Specifications; Blower Performance Data - Lennox G27M series Unit Information

Model No.
Input Btuh (kW) low fire
Output Btuh (kW) low fire
Input Btuh (kW) high fire
Output Btuh (kW) high fire
A.F.U.E.
-
Flue size connection diameter — in. (mm) round
Temperature rise range Temperature rise range —
E E
High static certified by A.G.A./C.G.A. — in wg. (Pa)
Gas Piping Size I.P.S. Natural gas only
Blower wheel nominal Blower wheel nominal
diameter x width
Blower motor output — hp (W)
Electrical characteristics
Nominal cooling Nominal cooling
that can be added
Up-flow/Horizontal Filter Kit (furnished)
filter size — in. (mm)
c
Shipping weight — lbs. (kg) 1 package
Catalog No.
Down-flow Do n flo
o o
No. & Size of Filters — in.
Filter Kit
(mm)
Down-flow Combustible Floor Base
Hanging Bracket Kit
High Altitude Pressure Switch Kits (high fire)
-
Annual Fuel Utilization Efficiency based on U.S. DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating f or non-weatherized
furnaces.
c
Polyurethane frame type filter.
o
Filters are not furnished with kit and must be ordered extra.
External Static External Static
Pressure
in. w.g.
0
.05
.10
.15
.20
.25
.30
.40
.50
.60
.70
NOTE — All air data is measured external to unit with 1 inch (25 mm) air filter in place. NOTE - - Filter not furnished with unit.
Low fire
F ( F ( C) C)
E E
High fire
in.
mm
Tons
kW
H
Optional Accessories (Must Be Ordered Extra)

BLOWER PERFORMANCE DATA

G27M2(X)-60 BLOWER PERFORMANCE
High
Pa cfm L/s
0 1270 600
12 1245 590
25 1220 575
37 1195 565
50 1170 550
62 1140 540
75 1110 525
100 1060 500
125 990 465
150 900 425
175 800 380

SPECIFICATIONS

G27M2(X)-60 G27M3(X)-75
40,800 (12.0) 51,000 (14.9)
32,600 (9.6) 40,800 (12.0)
60,000 (17.6) 75,000 (22.0)
48,000 (14.1) 60,000 (17.6)
3 (76)
30 - - 60 (17 - - 33) 40 - - 70 (22 - - 39)
9 x 7 10 x 7
229 x 178 254 x 178
1/4 (187) 1/3 (249)
120 volts — 60 hertz — 1 phase (12 amps or less - - all models)
2 or 2.5 2, 2.5 or 3
7.0 or 8.8 7.0, 8.8 or 10.6
(1) 16 x 20 x 1 (406 x 508 x 25)
135 (61)
LB-69843A
(2) 16 x 20 x 1 (406 x 508 x 25)
LB-79239A — 10 lbs. (4 kg)
(67J91)
LB-69957
80K40 80K43
Air Volume at Various Blower Speeds
Medium-High
cfm L/s
980 460
975 460
975 460
965 455
960 455
950 450
940 445
910 430
880 415
810 380
740 350
3DJH 
G27M4(X)-100
68,000 (19.9)
54,400 (16.0)
100,000 (29.3)
80,000 (23.5)
80%
4 (102)
30 -- 60 (17 - - 33)
40 -- 70 (22 - - 39)
.50 (124)
1/2 (13)
12 x 8
305 x 203
1/2 (373)
3.5 or 4
12.3 or 14.1
(1) 20 x 20 x 1(508 x 508 x 25)
H
— 3 lbs. (1 kg)
(32J01)
LB-79239B
(67J92)
— 15 lbs. (7 kg)
(46J66)
18L25
Medium-Low Low
cfm L/s cfm
770 365 570
770 365 565
770 365 565
765 360 560
760 360 560
760 360 555
760 360 550
750 355 545
740 350 540
690 325 530
630 295 520
G27M5(X)-120
81,600 (23.9)
65,300 (19.1)
120,000 (35.2)
96,000 (28.2)
12 x 9
305 x 229
3/4 (560)
3.5, 4 or 5
12.3, 14.1 or 17.6
175 (79)
— 10 lbs. (4 kg)
18L25
L/s
270
265
265
265
265
260
260
255
255
250
245