Bosch Appliances GWH 2400 ES NG, GWH 2400 ES LP manual For Natural GAS

Installation instructions

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 2400 ES (example: ¾” B.I. Natural Gas pipe for 10 ft (3.0m). will handle 278,000 btu’s (81.5 kWh). For multiple appliances combine the total maximum 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

3/8

1/2

3/4

1

11/4

11/2

2

0.364

0.493

0.622

0.824

1.049

1.380

1.610

2.067

32	22	18	15	14	12	11	11	10	9	8	8	7	6
72	49	40	34	30	27	25	23	22	21	18	17	15	14
132	92	73	63	56	50	46	43	40	38	34	31	28	26
278	190	152	130	115	105	96	90	84	79	72	64	59	55
520	350	285	245	215	195	180	170	160	150	130	120	110	100
1050	730	590	500	440	400	370	350	320	305	275	250	225	210
1600	1100	890	760	670	610	560	530	490	460	410	380	350	320
3050	2100	1650	1450	1270	1150	1050	990	930	870	780	710	650	610

Length of Flexible Corrugated Stainless Steel Tubing (CSST), Feet

Tube
size,
inches	EHD*
	10		20	30	40	50	60
1/2	18 EHD 82		58	47	41	37	34
3/4	23 EHD 161		116	96	83	75	68
1	30 EHD	330	231	188	162	144	131
1 1/4	37 EHD 639		456	374	325	292	267

*EHD = Equivalent Hydraulic Diameter. The greater the value of EHD, the greater the gas capacity of the tubing.

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).

* EHD = Equivalent Hydraulic Diameter. The greater the value of EHD, the greater the gas capacity of the tubing.

Nominal
iron							Black Iron Pipe
pipe							Length of Pipe, Feet
Inches		10		20	30	40	50	60	80	100	125	150	200
	1/2		291	200	160	137	122	110	94	84	74	67	58
	3/4	608		418	336	287	255	231	197	175	155	140	120
	1	1145		787	632	541	480	434	372	330	292	265	227

Length of Flexible Corrugated Stainless Steel Tubing (CSST), Feet

Tube
size
inches	EHD*
		10	20	30	40	50	60
1/2	18 EHD	129	91	74	64	58	53
3/4	23 EHD	254	183	151	131	118	107
1	30 EHD	521	365	297	256	227	207

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

							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

Fig. 27

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