Nominal
Iron Pipe Size
-Inches(mm)
1/4
(6.35)
3/8
(9.53)
1/2
(12.7)
3/4
(19.05)
1
(25.4)
1-1/4
(31.75)
1-1/2
(36.1)
2
(50.8)
2-1/2
(63.5)
3
(76.2)
4
(101.6)
TABLE 5
GAS PIPE CAPACITY - FT31HR (kL/HR)
Internal Length of Pipe-Feet(m)
Diameter 10 20 30 40 50 60 70
-Inches(mm) (3,048) (6.096) (9.144) (12.192) (15.240) (18.288) (21.336)
364
(9.246)
.493
(12.522)
,622
(17.799)
824
(20.930)
1.049
(26.645)
1.380
(35.052)
1.610
(40.894)
2.967
(52.802)
2.469
(67.713)
3.068
(77.927)
4.026
(102.260)
43
(1J3)
95
(2.69)
175
(4,96)
360
(10,19)
68O
(19.25)
1490
(39.64)
2106
(89.46)
3950
(111.85)
6300
(178.39)
11000
(311.48)
23000
(651.27)
29 24 20 18 16 15
(.82) (.68) (.57) (.51) (,45) (.42)
65 52 45 40 36 33
(1.84) (1.47) (1.27) (1.13) (1.02) (.73)
120 97 82 73 66 61
(3.40) (2.75) (2,32) (2.07) (1.87) (1.73)
250 200 170 151 138 125
(7.08) (5.66) (4.61) (4.28) (3.91) (3.54)
465 375 326 285 260 240
(13.17) (10.62) (9.06) (8.07) (7.36) (6.80)
950 770 660 580 530 490
(25.90) (21.60) (16,69) (16.42) (15.01) (13,67)
460 1180 990 900 810 750
(41.34) (33.41) (26.03) (25.46) (22,94) (21.24)
2750 2200 1900 1680 1520 1400
(77.87) (62.30) (53.80) (47.57) (43.04) (39.64)
4350 3520 3000 2650 2400 2250
(123.17) (99.67) (84.95) (75.04) (67.96) (63.71)
7700 6250 5300 4750 4300 3900
(218.03) (176.98) (150.07) (134.50) (121.76) (110.43)
15800 12800 10900 9700 8800 8100
(44739) (362.44) (308.64) (274.67) (249,18) (229.36)
NOTE-Capacity given in cubic feet of gas per hour (kilo liters of gas per hour) and based on 0.60 specific gravity gas.
80 90 100
(24.384) (27.432) (30,480)
14 13 12
(.40) (.37) (34)
31 29 27
(.88) (.82) (.76)
57 53 50
(1.61) (1.50) (1.42)
118 110 103
(3.34) (3.11) (2.92)
220 205 195
(6.23) (5.80) (5.52)
460 430 400
(13.03) (12.18} (11.33)
690 650 620
(19.54) (16.41) (17.56)
1300 1220 1150
(36.81) (34.55) (32,56)
2050 1950 1850
(58.05) (58.22) (52.38)
3700 3450 3250
(104,77) (97.69) (92.03)
7560 7200 6700
(212.37) (203.88) (189.72)
The furnace must be isolated from the gas supply system
by closing its individual manual shut-off valve during any
pressure testing of the gas supply system at pressures less
than or equal to 1/2 psig (3.48 kPa, 14 inches w.c.).
tion purposes. Refer to figure 29 for control box arrange-
ment, figure 30 for a detail of the Surelight TM integrated
control, figure 31 for schematic wiring diagram and trou-
bleshooting, and figure 32 for point to point field wiring. :
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
ACAUTION
1
A field make-up box isprovided for line voltage wiring. Line
voltage wiring to unit is done through the J69 jack from the
field make-up box to plug P69 from the control box. See fig-
ures 25 and 26 for make-up box installation.
Figure 28 shows thermostat designations for identifica-
1 - Install field make-up box on either side, inside or out of
the cabinet. Knockouts are provided in box and cabi-
net to run wiring. See figures 25 and 26.
Page 16
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