LP Gas Only, Gas Pressure Testing, Fire | Kenmore 153.33115 instruction

Gas Pressure

the fuel is not spilled in the area of the water heater installation, or any source of ignition. If the fuel is spilled while purging the piping system of air follow the "WHAT TO DO IF YOU SMELL GAS" instructions on the cover of this manual.

LP Gas Only

Explosion Hazard

•Gas leaks can not always be detected by smell.

•Gas suppliers recommend that you use a gas detector approved by UL or CSA.

•For more information, contact your gas supplier.

•If a gas leak is detected, follow the "What to do if you smell gas" instructions on the cover of this manual.

Explosion Hazard

Have a qualified person make sure L.P. gas pressure does not exceed 13" water column.

IMPORTANT: The gas supply pressure must not exceed the maximum supply pressure as stated on the water heater'srating plate. The minimum supply pressure is for the purpose of input adjustment.

Examples of a qualified person include: licensed plumbers, authorized gas company personnel, and authorized service personnel.

Failure to do so can result in death, explosion, or

fire.

Gas Pressure Testing

IMPORTANT: This water heater and its gas connection must be leak tested before placing the appliance in operation.

•If the code requires the gas lines to be tested at a pressure exceeding 14" W.C., the water heater and its manual shut-off valve must be disconnected from the gas supply piping system and the line capped.

•If the gas lines are to be tested at a pressure tess than 14" W.C., the water heater must be isolated from the gas supply piping system by closing its manual shut-off valve.

NOTE: Air may be present in the gas lines and could prevent the pilot from lighting on initial start-up. The gas lines should be purged of air by a qualified technician after installation of the gas piping system. While purging the gas piping system of air, ensure that

Table 1

Natural Gas Pipe CapacityTable (Cu. Ft./Hr.)

Liquefied petroleum gas is over 50% heavier than air and in the occurrence of a leak in the system, the gas will settle at floor level. Basements, crawl spaces, closets and areas below ground level will serve as pockets for the accumulation of gas. Before lighting an L.R gas water heater, smell all around the appliance at floor level. If you smell gas, follow the instructions as given in the warning on the front page.

When your L.R tank runs out of fuel, turn off the gas at ait gas appliances including pilot lights. After the tank is refilled, all appliances must be re-lit according to their manufacturer's instructions.

Capacity of gas pipe of different diameters and lengths in cu. ft. per hr. with pressure drop of 0.3 in. and specific gravity of 0.60 (natural gas).

Nominal	mron Pipe					Length	of Pipe,	Feet
1/2	132	92	73	63	56	50	46	43	40	38	34	31	28	26
3/4	278	190	152	130	115	105	96	90	84	79	72	64	59	55
I	520	350	285	245	215	195	180	170	160	150	130	120	110	100
1-1/4	1050	730	590	500	440	400	370	350	320	305	275	250	225	210
1-112	1600	1100	890	760	670	610	560	530	490	460	410	380	350	320

After the length of pipe has been determined, select the pipe size which wiB provide the minimum cubic feet per hour required for the gas input rating of the water heater. By formula:

Cu. Ft. Per Hr. Required= Gas Input of Water Heater

Heating Value of Gas (BTU/FT 3)

The gas input of the water heater is marked on the water heater data plate. The heating value of the gas (BTU/FT _) may be determined by consulting the local natural gas utility.

Table 2

LP Gas CapacityTable

Maximum capacity of pipe in thousands of BTU per hour of undiluted liquefied petroleum gases (at 11 inches water column pressure). Based on a pressure drop of 0.5 inch water column.

Nomina[ Iron	Pipe				Length	of Pipe,	Feet
Size, in.	1(1	20	30	40	5£)	60	7Q	80	9_)	] O0	125	_50
1/2	275	189	152	129	114	103	96	89	83	78	69	63
3/4	576	393	315	267	237	217	196	185	173	162	146	132
1	1071	732	590	504	448	409	378	346	322	307	275	252
1=114	2205	1496	1212	1039	913	834	771	724	677	630	567	511

Example: Input BTU requirement of the water heater 100,000 BTUH.

Total pipe length, 80 feet = 3/4" IPS required.

Additional tables are available in the latest edition of the "National Fuel Gas Code", ANSI Z223,1,

153.33114, 153.33115 specifications

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