Lennox International Inc EL296UHE Electrical, GAS Pipe Capacity FT3/HR kL/HR

TABLE 10

GAS PIPE CAPACITY - FT3/HR (kL/HR)

Nominal	Internal					Length of Pipe - feet (m)
Iron Pipe
	Diameter
Size
	inches	10	20	30	40		50	60	70	80	90	100
inches
	(mm)	(3.048)	(6.096)	(9.144)	(12.192)		(15.240)	(18.288)	(21.336)	(24.384)	(27.432)	(30.480)
(mm)
1/2	.622	172	118	95	81		72	65	60	56	52	50
(12.7)	(17.799)	(4.87)	(3.34)	(2.69)	(2.29)		(2.03)	(1.84)	(1.69)	(1.58)	(1.47)	(1.42)
3/4	.824	360	247	199	170		151	137	126	117	110	104
(19.05)	(20.930)	(10.19)	(7.00)	(5.63)	(4.81)		(4.28)	(3.87)	(3.56)	(3.31)	(3.11)	(2.94)
1	1.049	678	466	374	320		284	257	237	220	207	195
(25.4)	(26.645)	(19.19)	(13.19)	(10.59)	(9.06)		(8.04)	(7.27)	(6.71)	(6.23)	(5.86)	(5.52)
1-1/4	1.380	1350	957	768	657		583	528	486	452	424	400
(31.75)	(35.052)	(38.22)	(27.09)	(22.25)	(18.60)		(16.50)	(14.95)	(13.76)	(12.79)	(12.00)	(11.33)
1-1/2	1.610	2090	1430	1150	985		873	791	728	677	635	600
(38.1)	(40.894)	(59.18)	(40.49)	(32.56)	(27.89)		(24.72)	(22.39)	(20.61)	(19.17)	(17.98)	(17.00)
2	2.067	4020	2760	2220	1900		1680	1520	1400	1300	1220	1160
(50.8)	(52.502)	(113.83)	(78.15)	(62.86)	(53.80)		(47.57)	(43.04)	(39.64)	(36.81)	(34.55)	(32.844)
2-1/2	2.469	6400	4400	3530	3020		2680	2480	2230	2080	1950	1840
(63.5)	(67.713)	(181.22)	(124.59)	(99.95)	(85.51)		(75.88)	(70.22)	(63.14)	(58.89)	(55.22)	(52.10)
3	3.068	11300	7780	6250	5350		4740	4290	3950	3670	3450	3260
(76.2)	(77.927)	(319.98)	(220.30)	(176.98)	(151.49)		(134.22)	(121.47)	(111.85)	(103.92)	(97.69)	(92.31)

NOTE - Capacity given in cubic feet of gas per hour (kilo liters of gas per hour) and based on 0.60 specific gravity gas.

Electrical

ELECTROSTATIC DISCHARGE (ESD)

Precautions and Procedures

CAUTION

Electrostatic discharge can affect elec­ tronic components. Take precautions to neutralize electrostatic charge by touching your hand and tools to metal prior to handling the control.

INTERIOR MAKE-UP BOX INSTALLATION

remove and relocate

plug to unused

opening on left side

MAKE-UP

BOX

Right Side

FIGURE 63

The unit is equipped with a field make-up box. The make- up box may be moved to the right side of the furnace to fa­ cilitate installation. Secure the excess wire to the existing harness to protect it from damage.

Refer to figure 64 for field wiring, schematic wiring diagram and troubleshooting.

The power supply wiring must meet Class I restrictions. Protected by either a fuse or circuit breaker, select circuit protection and wire size according to unit nameplate.

NOTE - Unit nameplate states maximum current draw. Maximum Over-Current Protection allowed is 15 AMP. Holes are on both sides of the furnace cabinet to facilitate wiring.

Install a separate (properly sized) disconnect switch near the furnace so that power can be turned off for servicing. Before connecting the thermostat check to make sure the wires will be long enough for servicing at a later date. Make sure that thermostat wire is long enough to facilitate future removal of blower for service.

Complete the wiring connections to the equipment. Use the provided unit wiring diagram and the field wiring diagram shown in figure 64. Use 18-gauge wire or larger that is suit­ able for Class II rating for thermostat connections.

Electrically ground the unit according to local codes or, in the absence of local codes, according to the current Na­ tional Electric Code (ANSI/NFPA No. 70) for the USA and current Canadian Electric Code part 1 (CSA standard C22.1) for Canada. A green ground wire is provided in the field make-up box.

NOTE - The EL296UHE furnace contains electronic components that are polarity sensitive. Make sure that the furnace is wired correctly and is properly grounded.

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