Lennox O23 User Manual

Page 3
SPECIFICATIONS − OF23
Model Number
OF23Q3105/120
OF23Q3105/120R
OF23Q5140/154
OF23Q5140/154R
InputBtuh (kW) low/high 105,000 / 120,000(30.8 / 35.2) 140,000 / 154,000(41.0 / 45.1)
OutputBtuh (kW) low/high 85,000 / 97,000 (24.9 / 28.4) 113,000 / 125,000 (33.1 / 36.6)
*A.F.U.E. (low/high)
82.4% / 81.5%
82.5% / 82.4% R Models
81.8% / 81.5%
82.0% / 81.8% R Models
Nozzle Ratinggph (L/hr) and spray angle
.65 (2.5)  80° (105 input)
.75 (2.8)  80° (120 input)
.85 (3.2)  80° (140 input)
1.00 (3.8)  80° (154 input)
Flue Size Diameterin. (mm) 6 (152) 6 (152)
Oil Burner Pump 1 Stage 1 Stage
Oil Burner Pump Pressure  psig (Pa) 140 (965) 140 (965)
Optional 2 Stage Fuel Pump 65A44
Blower wheel nominal
in. 10 x 8 12 x 9
Blower
wheel
nominal
diameter x width
mm 254 x 203 305 x 229
Blower Motor Outputhp (W) 1/3 (249) 3/4 (560)
Nominal cooling that can be addedTons (kW) 2 thru 3 (7.0 thru 10.6) 3 thru 5 (10.6 thru 17.6)
Number and size of filters
in. (1) 18 x 19 x 1 (1) 19 x 21 x 1
Number and size of filters
mm (1) 457 x 483 x 25 (1) 483 x 533 x 25
Shipping weightlbs. (kg) 1 package 255 (116) 290 (132)
Electrical Characteristics 115  60 hertz  1 phase
 Optional Accessories (Must Be Ordered Extra) 
Two Stage Oil Pump 65A44
Oil Filter 91P89
*Annual Fuel Utilization Efficiency based on U.S. DOE test procedures and FTC labeling regulations. Isolated combustion system rating for nonweatherized furnaces.
Nozzle must be field provided for field conversion to higher heating input.
BLOWER PERFORMANCE DATA − O23
O23Q270 BLOWER PERFORMANCE
External Static
Air Volume at Various Blower Speeds
External
Static
Pressure
High Medium Low
in.w.g. Pa cfm L/s cfm L/s cfm L/s
.20 50 1260 595 870 410 520 245
.30 75 1205 570 825 390 500 235
.40 100 1135 535 780 370 480 225
.50 125 1050 495 720 340 450 210
.60 150 960 455 660 310 410 195
NOTE  All air data is measured external to the unit with the air filter in place.
O23Q3105/120 BLOWER PERFORMANCE
External Static
Air Volume at Various Blower Speeds
External
Static
Pressure
High Medium Low
in. w.g. Pa cfm L/s cfm L/s cfm L/s
.20. 50 1350 635 1215 575 1080 510
.30 75 1280 605 1180 555 1060 500
.40 100 1210 570 1140 540 1040 490
.50 125 1180 444 1085 510 1000 470
.60 150 1100 520 1025 485 950 450
NOTE  All air data is measured external to the unit with the air filter in place.
O23Q5140/154 BLOWER PERFORMANCE
External Static
Air Volume at Various Blower Speeds
External
Static
Pressure
High Medium Low
in. w.g. Pa cfm L/s cfm L/s cfm L/s
.20 50 1950 920 1620 765 1250 590
.30 75 1900 895 1590 750 1230 580
.40 100 1880 885 1560 735 1210 570
.50 125 1850 875 1540 725 1190 560
.60 150 1800 850 1490 705 1155 545
NOTE  All air data is measured external to the unit with the air filter in place.

Lennox O23 Specifications

General

Brand	Lennox
Model	O23
Category	Furnace
Language	English