Pentax N-0751M-OD installation manual Gas Line Sizing for a Noritz Gas Water Heater

Gas Line Sizing for a Noritz Gas Water Heater

Adapted from UPC 1997

Maximum Natural Gas Delivery Capacity in Cubic Feet per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop)

Pipe					Length in Feet
Size	3m (10')	6m (20')	9m (30')	12m (40')	15m (50')	18m (60')	21m (70')	24m (80')	27m (90')	30m (100')	37.5m (125')
1/2"	174	119	96	82	73	66	61	56	53	50	44
3/4"	363	249	200	171	152	138	127	118	111	104	93
1"	684	470	377	323	286	259	239	222	208	197	174
1 1/4"	1404	965	775	663	588	532	490	456	428	404	358
1 1/2"	2103	1445	1161	993	880	798	734	683	641	605	536
2"	4050	2784	2235	1913	1696	1536	1413	1315	1234	1165	1033
2 1/2"	6455	4437	3563	3049	2703	2449	2253	2096	1966	1857	1646
3"	11,412	7843	6299	5391	4778	4329	3983	3705	3476	3284	2910
3 1/2"	16,709	11,484	9222	7893	6995	6338	5831	5425	5090	4808	4261
4"	23,277	15,998	12,847	10,995	9745	8830	8123	7557	7091	6698	5936
	Contact the Gas Supplier for Btu/Cubic Ft. of the Supplied Gas. 1000 BTU/Cubic Ft. is a Typical Value

Maximum Liquified Petroleum (Undiluted) Delivery Capacity in Thousands of Btuh (0.5" WC Pressure Drop)

Pipe							Length in Feet
Size		3m (10')	6m (20')	9m (30')	12m (40')	15m (50')	18m (60')	21m (70')	24m (80')	27m (90')	30m (100')	37.5m (125')	45m (150')	60m (200')
1/2"		275	189	152	129	114	103	96	89	83	78	69	63	55
3/4"		567	393	315	267	237	217	196	185	173	162	146	132	112
	1"	1071	732	590	504	448	409	378	346	322	307	275	252	213
1	1/4"	2205	1496	1212	1039	913	834	771	724	677	630	567	511	440
1	1/2"	3307	2299	1858	1559	1417	1275	1181	1086	1023	976	866	787	675
	2"	6221	4331	3465	2992	2646	2394	2205	2047	1921	1811	1606	1496	1260

** For reference only. Please consult gas pipe manufacturer for actual pipe capacities.

Maximum Capacity of Flex TracPipeR in Cubic Feet per Hour of Natural Gas (0.60 Specific Gravity, 0.5" WC Pressure Drop)

Pipe							Length in Feet
Size		3m (10')	6m (20')	9m (30')	12m (40')	15m (50')	18m (60')	21m (70')	24m (80')	27m (90')	30m (100')	45m (150')	60m (200')
3/4"		206	147	121	105	94	86	80	75	71	67	55	48
	1"	383	269	218	188	168	153	141	132	125	118	94	82
1	1/4"	614	418	334	284	251	227	209	194	181	171	137	116
1	1/2"	1261	888	723	625	559	509	471	440	415	393	320	277
	2"	2934	2078	1698	1472	1317	1203	1114	1042	983	933	762	661

Maximum Capacity of Flex TracPipeR in Thousands of Btuh Liquified Petroleum ( 0.5" WC Pressure Drop)

Pipe							Length in Feet
Size		3m (10')	6m (20')	9m (30')	12m (40')	15m (50')	18m (60')	21m (70')	24m (80')	27m (90')	30m (100')	45m (150')	60m (200')
3/4"		325	232	191	166	149	136	126	118	112	106	87	76
	1"	605	425	344	297	265	241	222	208	197	186	143	129
1	1/4"	971	661	528	449	397	359	330	307	286	270	217	183
1	1/2"	1993	1404	1143	988	884	805	745	696	656	621	506	438
	2"	4638	3285	2684	2327	2082	1902	1761	1647	1554	1475	1205	1045

**For reference only. Please consult gas pipe manufacturer for actual pipe capacities. TracPipe® is a registered trademark of Omega Flex.

Maximum Capacity for Gas Flex Connectors in Cubic Feet per Hour of Natural Gas (0.60 Specific Gravity, 0.5" WC Pressure Drop)

Pipe			Length in Inches
Size	300mm (12")	600mm (24")	900mm (36")	1200mm (48")	1500mm (60")	1800mm (72")
1/2"	180	150	125	106	93	86
3/4"		290	255	215	197	173
1"		581	512	442	397	347
1 1/4"		1470	1200	1130	960	930

Maximum Capacity for Gas Flex Connectors in Thousands of Btuh Liquified Petroleum ( 0.5" WC Pressure Drop)

Pipe			Length in Inches
Size	300mm (12")	600mm (24")	900mm (36")	1200mm (48")	1500mm (60")	1800mm (72")
1/2"	288	240	200	169	149	137
3/4"		465	409	344	315	278
1"		930	825	708	638	556
1 1/4"		2352	1920	1808	1536	1488

** For reference only. Please consult gas pipe manufacturer for actual pipe capacities.

17