Specifications - Lennox F8AUH series Service Manual

Model No.
Input Btuh (kW)
Output Btuh (kW)

AFUE
California Seasonal Efficiency
Flue size connection dia. − in. (mm) round
Temperature rise range − _F (_C)
High static AGA/CGA cert. − in wg. (Pa)
Gas Piping Size IPS Nat. or LPG/propane
Blower wheel nominal Blower wheel nominal
diameter x width
Blower motor output − hp (W)
Nominal cooling Nominal cooling
that can be added
Shipping weight − lbs. (kg) 1 package
Electrical characteristics
OPTIONAL ACCESSORIES − Must Be Ordered Extra
Hanging Bracket Kit
High Altitude Pressure Switch Kits
LPG/propane kit
Sidewall Power Venting Kit
Twinning Kit
Up−Flow/Horizontal Filter and Filter Rack Kits
No. & size of filters − in. (mm)
*Variable Field.

Annual Fuel Utilization Efficiency based on US DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating
for non−weatherized furnaces.
For proper operation at altitudes over 4500 ft. (1370 m).
Required for horizontal venting applications.
Polyurethane frame type filter is furnished with kit.

SPECIFICATIONS

F8AUH**−24−045
F8AUH**−24−060
F8AUH**−24−045X
45,000 (13.2) 60,000 (17.6)
39,600 (10.8) 49,200 (14.4)
80.1%
75.4%
3 (76)
30 − 60 (17 − 33) 45 − 75 (25 − 42) 45 − 75 (25 − 42) 45 − 75 (25 − 42) 45 − 75 (25 − 42)
.50 (125)
1/2 (13)
in. 9 x 7
mm 229 x 178
1/4 (187)
Tons 1, 1.5 or 2
kW 3.5, 5.3 or 7.0 3.5, 5.3 or 7.0
130 (59)
120 volts − 60 hertz − 1 phase (less than 12 amps) All models
46J66
No Change
38K84
79J15
15L38
32J02 (single) 32J02 (single)
66K64 (ten)
(1) 16 x 20 x 1 (1) 16 x 20 x 1
(406 x 508 x 25) (406 x 508 x 25)
Page 2
F8AUH**−36−060
F8AUH**−36−060X
60,000 (17.6)
49,200 (14.4)
80.5% 80.5%
76.4% 75.9%
3 (76) 3 (76)
.50 (125) .50 (125)
1/2 (13) 1/2 (13)
9 x 7 10 x 7
229 x 178 254 x 178
1/4 (187) 1/3 (224)
1, 1.5 or 2 2, 2.5 or 3
7.0, 8.8 or 10.6
130 (59) 135 (61)
46J66 46J66
No Change No Change
38K84 38K84
79J15 79J15
15L38 15L38
32J02 (single)
66K64 (ten) 66K64 (ten)
(1) 16 x 20 x 1
(406 x 508 x 25)
F8AUH**−36−075
F8AUH**−24−075
F8AUH**−36−075X
75,000 (22.0) 75,000 (22.0)
61,700 (18.1) 61,700 (18.1)
80.1% 80.0%
76.8% 76.8%
4 (102) 4 (102)
.50 (125) .50 (125)
1/2 (13) 1/2 (13)
9 x 7 10 x 7
229 x 178 254 x 178
1/4 (187) 1/3 (224)
1, 1.5 or 2 2, 2.5 or 3
3.5, 5.3 or 7.0 7.0, 8.8 or 10.6
135 (61) 135 (61)
46J66 46J66
88J80 88J80
38K84 38K84
79J15 79J15
15L38 15L38
32J02 (single) 32J02 (single)
66K64 (ten) 66K64 (ten)
(1) 16 x 20 x 1 (1) 16 x 20 x 1
(406 x 508 x 25) (406 x 508 x 25)