Lennox SL280V Installation Instructions Manual page 20

Nominal
Internal
Iron Pipe
Diameter
Size
inches
inches
(mm)
(3.048)
(mm)
1/2 .622 175
(12.7) (17.799) (4.96)
3/4 .824 360
(19.05) (20.930) (10.19)
1 1.049 680
(25.4) (26.645) (919.25)
1−1/4 1.380 1400
(31.75) (35.052) (39.64)
1−1/2 1.610 2100
(38.1) (40.894) (59.46)
2 2.067 3950
(50.8) (52.502) (111.85)
2−1/2 2.469 6300
(63.5) (67.713) (178.39)
3 3.068 11000
(76.2) (77.927) (311.48)
NOTE − Capacity given in cubic feet (m
MANUAL
MAIN SHUT−OFF
VALVE
GROUND
JOINT
UNION
DRIP LEG
Gas Pipe Capacity − ft
10 20 30
(6.096) (9.144)
120 97
(3.40) (2.75)
250 200
(7.08) (5.66)
465 375
(13.17) (10.62)
950 770
(26.90) (21.80)
460 1180
(41.34) (33.41)
2750 2200
(77.87) (62.30)
4350 3520
(123.17) (99.67)
7700 6250
(218.03) (176.98)
3
) of gas per hour and based on 0.60 specific gravity gas.
Left Side Piping
(Standard)
AUTOMATIC
GAS VALVE
(with manual
shut−off valve)
NOTE − BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET
TABLE 11
3 3
/hr (m /hr)
Length of Pipe − feet (m)
40 50 60
(12.192) (15.240) (18.288)
82 73 66
(2.32) (2.07) (1.87)
170 151 138
(4.81) (4.28) (3.91)
320 285 260
(9.06) (8.07) (7.36)
660 580 530
(18.69) (16.42) (15.01)
990 900 810
(28.03) (25.48) (22.94)
1900 1680 1520
(53.80) (47.57) (43.04)
3000 2650 2400
(84.95 (75.04) (67.96)
5300 4750 4300
(150.07) (134.50) (121.76)
AUTOMATIC
GAS VALVE
(with manual
shut−off valve)
FIELD
PROVIDED
AND INSTALLED
FIGURE 17
Page 20
70 80 90
(21.336) (24.384) (27.432)
61 57 53
(1.73) (1.61) (1.50)
125 118 110
(3.54) (3.34) (3.11)
240 220 205
(6.80) (6.23) (5.80)
490 460 430
(13.87) (13.03) (12.18)
750 690 650
(21.24) (19.54) (18.41)
1400 1300 1220
(39.64) (36.81) (34.55)
2250 2050 1950
(63.71) (58.05) (55.22)
3900 3700 3450
(110.43) (104.77) (97.69)
MANUAL
MAIN SHUT−OFF
VALVE
GROUND
JOINT
UNION
DRIP LEG
Right Side Piping
(Alternate)
100
(30.480)
50
(1.42)
103
(2.92)
195
(5.52)
400
(11.33)
620
(17.56)
1150
(32.56)
1850
(52.38)
3250
(92.03)