Weber 42377 manual Typical Natural GAS Supply Installation, General Specifications for Piping

6 GAS INSTRUCTIONS

TYPICAL NATURAL GAS SUPPLY INSTALLATION

We recommend that this installation be done by a LICENSED professional.

GENERAL SPECIFICATIONS FOR PIPING

Note - Contact your local municipality for building codes regulating outdoor gas grill installations. In absence of Local Codes, you must conform to the latest edition of National Fuel Gas Code ANSI Z223.1/NFPA54.

•This grill is designed to operate at 4.5 inches of water column pressure.

•A manual shut-off valve must be installed outdoors, and be accessible, not in the “built-in” structure. An additional manual shut-off valve indoors should be installed in the branch fuel line in an accessible location near the supply line.

CAUTION: If young children are in the area, a locking valve should be considered.

•Pipe compound should be used which is resistant to the action of liquid propane gas when gas connections are made.

•The gas connections must be fi rmly attached to a rigid, permanent construction.

Note: The information provided in this manual is general for typical installations. We cannot cover all possible installation ideas. We recommend, prior to installation, that you contact your municipality for local building codes and your local fire department for installation verification.

If you have any questions, contact Customer Service at 1-800-446-1071.

GAS LINE PIPING

•Refer to the piping chart at the bottom of previous page.

•The corrugated gas line from the manifold is 58 inches long. Do not extend the gas line.

•We have provided the means to make an SAE 45° fl are connection. Do not use pipe sealant on this connection.

•If the length of line required does not exceed 50 feet, use a 5/8” O.D. tube. One size larger should be used for lengths greater than 50 feet. Refer to piping chart.

•Gas piping may be copper tubing, type K or L; polyethylene plastic tube, with a minimum wall thickness of .062 inch; or standard weight (schedule 40) steel or wrought iron pipe.

•Copper tubing must be tin-lined if the gas contains more than 0.3 grams of hydrogen sulfi de per 100 cubic feet of gas.

•Plastic tubing is suitable only for outdoor, underground use.

•Gas piping in contact with earth, or any other material which may corrode the piping, must be protected against corrosion in an approved manner.

•Underground piping must have a minimum of 18” cover.

Table	Maximum Capacity of Pipe in Cubic Feet of Gas per Hour for Gas Pressures of 0.5 psi or Less and a Pressure Drop of 0.3 Inch
10-1					Water Column. (Based on a 0.60 Specific Gravity Gas)
Nominal	Internal							Length of Pipe (Feet)
Iron Pipe	Diameter
Size	(Inches)	10	20	30	40	50	60	70	80	90	100	125	150	175	200
(Inches)
1/4	.364	32	22	18	15	14	12	11	11	10	9	8	8	7	6
3/8	.493	72	49	40	34	30	27	25	23	22	21	18	17	15	14
1/2	.622	132	92	73	63	56	50	46	43	40	38	34	31	28	26
3/4	.824	278	190	152	130	115	105	96	90	84	79	72	64	59	55
1	1.049	520	350	285	245	215	195	180	170	160	150	130	120	110	100
1 1/4	1.380	1050	730	590	500	440	400	370	350	320	305	275	250	225	210
1 1/2	1.160	1600	1100	890	760	670	610	560	530	490	460	410	380	350	320
2	2.067	3050	2100	1650	1450	1270	1150	1050	990	930	870	780	710	650	610
2 1/2	2.469	4800	3300	2700	2300	2000	1850	1700	1600	1500	1400	1250	1130	1050	980
3	3.068	8500	5900	4700	4100	3600	3250	3000	2800	2600	2500	2200	2000	1850	1700
4	4.026	17500	12000	9700	8300	7400	6800	6200	5800	5400	5100	4500	4100	3800	3500
	©1997 National Fire Protection Association, Inc., and International Approval Services - U.S., Inc. All Rights Reserved.