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 190 220 250 280 310 345 375 410 430 260 290 320 350 380 415 445 480 510
Speed Tap 2 245 280 320 360 400 440 480 520 555 335 370 410 445 485 530 570 615 650
Tap 3 390 425 460 495 530 560 590 615 650 540 580 615 655 695 725 755 785 805
Tap 4 490 535 580 630 675 710 745 780 820 685 730 780 830 880 920 960 995 1015
COOL"
Sd
Tap 1 120 145 170 195 220 245 270 295 315 315 350 385 420 455 485 515 545 575
Speed Tap 2 145 165 190 210 235 260 285 310 340 375 410 445 485 520 550 580 610 635
Tap 3 185 215 250 280 315 340 370 395 420 535 575 615 660 700 740 775 815 845
Tap 4 280 310 345 375 410 445 475 505 535 755 795 840 880 925 955 985 1015 1015
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 155 175 200 230 255 275 300 320 350 180 205 240 270 300 330 360 390 420
Speed Tap 2 200 225 260 290 325 355 385 410 450 230 265 305 345 385 425 460 500 535
Tap 3 315 340 375 405 440 460 485 510 535 390 425 460 495 530 560 590 615 645
Tap 4 395 435 475 515 555 585 615 645 675 495 535 580 625 670 705 745 780 815
COOL"
Speed
Tap 1 95 115 140 165 190 205 225 245 270 220 250 285 320 360 390 420 450 480
Speed Tap 2 105 130 155 180 205 225 250 270 290 285 315 350 380 415 445 475 505 540
Tap 3 140 165 190 220 245 270 290 315 345 425 460 495 530 565 595 625 655 690
Tap 4 190 220 250 285 315 345 375 405 435 575 610 650 690 725 770 810 855 885
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 115 135 160 185 210 230 250 270 300 145 165 190 215 235 265 290 315 345
Speed Tap 2 150 175 205 235 265 295 320 250 385 185 210 245 275 305 335 370 405 440
Tap 3 235 260 285 310 335 360 380 405 435 295 325 350 380 410 440 470 495 515
Tap 4 300 330 360 390 420 455 485 515 550 375 410 445 485 520 555 590 630 655
COOL"
Speed
Tap 1 75 90 110 130 150 175 195 220 235 165 185 215 245 275 300 330 355 385
Speed Tap 2 85 100 125 145 165 185 210 230 250 195 225 255 285 315 340 370 400 430
Tap 3 115 135 155 180 205 225 245 265 290 300 330 365 395 430 465 495 530 560
Tap 4 155 180 205 235 260 285 310 340 365 415 450 485 520 555 585 610 640 675

Page 20
BLOWER DATA
G61MPV−60D−135 BLOWER PERFORMANCE (less filter)
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side.
0 through 0.80 in. w.g. External Static Pressure Range

ADJUST
"Speed Switch Positions
ADJUST"
Switch
P iti
Second Stage HEAT" Speed − cfm Second Stage COOL" Speed − cfm
Stc
Positions 112 3 4 1 2 3 14
+ 1505 1705 1900 2110 1615 1730 1945 2190
1NORM 1365 1550 1740 1920 1455 1580 1780 1985
1225 1380 1545 1720 1305 1400 1600 1780
ADJUST"
Switch
First Stage HEAT" Speed − cfm First Stage COOL" Speed − cfm
Switch
Positions 112 3 4 1 2 3 14
+ 1385 1570 1760 1930 1135 1205 1365 1540
1NORM 1250 1425 1595 1775 1025 1105 1235 1390
1135 1265 1430 1585 915 985 1115 1235
1Factory default jumper setting.
NOTES − The effect of static pressure is included in air volumes shown.
First stage HEAT is approximately 91% 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 − minimum 500 cfm.
Lennox Harmony IIItZone Control Applications − Minimum blower speed is 470 cfm.
G61MPV−60D−135 BLOWER MOTOR WATTS
JSd
Motor Watts @ Various External Static Pressures − in. wg.
Jumper Speed
Positions
First Stage Second Stage
Positions
00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 00.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
+" (Plus) SETTING (Adjust" Jumper at +" Setting)
HEAT"
Sd
Tap 1 155 185 220 255 285 315 340 365 390 215 225 265 305 335 365 400 435 465
Speed Tap 2 215 250 285 325 360 390 425 455 490 275 315 360 400 440 475 505 540 575
Tap 3 315 350 390 430 460 490 530 565 605 405 440 475 515 550 585 630 670 715
Tap 4 435 465 500 530 575 615 655 695 735 530 575 620 670 725 780 825 870 915
COOL"
Sd
Tap 1 95 120 145 170 190 215 240 265 290 250 285 320 360 390 420 450 485 515
Speed Tap 2 115 135 160 185 210 235 260 290 315 290 330 375 420 455 490 525 565 605
Tap 3 145 175 215 250 275 300 330 355 385 425 465 505 550 590 635 670 710 750
Tap 4 205 240 280 320 350 380 410 445 480 615 655 700 745 800 855 900 940 980
NORM" (Normal) SETTING (Adjust" Jumper at NORM" Setting)
HEAT"
Speed
Tap 1 130 155 180 205 235 260 285 305 330 155 180 210 245 270 300 330 355 385
Speed Tap 2 165 195 230 265 300 330 360 385 415 215 250 295 335 360 385 420 455 490
Tap 3 240 270 310 345 380 415 440 470 500 305 340 380 420 455 490 520 545 575
Tap 4 335 365 405 440 480 515 550 585 620 405 445 485 530 570 610 650 690 735
COOL"
Speed
Tap 1 80 95 115 135 160 190 210 230 255 185 215 245 280 310 335 370 400 430
Speed Tap 2 90 115 140 165 190 215 230 250 265 230 260 295 335 370 405 435 470 500
Tap 3 130 150 170 195 225 255 275 300 320 315 355 400 445 480 515 555 590 625
Tap 4 150 180 220 255 285 315 345 375 405 445 485 530 580 625 670 705 740 775
−" (Minus) SETTING (Adjust" Jumper at −" Setting)
HEAT"
Speed
Tap 1 100 120 140 165 190 215 240 265 290 125 150 175 200 225 245 270 295 320
Speed Tap 2 130 155 180 210 235 265 285 310 330 155 185 215 250 280 305 335 365 395
Tap 3 170 200 235 270 300 330 360 390 420 220 250 280 315 350 390 425 460 490
Tap 4 225 260 300 335 375 410 435 465 490 295 325 360 395 435 470 505 545 580
COOL"
Speed
Tap 1 65 80 100 120 140 160 180 195 215 145 170 195 225 250 280 305 330 355
Speed Tap 2 70 90 110 130 155 175 200 220 240 160 190 225 255 285 315 345 380 415
Tap 3 95 120 145 170 190 215 235 250 270 245 280 315 355 385 415 445 480 515
Tap 4 135 155 175 200 220 245 270 300 325 325 365 405 445 485 520 550 580 610