Bosch Appliances GWH-635-ES manual For Natural GAS, For LP GAS

Appliance details

FOR NATURAL GAS

Maximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and a Pressure drop of 0.3 in Water Column (0.75mbar).(Based on a 0.60 Specific Gravity Gas) Btu numbers given in thousands.

								Follow boxed numbers for piping just one GWH-
								635-ES (example: ¾” B.I. Natural Gas pipe for 20 ft
								(6.1m). will handle 190,000 btu’s (55.7 kWh). For
								multiple appliances combine the total btu input load
								and then refer to applicable chart below.
Nominal
Iron						Length of Black Iron Pipe, Feet
Pipe	Internal
Size,	Diameter
inches	inches	10	20	30	40	50	60	70	80	90	100	125	150	175	200
1/4	0.364	32	22	18	15	14	12	11	11	10	9	8	8	7	6
3/8	0.493	72	49	40	34	30	27	25	23	22	21	18	17	15	14
1/2	0.622	132	92	73	63	56	50	46	43	40	38	34	31	28	26
3/4	0.824	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	1.610	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	17,500	12,000	9,700	8,300	7,400	6,80	6,200	5,800	5,400	5,100	4,500	4,100	3,800	3500

FOR LP GAS

Maximum Capacity of Pipe in Thousands of BTU per Hour of Undiluted Petroleum Gases (at 11 inches Water Column Inlet Pressure) (Based on a Pressure Drop of 0.5 Inch Water Column).

Maximum Capacity of Semi-Rigid (flexible, non

corrugated) Tubing in Thousands of BTU per Hour

of Undiluted Liquefied Petroleum Gases (at 11

inches Water Column Inlet Pressure).

(Based on a Pressure Drop of 0.5 Inch Water Column)

*Source National Fuel Gas Code NFPA 54, ANSI Z223.1 - No Additional Allowance is necessary for an ordinary number of fittings

	Nominal
	Iron Pipe											Black Iron Pipe
	Size,											Length of Pipe, Feet
	Inches			10			20		30		40			50	60	70		80		90			100		125	150
		1/2		275		189			152	129			114		103	96		89		83			78		69	63
		3/4		567		693			315	267			237		217	196		185			173		162		146	132
		1		107		732			590	504			448		409	378		346			322		307		275	252
	1 1/4			220		149			121	103			913		834	771		724		677			630		567	511
	1 1/2			330		229			185	155			141		127	118		108		102			976		866	787
	2			622		433			346	299			264		239	220		204		192			1811		1606	1496
														Copper
Outside												Length of Tubing, Feet
Diameter,
Inch				10			20		30		40			50		60		70		80			90	100
3/8				39			26		21		19				_	_		_		_			_	_
1/2				92			62		50		41			37		35		31		29			27	26
			5/8		199			131	107		90			79		72		67		62			59	55
			3/4	329				216	181			145		131		121	112		104				95	90
			7/8	501			346		277			233		198		187	164		155			146		138

Fig. 22

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