SPECIFICATIONS

Gas

 

Model

G61MP−36B−045

G61MP−36B−070

G61MP−48C−090

G61MP−60C−090

Heating

High

Input Btuh (kW)

44,000 (12.9)

66,000 (19.3)

88,000 (25.8)

88,000 (25.8)

Performance

Fire

Output

41,000 (12.0)

62,000 (18.2)

83,000 (24.3)

84,000 (24.6)

 

 

 

 

Temperature rise range − _F (_C)

25 − 55 (14 − 31)

35 − 65 (21 − 39)

35 − 65 (21 − 39)

25 − 55 (14 − 31)

 

 

 

 

 

 

 

 

Low

Input

30,000 (8.8)

45,000 (13.2)

60,000 (17.6)

60,000 (17.6)

 

Fire

Output

28,000 (8.2)

43,000 (12.6)

57,000 (16.7)

58,000 (17.0)

 

 

 

Temperature rise range − _F (_C)

10 − 40 (6 − 24)

20 − 50 (12 − 30)

25 − 55 (14 − 31)

15 − 45 (9 − 27)

 

 

 

 

 

 

 

 

 

1 AFUE

94.1%

94.1%

94.1%

94.1%

 

 

California Seasonal Efficiency

83.5%

86.0%

87.3%

84.4%

 

Highatic.g. (Pa)

0.5

0.5

0.5

0.5

 

 

 

 

 

 

 

Connections

 

2 Intake Pipe (PVC)

2

2

2

2

in.

 

2 Exhaust Pipe (PVC)

2

2

2

2

 

Condensate Drain Trap (PVC pipe) −

1/2

1/2

1/2

1/2

 

 

i.d.

 

 

 

 

 

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

1/2

1/2

1/2

1/2

 

 

 

 

 

 

Indoor

Wheel nominal diameter x width −in.

10 x 8 (254 x 203)

10 x 8 (254 x 203)

10 x 10 (254 x 254)

11−1/2 x 10 (292 x 229)

Blower

 

(mm)

 

 

 

 

 

 

Motor

1/3 (249)

1/3 (249)

1/2 (373)

1 (746)

 

 

Tons(kW) ofadd-oncooling

2.5 − 3 (8.8 − 10.5)

2.5 − 3.5 (8.8 − 12.3)

3 − 4 (10.5 − 14.0)

4 − 5 (14.0 − 17.5)

 

 

 

 

 

 

 

Shippinga

 

lbs. (kg) − 1 package

136 (62)

146 (66)

168 (76)

176 (80)

 

 

 

 

 

 

 

Electrical

 

 

120 volts − 60 hertz − 1 phase (less than 12 amps)

 

 

 

 

 

 

 

OPTIONAL ACCESSORIES − MUST BE ORDERED EXTRA

3 Air Filter and Rack Kit

Horizontal (end)

87L96 − 18 x 25 x 1 in.

87L97 − 20 x 25 x 1 in.

Size of filter

 

 

(457 x 635 x 25 mm)

(508 x 635 x 25 mm)

 

 

Side Return

Single 44J22 or Ten Pack 66K63 − (1) 16 x 25 x 1 in. (406 x 635 x 25 mm)

 

 

 

 

 

 

 

Condensate Drain Heat

6 ft. (1.8 m)

26K68

26K68

26K68

26K68

Cable

 

24 ft. (7.3 m)

26K69

26K69

26K69

26K69

 

 

 

 

50 ft. (15.2 m)

26K70

26K70

26K70

26K70

 

 

 

 

 

 

Heat Cable Tape Fiberglass − 1/2 in. (38 mm) x 66 ft. (20 m)

39G04

39G04

39G04

39G04

 

Aluminum foil − 2 in. (25 mm) x 60 ft. (18

39G03

39G03

39G03

39G03

 

 

m)

 

 

 

 

 

 

 

 

 

 

 

 

EZ Filter Base

Catalog Number − Ship. Weight − lbs.

73P56 − 7 (3)

73P56 − 7 (3)

73P57 − 8 (4)

73P57 − 8 (4)

 

 

(kg)

 

 

 

 

 

 

Dimensions − H x W x D − in. (mm)

4 x 17−5/8 x 28−5/8

4 x 17−5/8 x 28−5/8

4 x 21−5/8 x 28−5/8

4 x 21−5/8 x 28−5/8

 

 

 

(102 x 448 x 727)

(102 x 448 x 727)

(102 x 549 x 727)

(102 x 549 x 727)

 

Size of field provided filter − in. (mm)

16 x 25 x 1

 

16 x 25 x 1

20 x 25 x 1

20 x 25 x 1

 

 

 

 

 

(406 x 635 x 25)

 

(406 x 635 x 25)

(508 x 635 x 25)

(508 x 635 x 25)

 

