Model

NLF-77

NLF-89

NLF-101

NLF-118

B.T.U.H. Input (usgph)

90,610

104,550

118,490

139,400

B.T.U.H. Output

77,000

89,000

101,000

118,000

A.F.U.E. rating (ETL)

82.4

82.1

82.6

81.6

Burner

AEROHF-US-2X or BECKETTAFG-AF81WPHSorBECKETTAF-AF81 WPHS

Insertion

7-7/8"

7-7/8"

7-7/8"

7-7/8"

Nozzle: Delevan 70A

0.65

0.75

0.85

1

Nozzle: Delevan 70A NS

0.65

0.75

0.85

1

Pump Pressure psi

100

100

100

100

Burner

Riello R40-F3-10

Insertion

7.75" T.F. Insertion plus Ceramic Sleeve

Nozzle: Delevan 60W

0.6

0.65

0.75

0.85

Pump Pressure psi

120

135

130

140

Approximate Air Gate Setting

2.4

3

3.6

4.5

Min. Over-Fire Pressure "W.C.

-0.005

-0.005

-0.005

-0.005

Min Flue Pipe Pressure "W.C.

-0.02

-0.02

-0.02

-0.02

FilterSize (Quantity)

16"x 24"(2)

16"x 24"(2)

16"x 24"(2)

16"x 24"(2)

CFM (Heating)

1025

1200

1300

1400

Belt Drive Models

@ 0.20" W.C.Static Pressure

Blower Type

Delhi G10

Blower Motor

1/3 hp

1/3 hp

1/3 hp

1/3 hp

Motor Pulley V.S.

3-1/4"

3-1/4"

3-1/4"

3-1/4"

Blower Pulley

7"

7"

7"

7"

Pulley Turns Open

5-1/2

4-1/2

3-1/2

2-1/2

Belt Size

1/2"x 43"

1/2"x 43"

1/2"x 43"

1/2"x 43"

@ 0.50" W.C.Static Pressure

Blower Type

Delhi G10

Blower Motor

1/3 hp

1/3 hp

1/3 hp

1/3 hp

Motor Pulley V.S.

3-1/4"

3-1/4"

3-1/4"

3-1/4"

Blower Pulley

6"

6"

6"

6"

Pulley Turns Open

3

2-1/2

2

1-1/2

Belt Size

1/2"x 40"

1/2"x 40"

1/2"x 40"

1/2"x 40"

Direct Drive Models

@ 0.20" W.C.Static Pressure

Blower Type

Delhi G10-8DD

Motor 4 Blower Speed

1/2 hp

1/2 hp

1/2 hp

1/2 hp

Speed Tap

LO

MED-LO

MED-LO

MED-HI

@ 0.50" W.C.Static Pressure

Blower Type

Delhi G10-8DD

Motor 4 Blower Speed

1/2 hp

1/2 hp

1/2 hp

1/2 hp

Speed Tap

LO

MED-LO

MED-LO

HI