 

 

 

 

 

 

Down−Flow Additive Base

 

11M60

 

11M60

11M61

11M61

 

 

 

 

 

 

4 High Altitude Orifice Kit − Natural Gas

59M16

59M16

59M16

59M16

4 High Altitude Pressure Switch Kit − Order two each

− − −

56M06

− − −

− − −

 

 

7501−10,000ft. (2286−3048m

 

 

 

 

 

 

 

 

 

 

Horizontal Support Frame Kit − Ship. Weight − lbs. (kg)

56J18 − 18 (8)

56J18 − 18 (8)

56J18 − 18 (8)

56J18 − 18 (8)

 

 

 

 

 

 

 

LPG/Propane Kit

 

0−7500 ft. (0−2286 m)

59M13

59M13

59M13

59M13

 

 

7501−10,000 ft. (2286−3048 m)

59M14

59M14

59M14

59M14

 

 

 

 

 

 

Natural to LPG/Propane Kit

 

59M87

59M87

59M87

59M87

 

 

 

 

 

 

RAB Return Air Base

 

− − −

− − −

− − −

RAB60C (12M71)

 

 

 

 

 

 

5 Termination Kits Concen-

1−1/2 inch (38 mm)

60G77

60G77

− − −

− − −

Direct Vent

tric

2 inch (51 mm)

− − −

− − −

33K97

33K97

Applications Only

 

 

3 inch (76 mm)

− − −

− − −

60L46

60L46

 

 

 

 

 

 

 

 

 

 

Wall

Close Couple − 2 inch (51 mm)

22G44

22G44

− − −

− − −

 

 

3 inch (76 mm)

44J40

44J40

44J40

44J40

 

 

 

Close Couple WTK − 2 inch (51 mm)

30G28

30G28

− − −

− − −

 

 

 

 

 

 

 

 

5,6 Termination Kits

Roof

2 inch (51 mm)

15F75

15F75

15F75

15F75

Direct Vent or

 

3 inch (76 mm)

44J41

44J41

44J41

44J41

Non−Direct Vent

 

 

 

 

 

 

 

 

Wall

Wall Ring Kit 2 inch (51 mm)

15F74

15F74

15F74

15F74

 

 

 

 

 

 

 

 

 

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.

2Determine from venting tables proper exhaust pipe size and termination kit required.

3Cleanable polyurethane frame type filter.

4Required for proper operation at altitudes from 7501 to 10,000 ft. (2286 to 3048 m).

5See Installation Instructions for specific venting information.

6Kits contain enough parts for two, non−direct vent installations.

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Lennox International Inc G61MP specifications Specifications, Optional Accessories − Must be Ordered Extra, Afue

G61MP specifications

Lennox International Inc. has long been a leader in HVAC solutions, and the G61MP gas furnace exemplifies the company's commitment to innovation and energy efficiency. This high-efficiency gas furnace operates with an Annual Fuel Utilization Efficiency (AFUE) of up to 96%, allowing homeowners to save significantly on energy costs while maintaining a comfortable indoor environment.

One of the primary features of the G61MP is its modulating gas valve. This technology enables the furnace to operate at multiple levels of heating output, ensuring that it can adjust its performance according to the home’s heating demands. By modulating the heating output, the G61MP maximizes efficiency and minimizes energy waste, providing a consistent temperature and improved comfort.

The G61MP also incorporates advanced two-stage heating, which enhances its performance by reducing temperature fluctuations in the home. This feature is especially beneficial during transitional weather periods when heating needs may vary widely. With its ability to operate on a lower stage most of the time, the furnace can produce quieter operation and reduced energy consumption.

In terms of design, the G61MP includes a sealed combustion chamber that draws air from outside the home for combustion, enhancing safety and efficiency. This design feature eliminates the need for indoor air, improving indoor air quality. The furnace is also equipped with a high-efficiency ECM blower motor that not only boosts comfort but operates quietly and uses less electricity compared to traditional motors.

Further enhancing its efficiency, the G61MP utilizes a variable-speed blower, which allows for precise control of airflow throughout the home. This results in better humidity control and improved air distribution, providing an overall more comfortable environment.

The Lennox G61MP is compatible with the iComfort S30 smart thermostat, allowing homeowners to control their heating remotely, adjust settings based on their schedules, and access energy usage data. This connectivity transforms the G61MP into an integral part of a smart home ecosystem, facilitating energy conservation and comfort optimization.

Lastly, the G61MP is designed with durability in mind. Its robust construction and high-quality materials ensure reliable performance and lengthy service life. Homeowners can feel assured that they are investing in a heating solution that will meet their needs for many winters to come. In summary, the Lennox G61MP gas furnace stands out with its high efficiency, advanced technology, and user-friendly features, making it a top choice for homeowners seeking exceptional heating performance.